Symbols, Contents
PROFIBUS Networks 1
Topologies of SIMATIC NET PROFIBUS
Networks 2
Configuring Networks 3
Passive Components of RS–485 Networks 4
Active Components of RS–485 Networks 5
Passive Components for PROFIBUS–PA 6
Passive Components for Electrical Networks 7
Active Components for Optical Networks 8
Active Components for Wireless Networks 9
Testing PROFIBUS A
Lightning and Surge Voltage Protection for
LAN Cables Between Buildings B
Installing LAN Cables C
Installing Instructions for SIAMTIC NET
PROFIBUS Plastic Fiber Optic with Simplex
Connenctors or BFOC Connectors and Pul-
ling Loop for the FO Standard Cable D
Installing Network Components in Cubicles E
Dimension Drawings F
Operating Instructions ILM / OLM / OBT G
General Information H
References I
SIMATIC NET – Support and Training J
Glossary, Index
Manual
05/2000
6GK1970–5CA20–0AA1
Release 2
SIMATIC NET
PROFIBUS Networks
!Danger
indicates that death, severe personal injury or substantial property damage will result if proper precau-
tions are not taken.
!Warning
indicates that death, severe personal injury or substantial property damage can result if proper precau-
tions are not taken.
!Caution
indicates that minor personal injury or property damage can result if proper precautions are not taken.
Note
draws your attention to particularly important information on the product, handling the product, or to a
particular part of the documentation.
Qualified Personnel
Only qualified personnel should be allowed to install and work on this equipment Qualified persons are
defined as persons who are authorized to commission, to ground, and to tag circuits, equipment, and sy-
stems in accordance with established safety practices and standards.
Correct Usage
Note the following:
!Warning
This device and its components may only be used for the applications described in the catalog or the
technical description, and only in connection with devices or components from other manufacturers which
have been approved or recommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up, and installed cor-
rectly, and operated and maintained as recommended.
Trademarks SIMATICR, SIMATIC HMIR and SIMATIC NETR are registered trademarks of SIEMENS AG.
HCS is a registered trademark of Ensign–Bickford Optics Company.
Third parties using for their own purposes any other names in this document which refer to trademarks
might infringe upon the rights of the trademark owners.
Safety Guidelines
We have checked the contents of this manual for agreement with the hard-
ware and software described. Since deviations cannot be precluded entirely,
we cannot guarantee full agreement. However, the data in this manual are
reviewed regularly and any necessary corrections included in subsequent
editions. Suggestions for improvement are welcomed.
Disclaimer of LiabilityCopyright Siemens AG 1999 All rights reserved
The reproduction, transmission or use of this document or its contents is not
permitted without express written authority. Offenders will be liable for
damages. All rights, including rights created by patent grant or registration of
a utility model or design, are reserved.
Siemens AG
Bereich Automatisierungs– und Antriebstechnik
Geschäftsgebiet Industrielle Kommunikation
Postfach 4848, D-90327 Nürnberg E Siemens AG 1999
Subject to technical change.
Siemens Aktiengesellschaft Order no. 6GK 1970–5AC20–0AA1
i
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Symbols
PROFIBUS 830–1 T connecting cable
PROFIBUS 830-2 connecting cable
LAN cable (twisted-pair)
Duplex FO cable
Wireless transmission (infrared)
Bus connector
S7–300
S7–400
ET200S
OP25
ET 200M (with IM 153–2 FO)
PG/PC/OP
AS-i branch
Symbols
ii PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Optical link module (OLM)
Optical bus terminal (OBT)
Infrared link module (ILM)
Repeater
Contents
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PROFIBUS Networks SIMATIC NET
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Contents
1 PROFIBUS NETWORKS 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1 Local Area Networks in Manufacturing and Process Automation 1-2. . . . . . .
1.1.1 General Introduction 1-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.1.2 Overview of the SIMATIC NET System 1-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2 Basics of the PROFIBUS Network 1-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.1 Standards 1-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.2 Access Techniques 1-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.3 Transmission Techniques 1-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1.2.4 Transmission Techniques According to EIA Standard RS-485 1-10. . . . . . . . .
1.2.5 Transmission Techniques for Optical Components 1-12. . . . . . . . . . . . . . . . . . .
1.2.6 Transmission Technique for Wireless Infrared Technology 1-14. . . . . . . . . . . . .
1.2.7 Transmission Technique for PROFIBUS-PA 1-15. . . . . . . . . . . . . . . . . . . . . . . . .
2 Topologies of SIMATIC NET PROFIBUS Networks 2-1. . . . . . . . . . . . . . . . . . . . . . . . .
2.1 Topologies of RS-485 Networks 2-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.1.1 Components for Transmission Rates up to 1.5 Mbps 2-3. . . . . . . . . . . . . . . .
2.1.2 Components for Transmission Rates up to
12 Mbps 2-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2 Topologies of Optical Networks 2-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.1 Topology with Integrated Optical Interfaces 2-6. . . . . . . . . . . . . . . . . . . . . . . . .
2.2.2 Topologies with OLMs 2-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.2.3 Combination of Integrated Optical Interfaces and OLMs 2-13. . . . . . . . . . . . . .
2.3 Topologies of Wireless Networks 2-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.4 Topologies with PROFIBUS-PA 2-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5 Connectivity Devices 2-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.1 DP/DP Coupler 2-20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.2 Connecting to PROFIBUS-PA 2-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.3 DP/PA Coupler 2-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.4 DP/PA Link 2-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.5 Connecting PROFIBUS-DP to RS-232C 2-28. . . . . . . . . . . . . . . . . . . . . . . . . . . .
2.5.6 Connecting with the DP/AS-Interface Link 65 2-30. . . . . . . . . . . . . . . . . . . . . . .
2.5.7 Connecting with the DP/AS-Interface Link 20 2-33. . . . . . . . . . . . . . . . . . . . . . . .
2.5.8 Connecting PROFIBUS-DP to instabus EIB 2-36. . . . . . . . . . . . . . . . . . . . . . . . .
3 Configuring Networks 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Configuring Electrical Networks 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.1 Segments for Transmission Rates up to a Maximum of 500 Kbps 3-3. . . . . .
3.1.2 Segments for a Transmission Rate of 1.5 Mbps 3-4. . . . . . . . . . . . . . . . . . . . .
3.1.3 Segments for Transmission Rates up to a Maximum of
12 Mbps 3-8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1.4 Configuring Electrical Networks with RS-485 Repeaters 3-9. . . . . . . . . . . . . .
3.2 Configuring Optical Networks 3-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2.1 How a Fiber-Optic Cable Transmission System Works 3-12. . . . . . . . . . . . . . .
3.2.2 Optical Power Budget of a Fiber-Optic Transmission System 3-14. . . . . . . . . .
3.2.3 Cable Lengths for Plastic and PCF FO Paths 3-17. . . . . . . . . . . . . . . . . . . . . . .
3.2.4 Calculating the Power Budget of Glass Fiber Optical Links with OLMs 3-18. .
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3.3 Transmission Delay Time 3-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.1 Configuring Optical Buses and
Star Topologies with OLMs 3-23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.3.2 Configuring Redundant Optical Rings with OLMs 3-27. . . . . . . . . . . . . . . . . . . .
3.3.3 Example of Configuring the Bus Parameters in STEP 7 3-31. . . . . . . . . . . . . . .
4 Passive Components for RS-485 Networks 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 SIMATIC NET PROFIBUS Cables 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.1 FC Standard Cable 4-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.2 FC-FRNC Cable (LAN cable with halogen-free outer sheath) 4-8. . . . . . . . . .
4.1.3 FC Food Cable 4-9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.4 FC Robust Cable 4-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.5 PROFIBUS Flexible Cable 4-11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.6 FC Underground Cable 4-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.7 FC Trailing Cable 4-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.8 PROFIBUS Festoon Cable 4-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.9 SIENOPYR-FR Marine Cable 4-22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 FastConnect Bus Connector 4-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.1 The FastConnect System 4-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.2 Area of Application and Technical Specifications of the FastConnect Bus
Connector 4-25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2.3 Using the FastConnect Stripping Tool for Preparing FC Cables 4-30. . . . . . . .
4.3 Bus Connectors 4-32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3.1 Area of Application and Technical Specifications of the Bus Connector 4-33. .
4.4 Attaching the LAN Cable to the Bus Connector 4-37. . . . . . . . . . . . . . . . . . . . . .
4.4.1 Attaching the LAN Cable to Bus Connector (6ES7 972-0B.11..) 4-37. . . . . . . .
4.4.2 Connecting the LAN Cable to Bus Connector (6ES7 972-0BA30-0XA0) 4-40.
4.4.3 Connecting the LAN Cable to Bus Connector (6ES7 972-0B.40) 4-42. . . . . . .
4.5 Installing the Bus Connector with Axial Cable Outlet 4-44. . . . . . . . . . . . . . . . . .
4.6 Plugging the Bus Connector into the Module 4-46. . . . . . . . . . . . . . . . . . . . . . . .
4.7 Bus Terminals for RS-485 Networks 4-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7.1 Versions 4-48. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7.2 Design and Functions of the RS-485 Bus Terminal 4-49. . . . . . . . . . . . . . . . . . .
4.7.3 Design and Functions of the 12M Bus Terminal 4-52. . . . . . . . . . . . . . . . . . . . . .
4.7.4 Mounting/Attaching the LAN Cables 4-55. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7.5 Grounding 4-58. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.7.6 Technical Data of the RS-485 Bus Terminal 4-60. . . . . . . . . . . . . . . . . . . . . . . . .
4.7.7 Technical Data of the 12M Bus Terminal 4-61. . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8 Cable Connections 4-63. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.8.1 Cable Connections to Network Components 4-63. . . . . . . . . . . . . . . . . . . . . . . .
4.8.2 Cable Connection without Bus Connection Elements 4-63. . . . . . . . . . . . . . . . .
4.9 Preassembled Connecting Cables 4-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.9.1 830-1T Connecting Cable 4-65. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.9.2 830-2 Connecting Cable 4-67. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Active Components for RS-485 Networks 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 RS-485 Repeater 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Possible Configurations with the RS-485 Repeater 5-6. . . . . . . . . . . . . . . . . . .
Contents
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5.3 Installing and Uninstalling the RS-485 Repeater 5-9. . . . . . . . . . . . . . . . . . . . .
5.4 Ungrounded Operation of the RS-485 Repeater 5-12. . . . . . . . . . . . . . . . . . . . .
5.5 Connecting the Power Supply 5-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.6 Connecting the LAN Cable 5-14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.7 PROFIBUS Terminator 5-15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Passive Components for PROFIBUS-PA 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.1 FC Process Cable 6-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6.2 SpliTConnect Tap 6-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Passive Components for Electrical Networks 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.1 Fiber-Optic Cables 7-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2 Plastic Fiber-Optic Cables 7-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.1 Plastic Fiber Optic, Duplex Cord 7-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.2 Plastic Fiber-Optic, Standard Cables 7-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.2.3 PCF Fiber-Optic Cables 7-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3 Glass Fiber-Optic Cables 7-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.1 Fiber-Optic Standard Cable 7-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.2 INDOOR Fiber-Optic Cable 7-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.3 Flexible Fiber-Optic Trailing Cable 7-19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.3.4 SIENOPYR Duplex Fiber-Optic Marine Cable 7-22. . . . . . . . . . . . . . . . . . . . . . .
7.3.5 Special Cables 7-24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4 Fiber-Optic Connectors 7-26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.1 Connectors for Plastic Fiber-Optic Cables 7-26. . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.2 Simplex Connector and Adapter for Devices with Integrated Optical Interfaces .
7-26
7.4.3 BFOC Connectors for OLMs 7-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7.4.4 Connectors for Glass Fiber Cables 7-30. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Active Components for Optical Networks 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.1 Optical Bus Terminal OBT 8-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8.2 Optical Link Module OLM 8-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 Active Components for Wireless Networks 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9.1 Infrared Link Module ILM 9-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A Testing PROFIBUS A-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1 Hardware Test Device BT200 for PROFIBUS-DP A-2. . . . . . . . . . . . . . . . . . . .
A.1.1 Possible Uses A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.2 Area of Application A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.3 Logging Functions A-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.4 Design A-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.5 Functions A-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.1.6 How the Unit Functions A-5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.2 Testing FO Transmission Paths A-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.2.1 Necessity of a Final Test A-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.2.2 Optical Power Source and Meter A-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
A.2.3 Optical Time Domain Reflectometer (OTDR) A-9. . . . . . . . . . . . . . . . . . . . . . . .
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A.2.4 Checking the Optical Signal Quality with PROFIBUS OLM V3 A-12. . . . . . . . .
B Lightning and Surge Voltage Protection for LAN Cables Between Buildings B-1
B.1 Why Protect Your Automation System From Overvoltage? B-2. . . . . . . . . . . .
B.2 Protecting LAN Cables from Lightning B-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2.1 Instructions for Installing Coarse Protection B-5. . . . . . . . . . . . . . . . . . . . . . . . .
B.2.2 Instructions for Installing Fine Protection B-6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
B.2.3 General Information on the Lightning Protection Equipment from the Firm of
Dehn & Söhne B-7. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C Installing LAN Cables C-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.1 LAN Cables in Automation Systems C-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.2 Electrical Safety C-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.3 Mechanical Protection of LAN Cables C-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.4 Electromagnetic Compatibility of LAN Cables C-7. . . . . . . . . . . . . . . . . . . . . . .
C.4.1 Measures to Counter Interference Voltages C-7. . . . . . . . . . . . . . . . . . . . . . . . .
C.4.2 Installation and Grounding of Inactive Metal Parts C-8. . . . . . . . . . . . . . . . . . .
C.4.3 Using the Shields of Electrical LAN Cables C-8. . . . . . . . . . . . . . . . . . . . . . . . . .
C.4.4 Equipotential Bonding C-10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.5 Routing Electrical LAN Cables C-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.5.1 Cable Categories and Clearances C-13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.5.2 Cabling within Closets C-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.5.3 Cabling within Buildings C-16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.5.4 Cabling outside Buildings C-17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.5.5 Special Noise Suppression Measures C-18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.6 Electromagnetic Compatibility of Fiber-Optic Cables C-20. . . . . . . . . . . . . . . . .
C.7 Installing LAN Cables C-21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C.7.1 Instructions for Installing Electrical and Optical LAN cables C-21. . . . . . . . . . . .
C.8 Additional Instructions on Installing Fiber-Optic Cables C-24. . . . . . . . . . . . . . .
D Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber-Optic with
Simplex Connectors or BFOC Connectors and Pulling Loop for the FO Standard
Cable D-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E Installing Network Components in Cubicles E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E.1 IP Degrees of Protection E-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
E.2 SIMATIC NET Components E-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F Dimension Drawings F-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
F.1 Dimension Drawings of the Bus Connectors F-2. . . . . . . . . . . . . . . . . . . . . . . . .
F.2 Dimension Drawings of the RS-485 Repeater F-5. . . . . . . . . . . . . . . . . . . . . . .
F.3 Dimension Drawing of the PROFIBUS Terminator F-6. . . . . . . . . . . . . . . . . . .
F.4 Dimension Drawings of the RS-485 Bus Terminal F-7. . . . . . . . . . . . . . . . . . . .
F.5 Dimension Drawings of the BT12M Bus Terminal F-8. . . . . . . . . . . . . . . . . . . .
F.6 Dimension Drawings of the Optical Bus Terminal OBT F-9. . . . . . . . . . . . . . . .
Contents
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F.7 Dimension Drawings Infrared Link Module ILM F-11. . . . . . . . . . . . . . . . . . . . . .
F.8 Dimension Drawings Optical Link Module OLM F-12. . . . . . . . . . . . . . . . . . . . . .
G Operating Instructions ILM / OLM / OBT G-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H General Information H-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
H.1 Abbreviations/Acronyms H-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
I References I-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J SIMATIC NET – Support and Training J-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Glossary Glossary-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Index Index-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
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PROFIBUS NETWORKS 1
PROFIBUS NETWORKS
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1.1 Local Area Networks in Manufacturing and Process Automation
1.1.1 General Introduction
Communication Systems
The performance of control systems is no longer simply determined by the
programmable logic controllers, but also to a great extent by the environment in
which they are located. Apart from plant visualization, operating and monitoring,
this also means a high-performance communication system.
Distributed Systems
Distributed automation systems are being used increasingly in manufacturing and
process automation. This means that a complex control task is divided into smaller
“handier” subtasks with distributed control systems. As a result, efficient
communication between the distributed systems is an absolute necessity. Such
structures have, for example, the following advantages:
SIndependent and simultaneous startup of individual sections of plant/system
SSmaller, clearer programs
SParallel processing by distributed automation systems
This results in the following:
– Shorter reaction times
– Reduced load on the individual processing units
SSystem-wide structures for handling additional diagnostic and logging functions
SIncreased plant/system availability since the rest of the system can continue to
operate if a substation fails.
A comprehensive, high-performance communication system is a must for a
distributed system structure.
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SIMATIC NET
With SIMATIC NET, Siemens provides an open, heterogeneous communication
system for various levels of process automation in an industrial environment. The
SIMATIC NET communication systems are based on national and international
standards according to the ISO/OSI reference model.
The basis of such communication systems are local area networks (LANs) which
can be implemented in one of the following ways:
SElectrically
SOptically
SWireless
SCombined electrical/optical/wireless
SElectrically, intrinsically safe
1.1.2 Overview of the SIMATIC NET System
SIMATIC NET is the name of the communication networks connecting SIEMENS
programmable controllers, host computers, work stations and personal computers.
SIMATIC NET includes the following:
SThe communication network consisting of transmission media, network
attachment and transmission components and the corresponding transmission
techniques
SProtocols and services used to transfer data between the devices listed above
SThe modules of the programmable controller or computer that provide the
connection to the LAN (communications processors “CPs” or “interface
modules”).
To handle a variety of tasks in automation engineering, SIMATIC NET provides
different communication networks to suit the particular situation.
The topology of rooms, buildings, factories, and complete company complexes and
the prevalent environmental conditions mean different requirements. The
networked automation components also make different demands on the
communication system.
To meet these various requirements, SIMATIC NET provides the following
communication networks complying with national and international standards:
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Industrial Ethernet/Fast Ethernet
A communication network for the LAN and cell area using baseband technology
complying with IEEE 802.3 and using the CSMA/CD medium access technique
(Carrier Sense Multiple Access/Collision Detection). The network is operated on
S 50 Ω triaxial cable
S100 Ω Twisted pair cables
SGlass fiber-optic cable
AS-Interface
The actuator sensor interface (AS-i) is a communication network for automation at
the lowest level for connecting binary actuators and sensors to programmable logic
controllers via the AS-i bus cable.
PROFIBUS
A communication network for the cell and field area complying with EN 50170-1-2
with the hybrid medium access technique token bus and master slave. Networking
is on twisted pair, fiber-optic cable or wireless.
PROFIBUS-PA
PROFIBUS-PA is the PROFIBUS for process automation (PA). It connects the
PROFIBUS-DP communication protocol with the IEC 61158-2 transmission
technique.
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1.2 Basics of the PROFIBUS Network
EN 50170
SIMATIC NET PROFIBUS products and the networks they make up comply with
the PROFIBUS standard EN 50170 (1996). The SIMATIC NET PROFIBUS
components can also be used with SIMATIC S7 to create a SIMATIC MPI subnet
(MPI = Multipoint Interface).
Attachable Systems
The following systems can be connected:
SSIMATIC S5/S7/M7/C7 programmable controllers
SET 200 distributed I/O system
SSIMATIC programming devices/PCs
SSIMATIC operator control and monitoring devices or systems
SSICOMP IPCs
SSINUMERIK CNC numerical controls
SSIMODRIVE sensors
SSIMOVERT master drives
SSIMADYN D digital control system
SSIMOREG
SMicro-/Midimasters
SSIPOS reversing power controllers/actuators
SSIPART industry/process controllers
SMOBY identification systems
SSIMOCODE low-voltage switchgear
SCircuit breakers
SSICLIMAT COMPAS compact automation stations
STELEPERM M process control system
SDevices from other manufacturers with a PROFIBUS-compliant interface
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Transmission Media
PROFIBUS networks can be implemented with the following:
SShielded, twisted pair cables (characteristic impedance 150 Ω)
SShielded, twisted pair cables, intrinsically safe (with PROFIBUS-PA)
SFiber-optic cables
SWireless (infrared technology)
The various communication networks can be used independently or if required can
also be combined with each other.
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1.2.1 Standards
SIMATIC NET PROFIBUS is based on the following standards and directives:
IEC 61158–2 to 6: 1993/2000
Digital data communications for measurement and control –
Fieldbus for use in industrial control systems
EN 50170-1-2: 1996
General purpose field communication system
Volume 2 : Physical Layer Specification and Service Definition
PROFIBUS User Organization Guidelines:
PROFIBUS Implementation Guide to DIN 19245
Part 3 (Draft)
Version 1.0 dated 14.12.1995
Fiber Optic Data Transfer for PROFIBUS
Version 2.1 dated 12.98
EIA RS-485: 1983
Standard for Electrical Characteristics of Generators and
Receivers for Use in Balanced Digital Multipoint Systems
SIMATIC NET PROFIBUS-PA is based on the following standards and directives:
EN 50170-1-2: 1996
General Purpose Field Communication System
Volume 2 : Physical Layer Specification and Service Definition
IEC 61158-2: 1993
Fieldbus standard for use in industrial control systems
Part 2 : Physical layer specification and service definition
EN 61158-2: 1994
Fieldbus standard for use in industrial control systems
Part 2 : Physical layer specification and service definition
PTB-Bericht W-53: 1993
Untersuchungen zur Eigensicherheit bei Feldbussystemen
Braunschweig, March 1993
PNO-Richtlinie: 1996
PROFIBUS-PA Inbetriebnahmeleitfaden (Hinweise zur Nutzung
der IEC 61158-2-Technik für PROFIBUS, Art.-Nr. 2.091)
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1.2.2 Access Techniques
TOKEN BUS/Master-Slave Method
Network access on PROFIBUS corresponds to the method specified in EN 50170,
Volume 2 “Token Bus” for active and “Master-Slave” for passive stations.
Slave
Master
Token rotation
(logical ring)
Slave = passive node
Logical token ring
Master-slave relationship
Master Master Master
Master
Master = active node
Slave Slave Slave Slave
Figure 1-1 Principle of the PROFIBUS Medium Access Technique
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Active and Passive Nodes
The access technique is not dependent on the transmission medium. Figure 1-1
“Principle of the PROFIBUS Medium Access Technique” shows the hybrid
technique with active and passive nodes. This is explained briefly below:
SAll active nodes (masters) form the logical token ring in a fixed order and each
active node knows the other active nodes and their order in the logical ring (the
order does not depend on the topological arrangement of the active nodes on
the bus).
SThe right to access the medium, the “Token”, is passed from active node to
active node in the order of the logical ring.
SIf a node has received the token (addressed to it), it can send frames. The time
in which it is allowed to send frames is specified by the token holding time.
Once this has expired, the node is only allowed to send one high priority
message. If the node does not have a message to send, it passes the token
directly to the next node in the logical ring. The token timers from which the
maximum token holding time is calculated are configured for all active nodes.
SIf an active node has the token and if it has connections configured to passive
nodes (master-slave connections), the passive nodes are polled (for example
values read out) or data is sent to the slaves (for example setpoints).
SPassive nodes never receive the token.
This access technique allows nodes to enter or leave the ring during operation.
1.2.3 Transmission Techniques
The physical transmission techniques used depend on the SIMATIC NET
PROFIBUS transmission medium:
SRS-485 for electrical networks on shielded, twisted pair cables
SOptical techniques according to the PROFIBUS User Organization guideline /3/
on fiber-optic cables
SWireless techniques based on infrared radiation
SIEC 61158-2 technique for intrinsically safe and non-intrinsically safe electrical
networks in process control (PROFIBUS-PA) based on shielded, twisted pair
cables.
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1.2.4 Transmission Techniques According to EIA Standard RS-485
EIA Standard RS-485
The RS-485 transmission technique corresponds to balanced data transmission as
specified in the EIA Standard RS-485 /4/. This transmission technique is
mandatory in the PROFIBUS standard EN 50170 for data transmission on twisted
pair cables.
The medium is a shielded, twisted pair cable.
The bus cable is terminated at both ends with the characteristic impedance. Such
a terminated bus cable is known as a segment.
The attachment of the node to the bus is via a bus terminal with a tap line or a bus
connector (maximum 32 nodes per segment). The individual segments are
interconnected by repeaters.
The maximum length of a segment depends on the following:
SThe transmission rate
SThe type of cable being used
Advantages:
SFlexible bus or tree structure with repeaters, bus terminals, and bus connectors
for attaching PROFIBUS nodes
SPurely passive passing on of signals allows nodes to be deactivated without
affecting the network (except for the nodes that supply power to the terminating
resistors)
SSimple installation of the bus cable without specialized experience.
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Restrictions:
SDistance covered reduces as the transmission rate increases
SRequires additional lightning protection measures when installed outdoors
Properties of the RS-485 Transmission Technique
The RS-485 transmission technique in PROFIBUS has the following physical
characteristics:
Table 1-1 Physical Characteristics of the RS-485 Transmission Technique
Network topology: Bus, tree structure with the use of repeaters
Medium: Shielded, twisted pair cable
Possible segment lengths:
(depending on the cable
type, see Table 3.1)
1,000 mFor transmission rates up to 187.5 Kbps
400 m For a transmission rate of 500 Kbps
200 m For a transmission rate of 1.5 Mbps Mbps
100 m For transmission rates of 3.6 and 12 Mbps
Number of repeaters con-
nected in series: Maximum 9
Number of nodes: Maximum 32 on one bus segment
Maximum 127 per network when using repeaters
Transmission rates: 9.6 Kbps, 19.2 Kbps, 45.45 Kbps, 93.75 Kbps, 187.5 Kbps, 500 Kbps, 1.5
Mbps, 3 Mbps, 6 Mbps, 12 Mbps
Note
The properties listed in 1-1 assume a bus cable of type A and a bus terminator
according to the PROFIBUS standard EN 50170–1–2. The SIMATIC NET
PROFIBUS cables and bus connectors meet this specification. If reductions in the
segment length are necessary when using special versions of the bus cable with
increased d.c. loop resistance, this is pointed out in the sections on
“Configuration” and “SIMATIC NET PROFIBUS Cables”.
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1.2.5 Transmission Techniques for Optical Components
PROFIBUS User Organization Guideline
The optical transmission technique complies with the PROFIBUS User
Organization guideline:
“Fiber Optic Data Transfer for PROFIBUS” /3/.
Integrated Optical Interfaces, OBT, OLM
The optical version of SIMATIC NET PROFIBUS is implemented with integrated,
optical ports, optical bus terminals (OBT) and optical link modules (OLM).
Duplex fiber-optic cables are used as the medium made of glass, PCF or plastic
fibers. Duplex fiber-optic cables consist of two conducting fibers surrounded by a
common jacket to form a cable.
Modules with integrated optical ports and optical bus terminals (OBTs) can be
interconnected to form optical networks only with a bus structure.
Using OLMs, optical networks can be installed using a bus, star and ring structure.
The ring structure provides a redundant signal transmission path and represents
the basis for networks with high availability.
Advantages:
SRegardless of the transmission rate, large distances can be covered between
two DTEs
(connections between OLM and OLM up to 15,000 m)
SElectrical isolation between nodes and transmission medium
SWhen plant components at different ground potential are connected, there are
no shield currents
SNo electromagnetic interference
SNo additional lightning protection elements are required
SSimple laying of fiber-optic cables
SHigh availability of the LAN due to the use of a ring topology
SExtremely simple attachment technique using plastic fiber-optic cables over
shorter distances.
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Restrictions:
SFrame throughput times are increased compared with an electrical network
SThe assembly of glass fiber-optic cables with connectors requires specialist
experience and tools
SThe absence of a power supply at the signal coupling points (node attachments,
OLMs, OBTs) stops the signal flow
Characteristics of the Optical Transmission Technique
The optical transmission technique has the following characteristics:
Network topology: Bus structure with integrated optical ports and OBT;
bus, star or ring structure with OLMs
Medium: Fiber-optic cables with glass, PCF or plastic fibers
Link lengths
(point-to-point) With glass fibers up to 15,000 m dependent on the fiber and OLM
type
with plastic fibers:
OLM: 0 m to 80 m
OBT: 1 m to 50 m
Transmission rate: 9.6 Kbps, 19.2 Kbps, 45.45 Kbps, 93.75 Kbps, 187.5 Kbps, 500
Kbps, 1.5 Mbps, 3 Mbps*, 6 Mbps*, 12 Mbps
Number of nodes: Maximum of 127 per network (126 with ring structure with OLMs)
* not with integrated optical ports and OBT
Note
The optical ports of the OLMs are optimized for greater distances. The direct
coupling of the optical ports of an OLM with an OBT or integrated optical ports is
not possible due to differences in the technical specifications.
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1.2.6 Transmission Technique for Wireless Infrared Technology
The wireless PROFIBUS network uses infrared light for signal transmission. The
only transmission medium is a free line-of-sight connection between two nodes.
The maximum distance covered is approximately 15 m. Wireless networks are
implemented using infrared link modules (ILM). The nodes to be networked are
attached to the electrical port of the ILM.
Advantages:
SHigh mobility of attached plant components (for example trolleys)
SCoupling and decoupling from the fixed network with no wear and tear (for
example substitute for a slip ring)
SCoupling without cable installation (temporary setup, inaccessible areas)
SNot protocol dependent
SElectrical isolation between nodes and hardwired network
Restrictions
STransmission rate <= 1.5 Mbps
SFree line-of-sight path required between nodes
SMaximum distance covered <= 15 m
SOnly for single master networks
Characteristics of the Wireless Infrared Transmission Technique
The wireless infrared transmission technique has the following characteristics:
Network topology: Point-to-point
Point-to-multipoint
Medium: Free space with line-of-sight path
Maximum link length: 15 m
Transmission rate ILM: 9.6 Kbps, 19.2 Kbps, 45.45 Kbps, 93.75 Kbps, 187.5 Kbps,
500 Kbps, 1.5 Mbps
Number of nodes: Maximum 127 per network
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1.2.7 Transmission Technique for PROFIBUS-PA
IEC 61158-2 Standard
The transmission technique corresponds to the IEC 61158-2 standard (identical
with EN 61158-2).
The transmission medium is a shielded, twisted pair cable. The signal is
transmitted as a synchronous data stream Manchester-coded at 31.25 Kbps. In
general, the data line is normally also used to supply power to the field devices.
Advantages:
SSimple cabling with twisted pair
SRemote power supply via the signal cores
SIntrinsically safe operation possible (for hazardous areas)
SBus and tree topology
SUp to 32 nodes per cable segment
Restrictions:
STransmission rate restricted to 31.25 Kbps
Characteristics of the IEC 61158-2 Transmission Technique
The main characteristics of the IEC 61158-2 transmission technique are as follows:
Network topology: Bus, star and tree topology
Medium: Shielded, twisted pair cable
Achievable segment lengths: 1900 m
Transmission rate: 31.25 Kbps
Number of nodes: Maximum 127 per network
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Topologies of SIMATIC NET PROFIBUS
Networks 2
Topologies of SIMATIC NET PROFIBUS Networks
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2.1 Topologies of RS-485 Networks
Transmission Rate
When operating SIMATIC NET PROFIBUS in the RS-485 transmission technique,
the user can select one of the transmission rates below:
9.6 Kbps, 19.2 Kbps, 45.45 Kbps, 93.75 Kbps, 187.5 Kbps, 500 Kbps,
1.5 Mbps, 3 Mbps, 6 Mbps or 12 Mbps
Depending on the transmission rate, transmission medium, and network
components different segment lengths and therefore different network spans can
be implemented.
The bus attachment components can be divided into two groups:
SComponents for transmission rates from 9.6 Kbps to a maximum of 1.5 Mbps
SComponents for transmission rates from 9.6 Kbps to a maximum of 12 Mbps
LAN Cable
The transmission media used are the SIMATIC NET PROFIBUS cables described
in Chapter 4. The technical information below applies only to networks
implemented with these cables and SIMATIC NET PROFIBUS components.
Node Attachment
The nodes are attached to the LAN cables via bus connectors, bus terminals or
RS-485 repeaters.
Cable Termination
Each bus segment must be terminated at both ends with its characteristic
impedance. This cable terminator is integrated in the RS-485 repeaters, the bus
terminals, the ILM and the bus connectors and can be activated if required.
Before the cable terminator can be activated, the component must be supplied with
power. With the bus terminals and the bus connectors, this power is supplied by
the connected DTE, whereas the RS-485 repeater, the ILM, and the terminator
have their own power supply.
The RS-485 transmission technique allows the attachment of a maximum of 32
devices (DTEs and repeaters) per bus segment. The maximum permitted cable
length of a segment depends on the transmission rate and the LAN cable used.
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Connecting Segments Using RS-485 Repeaters
By using RS-485 repeaters, segments can be interconnected. The RS-485
repeater amplifies the data signals on the LAN cables. You require an RS-485
repeater when you want to attach more than 32 nodes to a network or when the
permitted segment length is exceeded. A maximum of 9 repeaters can be used
between any two nodes. Both bus and tree structures can be implemented.
Figure 2-1 shows a typical topology using the RS-485 technique with 3 segments
and 2 repeaters.
Terminating resistor activated
PG attached via tap line (6ES7 901-4BD00-0XA0)
for maintenance purposes
RS-485
repeater
RS-485
repeater
S7-400 S7-300 S7-300
S7-400
S7-400
Tap line
OP 25
PG
OP 25
OP 25
PG
Figure 2-1 Topology Using the RS-485 Technique
Increasing the overall span of a network by using repeaters can lead to longer
transmission times that may need to be taken into account when configuring the
network (see Chapter 3).
2.1.1 Components for Transmission Rates up to 1.5 Mbps
All SIMATIC NET bus attachment components can be used for transmission rates
≤ 1.5 Mbps.
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2.1.2 Components for Transmission Rates up to
12 Mbps
The following bus attachment components can be used for transmission rates up
to 12 Mbps:
Table 2-1 Bus Attachment Components for Transmission Rates up to 12 Mbps
Order number
PROFIBUS bus connector with
axial cable outlet 6GK1 500-0EA02
PROFIBUS FastConnect bus connector RS-485
Plug 180
with 180° cable outlet 6GK1500-0FC00
RS-485 bus connector with vertical cable outlet
Without PG interface
With PG interface 6ES7 972-0BA11-0XA0
6ES7 972-0BB11-0XA0
PROFIBUS FastConnect RS-485 bus connector
with 90° cable outlet with insulation displacement terminal
system
max. transmission rate 12 Mbps
Without PG interface
With PG interface
6ES7 972-0BA50-0XA0
6ES7 972-0BB50-0XA0
RS-485 bus connector with 35o cable outlet
Without PG interface
With PG interface 6ES7 972-0BA40-0XA0
6ES7 972-0BB40-0XA0
SIMATIC NET 830-1T connecting cable, preassembled, fitted
with terminating resistors, as link between electrical interface
of an OLM or OBT and the PROFIBUS interface of a
PROFIBUS node.
1.5 m
3 m 6XV1830-1CH15
6XV1830-1CH30
SIMATIC NET 830-2 connecting cable for PROFIBUS,
preassembled cable with two sub-D, 9-pin male connectors,
terminating resistors can be activated.
3 m
5 m
10 m
6XV1830-2AH30
6XV1830-2AH50
6XV1830-2AN10
SIMATIC S5/S7 PROFIBUS connecting cable
for connecting programming devices up to 12 Mbps
preassembled with 2 sub-D connectors, length 3 m 6ES7 901-4BD00-0XA0
PROFIBUS RS-485 repeater 24 V DC, casing with IP 20
degree of protection 6ES7 972-0AA01-0XA0
Bus terminal BT12M 6GK1 500-0AA10
Optical Link Module OLM V3 6GK1 502-_C_00
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Table 2-1 Bus Attachment Components for Transmission Rates up to 12 Mbps, continued
Optical Bus Terminal OBT 6GK1 500-3AA0
PROFIBUS Terminator 6ES7 972-0DA00-0AA0
2.2 Topologies of Optical Networks
Interfacing Electrical and Optical Networks/Components
If you want to cover larger distances with the fieldbus regardless of the
transmission rate or if the data traffic on the bus is threatened by extreme levels of
external noise, you should use fiber-optic cables instead of copper cable.
To interface electrical cables with fiber-optic cables, you have the following
possibilities:
SThe PROFIBUS nodes with a PROFIBUS DP interface (RS-485) are attached
to the optical network using an optical bus terminal (OBT) or using an optical
link module (OLM).
SPROFIBUS nodes with an integrated FO port (for example ET 200M (IM 153-2
FO), S7-400 (IM 467 FO)) can be connected directly to an optical network with
a bus topology.
SOptical networks with a larger network span or structured as redundant rings
should be implemented using OLMs.
The structure of optical networks using optical link modules (OLMs) is described in
detail in later chapters in this manual.
For information about the structure of an optical PROFIBUS network with
PROFIBUS nodes having an integrated FO interface, refer also to the ET200
system manual.
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2.2.1 Topology with Integrated Optical Interfaces
The optical PROFIBUS network with nodes having an integrated FO interface is
structured as a bus topology. The PROFIBUS nodes are interconnected in pairs
by duplex fiber-optic cables.
Up to 32 PROFIBUS nodes with integrated FO interfaces can be connected in
series in an optical PROFIBUS network. If a PROFIBUS node fails, the bus
topology means that all DP slaves on the side away from the DP master are no
longer obtainable for the DP master.
PG/PC/OP
2
Distances between 2
nodes:
Plastic FO cable up to 50 m
PCF FO cable up to 300 m
OBT OBT
S7-400 with IM 467 FO ET 200M with
IM 153-2 FO S7-300
other
nodes
1
1 FO cable
2 LAN cable for PROFIBUS
1
1
2
OP 25
Terminating resistor activated
2
Figure 2-2 PROFIBUS DP Network with Nodes Having Integrated FO Interfaces
For short distances, the preassembled 830-1T or 830-2 connecting cables can be
used as an alternative to the PROFIBUS cable.
Transmission Rate
An optical PROFIBUS network with a bus topology can be operated at the
following transmission rates:
9.6 Kbps, 19.2 Kbps, 45.45 Kbps, 93.75 Kbps, 187.5 Kbps, 500 Kbps, 1.5 Mbps
and 12 Mbps
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PROFIBUS Optical Bus Terminal (OBT)
Using a PROFIBUS optical bus terminal (OBT), an individual PROFIBUS node
without an integrated FO port or a PROFIBUS RS-485 segment can be attached to
the optical PROFIBUS network (see Figure 2-2 ).
The attachment is made to the RS-485 interface of the OBT using a PROFIBUS
cable or a preassembled connecting cable. The OBT is included in the optical
PROFIBUS bus via the FO interface.
2.2.2 Topologies with OLMs
OLMs
The OLMs have a floating electrical channel (similar to the channels on a repeater)
and depending on the version, they have one or two optical channels.
The OLMs are suitable for transmission rates of 9.6 Kbps to 12 Mbps. The
transmission rate is detected automatically.
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Bus Topologies
Figure 2-3 shows a typical example of a bus topology
In a bus structure, the individual SIMATIC NET PROFIBUS OLMs are connected
together in pairs by duplex fiber-optic cables.
At the start and end of a bus, OLMs with one optical channel are adequate, in
between, OLMs with two optical channels are required.
The DTEs are attached to the electrical interfaces of the OLMs. Either individual
DTEs or complete PROFIBUS segments with a maximum of 31 nodes can be
connected to the RS-485 interface.
2
2
Bus connector
ET 200S
PG
OP 25
Terminating resistor activated
ET 200M
1 FO cable
2 LAN cable for PROFIBUS
3 PROFIBUS 830-1T connecting cable
4 PROFIBUS 830-2 connecting cable
3
4
111
4
OP 25
Figure 2-3 Example of a Bus Topology with OLMs
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Star Topologies with OLMs
Several optical link modules are grouped together to form a star coupler via a bus
connection of the RS-485 interfaces. This RS-485 connection allows the
attachment of further DTEs until the maximum permitted number of 32 bus
attachments per segment is reached.
PG
S7-400
OP 25
Terminating resistor activated
Star hub
1 FO cable
2 LAN cable for PROFIBUS
4 PROFIBUS 830-2 connecting cable
4
2
1
2
2
2
1
4
S7-400
Figure 2-4 Example of a Star Topology with OLMs
Optical Channels
The OLMs are connected to the star coupler by duplex fiber-optic cables.
Both DTEs and electrical bus segments can be connected to the OLMs attached
by the duplex fiber-optic cables. Depending on the requirements and the distance,
the duplex cables can be implemented with plastic, PCF or glass (OLM only)
fibers.
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Monitoring FO Links
Using the echo function, the connected OLMs can monitor the fiber-optic sections.
A break on a link is indicated by a display LED and by the signaling contact
responding.
Even if only one transmission direction is lost, the segmentation triggered by the
monitoring function leads to safe disconnection of the OLM from the star coupler.
The remaining network can continue to work without problems.
Mixed Structure
The star coupler can be made up with combinations of OLM/P, OLM/G and
OLM/G-1300 modules and at the RS-485 end with all types.
Redundant Optical Rings using OLMs
Redundant optical rings are a special form of bus topology. By closing the optical
bus to form a ring, a high degree of operational reliability is achieved
Path 1
S7-400 PG
S7-400 OP 25
Path 2
Terminating resistor activated
ET 200M
1 FO cable
2 LAN cable for PROFIBUS
4
243
11
1
1
3 PROFIBUS 830-1T connecting cable
4 PROFIBUS 830-2 connecting cable
Figure 2-5 Network Structure in a Redundant, Optical, Two-Fiber Ring Topology
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A break on a fiber-optic cable between two modules is detected by the modules
and the network is reconfigured to form an optical bus. The entire network remains
operational.
If a module fails, only the DTEs or electrical segments attached to the module are
separated from the ring; the remaining network remains operational as a bus.
The problem is indicated by LEDs on the modules involved and by their signaling
contacts.
After the problem is eliminated, the modules involved cancel the segmentation
automatically and the bus is once again closed to form a ring.
Note
To increase the availability, the duplex cables for the outgoing and incoming paths
in the ring should be routed separately.
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Alternative Cabling Strategy
If the distance between two OLMs turns out to be too long, a structure as shown in
Figure 2-6 can be implemented.
OP 25
S7-400
PG
OP 25
ET 200M PG/PC/OP
S7-400
PG
ET 200M PG/PC/OP
1 FO cable
2 LAN cable for PROFIBUS 3 PROFIBUS 830-1T connecting cable
4 PROFIBUS 830-2 connecting cable
234
4
4
444
23
1
1111
111
1
1
Terminating resistor activated
1
1
Figure 2-6 Alternative Cabling of a Network Structure in an Optical Two-Fiber Ring Topology
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2.2.3 Combination of Integrated Optical Interfaces and OLMs
Note
The optical ports of the OLMs are optimized for greater distances. The direct
coupling of the optical ports of an OLM with an OBT or integrated optical ports is
not possible due to differences in the technical specifications.
Attaching Glass FO Cables to Buses Made up of Integrated Optical Interfaces
The operating wavelength of the integrated optical interfaces and the OBT is
optimized for the use of plastic or PCF fibers. The direct attachment of glass FO
cables is not possible.
If a link with glass FO cable is required, for example to span distances of more
than 300 m, this link must be implemented with OLMs. The attachment of glass
links to the optical bus made up of integrated optical interfaces is via the RS-485
interface of an OBT. The following schematic shows an example of an application:
Further
nodes
Field device without
FO interface
3
PG
ET 200M with
IM 153-2 FO
OBT OBT
OBT
OBT
3
11 2
4
11
1
1 FO cable
2 LAN cable for PROFIBUS 3 PROFIBUS 830-1T connecting cable
4 PROFIBUS 830-2 connecting cable
Terminating resistor activated
up to 15 km
Figure 2-7 Attachment of an Optical Glass Link to an Optical Bus Made up of Integrated Optical
Interfaces
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2.3 Topologies of Wireless Networks
Infrared Link Module (ILM)
In SIMATIC NET, wireless PROFIBUS networks are implemented with the “Infrared
Link Module (ILM)”.
Figure 2-8 PROFIBUS ILM
Maximum Length of a Link
Regardless of the transmission rate, the maximum length of a link is 15 m. The
infrared light used for data transmission is radiated at an angle of +/- 10o around
the mid axis. This means that at a distance of 11 m, an ILM illuminates a circular
area with a diameter of 4 m. The communication partner must be within this
illuminated area. There must be an uninterrupted line-of-sight path between both
ILMs. The ILMs are suitable for transmission rates of 9.6 Kbps to 1.5 Mbps.
Point-to-Point Link
To implement a point-to-point link, two ILMs are positioned opposite each other so
that each is located within the infrared light cone of the other. The maximum
distance between two modules is 15 m.
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Infrared
link
0.5 to 15 m
PROFIBUS
master network segment PROFIBUS
slave network segment
ILM ILM
Master
S7-400
Master OP 25
Master
PG/PC/OP Slave
ET 200M
Slave
ET 200S
Terminating resistor activated
2 LAN cable for PROFIBUS
2
2
2
2
2
Figure 2-9 Point-to-Point Link with Two PROFIBUS ILMs
Figure 2-9 illustrates the typical structure of a PROFIBUS network with master and
slave nodes and an infrared link with two PROFIBUS ILMs. The infrared link is
implemented as a point-to-point link between the two PROFIBUS ILMs. The two
PROFIBUS ILMs replace a cable connection between the two network segments.
Remember that only slave nodes are permitted in the slave network segment.
Point-to-Multipoint Link
Several ILMs are positioned opposite to a single ILM so that several ILMs are in
the infrared light cone of another ILM. Only the ILMs positioned opposite each
other can exchange data. A data exchange between adjacent ILMs is only possible
by using a surface that reflects infrared light. If you consider this option, remember
that the length of the link is the path from the ILM to the reflector and from the
reflector to the partner ILM. Signal attenuation will also occur since the reflector
can only reflect part of the infrared light to the partner ILM. Such losses mean a
reduction in the maximum length of a link.
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Infrared
link 1
0.5 to 15 m
Infrared
link 2
0.5 to 15 m
PROFIBUS
slave network segment 1
PROFIBUS
slave network segment 2
Infrared
link 3
0.5 to 15 m
PROFIBUS
slave network segment 3
ILM
ILM
ILM
ILM
Slave
ET 200M
Terminating resistor activated
Slave
S7-300
Slave
ET 200M
Slave
S7- 300
Slave
ET 200M
Master OP 25
Master
S7-400
Master
PG/PC/OP
2
2
2
2
22
2
2
2
2 LAN cable for PROFIBUS
Slave
ET 200S
Figure 2-10 Point-to-Multipoint Link Using PROFIBUS ILMs (One Master Subnet, Three Subnets with
Slaves)
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2.4 Topologies with PROFIBUS-PA
Bus and Star Topology
With PROFIBUS-PA, the topology can be either a bus or star.
SpliTConnect System
The SpliTConnect tap (T tap) allows the structuring of a bus segment with DTE
attachment points. The SpliTConnect tap can also be cascaded with the
SpliTConnect coupler to form attachment distributors. Using the SpliTConnect
terminator, the tap can be extended to become the segment terminator.
PROFIBUS-DP
PROFIBUS-PA
24 V DC
DP/PA coupler
(bus terminator
integrated)
Distributor made
up of T taps
Bus
T tap
Star
Main cable
Tap line
T tap with
integrated
bus terminator
Tap line
Field devices attached
via M12 connector
Figure 2-11 Bus and Star Topology
Field Device Power Supply via PROFIBUS-PA
When using the DP/PA bus coupler, the power for the field devices is supplied via
the data line of PROFIBUS-PA.
Design
The total current of all field devices must not exceed the maximum output current
of the DP/PA coupler. The maximum output current therefore limits the number of
field devices that can be attached to PROFIBUS-PA.
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PROFIBUS-DP
PROFIBUS-PA
Imax I1I2I3... ...Im
Imax x 400 mA
24 V DC Field device
1Field device
2Field device
3... Field device
...m
DP/PA coupler
PROFIBUS-DP
PROFIBUS-PA
Imax I1I2I3... ...In
Imax x 90 mA
24 V DC
Explosion-protected area
Field device
1Field device
2Field device
3... Field device
...n
DP/PA coupler Ex [i]
Protection EEx [ia] II C
6ES7 157-0AD00-0XA0
Imax x 110 mA
DP/PA coupler Ex [i]
Protection EEx [ib] II C
6ES7 157-0AD80-0XA0
6ES7 157-0ACx0-0XA0
Figure 2-12 Field Device Power Supply in the Hazardous and Non-Hazardous Area
Expansion
If the maximum output current of the DP/PA coupler is exceeded, you must include
a further DP/PA coupler.
Total Cable
The total cable is the total of the main cable and all the tap lines.
When using a standard PROFIBUS-PA cable with a cross-sectional area of
0.8 mm2, the maximum length of the total cable (with a maximum number of field
devices and worst-case positioning at the end of the cable) is as follows:
S560 m for DP/PA coupler (6ES7 157-0AC00-0XA0)
S680 m for DP/PA coupler (6ES7 157-0AD80-0XA0)
S790 m for DP/PA coupler Ex [i] (6ES7 157-0AD00-0XA0)
Tap Line
The maximum permitted tap line lengths are listed in Table 2-2. You should also
remember the maximum length of the total cable (see above).
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Table 2-2 Tap Line Lengths for DP/PA Couplers
Number of tap lines Maximum length of the tap line
DP/PA coupler DP/PA coupler Ex [i]
1 to 12 max. 120 m max. 30 m
13 to 14 max. 90 m max. 30 m
15 to 18 max. 60 m max. 30 m
19 to 24 max. 30 m max. 30 m
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2.5 Connectivity Devices
2.5.1 DP/DP Coupler
Uses
The PROFIBUS-DP/DP coupler is used to link two PROFIBUS-DP networks
together. Byte data (0 to 244 bytes) is transmitted from the DP master of a first
network to the DP master of another network and vice-versa.
This principle corresponds to the hardware wiring of inputs and outputs. The
coupler has two independent DP interfaces with which it attaches to the two DP
networks.
The DP/DP coupler is a slave attached to the DP networks. The data exchange
between the two DP networks involves internal copying within the coupler.
Figure 2-13 DP/DP Coupler
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Design
The DP/DP coupler is installed in a compact, 40 mm wide casing.
The module can be installed (vertically when possible) on a standard rail with no
gaps being necessary.
The coupler is attached to each PROFIBUS-DP network via an integrated 9-pin
sub-D connector.
Master
S7-400
Master OP 25
Master
PG/PC/OP
Slave
ET 200M
Slave
ET 200M
DP/DP COUPLER
SIEMENS
Master
S7-300
Terminating resistor activated
2
2
2
2
2
2
2 LAN cable for PROFIBUS
Figure 2-14 Configuration Example of the DP/DP Coupler
How the DP/DP Coupler Works
The DP/DP coupler permanently copies output data of one network to the input
data of the other network (and vice-versa).
Parameter Assignment
The PROFIBUS-DP addresses are set using two DIP switches on the top of the
device. The configuration is set using the GSD file and the configuration tool of the
attached PROFIBUS-DP master. The data length is set with the relevant
configuration tool.
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2.5.2 Connecting to PROFIBUS-PA
DP/PA Bus Coupling
The DP/PA bus coupler is the link between PROFIBUS-DP and PROFIBUS-PA.
This means that it connects the process control systems with the field devices of
the process automation (PA).
The DP/PA bus coupler is made up of the following modules:
SDP/PA Coupler Ex [i] (6ES7 157-0ADx0-0XA0)
SDP/PA Coupler (6ES7 157-0ACx0-0XA0)
SDP/PA Link IM 157 (6ES7 157-0AA80-0XA0)
To implement a DP/PA link in redundant operation, you also require the following:
SBus module BM IM 157 for 2 x IM 157 (6ES7 195-7HE80-0XA0)
SBus module BM DP/PA Coupler for 1 DP/PA Coupler (6ES7 195-7HF80-0XA0)
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2.5.3 DP/PA Coupler
Figure 2-15 below illustrates how the DP/PA coupler is included in the system.
DP master
Process control
level
PROFIBUS-DP
PROFIBUS-PA
ET200X
Field level
Explosion-protected
area
DP/PA coupler Ex [i] DP/PA coupler
“Programming, Operating
and Monitoring”
SIMATIC PCS 7 or other
tool for parameter assign-
ment
Industrial Ethernet
PDM or other tool for parame-
ter assignment
Cell level
Figure 2-15 Linking the DP/PA Coupler into the System
Uses of the DP/PA Coupler
The DP/PA coupler is available in two versions:
SDP/PA coupler Ex [i]: You can attach all field devices certified for
PROFIBUS-PA and that are located within the hazardous area.
SDP/PA coupler: You can attach all field devices that are certified for
PROFIBUS-PA and that are outside the hazardous area.
The DP/PA coupler is an accompanying component according to EN 50014 or
EN 50020 and must be installed outside the hazardous area.
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Properties of the DP/PA Coupler (General)
The DP/PA coupler has the following characteristics:
SElectrical isolation between PROFIBUS-DP and PROFIBUS-PA
SConversion of the physical transmission mechanism between RS-485 and IEC
61158-2
SDiagnostics using LEDs
STransmission rate on PROFIBUS-DP 45.45 Kbps
STransmission rate on PROFIBUS-PA 31.25 Kbps
SIntegrated power supply unit
Properties of the DP/PA Coupler Ex [i]
The DP/PA coupler Ex [i] (6ES7 157-0AD00-0XA0) has the following additional
characteristics:
SType of Protection EEx [ia] II C
SIntrinsic safety
SIntegrated, intrinsically safe power supply unit and integrated barrier
The DP/PA coupler Ex [i] (6ES7 157-0AD80-0XA0) has the following
characteristics that differ from the DP/PA coupler EX [i] (6ES7 157-0AD00-0XA0):
SType of protection EEx [ib] II C
SExtended environmental conditions (SIMATIC outdoor)
Configuring the DP/PA Coupler
SThe DP/PA coupler can be used in SIMATIC S5 and S7 and with all DP masters
that support 45.45 Kbps.
SThe DP/PA coupler does not need to be configured. You must only set the
transmission rate of 45.45 Kbps for the relevant DP network during
configuration.
You then configure the PA field devices just as normal DP slaves using the DP
configuration tool and the appropriate GSD file. You can configure the PA field
devices with SIMATIC PDM or with any other vendor-specific software
configuration tool.
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2.5.4 DP/PA Link
Definition
The DP/PA link consists of the IM 157 and up to a maximum of five DP/PA
couplers. The DP/PA link is a DP slave at the PROFIBUS-DP side and a PA
master at the PROFIBUS-PA side.
Uses
With the DP/PA link, you have an isolated interconnection between PROFIBUS-PA
and PROFIBUS-DP with transmission rates of 9.6 Kbps to
12 Mbps.
The DP/PA link can only be used in SIMATIC S7.
Figure 2-16 below shows where the DP/PA link fits in.
PROFIBUS-DP
ET200X
Field level
Industrial Ethernet
IM 157
DP/PA coupler
12 34 5
PROFIBUS-PA
Field devices of PROFIBUS-PA
“Programming, Operating
and Monitoring”
SIMATIC PCS 7 or other
tool for parameter assign-
ment
PDM or other tool for para-
meter assignment
DP/PA Link
S7-DP master
Cell level
Process control
level
Gateway
S7-400
Figure 2-16 Location of the DP/PA Link
The DP/PA link must be installed outside the hazardous area.
The DP/PA link is configured with STEP 7, Version 4.02 or higher.
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Properties
The DP/PA link has the following characteristics:
SDiagnostics with LEDs and the user program
SDP slave and PA master
SCan be operated at all transmission rates (9.6 Kbps to 12 Mbps)
SOnly DP/PA couplers can be operated with an IM 157
How the DP/PA Link Works
Figure 2-17 shows how the DP/PA link with the IM 157 and the DP/PA couplers
functions.
SThe DP/PA link maps the underlying PROFIBUS-PA system on a DP slave.
SWith the DP/PA link, PROFIBUS-DP is completely isolated from
PROFIBUS-PA.
SThe PA master and PA slaves form a separate, underlying bus system.
SThe number of DP/PA couplers simply reflects the amount of current required.
All DP/PA couplers along with the attached PA field devices form one common
PROFIBUS-PA bus system.
DP slave
S7 backplane bus
IM 157
DP/PA coupler
(max. 5) PA
PA PA
DP/PA Link
PA
PA master
DP
Figure 2-17 The DP/PA Link with DP/PA Couplers
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Rules
The following rules must be taken into account when extending PROFIBUS-PA:
SThere can be a maximum of 31 PA field devices in a PROFIBUS-PA system
SOnly one device supplying power (=DP/PA coupler) can be connected in a
physical PROFIBUS-PA segment.
SA maximum of 31 PA field devices can be attached to a DP/PA link. The
maximum number of attachable PA field devices per physical PROFIBUS-PA
segment or per DP/PA coupler is limited by the maximum output current of the
DP/PA coupler and the I/O data to be transferred.
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2.5.5 Connecting PROFIBUS-DP to RS-232C
Design
Figure 2-18 DP/RS-232C Link for PROFIBUS-DP
The DP/RS-232C link consists of a compact 70 mm housing for standard rail
mounting. Ideally the module should be installed vertically. The modules can be
inserted one beside the other without gaps being necessary. The module is
attached to PROFIBUS-DP via a 9-pin sub-D female connector. The RS-232C
interface is implemented as a 9-pin sub-D connector.
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Uses
The PROFIBUS-DP/RS-232C link is a converter between an RS-232C (V.24)
interface and PROFIBUS-DP. Devices with an RS-232C interface can be linked to
PROFIBUS-DP with the DP/RS-232C link. The DP/RS-232C link supports the
procedures 3964 R and free ASCII protocol.
Configuration
with STEP 7
Master
S7-400
SIEMENS DP/RS-232C Link
Device
PROFIBUS-DP
RS-232C
Serial procedure
PROFIBUS
LAN cable
Figure 2-19 Example of a Configuration with DP/RS-232C Link
How the DP/RS-232C Link Works
The PROFIBUS-DP/RS-232C link is connected with the device over a
point-to-point connection. The PROFIBUS-DP/RS-232C link converts to the
PROFIBUS-DP protocol. Consistent data are transferred in both directions. A
maximum of 224 bytes of user data can be transferred per frame.
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Parameter Assignment
The PROFIBUS-DP address can be set using two switches on the front panel. To
configure the unit, you use the GSD file and the configuration tool of the connected
device, for example STEP 7.
2.5.6 Connecting with the DP/AS-Interface Link 65
Design
Figure 2-20 DP/AS-Interface Link 65
The DP/AS-interface link has a robust aluminum die-cast casing with the degree of
protection IP 65. In terms of water tightness, it complies with the standard
“Enclosures for Electrical Equipment UL 50, Type 4”, and is suitable for
temperatures from -25 °C to +60 °C. On the casing, there are diagnostic LEDs for
PROFIBUS-DP and the AS interface. The node address for PROFIBUS-DP can be
set using DIL switches or using an EEPROM. To set the address using the
EEPROM, you can use the ET 200 handheld. The DP/AS-interface link can be
installed anywhere and in any position. The attachment to PROFIBUS-DP is via a
12-pin round connector, the attachment to AS-interface is via a 4-pin modular
connector (M12 AS-interface attachment).
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Uses
The DP/AS-interface link connects the PROFIBUS-DP fieldbus with the
AS-interface. The DP/AS-interface link 65 can be connected to any
PROFIBUS-DP master capable of handling parameter assignment and diagnostic
frames with a length of 32 bytes. The DP/AS-interface link 65 allows the
actuator-sensor interface to be used as a subnet for PROFIBUS-DP. You can
therefore combine the advantages of PROFIBUS-DP and AS-interface in a
common bus system.
Branch
AS-i power supply
Active modules
(with slave ASIC)
Passive modules
(without slave ASIC)
AS-i
cable
Actuator/sensor
with slave ASIC
Field level networking with PROFIBUS-DP
DP/AS-Interface Link 65
External power supply
24 V DC
Figure 2-21 Example of a Configuration with DP/AS-Interface Link 65
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How the DP/AS-Interface Link 65 Works
The DP/AS-interface link 65 links PROFIBUS-DP with the AS-interface with degree
of protection IP 65. The DP/AS-interface link 65 can be connected to any
PROFIBUS-DP master that can send parameter assignment frames with a length
of 32 bytes. To act as a connectivity device between the two bus systems, the
DP/AS-interface link has the functionality of an AS-interface master towards the
AS-interface and the functionality of a PROFIBUS-DP slave towards
PROFIBUS-DP. Up to 31 DP/AS-interface slaves can be attached to the
DP/AS-interface link. The DP/AS-interface link is therefore a modular slave with up
to 31 modules from the point of view of PROFIBUS-DP.
Parameter Assignment
Like all other components of the distributed I/O system ET 200, the
DP/AS-interface link is an integral part of STEP 7 and COM PROFIBUS. You can
display information about working with the parameter assignment software and
configuring at any time using the context-sensitive help.
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2.5.7 Connecting with the DP/AS-Interface Link 20
Design
Figure 2-22 DP/AS-Interface Link 20
The DP/AS-interface link 20 consists of a small, compact casing with degree of
protection IP20. The LEDs on the front panel indicate the following:
SAS-Interface statuses
SAttached and active slaves and their operability
SPROFIBUS slave address
SPROFIBUS bus errors and diagnostics
The DP/AS-interface link 20 also has a button with which the operating mode can
be changed, with which the existing configuration can be adopted and for setting
the PROFIBUS slave address.
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Uses
The DP/AS-interface link 20 implements a small, cost-effective link between
PROFIBUS and AS-interface. The DP/AS-interface link 20 requires no additional
power supply, the power is supplied on the AS-interface cable. The AS-interface
segment can be started up without PROFIBUS-DP being in operation.
The DP/AS-interface link 20 is a PROFIBUS-DP slave (complying with EN 50170)
and AS-interface master in one unit and provides a simple link between
PROFIBUS-DP and the AS-interface. The DP/AS-interface link 20 allows system
attachment of the following:
SPROFIBUS-DP master, for example CP 342-5 for S7-300, CP 443-5 extended
for S7-400, CP 5431 FMS/DP or IM 308C for SIMATIC S5, CP 5412 (A2) for
PC or CP 5611/CP 5511 for PCs with DP-SOFTNET software.
SOther systems with DP master functionality
Branch
AS-i power supply
Active modules
(with slave ASIC)
Passive modules
(without slave ASIC)
AS-i
cable
Actuator/sensor
with slave ASIC
Field level networking with PROFIBUS-DP
DP/AS-Interface Link 20
SF
APF
CER
AUP
CM 6GK7 1415 2AA0
1
2
3
4
5
6
7
8
0
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31 X 2
34
DIA
ADR
BF DP/AS-Interface
Link 20
Figure 2-23 Example of a Configuration with DP/AS-Interface Link 20
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How the DP/AS Interface Link 20 Works
With the DP/AS-interface link 20, up to 248 binary elements are accessible to a DP
master on the AS-interface (124 inputs and 124 outputs). You can therefore
combine the advantages of PROFIBUS-DP and AS-interface in a plant. The
DP/AS-interface link 20 can be used in the AS-interface standard mode (M2). In
this mode, the data bits of the slaves are accessible. The following master calls are
supported.
SChange address
SWrite parameters
SRead configuration data
SSet configuration mode
SConfigure actual configuration
Parameter Assignment
The DP/AS-interface link 20 is supported by STEP 7 (V4.1 and higher) and COM
PROFIBUS (V 3.2 and higher). The type and GSD files are shipped along with the
manual. On the AS-interface side, no special configuration is necessary; the
AS-Interface segment can be put into operation without PROFIBUS.
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2.5.8 Connecting PROFIBUS-DP to instabus EIB
Design
Figure 2-24 DP/EIB Link
The DP/EIB link allows a connection between the two open standard systems for
industrial automation PROFIBUS-DP and building automation instabus EIB. This
provides an ideal connection between the high performance of the PROFIBUS
components and the extreme flexibility of the instabus EIB system.
The DP/EIB link is a DP slave (complying with EN 50170) and at the same time a
node on the instabus EIB.
The displays and operating controls are as follows:
SLED for EIB bus errors
SLED for PROFIBUS bus errors
SLED for power supply OK
SCoding switch for the PROFIBUS address
SProgramming button for EIB.
Uses
The DP/EIB link can be used wherever PROFIBUS or instabus EIB is used; in
other words, a distinction can be made between two areas of application:
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Building Automation
In other words, we are assuming that instabus EIB exists and that you want to
use, for example, an S7 PLC for administrative control tasks or, for example, an
HMI system for central operator control and monitoring. The main emphasis here
is in offices or apartment blocks etc.
The simplest option for connecting these systems to instabus EIB is provided by
the DP/EIB link since these systems generally access the peripheral devices via
PROFIBUS.
The main areas of application are as follows:
S(Primary) open-loop control, closed-loop control and monitoring of heating
systems
SVentilation, air-conditioning, and
SEnergy management and optimization
Industrial Automation
In this case, we assume that PROFIBUS exists and that you would like to include
the electrical components of an assembly line, plant or production building in the
automation. The main emphasis here is the equipment of industrial buildings
themselves.
Applications include, for example, the following:
Slighting control
Sshutter control,
Smeasurement of temperature, wind strength, or the position of the sun,
Sdoor control and
Sbuilding access controls.
The instabus EIB is specifically designed for such tasks and provides a wide
selection of components and a large network span (maximum 1000 m per bus). Up
to 11,520 instabus EIB devices are possible in one network (a maximum of 15
areas each with a maximum of 12 buses each with up to 64 nodes).
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instabus EIB
PROFIBUS
ETS2
Siemens
EIB product database
Step 7 or COM PROFIBUS
+
EIB-
RS-232
interface
ET 200M
S7-300 ET 200S
Figure 2-25 Example of a System Structure using DP/EIB Link
How the DP/EIB Link Works
The data objects of the instabus EIB are mapped in the PROFIBUS I/O area.
The structuring of the PROFIBUS slave I/O area and the number of EIB data
objects with which the DP master communicates is decided by a selectable profile.
In total, five different profiles are available that allow the user to adapt the DP/EIB
link to the relevant application and to make optimum use of the memory resources
of the DP master.
You configure the system (in other words set a profile) via PROFIBUS using, for
example STEP 7 or COM PROFIBUS. The number of data objects specified by the
selected profile can be assigned to the required instabus EIB components with the
instabus EIB configuration software ETS 2.
Due to the database entry of the DP/EIB link, the instabus EIB configuration
software ETS 2 is capable of displaying the number and data type of the valid
instabus EIB data objects to the user. This allows a simple error-free assignment to
be made. Following configuration, the PROFIBUS-DP master can both write and
read the instabus EIB data objects.
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Configuring
The link module can be configured as a DP slave, for example with the standard
tools STEP 7 or COM PROFIBUS and on the instabus EIB using the configuration
software ETS 2.
SDP
A GSD file is supplied with the manual. The DP slave address is set with a
coding switch on the DP/EIB link.
Sinstabus EIB
The database entry of the DP/EIB link for instabus EIB configuration software
ETS 2 is supplied with the DP/EIB manual.
For further details, refer to the DP/EIB link manual.
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3.1 Configuring Electrical Networks
PROFIBUS Networks
PROFIBUS networks were specially designed for use in an industrial environment
and one of their main features is their degree of immunity to electromagnetic
interference resulting in high data integrity. To achieve this degree of immunity,
certain guidelines must be adhered to when configuring electrical networks.
Parameters
The following parameters must be taken into account when planning an electrical
network:
SThe transmission rate required for the task
(within a network, only one uniform transmission rate can be used)
SThe required number of nodes
SThe type of network components required (bus terminals, bus connectors,
connecting cables)
SThe LAN cables to be used
SThe required segment lengths
SThe electromagnetic and mechanical environment of the cabling (for example
surge voltage protection, cable route)
SThe number of RS-485 repeaters between any two DTEs is limited to a
maximum of 9
SIncreasing the overall span of a network by using repeaters can lead to longer
transmission times that may need to be taken into account when configuring the
network (see Section 3.3).
Cable Termination
Regardless of the transmission rate, the ends of all segments must be terminated
by activating the terminating resistor in the connector. After the terminating resistor
has been activated, no further cable sections are permitted.
The terminating resistor is only effective when it is supplied with voltage. This
means that the corresponding DTE or the RS-485 repeater must be supplied with
power. As an alternative, the PROFIBUS terminator can be used as a permanent
terminating resistor.
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Note
The power supply to terminating resistors must not be interrupted by turning off
the DTE or repeater or by unplugging the bus connector or tap line. If the power
supply to the terminating resistors cannot be guaranteed, the PROFIBUS
terminator must be used.
3.1.1 Segments for Transmission Rates up to a Maximum of 500 Kbps
Transmission Rates up to a Maximum of 500 Kbps
The following maximum segment lengths can be implemented with the SIMATIC
NET PROFIBUS LAN cables:
Table 3-1 Possible Segment Lengths
Segment Length for Cable Type
Transmission Rate
in Kbps – FC Standard Cable
– FC Robust Cable
– FC FRNC Cable
– FC Food Cable
– FC Underground Cable
– SIENOPYR–FR Marine Cable
– FC Trailing Cable
– PROFIBUS Flexible Cable
– PROFIBUS Festoon Cable
9.6 1000 m 900 m
19.2 1000 m 900 m
45.45 1000 m 900 m
93.75 1000 m 900 m
187.5 1000 m 700 m
500 400 m 400 m
The maximum permitted number of bus attachments (DTEs, repeaters, OLMs,
BT12 M,...) to one segment is 32.
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Length of the Tap Lines
If you do not attach the LAN cable directly to the bus connector (for example,when
using a PROFIBUS bus terminal), you must take into account the maximum
possible tap line length!
The following table shows the maximum permitted lengths of tap lines per bus
segment:
Table 3-2 Lengths of the Tap Lines per Segment
Transmission
rate Max. length of the tap
lines per segment Number of nodes with tap line
length of ...
1.5 m or 1.6 m 3 m
9.6 – 93.75 Kbps 96 m 32 32
187.5 Kbps 75 m 32 25
500 Kbps 30 m 20 10
3.1.2 Segments for a Transmission Rate of 1.5 Mbps
Transmission Rate 1.5 Mbps
The following maximum segment length can be implemented with the SIMATIC
NET PROFIBUS LAN cable:
Table 3-3 Possible Segment Lengths
Segment Length for Cable Type
Transmission Rate
in Kbps – FC Standard Cable
– FC Robust Cable
– FC FRNC Cable
– FC Food Cable
– FC Underground Cable
– SIENOPYR–FR Marine Cable
– FC T railing Cable
– PROFIBUS Flexible Cable
– PROFIBUS Festoon Cable
1.500 200 m 200 m
Node Attachments at 1.5 Mbps
Each attachment of a node to the LAN cable represents a capacitive mismatch that
has no effect at lower transmission rates. At a transmission rate of 1.5 Mbps,
however, problems can arise due to these mismatches if the following guidelines in
terms of type, number and distribution of node attachments are not adhered to.
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Value Factors
To be able to define permitted configurations, a method is necessary with which
the attached components can be evaluated in terms of their capacitive bus load.
This is achieved by assigning value factors to the components
(see Table 3-4 ).
PROFIBUS interfaces implemented as 9-pin sub-D female connectors (CPs,
OLMs...), do not have their own value factors. These are already taken into
account in the values listed in the table.
Table 3-4 Values for Segments at 1.5 Mbps
Product Name Value (V)
Bus terminal with 1.5 m long tap line
(Order no. 6GK1 500-0AA00, Version 2) 1.5
Bus terminal with 1.5 m long tap line, with PG interface
(Order no. 6GK1 500-0DA00, Version 2) 1.5
Bus terminal with 3.0 m long tap line
(Order no. 6GK1 500-0BA00, Version 2) 2.5
Bus connector with 30° cable outlet
(Order no. 6ES7 972-0BA30-0XA0) 0.7
Bus connector with axial cable outlet (Order no.: 6GK1 500-0EA02)
Bus connector with axial cable outlet for FastConnect system (Order no.: 6GK1 500-0FC00)
Bus connector with 90°cable outlet (Order no.: 6ES7 972-0BA11-0XA0)
Bus connector with 90°cable outlet with PG interface (Order no.: 6ES7 972-0BB11-0XA0)
Bus connector with 90°cable outlet for FastConnect system (Order no.: 6ES7
972-0BA50-0XA0)
Bus connector with 90°cable outlet with PG interface (Order no.: 6ES7 972-0BB50-0XA0)
Bus connector with 35° cable outlet (Order no.: 6ES7 972-0BA40-0XA0)
Bus connector with 35° cable outlet with PG interface
(Order no.: 6ES7 972-0BB40-0XA0)
0.1
Bus terminal BT12M (Order no. 6GK1500-0AA10) 0.1
RS-485 repeater (attachment of bus segments) (Order no. 6ES7 972-0AA01-0XA0) 0.1
PROFIBUS terminator (active RS-485 attachment element)
(Order no. 6ES7 972-0DA01-0AA0) 0.1
SIMATIC S5/S7 connecting cable for 12 Mbps PG attachment to PROFIBUS-DP (Order
no.: 6ES7 901-4BD00-0XA0) 0.5
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Rules
At a transmission rate of 1.5 Mbps, the following rules apply to the permitted
number of nodes and their distribution/layout on a SIMATIC NET PROFIBUS
segment:
1. The maximum permitted number of nodes on any segment is 32.
2. The sum of the values of all the connection elements in a segment must be
≤ 25.
3. The rules for the distance between adjacent connection elements are as follows
(distance in this case is the length of the LAN cable):
3.1 If the distance between adjacent connection elements is greater than
10 m, the values of the connection elements can be ignored.
3.2 If the distance between adjacent connections elements is greater than the
sum of the two values of the elements in meters, the layout is not
critical and no additional conditions need to be taken into account.
The value of the PG connecting cable, SIMATIC S5/S7 connecting cable
12 Mbps must be added to the value of the corresponding
connection element.
3.3 If the minimum clearance described in 3.2 is not kept to, this results in
a group being formed and the following additional conditions must be met:
–Attachment elements can be arranged as close to each other as
required providing the sum of their values does not exceed the value 5.
–The distance in meters between two adjacent groups must be at least
as large as the sum of the values of the two groups.
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Table 3-5 Examples Illustrating the Configuration Rules
No special conditions if the length of the LAN cable
between two DTEs > 10 m LAN cable > 10 m
> 10 m
S7-400 S7-300
No special conditions if the length of the LAN ca-
bles between two DTEs is greater than the sum of
values of both DTEs.
If a bus terminal or a bus connector has a PG inter-
face, a connected PG connecting cable must be
taken into account when calculating the values.
Bus cable, e.g. 5 m
V = 1.5 + 1.0 + 0.1 = 2.6
5 m > 2.6 m (sum of the values in
meters)
5 m
V = 1.0
V = 1.5
V = 0.1
S7-400
S7-300
Take the values of a group into account if the sum
of the values is greater than the LAN cable bet-
ween the DTEs.
Elements can be close to each other providing the
total value of a group does not exceed 5.
LAN cable e.g. 0.5 m group
V = 1.5 + 1.5
0.5 m < 3 m ⇒ group formed
⇒ sum of the values ≤ 5
0.5 m
V = 1.5 V = 1.5
S7-400
S7-400
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3.1.3 Segments for Transmission Rates up to a Maximum of
12 Mbps
Transmission Rate up to a Maximum of 12 Mbps
Table 3-6 Possible Segment Lengths
Segment Length for Cable Type
Transmission Rate
in Mbps – FC Standard Cable
– FC Robust Cable
– FC FRNC Cable
– FC Food Cable
– FC Underground Cable
– SIENOPYR–FR Marine Cable
– FC T railing Cable
– PROFIBUS Flexible Cable
– PROFIBUS Festoon Cable
3100 m 100 m
6100 m 100 m
12 100 m 100 m
When planning segments for transmission rates from 3 Mbps to a maximum of 12
Mbps, the following factors must be taken into account:
STo attach DTEs to bus segments, only the bus connectors permitted for 12
Mbps or the BT12M bus terminal can be used.
SThe maximum length of a segment must not exceed 100 m.
SThe maximum number of bus attachments (nodes, OLMs, RS-485 repeaters,...)
in one segment is restricted to 32.
STo attach a programming device or PC via a tap line, only the “SIMATIC S5/S7
connecting cable, 12 Mbps, order no. 6ES7901-4BD00-0XA0” can be used.
Note
If several bus connectors are used at electrically short distances (in other words,
the cable length between adjacent connectors is less than 1 m) (for example,
several slaves in one cubicle), avoid disconnecting several bus connectors at the
same time for longer periods. Disconnecting more than one bus connector does
not necessarily mean errors but may well reduce the reliability (immunity to noise)
of a segment.
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3.1.4 Configuring Electrical Networks with RS-485 Repeaters
RS-485 Repeater
To increase the number of nodes (>32) in a network or to extend the cable length
between two nodes, segments can be connected together using RS-485 repeaters
to form a network. Figure 3-1 illustrates how several segments can be connected
together with repeaters to create a network.
The RS-485 repeaters support all transmission rates from
9.6 Kbps to 12 Mbps.
Terminating resistor activated
RS-485
repeater
ET200S
ET200M
OP 25
PG
OP 25
OP 25
S7-300
OP 25
OP 25
OP 25
S7-300
S7-300
ET200M
ET200S
Figure 3-1 Layout of an Electrical PROFIBUS Network Using RS-485 Repeaters
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Configuring
When configuring an electrical network with RS-485 repeaters, the following
conditions must be taken into account:
SThe maximum segment length for the transmission rate must be adhered to
(see Table 3-1, Table 3-3, Table 3-6,)
SThe maximum number of bus attachments (nodes, OLMs, RS-485 repeaters,...)
in one segment is restricted to 32. There may be further restrictions at a
transmission rate of 1.5 Mbps (see Section 3.1.2).
SThe maximum number of nodes in one network is limited to 127.
SA maximum of 9 RS-485 repeaters can be installed between two nodes.
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3.2 Configuring Optical Networks
Configuration Parameters for Optical Networks
When configuring optical PROFIBUS networks, the following parameters must be
taken into account:
SUsing fiber-optic cables, only point-to-point links can be established.
SThe maximum signal attenuation of the transmission path (the power budget)
must be within the permitted values.
SThe minimum or maximum permitted transmission rates of the components
(only one uniform transmission rate can be used in a network).
SThe cascading rules for the components used.
SThe maximum permitted number of nodes in the network.
SIn large-span networks, the transmission delay time.
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3.2.1 How a Fiber-Optic Cable Transmission System Works
Introduction
This section describes the structure and functions of an optical transmission
system. The information here will help you to understand the rules for calculating
the optical power budget in the next section.
Transmission Path
An optical transmission path consists of a transmitter, the optical fiber, and a
receiver.
Signal
converter E / O
converter
Electr. signal
(digital/analog) E/O = Electro-optical converter
O/E = Optoelectrical converter
Signal
converter
O / E
converter
Power supply
Electr. signal
(digital/analog)
Optical fiber
Power supply
Attenuation
transmission
path
Figure 3-2 Structure of a Link
Transmitter
The transmitter in an optical digital transmission system consists of a signal
converter that converts the digital signals from the electronics in to a pulse type
suitable for the electro-optical converter, and an electro-optical converter (E/O
converter) that converts the electric pulses to optical signals. In SIMATIC NET
PROFIBUS, LEDs (LED = Light Emitting Diode) are used as E/O converters. The
LEDs are specially adapted to the various transmission media.
Transmission Media
The transmission media used in SIMATIC NET PROFIBUS are as follows:
SPlastic fiber-optic cables
SPCF fiber-optic cables (polymer cladded fiber)
SGlass fiber-optic cables
For more detailed information about the various fiber-optic cables for SIMATIC
NET PROFIBUS, refer to Chapter 7.
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Receiver
The receiver of a digital optical transmission system consists of an optoelectric
converter (a photodiode), that converts the optical signals to electrical signals and
a signal converter that converts the electrical pulses received from the diode into
signals compatible with the connected electronics.
Attenuation
The attenuation of the transmission path is determined by the following factors:
SThe choice of optical fiber
SThe wavelength of the transmit diodes
SThe type of connector
SWith glass optical fibers, the number of splices (including repair splices)
SThe length of the optical fiber (cable length)
SThe link power margin on the link (for example for aging and temperature
dependency of the LEDs and photodiodes).
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3.2.2 Optical Power Budget of a Fiber-Optic Transmission System
Optical Power Budget
The transmitted optical power Pout and the received optical power Prec are
specified in dBm, the attenuation caused by connectors and the fiber is specified in
dB.
dBm is a reference unit and describes the logarithmic ratio of the power level to the
reference power P0=1mW. The following formula applies:
Px [in dBm] = 10*log(Px [in mW] / P0)
Examples:
Transmitter Power PxTransmitter Power as Logarithmic Power
Ratio Px to Po
10 mW + 10 dBm
1 mW 0 dBm
1 µW– 30 dBm
Transmitter
Depending on the fiber being used, the minimum and maximum optical power that
can be coupled into a fiber is specified. This power is reduced by the attenuation of
the connected transmission path resulting from the fiber itself (length, absorption,
scattering, wavelength) and the connectors used.
Receiver
The receiver is characterized by its optical sensitivity and its dynamic range. When
configuring an optical link, you should make sure that the power reaching the
receiver does not exceed its dynamic range. If the power falls below the minimum,
this increases the bit error rate (BER) due to the signal-to-noise ratio of the
receiver. If the maximum received power is exceeded, saturation and overload
effects increase pulse distortion and therefore also increase the bit error rate.
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Power Budget
The power budget of an optical link not only takes into account the attenuation in
the fiber itself, temperature and aging effects but also the attenuation values of the
connectors and splices and therefore provides exact information about whether or
not an optical link can be implemented. The starting point for calculating the
maximum transmission path length is the minimum transmitter power that can be
coupled into the fiber type. To simplify matters, the budget is calculated in dBm and
dB.
The following is subtracted from the minimum transmitter power:
SThe attenuation of the fiber aFOC [in dB/km or dB/m] (see manufacturers data)
SThe input power required at the receiver
The coupling losses at the send and receive diodes are already taken into account
in the information about the transmitter power and receiver sensitivity.
Plastic and PCF FO Cables
Plastic and PCF FO cables can only be used on short distances due to their
relatively high fiber attenuation. They are installed in one piece. Fiber-optic
connections with couplers or splices should not be considered since they further
reduce the distance that can be covered.
The maximum permitted cable lengths are listed in Tables 3-7 and 3-8.
Glass FO Cables
Glass FO cables can span distances in the kilometer range. It is often not possible
to install cables over such distances in one piece. The fiber-optic path must then
be put together in cable sections.
The couplers or splices where the sections are joined always involve certain
attenuation losses.
With transmission paths using glass fibers, the following aspects must also be
taken into account:
SThe attenuation of splices
SThe attenuation of connectors
SWhen calculating the power budget, a link power margin of at least 3 dB (at a
wavelength of 860 nm) or at least 2 dB (at a wavelength of 1300 nm) must be
maintained.
Splices
Along with the splices, future repair splices must also be taken into account.
Depending on the route of the cables and the risk of mechanical damage, one or
more future repairs (approximately 1 per 500 m) should also be included in the
budget. A repair always means two splices since a new section of cable must be
inserted (the length depending on the accuracy of the test equipment).
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Link Power Margin
When calculating the power budget, a link power margin of at least 3 dB (at a
wavelength of 860 nm) or at least 2 dB (at a wavelength of 1300 nm) must be
maintained.
If the link power margin calculated is lower, the transmission path will not be
reliable in its currently planned form. This means that the transmission path may
well function when it is first started up since components are normally better than
their rated performance (particularly when brand new) but due to aging,
replacement of components as a result of repairs and changing environmental
conditions, the bit error rate will tend to rise to an unreliable level the longer the
equipment is in use.
Note
To avoid possible errors during the installation of the transmission path, when
installing glass fibers, the installed sections must be tested during installation and
the measured values logged (see Section A-2 “Testing FO Transmission Paths”).
Work Sheet
Section 3.2.4 of this manual contains a work sheet for calculating the power budget
of glass fiber-optical links.
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3.2.3 Cable Lengths for Plastic and PCF FO Paths
The length of the transmission path on fiber-optic cables is not dependent on the
transmission rate.
Each node on the optical PROFIBUS network has repeater functionality so that the
following distance information relates to the distance between two adjacent,
interconnected PROFIBUS nodes.
The maximum cable length between two PROFIBUS nodes depends on the type
of fiber-optic cable used and the optical network components.
Table 3-7 Permitted Cable Lengths with Integrated Optical Interfaces or OBT
Fiber-optic cable
SIMATIC NET
PROFIBUS
Maximum cable
lengths between two
nodes (in m)
For 1 Network (= 32
nodes) (in m)
Plastic fiber-optic,
duplex cord 50 1550
Plastic fiber-optic,
standard cable 50 1550
PCF fiber-optic,
standard cable 300 9300
Table 3-8 Permitted Cable Lengths in an OLM Network
Fiber-optic cable
SIMATIC NET
PROFIBUS
Maximum cable
lengths between two
nodes (in m)
For 1 Network (= 32
nodes) (in m)
Plastic fiber-optic,
duplex cord 50 1550
Plastic fiber-optic,
standard cable 80 2480
PCF fiber-optic,
standard cable 400 12400
Note
SOptical buses can contain max. 32 integrated optical interfaces in series.
SSeveral buses of up to 32 integrated optical interfaces can only be linked
via OBTs (optical repeaters).
SIn optical networks (bus, star, ring) containing only OLMs, the number of
OLMs is limited to 122.
SThe number of all optical components (integrated interfaces, OBTs,
OLMs) in the optical PROFIBUS network must be specified in the
configuration tool as the “Number of OLM, OBT” parameter (see Section
3.3). This number must not exceed 122.
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Mixing Plastic Fiber-Optic and PCF Fiber-Optic
To make the best use of the different cable lengths, the plastic fiber-optic cables
and PCF fiber-optic cables can be mixed.
For example, connection between distributed local DP slaves using plastic
fiber-optic (distances t 50 m) and connection between DP master to the first DP
slave of the bus topology with PCF fiber-optic (distance u 50 m).
3.2.4 Calculating the Power Budget of Glass Fiber Optical Links with
OLMs
Calculation Examples
The following work sheets show typical calculations of the power budget for
SIMATIC NET PROFIBUS glass optical fibers, one with OLM/G11, OLM/G12 at a
wavelength of 860 nm and one with OLM/G11-1300 and OLM/G12-1300 at a
wavelength of 1300 nm.
Note
Please note that the information on fiber attenuation in the data sheets and type
specifications of fiber-optic cables are based on measurements with narrow-band
laser light sources exactly adapted to the wavelengths.
The LED transmission elements used in practice produce a wider band spectrum
whose mid frequency deviates slightly from the measured wavelength.
You should therefore use the following attenuation values on all connections with
SIMATIC NET multimode glass fiber-optic cable between SIMATIC NET
PROFIBUS components:
3.5 dB/km at 860 nm
1.0 dB/km at 1310 nm
Note
The following distances between two OLMs must not be exceeded regardless of the
optical power budget:
OLM/P11, OLM/P12 400 m
OLM/G11, OLM/G12, OLM/G12-EEC 3 km
OLM/G11-1300, OLM/G12-1300 15 km
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Power budget for OLM/G11, G12 for a point-to-point link with the wavelength
λ = 860 nm
Attenuation on the cable
Fiber type Attenuation
aFOC Cable length L
62.5/125 µm3.5 dB/km 2.85 km L* aFOC = 10.0 dB
+
Attenuation for connectors
aConn Number +
0.4 dB 1 Number *
aConn 0.4 dB
Attenuation caused by splices +
aSpl Number
0.2 dB 3 Number * aSpl 0.6 dB
Attenuation of the transmission path aPath = 11.0 dB
Characteristic data of the OLM/G11, G12
maximum power coupled into 62.5/125 µm fiber
Pout, min
–13 dBm
Receiver sensitivity
Prec, min
–28 dBm
Maximum permitted attenuation amax = Pout, min – Prec, min = 15.0 dB
Link power margin amax – aPath = 4.0 dB
The transmission path can be implemented as planned.
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Power Budget for OLM G11-1300, G12-1300 for One Point-to-Point
Link at Wavelength λ = 1310 nm
Attenuation on the cable
Fiber type Attenuation
aFOC Cable length
L
62.5/125 µm1.0 dB/km 9 km L* aFOC = 9.0 dB
+
Attenuation for connectors
aConn Number +
1 dB 0 Number *
aConn 0 dB
Attenuation caused by splices +
aSpl Number
0.2 dB 5 Number * aSpl 1.0 dB
Attenuation of the transmission path aPath = 10.0 dB
Data of the OLM/G11-1300, G12-1300 power that
can be coupled into 62.5/125 µm fibers
Pout, min
–17 dBm
Receiver sensitivity
Prec, min
–29 dBm
Maximum permitted attenuation amax = Pout, min – Prec, min = 12 dB
Link power margin amax – aPath = 2 dB
The transmission path can be implemented as planned.
Note
The maximum length of fiber-optic cable that can be supplied in one piece depends on the
cable type but is approximately 3 km per drum. Longer links must therefore be put together
using more than one piece of cable. To connect the sections of cable, coupling elements or
splices must be used reducing the maximum possible cable length due to their attenuation.
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Blank form for a power budget using OLMs
Attenuation for the OLM/G11, G12, G11-1300 or G12-1300 for one point-to-point link with wavelength λ
=
Attenuation on the cable
Fiber type
( µm ) Attenuation
aFOC in dB/km Cable length L
in km
L* aFOC = dB
Attenuation of connectors
aConn (dB) Number +
Number *
aConn dB
Attenuation caused by splices
aSpl (dB) Number
Number * a Spl dB
Attenuation of the transmission path aPath =dB
Power that can be coupled
into µm fiber
Pout, min (dBm)
Receiver sensitivity
Prec, min
(dBm)
Maximum permitted attenuation amax = Pout, min – Prec, min = dB
Link power margin amax – aPath = dB
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3.3 Transmission Delay Time
The system reaction time of a PROFIBUS network depends largely on the
following:
SThe type of system being used (single or multiple master system)
SThe maximum reaction time of the individual nodes
SThe amount of data to be transmitted
SThe bus configuration (topology, cable lengths, active network components)
The bus parameters are adapted (configured) to the particular PROFIBUS network
using configuration software such as COM PROFIBUS or STEP 7.
Using optical link modules, extremely large PROFIBUS networks can be created.
These allow the use of long optical fiber links and the cascading of large numbers
of components. Each time the data packet passes through an OLM there is a
delay.
Due to the delays caused by cables and network components and the monitoring
mechanisms in the network components, the PROFIBUS network parameter “Slot
Time” must be adapted to the network span, the network topology and the
transmission rate.
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3.3.1 Configuring Optical Buses and
Star Topologies with OLMs
Creating a System Overview
You configure the PROFIBUS network, for example with SIMATIC STEP 7. The
bus-specific configuration begins with the creation of the system overview in the
hardware configuration dialog “HW Config” of STEP 7 (V5.0).
Figure 3-3 “HW Config” Dialog in STEP 7 (V5.0)
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Setting the PROFIBUS Properties
In the “Properties – PROFIBUS” dialog, you can set the highest station address
(HSA), the transmission rate and the bus profile.
Figure 3-4 ”Properties – PROFIBUS” Dialog
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Entering the Cabling Configuration
You can make the settings for the cabling configuration (number of OLMs, cable
length) in the “Cables” tab under “Options”.
Figure 3-5 “Options” –> “Cables” Tab
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Checking the Bus Parameters
Based on the entries made, the configuration tool can check whether the slot time
is feasible in the selected communication profile. If the system would exceed the
value, due to the additional delays of OLM and FO cables, the parameters are
adapted. The newly calculated bus parameters are displayed in the “Bus
Parameters” dialog.
Figure 3-6 Bus Parameters Adapted to the System
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3.3.2 Configuring Redundant Optical Rings with OLMs
The following configuration conditions must be satisfied in redundant optical rings:
1. Configuration of a Non-Existent Node
2. Raising the retry value to at least the value 3
3. Checking and adaptation of the slot time
To set the parameters under point 2. and 3., use the user-specific profile of the
configuration tool. There is an example of adopting the bus parameters in STEP 7
at the end of this section.
Configuration of a Non-existent Node
The value of the HSA (Highest Station Address) parameter must be set on all
DTEs so that there is at least one address in the network between bus address 0
and the value of HSA that is not used by a node; in other words, there is an
address gap. You can obtain this address gap simply by increasing the value of the
HSA parameter by one higher than the highest node address in the network.
Note
If this condition is not or is no longer satisfied, the optical bus will no longer close
to form redundant optical ring following segmentation. The fault message (LED
and signaling contact) of the two OLMs affected is not canceled even after the
fault has been eliminated.
Raising the Retry Value to at Least the Value 3
If a fault occurs requiring a switchover to the redundant system (for example wire
break), there is a switching time during which correct data transmission is not
possible. To ensure a “bumpless” switchover for the application, it is advisable to
set the number of frame retries on the PROFIBUS master to at least 3.
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Checking and Adapting the Slot Time
To allow a “bumpless” return from the optical bus to the optical ring after the fault
has been eliminated, there must be no frame on the network at the switch-back
time. The network is briefly free of frames when a master addresses a device
whose address is configured but does not actually exist.
The master waits for a response until the configured slot time has elapsed. The
OLM recognizes this frame–free state and closes the optical bus in the middle of
this query sequence to form the optical ring again.
The slot time must be set to approximately twice the value you would use in a
non-redundant network.
Calculate the slot time according to the following formula:
Slot time = a + (b x length FOC) + (c x numberOLM)
Slot time is the monitoring time in bit times
Length FOC is the sum of all FO cables (segment lengths) in the network.
The lengths must be specified in km.
Number OLM is the number of PROFIBUS OLMs in the network
The factors a, b and c depend on the transmission rate and can be found in Tables
3–9 and 3–10.
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Table 3-9 Constants for Calculating the
Slot Time with DP Standard
(redundant optical ring)
Transmission
rate a b c
12 Mbps 1651 240 28
6 Mbps 951 120 24
3 Mbps 551 60 24
1.5 Mbps 351 30 24
500 Kbps 251 10 24
187.5 Kbps 171 3.75 24
93.75 Kbps 171 1.875 24
45.45 Kbps 851 0.909 24
19.2 Kbps 171 0.384 24
9.6 Kbps 171 0.192 24
Table 3-10 Constants for Calculating the
Slot Time with DP/FMS (”Universal”) and DP
with S5–95U (redundant optical ring)
Transmission
rate a b c
12 Mbps 1651 240 28
6 Mbps 951 120 24
3 Mbps 551 60 24
1.5 Mbps 2011 30 24
500 Kbps 771 10 24
187.5 Kbps 771 3.75 24
93.75 Kbps 451 1.875 24
45.45 Kbps 851 0.909 24
19.2 Kbps 181 0.384 24
9.6 Kbps 171 0.192 24
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Note
The slot time calculation takes into account only the optical network and the
attachment of nodes to the OLM in each case via a maximum 20 m long RS-485
bus segment. Longer RS-485 bus segments must be included by adding them to
the length FOC.
With the OLM/G11-1300 and OLM/G12-1300, the minimum slot times shown in the
following table must be maintained at transmission rates of 12 Mbps, 6 Mbps, 3
Mbps and 1.5 Mbps.
Table 3-11 Minimum Slot Time for
OLM/G11-1300 and OLM/G12-1300
Transmission rate Minimum slot
time
12 Mbps 3800 tBit
6 Mbps 2000 tBit
3 Mbps 1000 tBit
1.5 Mbps 530 tBit
When configuring the slot time, use the minimum slot time as shown in Table 3-11
if the calculated slot time is less than the minimum slot time.
Note
If the slot time is configured with a value that is too low, this can lead to
malfunctions and error displays on the OLM. The system LED flashes red/green.
3.3.3 Example of Configuring the Bus Parameters in STEP 7
Structure of the Network Example
The example assumes a redundant optical ring with the following structure:
S20 OLM G12 modules in the redundant optical ring
S20 km total ring length
STransmission Rate 1.5 Mbps
SNodes attached directly to OLMs
S“PROFIBUS-DP” bus protocol
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Calculation of the Slot Time
For the transmission rates of 1.5 Mbps selected in the example, Table 3-9 lists the
following valuesa = 351
b = 30
c = 24
On this basis, the slot time is calculated as follows:
Slot time = 351 + (30 x 20) + (24 x 20) = 1431
Entering the Bus Parameters
This means that the following three bus parameters must be entered for the
example:
Slot time (T_slot_Init) = 1431
Retries (Retry_Limit) = 3
Highest station address (HSA) = 126 (default)
These values are entered in STEP 7 in the “Bus Parameters” dialog for the
“User-Defined” bus profile.
You must then trigger the recalculation of the bus parameters with the
“Recalculate” button.
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Note
Since the formula includes the delays of all fiber-optic and RS-485 cables, the
“Consider Cable Configuration” check box must not be activated in the “Cables”
tab on the “Options” dialog.
Figure 3-7 “Bus Parameters/User-Defined” Dialog in STEP 7 (V5.0)
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Passive Components for RS-485 Networks 4
Passive Components for RS-485 Networks
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4.1 SIMATIC NET PROFIBUS Cables
PROFIBUS Cables
A variety of SIMATIC NET PROFIBUS cables are available allowing optimum
adaptation to a variety of environments.
All the information about segment lengths and transmission rates refer only to
these cables and can only be guaranteed for these cables.
Notes on Installing RS-485 LAN Cables
LAN cables are impaired by mechanical damage. How to install LAN cables
correctly is described in detail in Appendix C.
To make it easier to measure the length of cables, they have a marker every
meter.
Overview
Table 4-1 is an overview of the LAN cables for PROFIBUS showing their
mechanical and electrical characteristics.
If you require a cable with characteristics that are not covered by the range of
products described here, please contact your local SIEMENS office or
representative (see Appendix I.2).
Passive Components for RS-485 Networks
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Table 4-1 LAN Cables for PROFIBUS (1)
Technical Specifications 1)
Cable Type FC Standard
Cable FC FRNC
Cable FC Food
Cable FC Robust
Cable FC Under-
ground Cable
Order Number 6XV1 830
-0EH10 6XV1 830
-0LH10 6XV1 830
-0GH10 6XV1 830
-0JH10 6XV1 830
-3FH10
Attenuation
at 16 MHz
at 4 MHz
at 38.4 kHz
at 9.6 kHz
< 42 dB/km
< 22 dB/km
< 4 dB/km
<2.5 dB/km
< 42 dB/km
< 22 dB/km
< 4 dB/km
<2.5 dB/km
< 42 dB/km
< 22 dB/km
< 4 dB/km
<2.5 dB/km
< 42 dB/km
< 22 dB/km
< 4 dB/km
<2.5 dB/km
< 42 dB/km
< 22 dB/km
< 4 dB/km
<2.5 dB/km
Characteristic impedance
at 9.6 kHz
at 31.25 kHz
at 38.4 kHz
at 3 to 20 MHz
Rated value
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
d.c. loop resistance ≤ 110 Ω /km ≤ 110 Ω /km ≤ 110 Ω /km ≤ 110 Ω /km ≤ 110 Ω /km
Shield resistance ≤ 9.5 Ω /km ≤ 9.5 Ω /km ≤ 9.5 Ω /km ≤ 9.5 Ω /km ≤ 9.5 Ω /km
Effective capacitance at
1 kHz approx. 28.5
nF/km approx. 28.5
nF/km approx. 28.5
nF/km approx. 28.5
nF/km approx. 28.5
nF/km
Operating voltage
(effective) ≤ 100 V ≤ 100 V ≤ 100 V ≤ 100 V ≤ 100 V
Cable type
standard code 02YY(ST)CY
1x2x0.64/2.55-
150 KF 40
FRNC VI
02YSH(ST)CH
1x2x0.64/2.55-
150 VI KF25
FRNC
02YSY(ST)C2
Y
1x2x0.64/2.55-
150 KF40
02YSY(ST)C11
Y
1x2x0.64/2.5-
150 KF40
FRNC VI
02YSY(ST)
CY2Y
1x2x0.64/2.5-
150 KF 40 SW
Sheath
Material
Color
Diameter
PVC
violet
8.0 ± 0.4 mm
FRNC
light violet
8.0 ± 0.4 mm
PE
black
8.0 ± 0.4 mm
PUR
violet
8.0 ± 0.4 mm
PE/PVC
black
10.8 ± 0.5 mm
3)
Permitted ambient conditions
– Operating temperature
– Transport/storage
temperature
– Installation temperature
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
-25°C + 60°C
-25°C + 60°C
-25°C + 60°C
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
-40°C + 60°C
Bending radii
One-time bending
Repeated bending ≥ 75 mm
≥ 150 mm ≥ 75 mm
≥ 150 mm ≥ 75 mm
≥ 150 mm ≥ 75 mm
≥ 150 mm ≥ 80 mm
≥ 150 mm
Max. tensile load 100 N 100 N 100 N 100 N 100 N
W eight approx. 76 kg/km 67 kg/km 67 kg/km 73 kg/km 117 kg/km
Halogen free no yes no no no
Behavior in fire flame-retardant
according to
VDE 0472
T804
test type C
flame-retardant
according to
VDE 0472
T804
test type C
flammable flame-retardant
according to
VDE 0472
T804
test type B
flammable
Oil resistance Conditionally
resistant to mi-
neral oil and
greases
Conditionally
resistant to mi-
neral oil and
greases
Conditionally
resistant to mi-
neral oil and
greases
good resi-
stance to mine-
ral oil and
greases
Conditionally
resistant to mi-
neral oil and
greases
Passive Components for RS-485 Networks
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UV resistance no no yes yes yes
UL listed yes no no yes no
1) Electrical characteristics at 20 °C, tested in compliance with DIN 47250 Part 4 or DIN VDE 0472
2) Cables capable of trailing for the following requirements:
- min. 4 million bending cycles at the specified bending radius and max. acceleration of 4 m/s2
3) Outer diameter > 8 mm; bus connectors can only be attached after removing the outer sheath
4) Not suitable for fitting in a bus connector with insulation displacement system (6ES7 972-0BA30-0XA0)
5) At 800 Hz
6) Unrestricted segment lengths
7) Transmission rate 31.25 Kbps
8) Cable suitable for applications involving torsion: min. 5 million torsion movements on 1 m
cable length (+/-180o)
Passive Components for RS-485 Networks
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Table 4-2 LAN Cables for PROFIBUS (2)
Technical Specifications 1)
Cable Type FC Trailing
Cable 6) 4) Festoon
Cable 6) 4) Flexible Cable
6) 4) FC Process
Cable for IEC
61158-2 7)
SIENOPYR FR
Marine Cable
Order Number 6XV1 830
-3EH10 6XV1 830
-3GH10 6XV1 830
-0FH10 6XV1 830
-5EH10,
-5FH10
6XV1830
–0MH10
Attenuation
at 16 MHz
at 4 MHz
at 38.4 kHz
at 9.6 kHz
< 49 dB/km
< 25 dB/km
< 4 dB/km
< 3 dB/km
< 49 dB/km
< 25 dB/km
< 4 dB/km
< 3 dB/km
< 49 dB/km
< 25 dB/km
< 4 dB/km
< 3 dB/km <= 3 dB/km
< 45 dB/km
< 22 dB/km
< 5 dB/km
< 3 dB/km
Characteristic impedance
at 9.6 kHz
at 31.25 kHz
at 38.4 kHz
at 3 to 20 MHz
Rated value
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
270 ± 27 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
100 ± 20 Ω
100 Ω
250 ± 25 Ω
-
185 ± 18.5 Ω
150 ± 15 Ω
150 Ω
d.c. loop resistance ≤ 133 Ω /km ≤ 133 Ω /km ≤ 133 Ω /km ≤ 44 Ω /km ≤ 110 Ω /km
Shield resistance ≤ 14 Ω /km ≤ 19 Ω /km ≤ 14 Ω /km - -
Effective capacitance at
1 kHz approx. 28.5
nF/km approx. 28.5
nF/km approx. 28 nF/
km -approx. 30 nF/
km 5)
Operating voltage
(effective) ≤ 100 V ≤ 100 V ≤ 100 V ≤ 100 V ≤ 100 V
Cable type
standard code 02YY(ST)C11Y
1x2x0.64/2.55-
150 KF LI 40
FR petrol
02Y(ST)CY
1x2x0.65/2.56-
150 LI petrolFR
02Y(ST)C11Y
1x2x0.65/2.56-
150 LI VI
FRNC
02Y SY (ST)
CY
1x2x1.0/2.55-
100 BL OE FR
M-02Y(ST)CH
X
1x2x0.35
100V
Sheath
Material
Color
Diameter
PUR
petrol
8.0 ± 0.4 mm
Special PVC
petrol
8.0 ± 0.3 mm
PUR
violet
8.0 ± 0.4 mm
PVC
blue / black
8.0 ± 0.4 mm
Polymer 3)
black
10.3 ± 0.5 mm
Permitted ambient conditions
– Operating temperature
– Transport/storage
temperature
– Installation temperature
-40°C + 60 °C
-40°C + 60 °C
-40°C + 60°C
-40°C + 60 °C
-40°C + 60 °C
-40°C + 60°C
-40 °C + 60 °C
-40 °C + 60 °C
-40 °C + 60°C
-20°C + 60 °C
-20°C + 60 °C
-20°C + 60°C
-40°C + 80 °C
-40°C + 80 °C
-10°C + 50°C
Bending radii
One-time bending
Repeated bending ≥ 40 mm
≥ 60 mm 2) ≥ 30 mm
≥ 70 mm 2)≥ 60 mm
≥ 120 mm 8) ≥ 60 mm
≥ 160 mm ≥ 108 mm
≥ 216 mm
Max. tensile load 100 N 80 N 100 N 150 N 100 N
W eight approx. 74 kg/km 56 kg/km 67 kg/km 103 kg/km 109 kg/km
Halogen free no no yes no yes
Behavior in fire flame-retardant
according to
VDE 0472
T804
test type B
flame-retardant
according to
VDE 0472
T804
test type B
flame-retardant
according to
VDE 0472
T804
test type B
flame-retardant
according to
VDE 0472
T804
test type B
flame-retardant
according to
VDE 0472
T804
test type C
Oil resistance good resi-
stance to mine-
ral oil and
greases
conditionally
resistant to mi-
neral oil and
greases
good resi-
stance to mine-
ral oil and
greases
good resi-
stance to mine-
ral oil and
greases
very good resi-
stance to mine-
ral oil and
greases
UV resistance yes yes yes yes yes
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UL listed yes yes yes yes no
1) Electrical characteristics at 20 °C, tested in compliance with DIN 47250 Part 4 or DIN VDE 0472
2) Cables capable of trailing for the following requirements:
- min. 4 million bending cycles at the specified bending radius and max. acceleration of 4 m/s2
3) Outer diameter > 8 mm; bus connectors can only be attached after removing the outer sheath
4) Not suitable for fitting in a bus connector (6ES7 972-0BA30-0XA0)
5) At 800 Hz
6) Unrestricted segment lengths
7) Transmission rate 31.25 Kbps, cable corresponds to FISCO model
8) Cable suitable for applications involving torsion: min. 5 million torsion movements on 1 m
cable length (+/-180o)
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4.1.1 FC Standard Cable
Cores, solid copper
Filler
PVC outer sheath
Copper braid shield
Aluminum foil
Cellular PE insulation
Plastic foil
Figure 4-1 Structure of the FC Standard Cable
FC Standard Cable 6XV1 830-0EH10
The LAN cable with the order number 6XV1 830-0EH10 is the FastConnect
standard LAN cable for SIMATIC NET PROFIBUS networks. It meets the
requirements of EN 50170, cable type A, with solid copper cores (22 gauge).
The combination of twisted wires, foil shield and braid shield make the cable
particularly suitable for industrial environments subject to electromagnetic
interference. The design of the cable also guarantees stable electrical and
mechanical data after the cable has been installed.
The FastConnect LAN cable 6XV1 830-0EH10 is UL listed.
The structure of the cable allows the use of the FastConnect (FC) stripping tool for
fast stripping of the cable (see Section 4.2.3).
Properties
Due to the composition of the sheath material, the LAN cable has the following
characteristics:
SFlame-retardant
SSelf-extinguishing in case of fire
SConditionally resistant to mineral oil and greases
SSheath material not free of halogens
Uses
The LAN cable is intended for fixed installation in buildings (in-house cabling).
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4.1.2 FC-FRNC Cable (LAN cable with halogen-free outer sheath)
Cores, solid copper
FRNC outer sheath
Copper braid shield
Aluminum foil
Cellular PE insulation
Figure 4-2 Structure of the FRNC LAN Cable (Halogen-Free Outer Sheath)
LAN Cable with Halogen-free Outer Sheath 6XV1 830-0LH10
The LAN cable with a halogen-free outer sheath 6XV1 830-0LH10 complies with
the specification EN 50170, cable type A, with solid copper cores (22 gauge).
The structure of the cable allows the use of the FastConnect (FC) stripping tool for
fast stripping of the PROFIBUS cable (see Section 4.2.3).
Properties
The characteristics of the sheath material differ from those of the standard LAN
cable as follows:
SThe material is free of halogens
SNot resistant to UV radiation
SThe sheath material is flame resistant
Uses
The FRNC cable is particularly suitable for use inside buildings.
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4.1.3 FC Food Cable
Cores, solid copper
Filler
PE outer sheath
Copper braid shield
Aluminum foil
Cellular PE insulation
Plastic foil
Figure 4-3 Structure of the FC Food Cable
FC Food Cable 6XV1 830-0GH10
The FC food cable 6XV1 830-0GH10 complies with the specification EN 50170,
cable type A, with solid copper cores (22 gauge). The inner structure of the cable
(cores, filler, shielding) is identical to that of the standard cable.
The structure of the cable allows the use of the FastConnect (FC) stripping tool for
fast stripping of the PROFIBUS cable (see Section 4.2.3).
Properties
The characteristics of the polyethylene (PE) sheath differ from those of the
standard LAN cable as follows:
SImproved resistance to abrasion
SImproved resistance to oil and lubricants
SResistant to UV radiation
SResistant to water and steam
SThe sheath material is flammable
Uses
The food cable with its PE sheath is particularly suited for use in the food,
beverages and tobacco industry. It is designed for fixed installation within buildings
(in-house cabling).
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4.1.4 FC Robust Cable
Cores, solid copper
Filler
PUR outer sheath
Copper braid shield
Aluminum foil
Cellular PE insulation Plastic foil
Figure 4-4 Structure of the FC Robust Cable
FC Robust Cable 6XV1 830-0JH10
The FC robust cable 6XV1 830-0JH10 with its PUR sheath complies with the
specification EN 50170, cable type A, with solid copper cores (22 gauge). The
inner structure of the cable (cores, filler, shielding) is identical to that of the
standard cable.
The structure of the cable allows the use of the FastConnect (FC) stripping tool for
fast stripping of the cable (see Section 4.2.3).
Properties
The characteristics of the PUR sheath material differ from those of the standard
LAN cable as follows:
SImproved resistance to abrasion
SImproved resistance to oil and lubricants
SResistant to UV radiation
SThe sheath material is flame resistant
Uses
The FC robust cable with its PUR sheath is particularly suitable for use in areas
where it is exposed to chemicals and mechanical strain. It is designed for fixed
installation within buildings (in-house cabling).
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4.1.5 PROFIBUS Flexible Cable
Filler
(polyester yarn)
Cores, stranded copper
Cellular PE insulation
PUR outer sheath
Plastic foil
Copper braid shield
Conductive fleece
layer
Figure 4-5 Structure of the Flexible Cable (Robot Cable)
PROFIBUS flexible cable 6XV1 830-0FH10
The flexible cable 6XV1 830-0FH10 complies with the specification EN 50170,
Cable Type A, with stranded copper cores (approximately 24 gauge - 19/36) apart
from the higher loop resistance.
This difference means a reduced segment length; refer to the table in Chapter 3
“Notes on Configuration”.
In contrast to the standard LAN cable, the cores of the flexible cable are of
stranded copper. In conjunction with the special combination of braid shield, foil
shield, fleece layer and the sheath material of polyurethane, the cable has a
torsional strength of ±180o while retaining highly constant electrical characteristics.
The cable has been tested to a minimum of 5 million torsional movements on one
meter cable length (±180o).
If screw terminals are used, the stranded cores must be fitted with wire-end
ferrules (0.25 mm2 complying with DIN 46228).
The bus connector 6ES7 972-0BA30-0XA0 cannot be connected.
The cable is not suitable for use of the FastConnect (FC) stripping tool.
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Properties
The characteristics of the flexible cable differ from those of the standard LAN cable
as follows:
SThe sheath material is free of halogens (polyurethane, PUR)
SExtremely good resistance to abrasion
SResistant to mineral oils and grease
SExtremely good resistance to UV radiation
SSmall bending radii for installation and operation
SDue to the smaller Cu cross-section, the d.c. loop resistance and the HF
attenuation are higher which means reduced segment lengths.
SThe sheath material is flame resistant
Uses
The flexible cable is designed for torsion of ±180o and is therefore particularly
suitable for networking moving plant parts, for example robots.
Note
If you connect to screw terminals, the stranded cores must be fitted with wire-end
ferrules (0.25 mm2 complying with DIN 46228). Use only wire-end ferrules made of
materials with permanently stable contact properties, for example copper with a
tin-plated surface (not aluminum).
The bus connector 6ES7 972-0BA30-0XA0 cannot be connected to the stranded
cores.
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4.1.6 FC Underground Cable
Cores, solid copper
PE outer sheath
PVC inner sheath
Copper braid shield
Aluminum foil
Cellular PE insulation
Filler
Plastic foil
Figure 4-6 Structure of the Underground Cable
FC Underground Cable 6GK1 830-3FH10
The FC underground cable 6GK1 830-3FH10 meets the requirements of EN
50170, cable type A, with solid copper cores (22 gauge). The internal structure of
the cable corresponds to that of the standard LAN cable, the electrical
characteristics are identical. The cable has an additional PE outer sheath. The
outer and inner sheath are bonded together so that the FC underground cable can
be fitted with all SIMATIC NET PROFIBUS connectors after removing the outer
sheath.
After removing the outer sheath, the structure of the cable also allows use of the
FastConnect (FC) stripping tool for fast stripping of the inner cable (see Section
4.2.3).
Properties
The characteristics of the underground cable differ from those of the standard LAN
cable as follows:
SImproved resistance to abrasion
SImproved resistance to oil and grease complying with VDE 0472, Part 803, Test
Type B
SResistant to UV radiation
SLarger outer diameter and heavier
SThe sheath material is flammable
SResistant to water and steam
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Uses
Due to its additional PE outer sheath, this cable is suitable for underground cabling
(campus cabling).
4.1.7 FC Trailing Cable
Filler
Cores, stranded copper
Cellular PE insulation
PUR outer sheath
Copper braid shield
Aluminum foil
Plastic foil
Figure 4-7 Structure of the Trailing Cable
Trailing Cable 6XV1 830-3EH10
The trailing cable 6XV1 830-3EH10 corresponds to the specification EN 50170
Cable Type A, with stranded copper cores (approximately 24 gauge - 19/36) with
the exception of the higher loop resistance.
This difference means a reduced segment length; refer to the tables in Chapter 3
“Notes on Configuration”.
In contrast to the standard LAN cable, the cores of the trailing cable are of
stranded copper. In conjunction with the special combination of braid shield, foil
shield, and the sheath material of polyurethane, the cable is extremely flexible
while retaining highly constant electrical characteristics.
If you connect to screw terminals, the stranded cores must be fitted with wire-end
ferrules (0.25 mm2 complying with DIN 46228).
The bus connector 6ES7 972-0BA30-0XA0 cannot be connected.
To help to avoid twisting the cable during installation, the outer sheath has a line
printed along its full length.
The structure of the cable allows the use of the FastConnect (FC) stripping tool for
fast stripping of the outer sheath (see Section 4.2.3).
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Properties
The characteristics of the trailing cable differ from those of the standard LAN cable
as follows:
SExtremely good resistance to abrasion
SResistant to mineral oils and grease
SExtremely good resistance to UV radiation
SSmall bending radii for installation and operation
SDue to the smaller Cu cross-section, the d.c. loop resistance and the HF
attenuation are higher which means reduced segment lengths.
SThe sheath material is flame resistant
Uses
The trailing cable is designed for a minimum of 4 million bending cycles at the
specified bending radius and a maximum acceleration of 4 m/s2 and is therefore
particularly suitable for installation in drag chains.
Note
During installation and operation, all the mechanical restrictions involving the cable
such as bending radii, tensile load etc. must be adhered to.
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Figure 4-8 Example of Using the PROFIBUS Trailing Cable in a Drag Chain
Segment Lengths
Due to the increased loop resistance, somewhat shorter segment lengths are
permitted at low transmission rates (see Table 3.1). At transmission rates ≥ 500
Kbps, the trailing cable has the same values as the standard LAN cable.
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Note
If you connect to screw terminals, the stranded cores must be fitted with wire-end
ferrules (0.25 mm2 complying with DIN 46228). Use only wire-end ferrules made of
materials with permanently stable contact properties, for example copper with a
tin-plated surface (not aluminum).
The bus connector 6ES7 972-0BA30-0XA0 cannot be connected to the stranded
cores.
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4.1.8 PROFIBUS Festoon Cable
Fillers
Cores, stranded copper
Cellular PE insulation
Outer sheath of
special PVC
Plastic foil
Copper braid shield
Aluminum foil
Plastic foil
Figure 4-9 Structure of the Festoon Cable
Festoon Cable 6XV1 830-3GH10
The festoon cable 6XV1 830-3GH10 complies with the specification EN 50170,
cable type A, with stranded copper cores (approximately 24 gauge - 19/36) apart
from the higher loop resistance.
This difference means a reduced segment length; refer to the table in Chapter 3
“Notes on Configuration”.
With its flexible structure, the festoon cable 6XV1830-3GH10 can be used in
festoons with large and small cable loops. The cable carries its own weight but is
not suitable for tensile stress > 80 N.
The outer sheath has the identification “SIMATIC NET PROFIBUS RS-485
Festoon Cable 6XV1830-3GH10 * (UL) CMX 75 °C (SHIELDED) AWG 24” printed
on it along with meter markings.
To help to avoid twisting the cable during installation, the outer sheath has a line
printed along its full length.
If screw terminals are used, the stranded cores must be fitted with wire-end
ferrules (0.25 mm2 complying with DIN 46228).
The bus connector 6ES7 972-0BA30-0XA0 cannot be connected.
The cable is not suitable for use of the FastConnect (FC) stripping tool.
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Properties
The festoon cable has the following properties:
SThe outer sheath contains halogens (PVC)
SConditionally resistant to mineral oil and greases
SResistant to UV radiation
SSmall bending radii both during installation and operation
SDue to the smaller Cu cross-section of the inner conductors, the d.c. loop
resistance and the HF attenuation are somewhat higher which means reduced
segment lengths.
SThe sheath material is flame-retardant complying with VDE 0472 T804
test type B.
Uses
The LAN cable for festoons is designed for at least 5 million bending cycles at the
specified bending radius and at a maximum acceleration of 4 m/s2.
Note
During installation and operation, all the mechanical restrictions involving the cable
such as bending radii, tensile load etc. must be adhered to.
Stopper
Clip
Runner
Lead runner
Example of installation:
Kink protection
Pulling cord
to provide strain relief for the cable
Figure 4-10 Installation of the PROFIBUS Festoon Cable (Schematic)
Segment Lengths
Due to the increased loop resistance, somewhat shorter segment lengths are
permitted at low transmission rates (see Table 3.1). At transmission rates ≥ 500
Kbps, the trailing cable has the same values as the standard LAN cable.
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Note
If you connect to screw terminals, the stranded cores must be fitted with wire-end
ferrules (0.25 mm2 complying with DIN 46228). Use only wire-end ferrules made of
materials with permanently stable contact properties, for example copper with a
tin-plated surface (not aluminum).
The bus connector 6ES7 972-0BA30-0XA0 cannot be connected to the stranded
cores.
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Installation Guidelines
When it is installed, the cable must be unwound at a tangent from the drum and
with no torsion (keep watching the line down the length of the cable) and installed
in the cable carriage.
The cable must be installed in a flat cable carriage on a round support to avoid
kinking. The radius of the round support must be greater than 70 mm.
The strain relief mechanisms on the cable carriage must have rubber clamps to
avoid crimping the cable.
Other cables installed in the festoon must not cause bends tighter than the
minimum bending radius of the trailing cable.
Figure 4-11 Use of the PROFIBUS Cable for Festoons
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4.1.9 SIENOPYR-FR Marine Cable
Cores, stranded copper
Outer sheath of
halogen-free polymer
Inner sheath of
halogen-free
polymer
Copper braid shield
Aluminum foil
Cellular PE
insulation
Dummy cores
Figure 4-12 Structure of the SIENOPYR-FR Marine Cable
SIENOPYR-FR Marine Cable 6XV1830-0MH10
The SIENOPYR-FR marine cable meets the requirements of EN 50170, cable type
A. The inner conductor consists of 7-strand copper (approximately 22 gauge). The
outer sheath of cross-linked, halogen-free polymer is extremely resistant to
lubricants and fuels, hydraulic fluid, cold cleansing agents and deionized water.
The outer sheath of the SIENOPYR-FR marine cable can be removed separately
so that the inner sheath can be fitted into all PROFIBUS connectors with an 8 mm
cable inlet.
The cable is not suitable for use of the FastConnect (FC) stripping tool.
Properties
The SIENOPYR-FR marine cable has the following properties:
SHalogen-free
SResistant to diesel fuel, ASTM oil, hydraulic fluid, cold cleansing agents,
deionized water complying with VG 95 218 Part 2
SResistance to ozone complying with DIN VDE 0472 Part 805, test type B
SBurning behavior complying with DIN VDE 0472 Part 804, test type C
SCorrosivity of combustion gases complying with DIN VDE 0472 Part 813
(corresponds to IEC 60754-2)
SShip-building approvals (Germanischer Lloyd, Lloyd’s Register, Registro Italiano
Navale)
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Uses
The SIENOPYR-FR marine cable is intended for fixed installation on ships and
offshore facilities in all rooms and on open decks.
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4.2 FastConnect Bus Connector
Uses
Using the bus connector for SIMATIC NET PROFIBUS:
SNodes with an electrical 9-pin sub-D interface complying with EN 50170 can be
connected directly to the SIMATIC NET PROFIBUS cables
SElectrical segments or individual nodes can be connected to the optical link
module (OLM, OBT).
SNodes or programming devices can be connected to a repeater.
Note
The integrated bus terminators and the mechanical specifications of the SIMATIC
NET bus connectors are tailored to the SIMATIC NET PROFIBUS cables (cable
type A of the PROFIBUS standard EN 50170-1-2). Fitting bus connectors to
cables with different electrical or mechanical properties can cause problems during
operation!
4.2.1 The FastConnect System
Uses
PROFIBUS FastConnect is a system for fast simple assembly of PROFIBUS
copper cables.
Design
The system consists of three components:
SFastConnect LAN cables for fast installation
SFastConnect stripping tool
SFastConnect bus connectors for PROFIBUS
(with insulation displacement system)
Note
All PROFIBUS FastConnect LAN cables can also be fitted into the normal bus
connectors with screw terminals.
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Functions
The FastConnect stripping system allows PROFIBUS connectors to be fitted to
PROFIBUS LAN cables extremely quickly.
The design of the FastConnect LAN cables allows the use of the FastConnect
stripping tool with which the outer sheath and braid shield can be removed
precisely in one step. Once the cable has been prepared in this way, the
FastConnect bus connectors can be fitted using the insulation displacement
system.
Designed for Industry
SReduction of the assembly times for attaching DTEs by removing the outer
sheath and braid shield in one step.
SSimple connector fitting with the preset FC stripping tool.
SCorrect contact in the PROFIBUS FC connector can be checked without
opening the connector thanks to the transparent cover of the insulation
displacement terminals and color coding for the core assignment.
4.2.2 Area of Application and Technical Specifications of the
FastConnect Bus Connector
Uses
You require bus connectors to attach PROFIBUS cables to 9-pin sub-D interfaces.
Within the FastConnect system, there are various bus connectors with degree of
protection IP 20. The different applications for these connectors are shown in Table
4-3.
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Table 4-3 Structure and Uses of the IP 20-compliant FastConnect Bus
Connectors
Order numbers: 6ES7 972-0BA50-0XA0
6ES7 972-0BB50-0XA0 6GK1 500-0FC00
Appearance:
Recommended for:
SIM 308-B
SIM 308-C
SS5-95U
~ (version 6 or higher)
~
SS7-200
SS7-300
SS7-400
SM7-300
SM7-400
SC7-626 DP
SS5-115U to 155U
~
~
~
~
~
~
SCP 5412 / CP 5613 / CP 5614
SCP 5411
SCP 5511
SCP 5611
SCP 5431 FMS/DP
SCP 342-5
SCP 342-5
SCP 443-5
~
~
~
~
~
~
~
~
SET 200B
SET 200L
SET 200M
SET 200S
SET 200U
~
~
~
~
~
SPG 720/720C
SPG 730
SPG 740
SPG 750
SPG 760
SRepeater RS-485
SOP
SOLM
~
~
~
~
~
~
~
~
~
~
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Technical Specifications
The following table shows the technical specifications of the various bus
connectors:
Table 4-4 Technical Specifications of the IP 20-compliant Bus Connectors
Order numbers: 6ES7 972-
... 0BA50-0XA0
... 0BB50-0XA0
6GK1 500-
0FC00
PG socket 0BA50: no
0BB50: yes no
Max. transmission rate 9.6 Kbps to 12 Mbps 9.6 Kbps to 12 Mbps
Cable outlet 90 °180 °
Terminating resistor Integrated terminating resistor
can be activated with sliding
switch.
Disconnect function:
When the resistor is activated,
the outgoing bus is
disconnected. Attachment with
insulation displacement system
for FastConnect system
Integrated terminating resistor
can be activated with sliding
switch.
Disconnect function:
When the resistor is activated,
the outgoing bus is disconnected.
Attachment with insulation
displacement system for
FastConnect system
Interfaces
– to PROFIBUS node
– to PROFIBUS LAN cable 9-pin sub-D connector
4 insulation displacement
terminals for all FastConnect
PROFIBUS cables (except for
FC process cable)
9-pin sub-D connector
4 insulation displacement
terminals for all FastConnect
PROFIBUS cables (except for FC
process cable)
Power supply
(must be supplied by the DTE) 4.75 to 5.25 V DC 4.75 to 5.25 V DC
Current consumption max. 5 mA max. 5 mA
Permitted ambient conditions
– Operating temperature
– T ransport/storage temperature
– Relative humidity
0 °C to +60 °C
–25 °C to +80 °C
max. 75% at +25 °C
0 °C to +60 °C
–25 °C to +80 °C
max. 75% at +25 °C
Construction
– Dimensions (W x H x D)
– Weight 72.7x16x34
approx. 50 g 61.7x16x35
approx. 50 g
Degree of protection IP20 IP20
Connectable PROFIBUS cable
diameter 8 " 0.5 mm 8 " 0.5 mm
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Disconnect Function
The disconnect function means that the remaining LAN cable is disconnected from
the bus when the terminating resistor is activated. If the terminating resistor is
accidentally activated in the middle of the LAN cable, the error can be recognized
and localized immediately due to the nodes that are no longer accessible.
Disconnecting a Station
The bus connector allows you to disconnect a node from the bus without
interrupting the data traffic on the bus.
Removing the bus connector when the terminating resistor is activated at the end
of the cable causes disruptions on the bus and is not permitted.
Bus Connector with PG Socket
We recommend that you include at least one bus connector with a PG socket in
each bus segment. This makes it easier to commission using a programming
device or PC.
In the bus connectors with a PG socket, all the contacts are connected 1:1 with the
connector pins; in other words, the pinout is the same as the pinout of the attached
device.
Pinout of the Sub-D Male Connector
Table 4-5 shows the pinout of the 9-pin sub-D male connector.
Table 4-5 Pinout of the 9-pin Sub-D Male Connector
Pin
no. Signal
name Meaning
1 - -
2 - -
3 RxD/TxD-P Data line B
4 – –
5 M5V2 Data reference potential (from node)
6 P5V2 Power supply plus (from node)
7 - -
8 RxD/TxD-N Data line A
9 - -
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Figure 4-13 Fitting the LAN Cables in the FastConnect Bus Connector
6ES7972-0B.50-0XA0
Figure 4-14 Fitting the LAN Cables in the FastConnect Bus Connector 6G1500-0FC00
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4.2.3 Using the FastConnect Stripping Tool for Preparing FC Cables
The steps required to strip a cable are illustrated using the using the FastConnect
bus connector with a 90° cable outlet 6ES7972-0BB50-0XA0.
They apply analogously to the FastConnect bus connector with a 180° cable outlet
6GK1500-0FC00.
1. How to hold the stripping
tool in the right hand 2. Measure the length to be
stripped by holding the cable
against the template. Mark
the position using the index
finger of your left hand.
3. Insert the measured end of
the cable into the tool as far
as allowed by the index finger
of the left hand.
4. Clamp the end of the cable
in the stripping tool. 5. Turn the tool four times in
the direction of the arrow for
PVC insulation (eight times
for PUR or PE insulation).
6. Keeping the tool closed,
remove it from the end of the
cable. If the cut is poor,
change the blade cassette.
7. Remnants remain in the
tool. After opening the tool,
the remnants of the cable can
be removed.
8. Remove the protective
layer from the cores. 9. Fit the FastConnect cable
into the connector.
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A1, B1 A2, B2 Switch
“ON”
Switch
“OFF”
Incoming cable A1, B1
Outgoing cable A2, B2
Terminating resistor with
disconnect function
When you use the connector
at the end of a segment, set
the switch to “ON”
(disconnect function)
When you use the connector
within a segment, set the
switch to “OFF”.
1
2
1. Undo the screw of the
strain relief. 2. T urn back the strain relief
clamp. 3. Lift the contact cover.
4. Fit the incoming cable into
the contact cover labeled A1,
B1 (remember to keep the
color coding consistent).
5. Press down the contact
cover firmly. 6. If you use the connector
within a segment, fit the
outgoing cable into the
contact cover labeled A2, B2.
2
1
7. Press down the contact
cover firmly. 8. Turn back the strain relief
clamp. 9. T ighten the screw of the
strain relief clamp.
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4.3 Bus Connectors
Uses
Using the bus connector for SIMATIC NET PROFIBUS:
SNodes with an electrical 9-pin sub-D interface complying with EN 50170 can be
connected directly to the SIMATIC NET PROFIBUS cables
SElectrical segments or individual nodes can be connected to the optical link
module (OLM, OBT).
SNodes or programming devices can be connected to a repeater.
Note
The integrated bus terminators and the mechanical specifications of the SIMATIC
NET bus connectors are tailored to the SIMATIC NET PROFIBUS cables (cable
type A of the PROFIBUS standard EN 50170-1-2). Fitting bus connectors to
cables with different electrical or mechanical properties can cause problems during
operation!
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4.3.1 Area of Application and Technical Specifications of the Bus
Connector
Uses
You require bus connectors to attach the PROFIBUS LAN cable to 9-pin sub-D
interfaces. There are various bus connectors with the degree of protection IP 20
and the situations in which they are used are listed in Table 4-6.
Table 4-6 Design and Applications of the IP 20-compliant Bus Connectors
Order
numbers: 6ES7 972-0BA11-0XA0
6ES7 972-0BB11-0XA0 6ES7 972-0BA40-0XA0
6ES7 972-0BB40-0XA0 6ES7
0BA30-0XA0 6GK1
500-0EA02
Appearance:
35_ cable outlet 30_ cable outlet
SIEMENS
Recommended
for:
SIM 308-B
SIM 308-C
SS5-95U
~ (version 6 or higher)
~
~
~
~
~
~
~
Use in PLC with
integrated
interface:
SS7-300
SS7-400
SM7-300
SM7-400
~
~
~
~
~
~
~
~
~
~
~
Use in PLC with
SIM 308 C
SCP 5431
FMS/DP
SCP 342-5
SCP 343-5
SCP 443-5
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
Use in PG with
MPI interface ~
Use in PG with
SCP5412(A2)
SCP 5411
SCP 5511
SCP 5611
SCP 5613/14
~
~
~
~
~
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Table 4-6 Design and Applications of the IP 20-compliant Bus Connectors, continued
Order
numbers: 6GK1
500-0EA02
6ES7
0BA30-0XA0
6ES7 972-0BA40-0XA0
6ES7 972-0BB40-0XA0
6ES7 972-0BA11-0XA0
6ES7 972-0BB11-0XA0
SET 200B
SET 200L
SET 200M
SET 200S
SET 200U
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
SPG
720/720C
SPG 730
SPG 740
SPG 750
SPG 760 ~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
~
SRepeater
SOP
SOLM
~
~
~
~
~
~
~
~
~
Use in
SINUMERIK
840 C and 805
SM
SIM 328N
SIM 329N ~
~ ~
~
Use in NC 840
D and FM NC
SIMODRIVE
611 MCU
SCP 342-5 ~ ~
Use in TI 505
STI 505 FIM
STI 505
PROFIBUS
DP
SRBC ~ ~
~
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Technical Specifications
The following table shows the technical data of the various bus connectors:
Table 4-7 Technical Specifications of the IP 20-compliant Bus Connectors
Order numbers: 6ES7 972-
... 0BA11-0XA0
... 0BB11-0XA0
6ES7 972-
... 0BA40-0XA0
... 0BB40-0XA0
6ES7 972-
0BA30-0XA0 6GK1 500-
0EA02
PG socket 0BA11: no
0BB11: yes 0BA40: no
0BB40: yes no no
Max. transmission
rate 12 Mbps 12 Mbps 1.5 Mbps 12 Mbps
Terminating resistor
and disconnect
function
integrated integrated no integrated
Cable outlet vertical oblique 35_oblique 30_axial
Interfaces
Sto PROFIBUS
node
Sto PROFIBUS
LAN cable
9-pin sub-D male
connector
4 modular
terminals for wires
up to 1.5 mm2
9-pin sub-D male
connector
4 modular
terminals for wires
up to 1.5 mm2
9-pin sub-D male
connector
4 insulation
displacement
terminals for wires
0.644 " 0.04 mm
9-pin sub-D male
connector
4 modular
terminals for wires
up to 1.5 mm2
Connectable
PROFIBUS cable
diameter
8 " 0.5 mm 8 " 0.5 mm 8 " 0.5 mm 8 " 0.5 mm
Power supply (must
be supplied by DTE) 4.75 to 5.25 V DC 4.75 to 5.25 V DC --- 4.75 to 5.25 V DC
Current consumption max. 5 mA max. 5 mA --- max. 5 mA
Permitted ambient
conditions
SOperating
temperature
STransport/storage
temperature
SRelative humidity
0 _C to +60 _C
-25 _C to +80 _C
max. 75 % at
+25 _C
0 _C to +60 _C
-25 _C to +80 _C
max. 75 % at
+25 _C
0 _C to +60 _C
-25 _C to +80 _C
max. 75 % at
+25 _C
0 _C to +55 _C
-25 _C to +70 _C
max. 95 % at
+25 _C
Dimensions (in mm) 15.8 54 34 16 54 38 15 58 34 15 39 57
Weight approx. 40 g approx. 40 g approx. 30 g approx. 100 g
Disconnect Function
The disconnect function means that the remaining LAN cable is disconnected from
the bus when the terminating resistor is activated. If the terminating resistor is
accidentally activated in the middle of the LAN cable, the error can be recognized
and localized immediately due to the nodes that are no longer accessible.
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Disconnecting a Station
The bus connector allows you to disconnect a node from the bus without
interrupting the data traffic on the bus.
Removing the bus connector when the terminating resistor is activated at the end
of the cable causes disruptions on the bus and is not permitted.
Bus Connector with PG Socket
We recommend that you include at least one bus connector with a PG socket in
each bus segment. This makes it easier to commission using a programming
device or PC.
In the bus connectors with a PG socket, all the contacts are connected 1:1 with the
connector pins; in other words, the pinout is the same as the pinout of the attached
device.
Pinout of the Sub-D male Connector
Table 4-8 shows the pinout of the 9-pin sub-D male connector.
Table 4-8 Pinout of the 9-pin Sub-D Male Connector
Pin
no. Signal
name Meaning
1 - -
2 - -
3 RxD/TxD-P Data line B
4 - -
5 M5V2 Data reference potential (from station)
6 P5V2 Power supply plus (from station)
7 - -
8 RxD/TxD-N Data line A
9 - -
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4.4 Attaching the LAN Cable to the Bus Connector
4.4.1 Attaching the LAN Cable to Bus Connector (6ES7 972-0B.11..)
Appearance (6ES7 972-0B.11 ...)
Figure 4-15 shows the bus connector with order number 6ES7 972-0B.11 ...
SIEMENS
Screws for
mounting on the
station
PG socket (only with
6ES7 972-0BB11-0XA0)
9-pin sub-D male
connector for
connection to the
station
Cable guides for
PROFIBUS LAN
cable
Housing screws
Switch for
terminating resistor
Figure 4-15 Bus Connector (order number 6ES7 972-0B.11 ...)
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Connecting Up the LAN Cable
Connect up the LAN cable to the bus connector with order number
6ES7 972-0B.11 ... as follows:
1. Strip the LAN cable as shown in Figure 4-16 using the FastConnect stripping
tool (sizes and lengths are shown in the table on the rear of the tool).
7.5 9
6
7.5 9
6
6XV1 830-0EH10 6XV1 830-3FH10
16
Figure 4-16 Cable Stripped for Connection to Bus Connector (6ES7 972-0B.11 ...)
2. Open the casing of the bus connector by undoing the screws and removing the
cover.
3. Insert the green and red cores in the screw terminal as shown in Figure 4-17.
Make sure that you always connect the same cores to the same terminal A or B
(for example terminal A is always connected to green and terminal B always to
red).
4. Press the cable sheath between the two clips. This secures the cable.
5. Screw the green and red cores tight in the screw terminal.
A B A B A B A B
LAN cable attachment for
first and last station on the
bus1
LAN cable attachment for all
further stations on the bus
1: The LAN cable must always be connected up on the left-hand side.
Figure 4-17 Connecting the LAN Cable to the Bus Connector (6ES7 972-0B.11 ...)
6. Fasten the cover again with the screws.
Make sure that the cable shield makes good contact with the shield clamp.
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Note
Stranded cores must only be used in screw terminals with wire-end ferrules fitted
(0.25 mm2 complying with DIN 46228). Use only wire-end ferrules made of
materials with permanently stable contact properties, for example copper with a
tin-plated surface (not aluminum).
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4.4.2 Connecting the LAN Cable to Bus Connector (6ES7
972-0BA30-0XA0)
Appearance (6ES7 972-0BA30-0XA0)
Figure 4-18 shows the bus connector with order number 6ES7 972-0BA30-0XA0:
Screws for
mounting on the
station 9-pin sub-D male
connector for
connection to the
station
Casing screws
Figure 4-18 Bus Connector (order number 6ES7 972-0BA30-0XA0)
Connecting Up the LAN Cable
Connect up the LAN cable to the bus connector with order number
6ES7 972-0BA30-0XA0 as follows:
1. Strip the insulation as shown in Figure 4-19.
3
3
A
B
A
B
27
35
29
36
Figure 4-19 Cable Stripped for Connection to Bus Connector (6ES7 972-0BA30-0XA0)
2. Open the casing of the bus connector by undoing the screws and removing the
cover.
3. Press the LAN cable into the strain relief clips. The cable shield must make
good contact with the metal part.
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4. Place the green and red cores in the cable guides above the insulation
displacement terminals as shown in Figure 4-20.
Make sure that you always connect the same cores to the same terminal A or B
(for example terminal A is always connected to green and terminal B always to
red).
5. Press the red and green cores into the insulation displacement terminals lightly
using your thumbs.
6. Secure the cover with the screws.
A BA B
Cable guides
Strain relief
Cable guides
Insulation
displacement
terminals
Figure 4-20 Connecting the LAN cable to bus connector (6ES7 972-0BA30-0XA0)
Note
The bus connector 6ES7 972-0BA30-0XA0 cannot be fitted to LAN cables with
stranded cores.
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4.4.3 Connecting the LAN Cable to Bus Connector (6ES7 972-0B.40)
Appearance (6ES7 972-0B.40 ...)
Figure 4-21 shows the bus connector with order number 6ES7 972-0B.40 ...
Screws for
mounting on the
station
9-pin sub-D male
connector for
connection to the
station
Housing screws
PG socket (only with
6ES7
972-0BB40-0XA0)
Figure 4-21 Bus Connector (order number 6ES7 972-0B.40 ...)
Connecting Up the LAN Cable
Connect up the LAN cable to the bus connector with order number
6ES7 972-0B.40 ... as follows:
1. Strip the LAN cable as shown in Figure 4-22 using the FastConnect stripping
tool (sizes and lengths are shown in the table on the rear of the tool).
6XV1 830-0EH10
A1 B1
7.5
516
Figure 4-22 Cable Stripped for Connection to Bus Connector (6ES7 972-0B.40 ...)
2. Open the casing of the bus connector by undoing the screws and removing the
cover.
3. Insert the green and red cores in the screw terminal as shown in Figure 4-22.
Make sure that you always connect the same cores to the same terminal A or B
(for example terminal A is always connected to green and terminal B always to
red).
4. Press the cable sheath between the two clips. This secures the cable.
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5. Screw the green and red cores tight in the screw terminal.
LAN cable attachment for
first and last station on the
bus1
LAN cable attachment for all
further stations on the bus
1: The LAN cable must always be connected up on the left-hand side.
A B A B
A B A B
Switch = “ON”
(terminating resistor
activated)
Switch = “OFF”
(terminating resistor
deactivated)
Cable shield must make
good contact with the metal
part.
Cable shield must make
good contact with the metal
part.
Figure 4-23 Connecting the LAN Cable to Bus Connector (6ES7 972-0B.40 ...)
6. Fasten the cover again with the screws.
Note
Stranded cores must only be used in screw terminals with wire-end ferrules fitted
(0.25 mm2 complying with DIN 46228). Use only wire-end ferrules made of
materials with permanently stable contact properties, for example copper with a
tin-plated surface (not aluminum).
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4.5 Installing the Bus Connector with Axial Cable Outlet
Appearance (6GK1500-0EA02)
A1B1A2B2
L
L
L
R2
L
R1
R3
A1B1A2B2
L
L
L
R2
L
R1
R3
LAN Cable Connection and Switch Setting for First and Last Station on the Bus
LAN Cable Connection and Switch Setting for all Other Stations on the Bus
Figure 4-24 Installing the Bus Connector with Axial Cable Outlet
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Fitting the Bus Connector
Points to note about installing the bus connector with axial cable outlet (order
number 6GK1 500-0EA02):
SStrip both cable ends as shown in Figure 4-25 with the FastConnect stripping
tool (sizes and lengths are shown in the table on the rear of the tool).
10 mm
7.5 mm
AB
approx. 6 mm
Figure 4-25 Preparing the Ends of the Cable for the Bus Connector with Axial Cable Outlet
SUndo the screws in the casing and remove the cover.
SFeed the wires into the required terminals of the screw terminal blocks.
SPress the cable sheath between the two clips.
SMake sure that the cable sheaths are lying on the metal conductor.
SWhen you connect to the screw terminals, the stranded cores must be fitted
with wire-end ferrules (0.25 mm2 complying with DIN 46228).
SMake sure that the braid shield lies on the contact surfaces of the connector.
SReplace the cover and screw it tight.
SActivate the terminating resistor if the bus connector is at the end of a segment.
Note
Stranded cores must only be used in screw terminals with wire-end ferrules fitted
(0.25 mm2 complying with DIN 46228). Use only wire-end ferrules made of
materials with permanently stable contact properties, for example copper with a
tin-plated surface (not aluminum).
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4.6 Plugging the Bus Connector into the Module
Fitting the Bus Connector
To fit the bus connector, follow the steps outlined below:
1. Plug the bus connector into the module.
2. Screw the bus connector to the module.
3. If the bus connector is located at the start or end of a segment, you must
activate the terminating resistor (switch setting ON”) (see Figure 4-26).
It is not possible to activate the terminating resistor on the bus connector
6ES7 972-0BA30-0XA0.
Note
Remember the following:
SBy activating the terminating resistor, the outgoing LAN cable is
disconnected from the incoming LAN cable.
SStations equipped with a terminating resistor must always be
supplied with voltage when the network starts up and during
operation.
Terminating
resistor activated Terminating resistor
not activated
on
off
on
off
Figure 4-26 Bus Connector (6ES7 972-0B.11-...): Terminating Resistor Activated and
deactivated
Removing the Bus Connector
If the LAN cable is connected through, you can remove the bus connector from
the PROFIBUS-DP interface at any time without interrupting data traffic on the
bus.
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!Warning
Possible disturbance of data traffic on the bus
A bus segment must always be terminated at both ends with the
terminating resistor. This is, for example, not the case when the power
supply to the last node with a bus connector is turned off. Since the
bus connector is supplied with power from the station, the terminating
resistor has no effect.
Make sure that the power supply for the stations on which a
terminating resistor is activated is always turned on.
As an alternative, you can also use the PROFIBUS terminator as an
active terminating resistor (see Section 5.7).
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4.7 Bus Terminals for RS-485 Networks
4.7.1 Versions
Overview
A bus terminal is used to attach a single PROFIBUS node with an RS-485
interface to the PROFIBUS LAN cable.
Bus terminals are available in the following versions:
Table 4-9 Versions of the Bus Terminal
Bus terminal RS-485 Bus terminal 12 M
Order no.:
With 1.5 m tap line 6GK1 500-0AA10
With 1.5 m tap line and
additional PG interface 6GK1 500-0DA00
With 3 m tap line 6GK1 500-0AB00
Transmission rate 9.5 Kbps to 1.5 Mbps 9.5 Kbps to 12 Mbps
Power supply 5V / 10 mA
from the node interface 5V / 90 mA
from the node interface
Terminating resistor
combination integrated, on/off Integrated, can be activated
with disconnect function
Casing degree of protection IP20 IP20
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4.7.2 Design and Functions of the RS-485 Bus Terminal
Figure 4-27 RS-485 Bus Terminal
Bus Terminal RS-485
The RS-485 bus terminal is used to connect data terminal equipment (DTEs) with
an RS-485 interface to the LAN cable. It includes the following:
S6 modular terminals for conductors with a cross-sectional area ≤ 1.5 mm2 for
connection of the incoming and outgoing LAN cable and, if necessary, the
protective earth (PE)
SScrew down clamps for shield contact
SA switch (“Bus terminated”) to allow termination at the end of an RS-485
segment with the characteristic impedance
SA connecting cable preassembled (either 1.5 m or 3 m long) with a 9-pin sub-D
male connector for direct connection to a DTE.
Cable Termination
The sub-D connector is plugged into the sub-D female connector of the DTE and
secured by screws. If the terminating resistor is activated, the RS-485 bus terminal
requires current of maximum 5 mA at a power supply of 5 V between pins 5 and 6
of the connector from the DTE.
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Table 4-10 Pinout of the Sub D Connector
Pin Signal Meaning
1 PE Protective earth
2 NC Not used
3B (RXD/TXD-P) Data line B (receive/transmit data P)
4 NC Not used
5M5V2 (DGND) Data ground
6P5V2 (VP) + 5V voltage plus
7 NC Not used
8A (RXD/TXD-N) Data line A (receive/transmit data N)
9 NC Not used
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Additional PG Interface
The RS-485 bus terminal with additional PG interface (see Figure 4-28) has an
additional 9-pin sub-D female connector on the front panel for connecting, for
example a programming device using a PG connecting cable. The pinout is
identical to that shown in Table 4-10.
Figure 4-28 RS-485 Bus Terminal with Additional PG Interface
Note
The SIMATIC NET PROFIBUS RS-485 bus terminals are only suitable for
transmission rates ≤1.5 Mbps. For higher transmission rates, use the 12M bus
terminal.
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4.7.3 Design and Functions of the 12M Bus Terminal
Figure 4-29 12M Bus Terminal (BT12M)
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Bus terminal 12 M
The 12M bus terminal is used to connect data terminal equipment (DTEs) with an
RS-485 interface to the LAN cable.
It includes the following:
S1 modular terminal block with 6 terminals for conductors with a cross-sectional
area <= 1.5 mm2 for connection of the incoming and outgoing LAN cable and, if
necessary, the protective earth (PE)
SScrew down clamps for field contact
STwo switches:
Right switch (‘Termination‘), to terminate the end of an incoming, electrical
segment (A1, B1) with the characteristic impedance (switch on). At the same
time, the outgoing, electrical segment (A2, B2) is interrupted.
Left switch, used to set the range of the transmission rate 9.6 Kbps to 1.5 Mbps
and 3 Mbps to 12 Mbps.
SA 1.5 m long tap line with a 9-pin sub-D male connector for direct attachment to
a DTE.
The sub-D connector is plugged into the sub-D female connector of the DTE and
secured by screws. The 12M bus terminal requires a current of 90 mA at a
power supply of 5 V from the DTE between pins 5 (M5) and 6 (P5) of the sub-D
male connector.
A maximum of 32 BT12M modules can be connected to one bus segment. If
other components, such as repeaters are connected to a bus segment, this
reduces the maximum number of 12M bus terminals.
PE A1 B1 A2 B2 PE
off
on Termination
off
on
R
9.6k t o 1.5M
3M to 12M
Figure 4-30 Operator Controls
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Termination
The termination must be activated on the first and last node on the bus segment. If
termination is activated (termination on), the connection between the incoming (A1,
B1) and outgoing (A2, B20 segment is interrupted. The advantage of this is that if a
bus terminating resistor is activated incorrectly, the stations after the bus terminal
can no longer be accessed. When a segment is started up, you can then make
sure that no bus terminating resistors are activated that are not located at the
beginning or end of the network.
Note
Restriction when using the 12M bus terminal at 500 Kbps
This restriction only affects segments longer than 80 m.
If the 12M bus terminal is operated at a transmission rate of 500 Kbps along with
the RS-485 bus terminal with a 3.0 m tap line (6GK1 500-0AB00), a minimum
clearance of 5 m (= 5 m PROFIBUS cable) must be maintained between the
RS-485 bus terminal with the 3.0 m tap line. The 12M bus terminals can be
arranged at any point in the segment; in other words, no minimum clearance
needs to be maintained. The 12M bus terminal can also be included between two
RS-485 bus terminals with a 3.0 m tap line. The only important point in this respect
is that the PROFIBUS cable between the two RS-485 bus terminals with 3.0 m tap
lines must be a total of 5 m long.
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4.7.4 Mounting/Attaching the LAN Cables
The bus terminal can be mounted in three different ways:
SBy snapping it on to a 15 x 35 mm standard DIN rail (DIN EN50022-35x15)
SBy screwing the unit to a mounting plate using two fillister head screws. Figure
4-31 shows the drilling diagram for mounting the unit.
Thread M4 or
through-hole
4.2 mm
42.5 mm
50 mm
67.3 mm
50 mm
Top edge of bus terminal
Figure 4-31 Drilling Diagram for the Bus Terminal
SWall mounting (brick, concrete). Fittings required: 2 x 5 mm plugs,
2 round head wood screws size 3.5 mm and 2 washers 4.3 mm inner diameter.
The holes must be drilled as shown in Figure 4-31.
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Note
Please make sure that the bus terminal is accessible for maintenance and
installation work even during operation.
To connect the LAN cable, follow the steps below (see Figure 4-32):
1. Open the LAN cable at the point at which the bus terminal will be inserted.
2. Strip approximately 33 mm of the outer sheath. Make sure when removing the
sheath that the braid shield is not damaged.
3. Remove a length of approximately 12 mm of the braid shield and foil shield (the
foil shield can be left somewhat longer).
ÂÂÂ
ÂÂÂ
ÂÂÂ
ÂÂÂ
ÂÂÂÂ
ÂÂÂÂ
ÂÂÂÂ
ÂÂÂÂ
10 mm
11 mm
12 mm Fold braid shield back over outer
sheath
Foil shield
Figure 4-32 Preparing the LAN Cable for Connection to the Bus Terminal
4. Fold back the braid shield over the cable sheath.
5. Remove approximately the last 10 mm of insulation from the cores.
6. Fit the LAN cable to the terminal so that the braid shield is lying bare under the
cable clamp.
7. Screw the ends of the cores to the corresponding terminals (if the cores are
stranded, for example, the trailing cable, wire-end ferrules with 0.25 mm2
complying with DIN 46228 must be used).
8. If the bus terminal is at the start or end of a segment, the integrated terminating
resistor must be turned on (switch set to “Terminator on”).
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Note
The shield clamps are used solely to contact the shields and are not suitable as
strain-relief clamps. This means that the LAN cables must be secured as close as
possible to the bus terminals to provide mechanical strain relief.
Note
Bus terminals installed at the end of segments require the 5 V power supply from
the DTE interface to supply the activated, integrated terminating resistor.
The sub-D male connector must therefore always be plugged in and secured by
screws. The attached DTE must not be turned off.
Note
The same wires (green or red must always be connected to the same terminal A
or B in all bus terminals and with all bus connections) and be uniform throughout
the segment.
The following scheme is recommended for a PROFIBUS network:
Terminal A: green wire
Terminal B: red wire
Note
Notes on the 12M bus terminal
The 12M bus terminal must only be plugged in to an interface with the power
turned off.
At the ends of a segment, the PROFIBUS cable must only be connected to
terminal pair A1, B1. Terminals A2, B2 are disconnected from the bus when the
terminating resistor is activated.
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4.7.5 Grounding
If the bus terminal is mounted on a DIN rail (see Figure 4-33), the shield clamp
makes large-area contact with the rail via an internal spring. To connect the cable
shield with local ground, a connection between the DIN rail over as short a
distance as possible to local earth is adequate.
PE
AB A B
PE
ÓÓÓÓ
ÓÓÓÓ
P
EAB AB
P
E
ÓÓÓÓÓ
ÓÓÓÓÓ
AB AB
PE
ÓÓÓÓÓ
ÓÓÓÓÓ
Ñ
Ñ
PE
AB AB
PE
ÓÓÓÓÓ
ÓÓÓÓÓ
Ñ
Ñ
ÑÑ
ÑÑ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Wall installation with securing
screws Installation with a standard rail
on a cabinet panel
Shield clamp/
PE
grounding bar
Installation on closet panel
with securing screws
Bus
terminated Bus
terminated
Bus
terminated
Bus
terminated
Shield clamp/
grounding bar
MADE IN GERMANY MADE IN GERMANY MADE IN GERMANY
MADE IN GERMANY
1)
2
)
1) If this grounding cable exceeds a length of 20 cm,
the shield must be grounded to the closet panel (2).
Figure 4-33 Ways of Installing and Grounding the Bus Terminal
Note
The grounding bar and local ground must be connected by a Cu conductor with ≥
6 mm2 cross-section over as short a distance as possible.
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Note
The DIN rail must have a good conducting surface (for example tin plated).
Wall Mounting
Note
If the bus terminal is mounted on a wall, at least one PE terminal must be
connected to local ground. This connection should be over the shortest possible
distance.
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4.7.6 Technical Data of the RS-485 Bus Terminal
Technical Data of the RS-485 Bus Terminal
Connector to DTE 9-pin sub-D male connector
Transmission rate 9.6 to 1.500 Kbps
PG interface (optional) 9-pin sub-D female connector
Power supply range 4.75 to 5.25 V DC
Current consumption: 5 mA
Environmental conditions:
Operating temperature 0 to 55 °C
Storage/transport temperature -25 to 70 °C
Relative humidity F complying with DIN 40040 15% to 95%
at 25 °C no condensation
Construction
Dimensions (W x H x D) in mm RS-485 50 x 135 x 47
RS-485/PG 50 x 135 x 52
Weight
(incl. 1.5 m connecting cable) RS-485, RS-485/PG approx. 310 g
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4.7.7 Technical Data of the 12M Bus Terminal
Technical Data of the 12M Bus Terminal
Connector to DTE 9-pin sub-D male connector
Transmission rate 9.6 Kbps to 12 Mbps
Power supply DC 5 V ± 5%
safety extra-low voltage (SELV) complying with
EN 60950
Current consumption 90 mA at 5 V
Total power dissipation 0.45 W
Value factor 0.1
In operation at 1.5 Mbps along with
RS-485 bus terminal.
(See Section: “Network Configuration”)
Electromagnetic Compatibility
Noise emission
limit class B complying with EN 55022=CISPR 22
Noise immunity on signal lines +/– 2 kV (to IEC 801-5 / IEC 1000-4-5, surge)
+/– 2 kV (to IEC 801-4 / IEC 1000-4-4, burst)
Noise immunity to static electricity discharge +/– 6 kV, contact discharge (to IEC 801-2; ESD /
IEC 1000-4-2)
Noise immunity to high-frequency interference 10 V/m with 80% amplitude modulation at
1 kHz,
80 MHz – 1 GHz (to IEC 801-3 / ENV 50140)
10 V/m 50 % on time at 900 MHz (to ENV
50204)
10 V with 80 % amplitude modulation at 1 kHz
10 kHz – 80 MHz (to IEC 801-6 / ENV 50141)
Climatic Conditions
Operating temperature 0 to 60 °C
Storage/transport temperature –40 to 70 °C
Relative humidity max. 95% at +25 °C no condensation
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Mechanical Conditions
Oscillation
operation Tested to DIN IEC 68-2-6
10 to 58 Hz; amplitude 0.075 mm
58 to 500 Hz; acceleration 9.8 m/s2
Shock
operation tested to DIN IEC 68-2-27
Half sine: 100 m/s2 , 16 ms
Construction
Dimensions (W x H x D) in mm
50 x 135 x 47
Tap line length 1.5 m
Weight
(incl. 1.5 m connecting cable) approx. 350 g
Degree of protection IP20
Test Marks CE, UL, CSA
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4.8 Cable Connections
4.8.1 Cable Connections to Network Components
Sometimes, a connection between two different LAN cable sections is necessary,
for example, a transition from the standard LAN cable to a section with trailing
cable.
The easiest way to implement this transition is to use the two LAN cable
attachments of a bus connector, bus terminal or repeater. The attachment of the
cables is described in detail in this chapter. For information about laying cables and
mechanical protection of the cables refer to Appendix C “Installing LAN Cables”.
For the transition from the underground cable to the standard LAN cable, it is
advisable to protect against overvoltage (see Appendix B “Lightning and
Overvoltage Protection”.
4.8.2 Cable Connection without Bus Connection Elements
Sometimes, a connection is necessary between LAN cable sections at locations
where no nodes or network component connections are intended, for example,
when repairing a broken LAN cable. Note the following information:
The all-round shielding of the LAN cable must be retained
To make the cable connection, use, for example, a commercially available sub-D
male connector and socket with metal casing. Only sub-D components with a
spring shield collar ensure a reliable shield connection.
Avoid accidental shield contact with the environment.
The male connector shield should not make any undefined, accidental contact to
conductive parts, since this can lead to undefined shield currents. Connect the
connector casing either permanently to ground potential or wrap the connector in
insulation that reliably prevents contact.
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Keep to the permitted ambient conditions
Remember that a standard connecting cable cannot stand up to the same
environmental conditions as an uninterrupted LAN cable. If necessary, provide
extra protection for the connection to avoid dampness, dust or aggressive gases
causing problems by covering the connection in a cable sleeve. You can find
information about ordering this in Appendix I-2 “SIMATIC NET Support and
Training”.
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4.9 Preassembled Connecting Cables
4.9.1 830-1T Connecting Cable
Uses
The 830-IT connecting cable is a preassembled cable for fast and cost-effective
attachment of DTEs to OLMs and OBTs.
Design
The 830-1T connecting cable consists of a twisted pair (stranded copper cores)
with a braid shield. It is fitted with a 9-pin sub-D male connector at both ends. Both
ends of the cable have terminating resistors (cannot be deactivated). The cable is
available in lengths of 1.5 and 3 m.
Figure 4-34 830-1T Connecting Cable
Function
The 830-1T connecting cable connects the following:
SThe electrical interface of the Optical Link Module (OLM, OBT) with the
PROFIBUS interface of a DTE.
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Note
Due to the integrated terminating resistors, the 830-1T connecting cable must not
be used as a tap line (for example for attaching a PG) to a PROFIBUS segment.
Table 4-11 Ordering Data for SIMATIC NET 830-1T Connecting Cable
Ordering Data:
SIMATIC NET 830-1T connecting cable
for PROFIBUS for connecting DTEs to OLMs and
OBTs, preassembled with two sub-D male connectors,
9-pin cable, terminated at both ends
1.5 m
3 m
6XV1830-1CH15
6XV1830-1CH30
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4.9.2 830-2 Connecting Cable
Uses
The 830-2 connecting cable is a preassembled cable for fast and cost-effective
attachment of PROFIBUS nodes (for example HMI) to programmable controllers
for transmission rates up to 12 Mbps.
Design
The 830-2 connecting cable consists of the PROFIBUS standard cable. It has a
9-pin sub-D male connector with a straight cable outlet at one end and a 9-pin
sub-D male connector with a 90° cable outlet at the other. The connector with the
90° cable outlet is equipped with a PG interface. The terminating resistors can be
activated in both connectors. The cable is available in lengths of 3 m, 5 m and
10m.
Figure 4-35 830-2 Connecting Cable
Function
The 830-2 connecting cable connects the following:
SThe electrical interface of the Optical Link Module (OLM, OBT) and the
PROFIBUS interface of a PROFIBUS node
SThe electrical interface of two PROFIBUS nodes (OP, programmable controller)
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Table 4-12 Ordering Data for SIMATIC NET 830-2 Connecting Cable
Ordering Data:
SIMATIC NET 830-2 connecting cable
for PROFIBUS for connecting DTEs to OLMs and
OBTs, preassembled with two sub-D male connectors,
9-pin, terminating resistors can be activated.
3 m
5 m
10 m
6XV1830-2AH30
6XV1830-2AH50
6XV1830-2AN10
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Active Components for RS-485 Networks 5
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5.1 RS-485 Repeater
What is an RS-485 Repeater?
An RS-485 repeater amplifies data signals on bus cables and links bus segments.
Using the RS-485 Repeater (6ES7 972-0AA01-0XA0)
You require an RS-485 repeater in the following situations:
SWhen there are more than 32 stations (including repeaters) connected to the
bus
SWhen electrically isolated bus segments are required or
SWhen the maximum cable length of a segment is exceeded (see Chapter 3
“Network Configuration”).
Rules
If you want to install a PROFIBUS network with RS-485 repeaters, you can
connect a maximum of nine RS-485 repeaters in series.
Design of the RS-485 Repeater
Table 5-1 shows the elements of the RS-485 repeater.
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Table 5-1 Description and Functions of the RS-485 Repeater
Layout of the Repeater No. Function
DC
24 V L+ M PE M 5.2 À
10
ÀTerminal for connecting the power supply of the RS 485
repeater (pin “M5.2” is the reference ground if you want to
measure the voltage between terminals “A2” and “B2”).
24 V
À
Á
10
ÁShield clamp for strain relief and grounding the LAN cable of
bus segment 1 or bus segment 2
ÂÂTerminal for the LAN cable of bus segment 1
Â
A1 B1 A1 B1 ÃTerminating resistor for bus segment 1 )1
Ã
Ä
È
A1 B1 A1 B1
PG 11
OFF
ON
DP1
ÄSwitch for OFF state
(= Disconnect bus segments 1 and 2, for example, during
commissioning)
Å
OP DP2 12 ÅTerminating resistor for bus segment 2 )1
SIEMENSON ÆTerminal for the LAN cable of bus segment 2
SIEMENS
RS 485-REPEATER
Æ
A2 B2 A2 B2 ÇCatch for mounting and removing the RS-485 repeater on a
standard rail
Á
ÈInterface for PG/OP on bus segment 1
Á
10 LED 24 V power supply
Ç11 LED indicating bus activity on segment 1
12 LED indicating bus activity on segment 2
)1 If the terminating resistor is activated, the right-hand bus attachment is disconnected (see
Figure 5-3) !
Note
Terminal M5.2 of the power supply (see Table 5-1, no. À) is used as the reference
ground for signal measurements if problems occur and must not be wired up.
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Technical Specifications
Table 5-2 lists the technical data of the RS-485 repeater:
Table 5-2 Technical Data of the RS-485 Repeater
Technical Specifications
Power supply
SRated voltage 24 V DC
SRipple (static limit) 20.4 V DC to 28.8 V DC
Power consumption at rated voltage
SWithout load on the PG/OP connector 200 mA
SLoad on the PG/OP connector (5 V/90 mA) 230 mA
SLoad on the PG/OP connector (24 V/100 mA) 300 mA
Electrical isolation yes, 500 V AC
Transmission rate (detected automatically by
repeater) 9.6 Kbps, 19.2 Kbps, 45.45 Kbps,
93.75 Kbps, 187.5 Kbps, 500 Kbps,
1.5 Mbps, 3 Mbps, 6 Mbps 12 Mbps
Degree of protection IP20
Dimensions W H D (in mm) 45 128 67
Weight (including packing) 350 g
Pinout of the Sub D Connector (PG/OP Connector)
The 9-pin sub D connector has the following pinout:
Table 5-3 Pin Assignment of the 9-Pin Sub D Connector PG/OP Connector
Layout Pin no. Signal name Meaning
1 – –
2 M24V Chassis 24 V
53 RxD/TxD-P Data line B
9
44RTS Request To Send
385 M5V2 Data reference potential (from station)
276 P5V2 Power supply plus (from station)
2
167 P24V 24 V
18 RxD/TxD-N Data line A
9 – –
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Block Diagram
Figure 5-1 shows the block diagram of the RS-485 repeater:
SBus segment 1 and bus segment 2 are electrically isolated.
SBus segment 2 and the PG/OP connector are electrically isolated.
SSignals are amplified:
–between bus segment 1 and bus segment 2
–between the PG/OP connector and bus segment 2
5V
24 V
Segment 2
A2
B2
A2
B2
Segment 1
A1
B1
A1
B1
PG/OP
socket
L+ (24 V)
M
A1
B1
5 V
M5 V
L+ (24 V)
M
PE
M 5.2
Logic
5V
24 V
1M1M
Figure 5-1 Block Diagram of the RS-485 Repeater
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5.2 Possible Configurations with the RS-485 Repeater
Overview
The following section explains the configurations in which you can use the RS-485
repeater:
SSegment 1 and Segment 2 terminated on the RS-485 repeater (see Figure 5-3)
SSegment 1 terminated on the RS-485 repeater and segment 2 connected
through on the RS-485 repeater (see Figure 5-4 )
and
SSegment 1 and Segment 2 connected through on the RS-485 repeater (see
Figure 5-5 )
Terminating Resistor On/Off
Figure 5-2 shows the setting for the terminating resistor:
Terminating resistor
On:Terminating resistor
Off:
Figure 5-2 Setting of the Terminating Resistor
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Segments 1 and 2 Terminated
Figure 5-3 shows how to connect the RS-485 repeater to the ends between two
segments:
R
Segment 1
Segment 2
Terminating resistor
Bus segment 1
Terminating resistor
Bus segment
on
Terminating resistor
Terminating resistor
Bus segment 2
on
Segment 1
Segment 2
Figure 5-3Connecting Two Bus Segments to the RS-485 Repeater
Segment 1 Terminated, Segment 2 Connected Through
Figure 5-4 shows the connection between two segments via an RS-485 repeater
with one segment connected through:
R
Segment 1
Segment 2
Terminating resistor
Bus segment 2
off!
Terminating resistor
Bus segment 2
off!
Terminating resistor
Bus segment 1
Terminating resistor
Bus segment
on
Terminating resistor
Bus segment 1
Terminating resistor
Bus segment
on
Terminating resistor
Bus segment 1
Terminating resistor
Bus segment
on
Segment 1
Segment 2
Figure 5-4Connecting Two Bus Segments to the RS-485 Repeater
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Segments 1 and 2 Connected Through
Figure 5-5 shows the connection between two segments via an RS-485 repeater
with each LAN cable connected through:
R
Segment 1
Segment 2
Terminating resistor
off!
Terminating resistor
Bus segment 1
off!
Terminating resistor
Bus segment 2
off!
Terminating resistor
Bus segment 2
off!
Segment 1
Segment 2
Figure 5-5Connecting Two Bus Segments to the RS-485 Repeater
Note
If you turn off the power supply of a complete segment, the terminating resistors of
the connected nodes are also without power supply. This can lead to disruptions or
undefined signal states in this segment that are not recognized by the repeater
and can then lead to problems in the other segment.
Whenever possible, we recommend the following procedure:
SAlternative 1:
Disconnect the two segments before turning off the power supply using switch
5 (Table “Description and Functions of the RS-485 Repeater”) on the repeater
(set to “OFF”).
SAlternative 2:
Connect the repeater to the power supply of the segment to be turned off so
that the repeater is also turned off. In this case, make sure that the repeater is
not at the end of the previous segment, since the repeater is then the
terminating resistor which has no effect if there is no power supply. If this
solution is required, use a PROFIBUS terminator with a permanent power
supply after the repeater.
SAlternative 3:
If you want the repeater to retain its power supply, use PROFIBUS terminators
to terminate the segment you want to turn off since these also require a
permanent power supply. You require one terminator if the bus segment to be
turned off ends at the repeater, otherwise you require two terminators.
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5.3 Installing and Uninstalling the RS-485 Repeater
Overview
You can install the RS-485 repeater as follows:
SOn an S7-300 rail
or
SOn a standard rail (order number 6ES5 710-8MA..)
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Installation on an S7-300 Rail
To install the RS-485 repeater on an S7-300 rail, the catch on the rear of the
RS-485 repeater must first be removed (see Figure 5-6):
1. Insert a screwdriver below the tongue of the catch (1) and
2. Push the screwdriver towards the rear of the module (2). Hold the screwdriver
in this position!
Result: The catch is released from the RS- 485 repeater.
3. With your free hand lift the catch up as far as it will go and then remove the
catch (3).
Result: The catch is removed from the RS-485 repeater.
4. Fit the RS-485 repeater onto the rail for an S7-300 (4).
5. Push it towards the back as far as it will go (5).
6. Tighten the securing screw with a torque of 80 to 110 Ncm (6).
4
5
6
3
1
2
Rear view: Front view:
80 to 110 Ncm
Figure 5-6 Installing the RS-485 Repeater on an S7-300 Rail
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Removing the Repeater from an S7-300 Rail
To remove the RS-485 repeater from the S7-300 rail:
1. Undo the screw securing the RS-485 repeater (1) and
2. Pull the RS-485 repeater out and up (2).
2
1
Figure 5-7 Removing the RS-485 Repeater from the S7-300 Rail
Installation on a Standard Rail
To be able to install the repeater on a standard rail, the catch must be present on
the back of the RS-485 repeater:
1. Fit the RS-485 repeater on to the standard rail from above and
2. Push it towards the back until the catch locks it in place.
Removing the RS-485 from the Standard Rail
To remove the RS-485 repeater from the standard rail:
1. Press down the catch on the bottom of the RS-485 repeater using a screwdriver
and
2. Pull the RS-485 repeater out and upwards to remove it from the standard rail.
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5.4 Ungrounded Operation of the RS-485 Repeater
Ungrounded Operation
Ungrounded operation means that chassis and PE are not connected.
The ungrounded operation of the RS-485 repeater allows you to operate
electrically isolated bus segments.
Figure 5-8 shows the change in the potentials resulting from using the RS 485
repeater.
Signals
ungrounded
Signals grounded
Figure 5-8 Ungrounded Operation of Bus Segments
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5.5 Connecting the Power Supply
Cable Type
To connect the 24 V power supply, use flexible cables with a cross section of 0.25
mm2 to 2.5 mm2 (AWG 26 to 14).
Connecting the Power Supply
To connect the power supply of the RS-485 repeater:
1. Strip the insulation from the wire for the 24 V DC power supply.
2. Connect the cable to terminals “L+”, ”M” and “PE”.
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5.6 Connecting the LAN Cable
All the LAN cables described in Chapter 4 are suitable for attachment to the
RS-485 repeater.
Connecting the PROFIBUS Cable
Connect the PROFIBUS LAN cable to the RS-485 repeater, as follows:
1. Cut the PROFIBUS cable to the required length.
2. Strip the insulation from the PROFIBUS cable as shown in Figure 5-9.
The braid shield must be folded back on to the cable. Only then can the shield
clamp serve as strain relief and as the shield contact.
ÎÎÎ
ÎÎÎ
8,5 16 10
ÎÎÎ
ÎÎÎ
8,5
16 1016
Braid shield must be folded back!
e.g. standard cable
6XV1 830-0EH10
e.g. underground cable
6XV1 830-3FH10
Figure 5-9 Stripping the Cable to Connect it to the RS-485 Repeater
3. Connect the PROFIBUS cable to the RS-485 repeater:
Connect the same wires (green/red for the PROFIBUS LAN cable) to the same
terminal A or B (in other words always connect terminal A with a green wire and
terminal B with a red wire or vice versa).
4. Tighten the shield clamps so that the shield makes good contact with the clamp.
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5.7 PROFIBUS Terminator
What is a PROFIBUS Terminator?
The PROFIBUS terminator provides active termination for the bus. The major
advantage of this is that bus nodes can be turned off, removed, or replaced without
impairing data transfer. This applies in particular to the nodes at both ends of the
LAN cable on which the terminating resistors would have to be activated and
supplied with power. The PROFIBUS terminator can be installed on a standard rail.
Order number
6ES7 972-0DA00-0AA0
Design of the PROFIBUS Terminator
Table 5-4 shows the design of the PROFIBUS terminator:
Table 5-4 Design of the PROFIBUS Terminator
Design of the PROFIBUS Terminator No. Function
SIEMENS ÀLED 24 V power supply
PROFIBUS
TERMINATOR ÁConnection for power supply 24 V DC
1DC
24 V ÂPROFIBUS attachment
23
4
L+ M PE A1 B1
6
ÃShield clamp grounding the braid shield and for
strain relief of the LAN cable
6
ÄGround screw
6ES7 972-0DA00-0AA0
5
ÅCable clamp for strain relief of the power supply
cable
Active Components for RS-485 Networks
5-16 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Technical Specifications
Table 5-5 lists the technical data of the PROFIBUS terminator:
Table 5-5 Technical Specifications of the PROFIBUS Terminator
Technical Specifications
Power supply
SRated voltage 24 V DC
SRipple (static limit) 20.4 V DC to 28.8 V DC
Power consumption at rated voltage max. 25 mA
Electrical isolation yes, 600 V DC
Transmission rate 9.6 Kbps to 12 Mbps
Degree of protection IP20
Permitted ambient temperatures 0° C to 60° C
Storage temperature – 40° C to +70° C
Connectable cables; power supply
SFlexible cables
–With wire-end ferrule
–Without wire-end ferrule
SSolid cables
Screw mechanism;
0.25 mm2 to 1.5 mm2
0.14 mm2 to 2.5 mm2
0.14 mm2 to 2.5 mm2
Connectable cables; PROFIBUS Screw mechanism; all
SIMATIC NET PROFIBUS cables
Dimensions W H D (in mm) 60 70 43
Weight (including packing) 95 g
Active Components for RS-485 Networks
5-17
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Connecting the PROFIBUS Cable
Connect the PROFIBUS LAN cable to the PROFIBUS terminator, as follows:
1. Cut the PROFIBUS cable to the required length.
2. Strip the insulation from the PROFIBUS cable as shown in Figure 5-10.
The braid shield must be folded back on to the cable. Only then can the shield
clamp serve as strain relief and as the shield contact.
ÎÎÎ
ÎÎÎ
ÎÎÎ
8,5 16 10
ÎÎÎ
ÎÎÎ
8,5
16 1016
Braid shield must be folded back!
e.g. standard cable
6XV1 830-0EH10
e.g. underground cable
6XV1 830-3FH10
Figure 5-10 Stripping the Insulation to Connect to the PROFIBUS Terminator
3. Connect the PROFIBUS LAN cable to the PROFIBUS terminator:
Connect the same wires (green/red for the PROFIBUS LAN cable) to the same
terminal A or B (in other words always connect terminal A with a green wire and
terminal B with a red wire or vice versa).
4. Tighten the shield clamps so that the shield makes good contact with the clamp.
Note
When installing the segment, make sure that no terminating resistor is activated
on the bus connectors if the two PROFIBUS terminators are included in the
PROFIBUS segment.
Active Components for RS-485 Networks
5-18 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
6-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Passive Components for PROFIBUS-PA 6
Passive Components for PROFIBUS-PA
6-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
6.1 FC Process Cable
Cores, solid copper
Filler
PVC outer sheath
Copper braid shield
Cellular PE insulation
Plastic foil
Figure 6-1 Cross-Section of the FC LAN Cable for PROFIBUS-PA
FC LAN Cables for PROFIBUS-PA 6XV1 830–5EH10 and 6XV1 830–5FH10
The LAN cables 6XV1 830–5EH10 (blue sheath) and 6XV1 830–5FH10 (black
sheath) are standard cables for PROFIBUS-PA networks. They can be used
generally for all systems using the transmission technique complying with IEC
61158-2, for example, Foundation Fieldbus and PROFIBUS-PA. They meet the
requirements of cable type A complying with IEC 61158-2 (see also Chapter 4).
The combination of twisted pairs and braid shield make the cables particularly
suitable for industrial environments subject to electromagnetic interference. The
design of the cable also guarantees stable electrical and mechanical properties
after the cable has been installed.
The structure of the cable allows the use of the FastConnect (FC) stripping tool for
fast stripping of the outer sheath. (See Section 4.2.3)
Properties
SFlame-retardant
SSelf-extinguishing in case of fire
SResistant to UV radiation
SConditionally resistant to mineral oil and greases
SThe FC Process Cable corresponds to the FISCO model
Uses
The LAN cable is intended for bus connections using the IEC 61158-2 /5/
transmission technique. It is intended for fixed installation indoors and outdoors.
Passive Components for PROFIBUS-PA
6-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
6.2 SpliTConnect Tap
Uses
The SpliTConnect tap allows a PROFIBUS-PA bus segment complying with IEC
61158-2 to be implemented with DTE attachment points. Using the SpliTConnect
coupler, it is possible to cascade SpliTConnect Taps to create a PROFIBUS-PA
distributor. By replacing the contact screw with the SpliTConnect terminator, the
SpliTConnect tap can be used as a bus terminating resistor.
Figure 6-2 PROFIBUS SpliTConnect
Tap Figure 6-3 SpliTConnect Coupler
Figure 6-4 SpliTConnect Terminator Figure 6-5 SpliTConnect M12
Outlet
Design
The SpliTConnect tap has a sturdy plastic casing of PBT
(polybuthylene–terephthalate) complying with IP67 and is suitable for mounting on
a rail or wall. The integrated metal casing ensures complete shielding. In
conjunction with the FastConnect LAN cable for IEC 61158-2, the SpliTConnect
tap represents a simple cable attachment that can be installed quickly.
FastConnect LAN cables for IEC 61158-2 are contacted and connected using
insulation displacement terminals with contact screws. It is also possible to ground
the SpliTConnect tap using the contact screw.
Passive Components for PROFIBUS-PA
6-4 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
How the SpliTConnect Tap Works
The SpliTConnect Tap is used to install a PROFIBUS-PA bus segment complying
with IEC 61158-2 /5/ with DTE attachment points. The FastConnect attachment
system (FastConnect stripping tool, FastConnect LAN cable for IEC 61158-2)
allows straightforward assembly of cables. DTEs can be attached directly via the
FastConnect LAN cable for IEC 61158-2 or via the SpliTConnect M12 outlet.
Table 6-1 Ordering Data:
Ordering Data: Order no.
SpliTConnect Tap
for implementing PROFIBUS-PA segments and
attaching PA field devices, insulation
displacement terminals, IP 67
Consignment: pack of 10
6GK1 905-0AA00
SpliTConnect M12 Outlet
element for direct attachment of PROFIBUS-PA
field devices to the SpliTConnect tap via the
M12 connector
Consignment: pack of 5
6GK1 905-0AB00
SpliTConnect Coupler
connection element for cascading
SpliTConnect taps to create star hubs
Consignment: pack of 10
6GK1 905-0AC00
SpliTConnect Terminator (Ex)
for terminating PROFIBUS-PA segments, can
be used in hazardous areas
Consignment: pack of 5
6GK1 905-0AD00
SpliTConnect Terminator (not Ex)
for connecting PROFIBUS-PA segments,
cannot be used in hazardous areas
Consignment: pack of 5
6GK1 905-0AE00
SIMATIC NET
Produktinformation
Product Information
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instructions for SIMATIC NET PROFIBUS SpliTConnect System
© SIEMENS AG 1999
Änderungen vorbehalten
Subject to change 039 242-001-03-1099
Printed in Federal Republic of Germany
Stand / Dated / 10.99
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System
Copyright © 1999 Siemens AG
Wir haben den Inhalt der Druckschrift auf Übereinstimmung
mit dem beschriebenen SpliTConnect System geprüft. Dennoch
können Abweichungen nicht ausgeschlossen werden, so daß
wir für die vollständige Übereinstimmung keine Gewähr über-
nehmen. Die Angaben in der Druckschrift werden jedoch regel-
mäßig überprüft. Notwendige Korrekturen sind in den nach-
folgenden Auflagen enthalten. Für Verbesserungsvorschläge
sind wir dankbar.
Technische Änderungen vorbehalten.
Weitergabe sowie Vervielfältigung dieser Unterlage, Verwertung
und Mitteilung ihres Inhalts nicht gestattet, soweit nicht aus-
drücklich zugestanden. Zuwiderhandlungen verpflichten zu
Schadenersatz. Alle Rechte vorbehalten, insbesondere für den
Fall der Patenterteilung oder GM-Eintragung.
Copyright © Siemens AG 1999
All Rights Reserved
Wichtiger Hinweis
Wir weisen darauf hin, daß der Inhalt dieser Betriebsanleitung
nicht Teil einer früheren oder bestehenden Vereinbarung, Zu-
sage oder eines Rechtsverhältnisses ist oder diese abändern
soll. Sämtliche Verpflichtungen von Siemens ergeben sich aus
dem jeweiligen Kaufvertrag, der auch die vollständige und
allein gültige Gewährleistungsregel enthält. Diese vertraglichen
Gewährleistungsbestimmungen werden durch die Ausführungen
dieser Betriebsanleitung weder erweitert noch beschränkt.
Wir weisen außerdem darauf hin, daß aus Gründen der Über-
sichtlichkeit in dieser Betriebsanleitung nicht jede nur erdenk-
liche Problemstellung im Zusammenhang mit dem Einsatz
dieses Systems beschrieben werden kann. Sollten Sie weitere
Informationen benötigen oder sollten besondere Probleme auf-
treten, die in der Betriebsanleitung nicht ausführlich genug be-
handelt werden, können Sie die erforderliche Auskunft über die
örtliche Siemens-Niederlassung anfordern.
WARNUNG!
– Das in der Anleitung beschriebene SpliTConnect Tap System ist nur für die Verwendung mit PROFIBUS FC Process Cable
bestimmt. Bei anderweitiger Verwendung kann es zu Unfällen oder zur Zerstörung des SpliTConnect Systems und der Leitung
kommen.
– Die Montage von Komponenten des SpliTConnect Tap Systems darf nur an Bussegmenten erfolgen, die nicht in Betrieb sind.
Anforderung an die Qualifikation des Personals
Qualifiziertes Personal im Sinne dieser Betriebsanleitung bzw. der Warnhinweise sind Personen, die mit Aufstellung, Montage,
Inbetriebsetzung und Betrieb dieses Produktes vertraut sind und über die ihrer Tätigkeit entsprechenden Qualifikation verfügen
und in erster Hilfe geschult sind.
We have checked the contents of this manual for agreement
with this SpliTConnect System described. Since deviations
cannot be precluded entirely, we cannot guarantee full agree-
ment. However, the data in this manual are reviewed regularly
and any necessary corrections included in subsequent editions.
Suggestions for improvement are welcome.
Technical data subject to change.
The reproduction, transmission or use of this document or its
contents is not permitted without express written authority.
Offenders will be liable for damages. All rights, including rights
created by patent grant or registration of a utility or design, are
reserved.
Copyright © Siemens AG 1999
All Rights Reserved
Note
We would point out that the contents of this product documen-
tation shall not become a part of or modify any prior or existing
agreement, commitment or legal relationship. The Purchase
Agreement contains the complete and exclusive obligations of
Siemens. Any statements contained in this documentation do
not create new warranties or restrict the existing warranty.
We would further point out that, for reasons of clarity, these
operating instructions cannot deal with every possible problem
arising from the use of this system. Should you require further
information or if any special problems arise which are not
sufficiently dealt with in the operating instructions, please
contact your local Siemens representative.
WARNING!
– The SpliTConnect Tap System described in this Mounting Instructions is intended only for use with PROFIBUS FC Process
Cable. Using the system for any other purpose can lead to injury or to damage of the SpliTConnect System or the cable.
– Mounting of SpliTConnect System components only may be done with bus segments which are not in operation.
Personnel qualification requirements
Qualified personnel as referred to in the operating instructions or in the warning notes are defined as persons who are familiar with
the installation, assembly, startup and operation of this product and who possess the relevant qualifications for their work and have
a First Aid qualification.
Montage/Mounting SpliTConnect Tap Bestell-Nummer/Ord. code 6GK1905-0AA00
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System
Copyright © 1999 Siemens AG
1) siehe Montageanleitung des
FastConnect Stripping Tool
See Mounting Instructions of the
FastConnect Stripping Tool
1. Kontaktierelement (2) losschrauben und von
SpliTConnect Tap (1) abziehen.
Screw off contacting element (2) and remove it
from the SpliTConnect Tap (1).
2. Leitung mit FastConnect Stripping Tool 1)
abisolieren.
Strip off cable by using the FastConnect Stripping
Tool 1).
3. Mutter (3), Dichtung (4) und Schirmkontaktier-
element (5) auf die Leitung schieben.
Achtung! Metallseite (M) des Schirmkontaktierele-
mentes (5) muß in Richtung Litzenhalter (6) zeigen.
Assemble cable with nut (3), seal (4) and shield
contacting element (5).
Attention! Metal side (M) of the shield contacting
element (5) must point to the strand holder (6).
4. Litzenhalter (6) auf die nicht abisolierten Litzen
aufstecken.
Achtung! Farbcodierung beachten.
Insert the strand holder (6) onto the not stripped
off strands.
Attention! Follow the colour coding.
5. Bestückte Leitung in den SpliTConnect Tap (1) ein-
führen, dabei Kodierung (K) beachten.
Insert the assembled cable into the SpliTConnect
Tap (1) and pay attention to the coding (K) in doing so.
3 4 5 66
M
1
K
2
1
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System
Copyright © 1999 Siemens AG
Montage/Mounting SpliTConnect Tap
7. Montageschritte 2 bis 6 für die zwei anderen
Leitungsabgänge durchführen, dabei jeweils
Kodierung (K) beachten.
Repeat assembling steps 2 to 6 for the remaining
cable ports and pay attention to the codings (K)
by doing so.
8. Kontaktierelement (2) in SpliTConnect Tap (1) ein-
führen; Ausrichtung ist durch Nut (N) und Führung
im Kontaktierelement (2) vorgegeben.
Achtung! Alle 3 Abgänge müssen korrekt bestückt
sein.
Insert contacting element (2) into SpliTConnect Tap
(1). Alignment is given by groove (N) and slot in the
contacting element (2).
Attention! All 3 ports have to be mountet correctly.
Erdung
Bei Bedarf kann das SpliTConnect Tap geerdet werden. Hierzu steht am Kontakierelement (2) ein M4 Gewinde
zur Verfügung. Es wird empfohlen einen Kabelschuh zu verwenden.
Grounding
If neccessary the SpliTConnect Tap can be grounded. For this purpose a M4 thread at the contacting element (2)
is available. It is recommended to use a thimble.
9. Kontaktierelement (2) bis auf Anschlag anziehen.
Zur Unterstützung kann ein Schraubendreher durch
die dafür vorgesehene Öffnung im Kontaktier-
element (2) gesteckt werden.
Tighten contacting element (2) as much as possible.
For supporting this, a screw driver can be used
by inserting in the provided hole of the contacting
element (2).
6. Mutter (3) bis zum Anschlag anziehen.
Tighten nut (3) as much as possible.
3
K
K
2
N
1
2
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System
Copyright © 1999 Siemens AG
Montage nicht benutzter Ausgänge/Mounting of not used ports
Montage auf Fläche oder Hutschiene/Mounting on a flat surface or on a hat rail
Zur Montage auf einer ebenen Fläche oder auf
einer Hutschiene den fertig montierten SpliTConnect
Tap (1) auf den SpliTConnect Clip (8) aufstecken.
For mounting on a flat surface or on a hat rail
insert the completely assembled SpliTConnect Tap (1)
into the SpliTConnect Clip (8).
Hinweis
Der SpliTConnect Tap dient nicht als Zugentlastung
für die PROFIBUS-Leitung.
Die Leitung muß daher zugentlastet angebracht
werden!
Note
The SpliTConnect Tap is not a strain relieve for the
PROFIBUS cable.
Therefore the cable has to be mounted strain relieved.
Ein nicht benutzter Ausgang wird mit Mutter (3),
Dichtung (4), Dichtscheibe (7), Schirmkontaktier-
element (5) und Litzenhalter (6) abgeschlossen
(Reihenfolge beachten).
A not used port can be closed with nut (3), seal (4),
sealing disk (7), shield contacting element (5) and
strand holder (6). Pay attention to the order!
34756
8
1
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System
Copyright © 1999 Siemens AG
Typ/Type Beschreibung/Description Bestell-Nummer/Ord. code
SpliTConnect Coupler Zur Kopplung zweier oder mehrerer 6GK1905-0AC00
SpliTConnect Tap
For coupling of two or more
SpliTConnect Tap
Montage/Mounting
Zubehör (nicht im Lieferumfang enthalten)/Accessoires (not included in scope of delivery)
1. SpliTConnect Coupler (8) auf einen freien Leitungs-
abgang eines SpliTConnect Tap (1) aufschrauben.
Srew the SpliTConnect Coupler (8) onto a free port
of the SpliTConnect Tap (1).
2. SpliTConnect Coupler (8) auf einen freien Leitungs-
abgang eines zweiten SpliTConnect Tap (1) auf-
schrauben. Kontaktierelemente (2) auf die komplett
bestückten SpliTConnect Tap aufschrauben.
Srew the SpliTConnect Coupler (8) onto a free port
of a second SpliTConnect Tap (1). Screw contac-
ting element (2) onto the completely assembled
SpliTConnect Tap.
Typ/Type Beschreibung/Description Bestell-Nummer/Ord. code
SpliTConnect M12 Outlet Abgang mit M12 Buchse. 6GK1905-0AB00
Verwendung anstelle des Abgangs
für Leitungsanschluss.
Port with M12 socket.
To be used instead of the port for
cable connection.
Montage/Mounting
1. SpliTConnect M12 Outlet (9) auf einen freien
Leitungsabgang eines SpliTConnect Tap (1) auf-
schrauben.
Screw the SpliTConnect M12 Outlet (9) onto a free
port of the SpliTConnect (1).
2. Kontaktierelement (2) auf den komplett be-
stückten SpliTConnect Tap (1) aufschrauben.
Screw contacting element (2) onto the completely
assembled SpliTConnect Tap (1).
1 8
9
1
1
8 2
2
1
2
n.c.
Signal A
PIN 3
Signal B
PIN 1
Schirm
Shield
PIN 4
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System
Copyright © 1999 Siemens AG
Typ/Type Beschreibung/Description Bestell-Nummer/Ord. code
FastConnect Stripping Tool Werkzeug zum einfachen und 6GK1905-6AA00
schnellen Abisolieren des
PROFIBUS FC Process Cable 1).
Tool for simple and fast insulation
of the PROFIBUS FC Process
Cable 1).
1) siehe Montageschritt 2
see mounting step 2
Typ/Type Beschreibung/Description Bestell-Nummer/Ord. code
SpliTConnect Terminator Zum elektrischen Abschluß eines 6GK1905-0AE00
SpliTConnect Terminator Ex Bussegments. 6GK1905-0AD00
For electrical termination of a
bus segment.
Montage / Mounting
SpliTConnect Terminator (Ex) (10) in SpliTConnect
Tap (1) einführen. Ausrichtung ist durch Nut (N) und
Führung im SpliTConnect Terminator (Ex) (10) vorge-
geben. Achtung! Alle 3 Abgänge müssen korrekt
bestückt sein.
SpliTConnect Terminator (Ex) (10) bis auf Anschlag
anziehen. Zur Unterstützung kann ein Schrauben-
dreher durch die dafür vorgesehene Öffnung im
SpliTConnect Terminator (Ex) (10) gesteckt werden.
Insert SpliTConnect Terminator (Ex) (10) into SpliT-
Connect Tap (1). Alignment is given by groove (N) and
slot in the SpliTConnect Terminator (Ex) (10).
Attention! All 3 ports have to be mountet correctly.
Tighten SpliTConnect Terminator (Ex) (10) as much
as possible. For supporting this, a screw driver can
be used by inserting in the provided hole of the
contacting element (2).
SpliTConnect Terminator Ex
– Zum Einsatz in For use in
II 1G EEx ia IIC T6
– Zert. Nr. Cert.No.: DMT 99 ATEX E 054
– TUmax – 20 °C … +50 °C
Umax 15 V
Imax 128 mA
– Parameter gemäß EN 50020, FISCO-Modell
Parameter according EN 50020, FISCO model
N10
1
Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System
Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System
Copyright © 1999 Siemens AG
Technische Daten /Technical Data
Elektrische Daten/Electrical data gemäß PROFIBUS-Spezifikation; IEC 61158-2/
according PROFIBUS specification, IEC 61158-2
Schutzart/Protection class IP 67 1)
Kontaktierhäufigkeit/ 4 mal 2)/ 4 times 2)
Contacting amount
1) nur wenn alle Abgänge ordnungsgemäß bestückt sind
only if all user ports are mounted correctly
2) wenn erneut kontakiert wird, muß die Leitung unbedingt neu abgesetzt werden
if cable is connected again, it has to be stripped off new
Lieferumfang SpliTConnect Tap/Scope of delivery SpliTConnect Tap
1 x SpliTConnect Tap
1 x Kontaktierelement / Contacting element
3 x Mutter M22 / Nut M22
3 x Dichtung / Seal
3 x Schirmkontaktierungselement / Shield contacting element
3 x Litzenhalter / Strand holder
3 x Dichtscheibe / Sealing disk
1 x SpliTConnect Clip
7-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Passive Components for Electrical
Networks 7
Passive Components for Electrical Networks
7-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
7.1 Fiber-Optic Cables
Fiber-Optic Cable (FO)
On fiber-optic cables (FO) data is transmitted by modulating electromagnetic
waves in the range of visible and invisible light. The materials used are high-quality
plastic and glass fibers.
This chapter describes only the fiber-optic cables from the SIMATIC NET range
intended for PROFIBUS. The various types of fiber-optic cable allow components
to be connected together in a way suitable for the operating and environmental
conditions.
Compared with electrical cables, fiber-optic cables have the following advantages:
Advantages
SElectrical isolation of nodes and segments
SNo potential equalization currents
STransmission path immune to external noise
SNo lightning protection required
SNo noise emission along the transmission path
SLight weight
SDepending on the fiber type, cables several kilometers long can be used even
at higher transmission rates.
SThe transmission rate does not affect the maximum permitted cable length
Point-to-Point Link
For technological reasons, only point-to-point connections are possible with
fiber-optic cables; in other words, one transmitter is connected to one receiver. For
duplex transmission between two nodes, two fibers are therefore necessary (one
for each transmission direction).
With the optical components for PROFIBUS, bus, star and ring structures can be
implemented.
Passive Components for Electrical Networks
7-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
7.2 Plastic Fiber-Optic Cables
Plastic Fiber-Optic Cables
Plastic FO cables are used to connect optical link modules with attachments for
plastic FO cables (OLM/P), optical bus terminals (OBT) and devices with an
integrated optical interface. Under certain circumstances, this is a cost-effective
alternative to traditional glass fiber-optic cables.
Properties of Fiber-Optic Cables
Use the Siemens plastic and PCF FO cables with the following properties:
Table 7-1 Properties of Fiber-Optic Cables
Meaning SIMATIC NET PROFIBUS
Plastic Fiber Optic
Duplex Cord Plastic Fiber Optic,
Standard Cable PCF Fiber Optic,
Standard Cable
Standard designation I–VY2P 980/1000
150A I–VY4Y2P 980/1000
160A I–VY2K 200/230
10A17+8B20
Uses Used indoors in areas
where little
mechanical load is
expected, such as in
laboratory setups or
in cubicles
Used indoors Used indoors
Cable length between
SOLM – OLM
SIntegrated optical
interfaces, OBT
50 m
50 m 80 m
50 m 400 m
300 m
Fiber type Step index
Core diameter 980 µm 200 µm
Core material Polymethylmethacrylate (PMMA) Quartz glass
Cladding outer diameter 1000 µm 230 µm
Cladding material fluoridated special polymer
Inner jacket
SMaterial
SColor
SDiameter
PVC
gray
2.2 " 0.01 mm
PA
black and orange
2.2 " 0.01 mm
–
(without inner jacket)
Outer jacket
SMaterial
SColor – PVC
lilac PVC
lilac
Number of fibers 2
Passive Components for Electrical Networks
7-4 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Table 7-1 Properties of Fiber-Optic Cables, continued
Meaning SIMATIC NET PROFIBUSMeaning
PCF Fiber Optic,
Standard Cable
Plastic Fiber Optic,
Standard Cable
Plastic Fiber Optic
Duplex Cord
Attenuation at
Wavelength
v 230 dB/km
660 nm
v 10 dB/km
660 nm
Strain relief –Kevlar fibers Kevlar fibers
Max. tensile strain
Sbrief
S permanent
v 50 N
not suitable for
permanent tensile
strain
v 100 N
not suitable for
permanent tensile
strain
v 500 N
v 100 N
(only on strain relief,
v50 N on connector or
cord)
Transverse compressive
strength per 10 cm length
(brief)
v 35 N/ 10 cm v 100 N/ 10 cm v 750 N/ 10 cm
Bending Radius
Ssingle bend
(without tensile strain)
Smultiple bending
(with tensile strain)
w 30 mm
w 50 mm
(only the flat surface)
w 100 mm
w 150 mm
w 75 mm
w 75 mm
Permitted ambient conditions
STransport/
storage temperature
STemperature for
installation
SOperating temperature
–30 _C to +70 _C
0 _C to +50 _C
–30 _C to +70 _C
–30 _C to +70 _C
0 _C to +50 _C
–30 _C to +70 _C
–30 _C to +70 _C
–5 _C to +50 _C
–20 _C to +70 _C
Resistant to
SMineral oil ASTM no. 2,
greases or water
SUV radiation
conditionally1
not UV resistant
conditionally1
conditionally1
conditionally1
conditionally1
Behavior in fire Flame-resistant acc. to flame test VW–1 to UL 1581
Outer dimensions 2.2 4.4 mm
" 0.01 mm Diameter
7.8 " 0.3 mm Diameter
4.7 " 0.3 mm
Weight 7.8 kg/km 65 kg/km 22 kg/km
1For special applications, contact your Siemens representative.
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7.2.1 Plastic Fiber Optic, Duplex Cord
Core
Cladding
Jacket (buffer)
0.98mm
1 mm
2.2 mm
4.4 mm
Figure 7-1 Structure of the Plastic FO Cable, Duplex Cord 6XV1821–2AN50
Plastic FO Cable, Duplex Cord 6XV1821–2AN50
The plastic FO cable, duplex cord 6XV1821–2AN50 is a flat, double-fiber cable
with PVC inner jacket without an outer jacket. The jacket color is gray and no
labeling is printed on it. The standard code is I-VY2P 980/1000 150.
The cable is easy to assembly on-site. The cable is fitted with 2 x 2 simplex
connectors for devices with integrated optical interfaces. The cable must be fitted
with 2 x 2 BFOC connectors when connecting OLM/P11 and OLM/P12.
Properties
The plastic FO, duplex cord 6XV1821-2AN50 is
Snot suitable for permanent tensile strain
Sconditionally resistant to mineral oil ASTM no. 2
Sconditionally resistant to greases
Sconditionally resistant to water
Snot UV resistant
Sflame-resistant acc. to flame test VW-1 to UL 1581
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Uses
The plastic FO cable, duplex cord 6XV1821-2AN50 is intended for applications
indoors in areas with where it is subjected to little mechanical load, such as in
laboratories or within cubicles. The cable is supplied in 50 m rings. Both with OLM
connections and with integrated optical interfaces, connections up to 50 m in
length can be spanned between two nodes with this cable.
Table 7-2 Order Numbers of the Plastic FO Cable, Duplex Cord 6XV1821-2AN50
Fiber-Optic Cables Version Order Number
SIMATIC NET PROFIBUS Plastic Fiber Optic, Duplex Cord
I–VY2P 980/1000 150A
Plastic FO cable with two fibers, PCV jacket, without connector,
for use in areas where it is not subjected to mechanical load (for
example within a cubicle or in laboratories)
50 m ring 6XV1821-2AN50
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7.2.2 Plastic Fiber-Optic, Standard Cables
PVC outer jacket
Kevlar strain relief
Protective foil
Polyamide jacket
FO fibers
Figure 7-2 Structure of the Plastic Fiber-Optic Standard Cable
Plastic FO Cable, Standard Cable 6XV1821-0A***
The plastic FO cable, standard cable 6XV1821-0A*** consists of two plastic fibers
with a robust polyamide inner jacket surrounded by Kevlar strain relief elements
and a lilac PVC outer jacket. The standard code is I-VY4Y2P 980/1000 160A. The
outer jacket has the identifier “SIEMENS SIMATIC NET PLASTIC FIBER OPTIC
6XV1821-0AH10 (UL)” printed on it as well as meter markers.
The cable is easy to assembly on-site. The cable is fitted with 2 x 2 simplex
connectors for devices with an integrated optical interface. The cable must be fitted
with 2 x 2 BFOC connectors when connecting OLM/P11 and OLM/P12. It can also
be ordered preassembled.
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Properties
The plastic FO cable, standard cable 6XV1821-0A*** is
Snot suitable for permanent tensile strain
Sconditionally resistant to mineral oil ASTM no. 2
Sconditionally resistant to greases
Sconditionally resistant to water
Sconditionally UV resistant
Sflame-resistant acc. to flame test VW-1 to UL 1581
Uses
The plastic FO cable, standard cable 6XV1821-0A*** is a robust round cable for
indoor applications. The maximum distance that can be spanned is 80 m for
OLM/P connections and 50 m for integrated optical interfaces and OBTs.
Table 7-3 Order Numbers of the Plastic Fiber-Optic Standard Cable
Ordering data: Plastic fiber-optic, standard cable, can be ordered in meters for OLMs, OBTs and
integrated optical interfaces.
SIMATIC NET PROFIBUS plastic fiber-optic, standard
cable
I-VY4Y2P 980/1000 160A
Robust round cable with two plastic FO fibers, PVC outer
jacket and PA inner jacket, without connectors, for use
indoors,
can be ordered in meters
50 m ring
100 m ring
6XV1821-0AH10
6VX1821-0AN50
6XV1821-0AT10
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Ordering data: Preassembled plastic fiber-optic cable, standard cable, for OLM/P
SIMATIC NET PROFIBUS plastic fiber-optic, standard
cable
I-VY4Y2P 980/1000 160A
Robust round cable with two plastic FO cords, PVC outer
jacket and PA inner jacket, for use indoors,
preassembled with 2 x 2 BFOC connectors,
outer jacket stripped over 20 cm,
for connection to OLM/P.
Standard lengths*
1 m
2 m
5 m
10 m
15 m
20 m
25 m
30 m
50 m
65 m
80 m
*other length available on request
6XV1821-0BH10
6XV1821-0BH20
6XV1821-0BH50
6XV1821-0BN10
6XV1821-0BN15
6XV1821-0BN20
6XV1821-0BN25
6XV1821-0BN30
6XV1821-0BN50
6XV1821-0BN65
6XV1821-0BN80
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7.2.3 PCF Fiber-Optic Cables
PVC outer jacket
Kevlar strain relief
PCF fibers
Figure 7-3 Structure of the PCF FO Standard Cable
PCF FO Cable, Standard Cable 6XV1821-1B***
The PCF FO cable, standard cable 6XV1821-1B*** consists of two PCF fibers
surrounded by Kevlar strain relief elements and a violet PVC outer jacket. The
standard code is I-VY2K 200/230 10A17+8B20. The outer jacket has the identifier
“SIEMENS SIMATIC NET PROFIBUS PCF FIBER OPTIC 6XV1821-1AH10 (UL)”
printed on it as well as meter markers.
The cable is only available as a preassembled cable. Cables for devices with an
integrated optical interface are fitted with 2 x 2 simplex connectors, cables for
connection of OLM/P11 and OLM/P12 have 2 x 2 BFOC connectors. The cables
are supplied with a pulling loop at one end that allows the cables to be pulled, for
example, into cable channels.
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Properties
The PCF FO standard cable is
Sdesigned for 100 N permanent tensile strain
Sconditionally resistant to mineral oil ASTM no. 2
Sconditionally resistant to greases
Sconditionally resistant to water
Sconditionally UV resistant
Sflame-resistant acc. to flame test VW-1 to UL 1581
Uses
The PCF FO standard cable 6XV1821-1B*** is a robust round cable for use
indoors with cable lengths up to 400 m (OLM) or 300 m (integrated optical
interfaces, OBT) in each case between two nodes.
Ordering data: Preassembled PCF fiber-optic cables for OLM/P
SIMATIC NET PROFIBUS PCF fiber-optic cable
I-VY2K 200/230 10A17 + 8B20
PCF FO cable with 2 cords, PVC outer jacket, for spanning
distances up to 400 m, preassembled with 2 x 2 BFOC
connectors,
outer jacket stripped over 20 cm, with a pulling loop fitted at
one end,
for connecting OLM/P.
Standard lengths*
75 m
100 m
150 m
200 m
250 m
300 m
400 m
*other lengths available on request
6XV1821-1BN75
6XV1821-1BT10
6XV1821-1BT15
6XV1821-1BT20
6XV1821-1BT25
6XV1821-1BT30
6XV1821-1BT40
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Ordering data: Preassembled PCF fiber-optic cables for integrated optical interfaces
SIMATIC NET PROFIBUS PCF fiber-optic cable
I-VY2K 200/230 10A17 + 8B20
PCF FO cable with 2 cords, PVC outer jacket, for spanning
distances up to 300 m, preassembled with 2 x 2 simplex
connectors,
outer jacket stripped over 30 cm, with pulling loop fitted at one
end,
for connecting devices with integrated optical interfaces, OBT
Standard lengths*
50 m
75 m
100 m
150 m
200 m
250 m
300 m
*other lengths available on request
6XV1821-1CN50
6XV1821-1CN75
6XV1821-1CT10
6XV1821-1CT15
6XV1821-1CT20
6XV1821-1CT25
6XV1821-1CT30
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7.3 Glass Fiber-Optic Cables
Designed for Industry
SIMATIC NET glass fiber-optic cables (FO) are available in various designs
allowing optimum adaptation to a wide range of applications.
Uses
Fiber-optic standard cable
SUniversal cable for use indoors and outdoors
INDOOR fiber-optic cable
SFree of halogens, can be walked on, and extremely flame-retardant FO cable
for use in buildings
Flexible fiber-optic trailing cable
SSpecially designed for non-stationary use, for example with moving machinery
SIENOPYR duplex marine fiber-optic cable
SHybrid cable consisting of two fibers and two additional copper wires
for fixed installation on ships and offshore facilities
SIMATIC NET Standard Fibers
In glass fiber-optic cables, SIMATIC NET uses a fiber with 62.5 µm diameter as its
standard fiber. SIMATIC NET bus components are ideally matched to these
standard fibers allowing large distances to be covered while keeping the
configuration rules simple.
Simple Configuration
All the descriptions and operating instructions for SIMATIC NET bus components
contain information about the distances that can be covered with the standard
fibers described above. You can configure your optical network without
complicated calculations using simple limit values (refer to Chapter 3 “Network
Configuration”.
Guidelines for Laying Cables
You will find information about laying SIMATIC NET glass fiber-optic cables in
Appendix C in this manual.
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Technical Specifications
Tables 7-4 and 7-5 provide an overview of the technical specifications of all
SIMATIC NET glass fiber-optic cables.
Table 7-4 Technical Specifications of the INDOOR Fiber-Optic Cable and Fiber-Optic Standard Cable
Cable Type Fiber-Optic
Standard Cable INDOOR Fiber-Optic
Cable
Areas of application Universal cable for use indoors
and outdoors Halogen-free and extremely
flame-retardant cable for indoor
use that can be walked on
Available as Preassembled cable with 4
BFOC connectors in fixed
lengths, also available in meters
Preassembled cable with 4
BFOC connectors in fixed
lengths
Cable type
(standard designation) AT-VYY 2G62.5/125
3.1B200+0.8F600 F I-VHH 2G62.5/125
3.2B200+0.9F600 F
TB3 FRNC OR
Fiber type Multimode graded fiber 62.5/125
µmMultimode graded fiber 62.5/125
µm
Power loss at 850 nm
Power loss at 1300 nm <= 3.1 dB/km
<= 0.8 dB/km <= 3.2 dB/km
<= 0.9 dB/km
Modal bandwidth
at 850 nm
at 1300 nm 200 MHz *km
600 MHz *km 200 MHz *km
600 MHz *km
Number of fibers 2 2
Cable design Splittable
outdoor cable Splittable
indoor cable
Core type Compact core Fixed core
Basic element materials PVC, gray Copolymer, orange
(FRNC)
Strain relief Aramid yarn and
impregnated glass fiber yarn Aramid yarn
Outer jacket/
color of cable PVC/black Copolymer/
bright orange (FRNC)
Dimensions of
basic element (3.5 ± 0.2) mm ∅2.9 mm ∅
Outer dimensions (6.3 x 9.8) ± 0.4 mm approx. 3.9 x 6.8 mm
Cable weight approx. 74 kg/km approx. 30 kg/km
Permitted tensile load <= 370 N (in operation)
<= 500 N (brief) <=200 N (in operation)
<= 800 N (brief)
Bending radii 100 mm
Only the flat surface 100 mm (during installation)
60 mm (in operation)
Only the flat surface
Transverse compressive strength 5,000 N/10 cm 3,000 N/10 cm (brief)
1,000 N/10 cm (permanent)
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Table 7-4 Technical Specifications of the INDOOR Fiber-Optic Cable and Fiber-Optic Standard Cable
Cable Type INDOOR Fiber-Optic
Cable
Fiber-Optic
Standard Cable
Impact strength 3 blows
(initial energy: 5 Nm
hammer radius: 300 mm)
3 blows
(initial energy: 1.5 Nm
hammer radius: 300 mm)
Installation temperature -5°C to +50°C -5°C to +50°C
Operating temperature -25°C to +60°C -20°C to +60°C
Storage temperature -25°C to +70°C -25°C to +70°C
Behavior in fire Flame retardant complying with
IEC 60332-3 cat. CF Flame retardant complying with
IEC 60332-3 and DIN VDE 0472
Part 804, test type B
Free of halogens no yes
UL approval no no
Ship building approval no no
Table 7-5 Technical Specifications of the Flexible Fiber-Optic Trailing Cable and the SIENOPYR Duplex
Fiber-Optic Marine Cable
Cable Type Flexible Fiber-Optic
Trailing Cable SIENOPYR
Duplex Fiber-Optic
Marine Cable
Areas of application Flexible cable for installation in a
drag chain indoors and outdoors Fixed installation on ships and
offshore facilities in all enclosed
spaces and on free decks
Available as Preassembled cable with 4
BFOC connectors in fixed
lengths, also available in meters
Sold in meters
Cable type
(standard designation) AT-W11Y (ZN)
11Y2G62.5/125
3,1B200+0.8F600 LG
MI-VHH 2G 62.5/125
3.1B200 + 0.8F600 +
2x1CU 300 V
Fiber type Multimode graded fiber 62.5/125
µmMultimode graded fiber 62.5/125
µm
Power loss at 850 nm
Power loss at 1300 nm <= 3.1 dB/km
<= 0.8 dB/km <= 3.1 dB/km
<= 0.8 dB/km
Modal bandwidth at 850 nm
at 1300 nm 200 MHz *km
600 MHz *km 200 MHz *km
600 MHz *km
Number of fibers 2 2
Cable design Splittable
outdoor cable Splittable
outdoor cable
Core type Hollow core, filled Solid core
Basic element materials PUR, black Polyolefin
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Table 7-5 Technical Specifications of the Flexible Fiber-Optic Trailing Cable and the SIENOPYR Duplex
Fiber-Optic Marine Cable
Cable Type SIENOPYR
Duplex Fiber-Optic
Marine Cable
Flexible Fiber-Optic
Trailing Cable
Strain relief GFK central element, Aramid
yarn Aramid yarn
Outer jacket/color of cable PUR, black SHF1 mixture/black
Dimensions Basic element (3.5 ± 0.2) mm ∅(2.9 ± 0.2) mm ∅
Outer dimensions approx. 12.9 mm (13.3 ± 0.5) mm
Cable weight approx. 136 kg/km approx. 220 kg/km
Permitted tensile load <= 2000 N (brief)
<=1000 N (permanent) <= 500 N (brief)
<= 250 N (permanent)
Bending radii 150 mm
Max. 100,000 bending cycles 133 mm (single)
266 mm (multiple)
Installation temperature -5°C to +50°C -10°C to +50°C
Operating temperature -25°C to +60°C -40°C to +80°C 1)
-40°C to +70°C 2)
Storage temperature -25°C to +70°C -40°C to +80°C
Resistance to fire Complying with IEC 60332-1 Complying with IEC 60332-3 cat.
A
Free of halogens no yes
UL approval no no
Ship building approval no yes
1) With no load on copper cores
2) With maximum load on copper cores (6 A)
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7.3.1 Fiber-Optic Standard Cable
Outer jacket black PVC
Inner jacket gray PVC
Support element (impregnated glass yarn)
Kevlar yarn
Glass fiber G62.5/125 µm
Figure 7-4 Structure of the Fiber-Optic Standard Cable
Fiber-Optic Standard Cable 6XV1820-5****
The fiber-optic standard cable contains two multimode graded fibers of type
62.5/125 µm.
The outer jacket is labeled “SIEMENS SIMATIC NET FIBER-OPTIC 6XV1
820-5AH10” approximately every 50 cm. Meter markers consisting of a vertical line
and a 4-figure number make it easier to estimate the length of an installed cable.
Properties
The fiber-optic standard cable has the following properties:
SCan be walked on
SFlame-retardant complying with IEC 60332-3 cat. CF
SNot halogen free
SAvailable in meter lengths up to 4000 m
SAvailable preassembled with 4 BFOC connectors in lengths up to 1000 m
Uses
The fiber-optic standard cable is the universal cable for use indoors and outdoors.
It is suitable for connecting optical ports operating at the wavelengths of 850 nm
and 1300 nm.
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7.3.2 INDOOR Fiber-Optic Cable
Outer jacket copolymer FRNC, bright orange
Inner jacket copolymer FRNC, gray
Aramid strain relief elements
FRNC cord sleeve
Glass fiber G62.5/125 µm
Figure 7-5 Structure of the INDOOR Fiber-Optic Cable
INDOOR Fiber-Optic Cable 6XV1820-7****
The INDOOR fiber-optic cable contains two multimode graded fibers 62.5/125 µm.
The outer jacket is labeled “SIEMENS SIMATIC NET INDOOR FIBER OPTIC
6XV1 820-7AH10 FRNC” at intervals of approximately 50 cm. Meter markers
consisting of a vertical line and a 4-figure number make it easier to estimate the
length of an installed cable.
Properties
The INDOOR fiber-optic cable has the following properties:
SCan be walked on
SFlame-retardant complying with IEC 60332-3 and DIN VDE 0472 Part 804, test
type B
SHalogen-free
SPreassembled with 4 BFOC connectors in lengths from 0.5 m to 100 m.
Uses
The INDOOR fiber-optic cable is intended for use indoors in areas protected from
the weather. It is suitable for connecting optical ports operating at the wavelengths
of 850 nm and 1300 nm.
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7.3.3 Flexible Fiber-Optic Trailing Cable
Outer jacket
Inner jacket
Support element
Aramid yarn
Glass fiber G 62.5/125 µm
Aramid yarn
Dummy element
Fleece/strands
Figure 7-6 Structure of the Flexible Fiber-Optic Trailing Cable
Flexible Fiber-Optic Trailing Cable 6XV1820-6****
The flexible fiber-optic trailing cable contains two multimode graded fibers 62.5/125
µm. Integrated dummy elements produce a round cross-section.
The outer jacket is labeled “SIEMENS SIMATIC NET FLEXIBLE FIBER OPTIC
6XV1 820-6AH10” at intervals of approximately 50 cm. Meter markers consisting of
a vertical line and a 4-figure number make it easier to estimate the length of an
installed cable.
Properties
The flexible fiber-optic trailing cable has the following properties:
SHighly flexible (100,000 bending cycles at a minimum bending radius of 150
mm)
SNot halogen free
SAvailable in meter lengths for up to 2000 m
SAvailable preassembled with 4 BFOC connectors in fixed lengths up to 650 m
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Uses
The flexible fiber-optic trailing cable was developed for applications in which the
cable must be flexible enough to move, for example when attached to moving
machine parts (drag chains). The cable is designed for 100,000 bending cycles
through ± 90° (at the specified minimum bending radius). The trailing cable can be
used both indoors and outdoors. It is suitable for connecting optical ports operating
at the wavelengths of 850 nm and 1300 nm.
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!Warning
During installation and operation, all the mechanical restrictions involving the cable
such as bending radii, tensile load etc. must be adhered to. If these limits are
exceeded, permanent deterioration of the transmission characteristics may result
that can cause temporary or permanent failure of data transmission.
Figure 7-7 Example of Using the Glass Fiber-Optic Trailing Cable in a Drag Chain
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7.3.4 SIENOPYR Duplex Fiber-Optic Marine Cable
Copper wire
Insulation
Optical fiber
Strain relief
Protective sleeve
Winding
Copper braid
Common jacket
Outer jacket
Figure 7-8 Structure of the SIENOPYR Duplex Fiber-Optic Marine Cable
SIENOPYR Duplex Fiber-Optic Marine Cable 6XV1 830–0NH10
The SIENOPYR duplex fiber-optic marine cable contains two multimode graded
fibers 62.5/125 µm. The cable also contains two stranded, rubber-insulated copper
wires with a 1 mm2 cross-sectional area. These can be used, for example, to
supply power to the attached devices.
The round cross-section of the cable makes it easier to seal cable glands.
The outer jacket is labeled with the year of manufacture and the label
“SIENOPYR-FR MI-VHH 2G 62.5/125 3,1B200+0,8F600+2x1CU 300V” at
intervals of approximately 50 cm.
Properties
The SIENOPYR duplex fiber-optic marine cable has the following properties:
SOzone proof complying with DIN VDE 0472 Part 805 test type B
SBehavior in fire complying with IEC 60332-3 cat. A
SCorrosivity of combustion gases complying with IEC 60754-2
SSmoke density complying with IEC 61034
SFree of halogens
SApproved for ship building (Germanischer Lloyd, Lloyd’s Register, Registro
Italiano Navale).
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Uses
The SIENOPYR duplex marine fiber-optic able is intended for fixed installation on
ships and offshore facilities in all enclosed spaces and on open decks. It is suitable
for connecting optical ports operating at the wavelengths of 850 nm and 1300 nm.
Ordering
Appendix I-2 lists an address from which this cable can be ordered.
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7.3.5 Special Cables
Special Cables
In addition to the SIMATIC NET standard fiber-optic cables described in the
Catalog IK 10, numerous special cables and accessories are also available. Listing
all the versions available is beyond the scope of the catalog and of this manual.
The technical specifications of the SIMATIC NET bus components indicate which
SIMATIC NET fiber-optic cable is the normal connecting cable and which other
fiber types are suitable.
Note
Remember that the distances that can be covered differ if you use fibers with other
core diameters or attenuation characteristics than those listed in the operating
instructions.
Fiber Types
In addition to the standard SIMATIC NET fiber types, the following fiber types are
often used:
S50 µm Fiber
This fiber is used particularly in Europe in Telecom applications instead of the
62.5 µm fiber. The smaller core diameter means that less power can be coupled
into the fiber and reduces the distance that can be covered.
S10 µm Fiber
This single-mode fiber is used for transmission over extremely long distances.
The use of this single-mode fiber requires special, high-quality transmitter and
receiver elements and connectors. In conjunction with OLM/G11-1300 or
OLM/G12-1300, distances up to 15 km can be spanned.
Cable Structures
For special applications, numerous variations in the cable structure are available,
for example:
SBundled cords (cables with hollow cords capable of accommodating several
fibers)
SCables with rodent protection for underground installation
SHalogen-free cables, for example for use in underground train systems
SHybrid cable with fibers and copper conductors in one jacket
SCertified cables, for example for use on ships
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Ordering
If you require fiber-optic cables for particular applications, please contact your
Siemens representative (see Appendix I-2).
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7.4 Fiber-Optic Connectors
Note
Fiber-optic connectors are impaired by dirt and mechanical damage to the end
faces.
Protect open connections with the supplied dust caps.
7.4.1 Connectors for Plastic Fiber-Optic Cables
Fitting connectors to plastic fiber-optic cables is relatively simple. The following
connectors are available:
SSimplex connector for connecting OBTs and integrated optical interfaces
SAdapter for simplex connector for integrated optical interfaces
SBFOC connector for OLM/P
7.4.2 Simplex Connector and Adapter for Devices with Integrated
Optical Interfaces
Definition
Simplex connectors are used to attach the fiber-optic cable to the integrated
fiber-optic interface of the PROFIBUS device. With certain Siemens modules (for
example IM 153-2 FO, IM 467 FO) two simplex connectors (one for the transmitter
and one for the receiver) are plugged on to the module using a special adapter.
Requirements
The PROFIBUS device must be equipped with a fiber-optic interface, such as the
ET 200S (IM151 FO) or the IM 467 FO for the S7-400.
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Design
For a fiber-optic attachment, two simplex connectors (transmitter and receiver)
and, if necessary, also an adapter with the following characteristics are required:
SDegree of protection IP 20
STransmission rates from 9.6 Kbps to 12 Mbps
Transmitter
Receiver
Fiber-Optic
Cables
Adapter
Simplex
Connectors
Figure 7-9Simplex Connector and Special Adapter Fitted Together
Order Numbers
The simplex connector and adapter can be ordered as follows:
Table 7-6 Order Numbers - Simplex Connector and Adapter
Accessories Order number
SIMATIC NET PROFIBUS plastic fiber-optic cable,
simplex connector/polishing kit
100 simplex connectors and 5 polishing kits for
assembling SIMATIC NET PROFIBUS plastic fiber-optic
cables
6GK1901-0FB00-0AA0
Adapter
Pack of fifty for assembling the simplex connectors in
conjunction with the IM 467 FO, CP 342-5 FO and the
IM 153-2 FO
6ES7195-1BE00-0XA0
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Cable Lengths
The length of the transmission path on fiber-optic cables is not dependent on the
transmission rate.
Each node on the optical PROFIBUS network has repeater functionality so that the
following distance information relates to the distance between two adjacent,
interconnected PROFIBUS nodes in a bus topology.
The maximum cable length between two PROFIBUS nodes depends on the type
of fiber-optic cable used.
Table 7-7 Permitted Cable Lengths in Networks with Integrated Optical Interfaces (Bus
Topology)
Fiber-optic cable
SIMATIC NET
PROFIBUS
Maximum cable
lengths between two
nodes (in m)
For 1 Network (= 32
nodes) (in m)
Plastic fiber-optic,
duplex cord 50 1550
Plastic fiber-optic,
standard cable 50 1550
PCF fiber-optic,
standard cable 300 9300
Table 7-8 Permitted Cable Lengths in an OLM Network
Fiber-optic cable
SIMATIC NET
PROFIBUS
Maximum cable
lengths between two
nodes (in m)
For 1 Network (= 32
nodes) (in m)
Plastic fiber-optic,
duplex cord 50 1550
Plastic fiber-optic,
standard cable 80 2480
PCF fiber-optic,
standard cable 400 12400
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Mixing Plastic Fiber-Optic and PCF Fiber-Optic
To make the best use of the different cable lengths, the plastic fiber-optic cables
and PCF fiber-optic cables can be mixed.
For example, connection between distributed local DP slaves using plastic
fiber-optic (distances t 50 m) and connection between DP master to the first DP
slave of the bus topology with PCF fiber-optic (distance u 50 m).
Installing Plastic Fiber-Optic Cables
You can assemble and install plastic fiber-optic cables simply yourself. The
paragraph below contains information about the installation instructions and the
rules for laying cables are explained in Appendix C.
Instructions for Assembling Plastic Fiber-Optic Cables
A detailed instruction manual explaining how to assemble plastic fiber-optic cables
with simplex connectors and illustrated by photographs is available from the
following sources:
SAppendix D of this manual
SOn the Internet
–German: http://www.ad.siemens.de/csi/net
–English: http://www.ad.siemens.de/csi_e/net
Select SEARCH on this Internet page, enter the number “574203” as the “Entry
ID” and start the search.
SAs a leaflet supplied with the simplex connector/polishing kit (see Table 7-6)
Title: Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber-Optic
Cables with Simplex Connectors
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7.4.3 BFOC Connectors for OLMs
The BFOC connectors allow precision fiber-optic cable connections. The
construction of the BFOC connector allows the strain relief of cables to be used.
This is necessary for installing longer fiber-optic cable connections, for example
between OLM/P modules. BFOC connectors must be ordered separately.
Ordering information and instructions on fitting the connectors can be found in
Appendix D.
Figure 7-10 BFOC Connectors with Accessories (Crimping Sleeve and Anti-Kink Sleeve),
for Plastic FO Cables
7.4.4 Connectors for Glass Fiber Cables
BFOC Connectors for Glass Fiber-Optic Cables
In PROFIBUS, only BFOC connectors are used for glass fiber-optic cables.
Figure 7-11 BFOC Connectors with Dust Caps
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Fitting Connectors On-Site
If it is necessary to fit connectors on-site,
– SIEMENS provides this service (see Appendix I-2)
– BFOC connectors and special tools can be ordered (see I-2).
Note
Connectors for glass fiber-optic cables should only be fitted by trained staff. When
fitted correctly, they allow extremely low coupling attenuation and the value can be
repeated after inserting the connector several times.
Preassembled Cables
To be able to use glass fiber-optic cables with untrained personnel, glass fiber-optic
cables are also available with four BFOC connectors already fitted.
For ordering data, please refer to the current SIMATIC NET Catalog IK 10.
Note
Fiber-optic connectors are impaired by dirt and mechanical damage to the end
faces. Protect open connections with the supplied dust caps.
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Active Components for Optical Networks 8
Active Components for Optical Networks
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8.1 Optical Bus Terminal OBT
Figure 8-1 Optical Bus Terminal
Uses
The OBT (Optical Bus Terminal) is used to attach a single PROFIBUS node
without an integrated optical interface or a PROFIBUS RS-485 segment with up to
31 nodes to the optical PROFIBUS. The OBT therefore provides the advantages
of optical data transmission for existing DP devices.
A single PROFIBUS–DP node is attached using its RS–485 port via a connecting
cable terminated at both ends, for exampledrop cable 830–1T, to the RS-485 port
of the OBT. The OBT is included in the optical bus two FO interfaces.
The following optical transmission media can be connected to an OBT:
SPlastic fiber-optic cables can be used up to a distance of 50 m. These can be
assembled extremely simply with 2 x 2 simplex connectors on site.
SPCF fiber-optic cables can be used for distances up to 300 m. These cables
must be ordered preassembled.
Design
The OBT has a compact, plastic casing. It is suitable both for mounting on a rail
and for wall mounting (two holes available for screws).
The OBT has the following connections:
S9-pin sub-D female connector for connection of a PROFIBUS RS-485 segment
with nodes such as programming devices (PG), PCs, operator panels (OP) or
nodes without an integrated optical interface, for example an ET 200B or DP
components of other manufacturers
STwo optical interfaces for attaching plastic and PCF fiber-optic cables with
simplex connectors (connection to CP 342-5 FO, IM 467 FO or ET 200 with an
integrated optical interface)2
S24 V DC power supply
2) For further information, refer to the catalog “PROFIBUS & AS-Interface”.
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Functions
SAttachment of a PROFIBUS RS-485 segment
SProvides an electrical attachment to the optical PROFIBUS (for example a PG
attachment for commissioning and diagnostics)
SSupports all PROFIBUS transmission rates from 9.6 kbps to 1.5 Mbps and 12
Mbps
SThe OBT regenerates the signals in amplitude and time.
SCascading depth when using user-defined bus parameters up to 126 nodes
SIsolation of the DP node via fiber-optic cable
SSimple diagnostics with LEDs for operating voltage and for data reception CH1,
CH2 and CH3.
Ordering Data: Order no.
PROFIBUS OBT
Optical bus terminal for attachment of a
PROFIBUS RS-485 segment to an optical bus
without simplex connector
6GK1 500-3AA00
Operating Instructions
The full Operating Instructions for Optical Bust Terminal OBT are included in the
Appendix of this manual.
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8.2 Optical Link Module OLM
Figure 8-2 Optical Link Module (OLM)
Uses
With the PROFIBUS OLM (Optical Link Module), Version 3, PROFIBUS networks
can be implemented as bus, star and redundant ring structures.
The transmission rate of a fiber-optic path is not dependent on the distance and
can range from 9.6 Kbps to 12 Mbps.
OLMs can be used in system buses based on PROFIBUS, inter-building networks
with glass fiber-optic cables, mixed networks with electrical and optical segments,
large-span networks (road tunnel, traffic control systems), networks in which high
availability is required (redundant ring networks) etc.
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Design
OLMs are available with one or two fiber-optic interfaces for different types of
fiber-optic cable:
SPlastic fiber-optic cable (980/1000 µm) can be used for distances of up to 80 m.
They can be fitted with BFOC connectors on site.
SPCF fiber-optic cables (200/230 µm) can be used for distances up to 400 m.
They are available preassembled with 4 BFOC connectors and a pulling loop.
SGlass-fiber multimode fiber-optic cable (62.5/125 µm) such as the SIMATIC
NET fiber-optic cables can be used to span distances up to 3000 m. They must
be ordered preassembled with 4 BFOC connectors and are tested before they
are supplied.
SMonomode fiber-optic cables (10/125 µm fibers) can be used for extremely long
distances of up to 15 km. These are available on request.
OLMs can be combined via an RS-485 interface and individual nodes or entire
electrical segments can be included in the PROFIBUS network.
The version 3 OLMs support all PROFIBUS transmission rates up to
12 Mbps.
They have a compact metal casing. They are suitable for installation on a DIN rail
or for fixed mounting. When installed vertically, OLMs can be placed side-by-side
needing gaps between them.
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Functions
SAutomatic detection of all PROFIBUS data rates: 9.6 Kbps to 12 Mbps including
45.45 Kbps (PROFIBUS-PA)
SImplementation of the following network topologies:
Bus, star, redundant ring
SHigh availability with redundant media. Distance between two OLMs in the
redundant ring limited only by the maximum optical distance.
SAttachment to different types of fiber-optic transmission media (one or two
optical interfaces, BFOC connectors)
SIsolated RS-485 interface with segment capability (sub-D female connector)
SUnrestricted multimaster operation:
Extended segmentation function for limiting errors to FO and RS-485
segments
SFast localization of faults:
–Display of the module status via floating signaling contact
–Testing of the FO path quality: Measuring output for optical receiver for
logging and detecting the fiber-optic signal quality with a voltmeter.
SHigh cascading depth:
Bus and redundant ring up to 122 OLMs (limited only by monitoring times)
S24 V DC power supply with redundant power supply option.
Note
The optical ports of the OLMs are optimized for greater distances. The direct
coupling of the optical ports of an OLM with an OBT or integrated optical ports is
not possible due to differences in the technical specifications.
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Ordering Data: Order no.
PROFIBUS OLM/P11
Optical Link Module with 1 x RS-485 and 1 x
plastic FO interface, with signaling contact and
measurement output
6GK1 502-2CA00
PROFIBUS OLM/P12
Optical Link Module with 1 x RS-485 and 2 x
plastic FO interfaces, with signaling contact and
measurement output
6GK1 502-3CA00
PROFIBUS OLM/G11
Optical Link Module with 1 x RS-485 and 1 x
glass FO interface, for standard distances, with
signaling contact and measurement output
6GK1 502-2CB00
PROFIBUS OLM/G12
Optical Link Module with 1 x RS-485 and 2 x
glass FO interface, for standard distances, with
signaling contact and measurement output
6GK1 502-3CB00
PROFIBUS OLM/G11-1300
Optical Link Module with 1 x RS-485 and 1 x
glass FO interface, for long distances, with
signaling contact and measurement output
6GK1 502-2CC00
PROFIBUS OLM/G12-1300
Optical Link Module with 1 x RS-485 and 2 x
glass FO interface, for long distances, with
signaling contact and measurement output
6GK1 502-3CC00
Operating Instructions
The full Operating Instructions for Optical Link Module OLM are included in the
Appendix of this manual.
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Active Components for Wireless Networks 9
Active Components for Wireless Networks
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9.1 Infrared Link Module ILM
Uses
The Infrared Link Module ILM is used for wireless PROFIBUS transmission over
short distances (≤ 15m ). With the ILM, individual nodes can be attached to a
segment or two segments can be interconnected. The ILM allows communication
between moving nodes, for example automatic trolleys or with changing nodes, for
example stations along conveyor belts or production lines.
The ILM can be used in the installation of communication systems and in
temporary configurations, for example for test purposes.
The ILM can be used to replace systems subject to wear and tear, for example slip
rings etc.
At a distance of 11 m, an ILM illuminates a circular area with a diameter of 4 m.
Design
SRobust aluminum die-cast casing with degree of protection IP 65
S2 x 2-pin terminal block in the casing (with cable connection through heavy-duty
threaded conduit) for attachment to PROFIBUS segment
S4-pin terminal block in the casing (with cable connection through heavy-duty
threaded conduit) for connection of the power supply (24 V DC) and signaling
contact
SPermanent wiring; in other words, fast and simple replacement of the
electronics if a fault occurs
SStatus displays of the operating states via LEDs
STransmission rate set with switch inside casing
SProtected from interfering ambient light by integrated daylight filter
SEasy alignment due to area of radiated cone (± 10 ° solid angle).
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Functions
The ILM allows a wireless link with PROFIBUS slaves at a maximum range of 15
m. Communication with several slaves is possible. Interruptions in transmission are
detected and indicated by LEDs and the signaling contact. If there is a
deterioration in the transmission quality, this is indicated by LEDs and the signaling
contact before data transmission is stopped.
The module can be operated in daylight thanks to an integrated filter. When
installing the Infrared Link Module, make sure that there is a free line-of-sight link
between the modules.
When using several ILM transmission paths, avoid one path interfering with
another by including partitions or maintaining minimum clearances.
Ordering Data:
PROFIBUS ILM Order number 6GK1 503-0AA00
Infrared Link Module for wireless
links between PROFIBUS nodes
and segments
Operating Instructions
The full Operating Instructions are included in the Appendix of this manual.
Active Components for Wireless Networks
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Testing PROFIBUS A
Testing PROFIBUS
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A.1 Hardware Test Device BT200 for PROFIBUS-DP
A.1.1 Possible Uses
The BT200 hardware test device for PROFIBUS-DP can be used as an
installation, commissioning, and service tool. Due to its versatility, it is useful for
both the installer of PROFIBUS networks as well as the experienced
commissioning engineer and service engineer. An acceptance report can also be
created following installation of the system.
A.1.2 Area of Application
During installation, the BT200 test device can be used to test the PROFIBUS
cable. Errors made during installation are located quickly and simply, the installer
does not need specific PROFIBUS experience. Even before the system is put into
operation, the BT200 device can be used to test the RS-485 drivers of the
PROFIBUS nodes. It is also possible to obtain a list of the accessible slaves on the
bus on completion of the wiring, without having a PROFIBUS-DP master available.
This means that individual bus segments can be checked in advance, reducing the
commissioning times. If an error occurs, these test functions can be useful in
localizing the problem and minimizing the downtimes of the system.
Note
Check the physical bus properties before commissioning with the BT200. This
reduces the time required for commissioning and prevents system downtimes and
sporadic bus errors.
A.1.3 Logging Functions
All the test results can be stored on the BT200. Using a point-to-point cable, the
data can be transferred to a PC. The test results can be edited on the PC and
printed out as a log.
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A.1.4 Design
Figure A-1 Hardware Test Device BT200 for PROFIBUS DP
SCompact plastic casing, degree of protection IP 30
SDimensions (W x H x D) in mm: approx. 210 x 100 x 50
SLCD Display with 2 x 16 characters
SSealed keypad with eight buttons
SAttachment to the PROFIBUS network via 9-pin sub-D female connector
SPower supply from integrated NC battery
SAttachment to charger (accessories)
Testing PROFIBUS
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A.1.5 Functions
Checking the PROFIBUS Cable
In this test, the PROFIBUS cable alone is tested. The following errors can be
detected:
SShort-circuit between data lines or between data line and shield
SLine break
SShield break
SReversed polarity (A and B)
SReflections that could cause errors
SCheck of the number of activated terminating resistors
The length of the PROFIBUS cable can also be measured.
Checking the RS-485 Interface of a Slave
The test device is connected to one slave. This is supplied with power. The device
then makes the following measurements:
SRS-485 driver OK/defective
SPower supply to the terminating resistor OK/not OK
SRTS signal present/not present
Checking the Accessibility of Nodes
SList of accessible slaves (live list)
SAddressing of specific slaves
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A.1.6 How the Unit Functions
Testing Cables
The previously described tests and measurements are based essentially on
various voltage, reflection and resistance measurements. To check the cable, the
test unit is connected to one end of the cable and a test connector at the other.
When installing the cable, the user works gradually from connector to connector. At
the press of a button the measurements are made automatically and the test
results displayed.
Tests on Nodes
When testing on the node itself, a point-to-point link is established between the test
unit and the node. To complete the tests, the accessibility of the attached slaves is
checked on the wired-up bus. The user can have a list of accessible slaves created
automatically or can check the accessibility of a single slave by specifying its
address manually.
Displaying the Test Results
Apart from the actual test result, the display also indicates concrete measures that
can be taken to remedy problems. During the measurement of the reflections, the
location of the problem is also displayed. This means that the user does not
require specialized PROFIBUS knowledge to work with the test unit and to find
typical problems in the wiring and setup and to eliminate them. No additional
devices are necessary for the measurements. This means a drastic reduction in
commissioning times and plant downtimes.
Documenting the System Status
The BT200 simplifies the creation of an acceptance report to document the system
status at the time of acceptance. As standard, the unit is designed for operation on
PROFIBUS cables complying with type A (EN 50170). The unit parameters can,
however, be modified by entering the electrical parameters for the cable to be
tested. This means (whatever cable type is used) that the location of a problem
can be displayed in meters as well as the total length of the installed cable.
Battery Operation
The device has an accumulator battery. This ensures that the user can test the
entire system regardless of the network. The unit is turned off automatically after 3
minutes if no input is made ensuring that the battery has a long working life and
saving power.
Testing PROFIBUS
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Ordering Data
BT200 hardware test unit 6ES7 181-0AA00-0AA0
– With point-to-point cable for node attachment
– with test connector
– with operating instruction German/English
(without charging unit)
Charging unit (230V AC / 2.4 – 10 V DC) 6GT2 003-1AA00
Charging unit (110V AC / 2.4 – 10 V DC) 6EP8106-0HB01
Test connector (spare) 6EP8 106-0AC20
NC battery pack (spare) 6EP8106-0HA01
Point-to-point cable (spare) 6EP8106-0HC01
You can download the operating instructions free of charge from the Internet under
the entry ID 857969:
www.ad.siemens.de/simatic-cs
Testing PROFIBUS
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A.2 Testing FO Transmission Paths
A.2.1 Necessity of a Final Test
The total attenuation of an FO transmission path, particularly the influence of
splices, can only be estimated roughly during planning. As a result of inaccuracies
when creating the splices and subjecting cables to excessive stress during
installation, the actual attenuation may well be higher than the calculated values.
The only way to be sure that a fiber-optic link functions reliably and has an
adequate link power margin is to measure the attenuation following installation. It is
advisable to test every fiber-optic link in which the connectors were fitted on-site
and to document the results in an acceptance report.
Attenuation
Attenuation defined as the optical power loss in decibels (dB) is the decisive
criterion in optical networks. All system components such as the cable, connectors,
splices, couplers etc. add to the total attenuation of a link and with it to the
attenuation within the entire network. To measure this attenuation, fiber-optic test
units must be used following installation. During the measurements, light with the
same wavelength must be used as in the optical transmission system.
Test Methods
In the main, two test methods are used:
1. The Optical Power Source and Meter
2. Optical Time Domain Reflectometer (OTDR)
A valuable tool for every user is also the fiber-optic troubleshooter. This light
source sends visible light so that fiber breaks, bad splices etc. can be localized
visually.
Some new network components, such as the PROFIBUS OLM version 3 have
integrated diagnostic functions with which they can check the quality of the
received optical signal.
A.2.2 Optical Power Source and Meter
The attenuation on the fiber-optic link is first measured. All the link components
such as the fiber, connectors, couplers and splices contribute to the total
attenuation. The total attenuation must be below the available optical power budget
between the optical transmitter and receiver. Light sources are available for all
normal wavelengths (650 nm, 850 nm and 1300 nm). This means that this method
can be used for plastic, PCF, multimode and single-mode fiber-optic cables.
Testing PROFIBUS
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Arrangement for Measuring Attenuation
The arrangement for measuring attenuation consists of a light source and an
optical meter. The light source is first connected to the receiver via a reference
fiber. The optical power measured at the receiver is the reference value for a link
without attenuation. Following this, the reference fiber is opened and the link to be
measured is inserted. The meter compares the optical power received now with
the previously measured reference value and calculates the attenuation of the
inserted link on this basis.
Step 1: Reference measurement
Step 2: Link measurement
Light source
Light source
Optical power meter
Optical power meter
Figure A-2 Measuring the Total Attenuation of a FO Link
Evaluating the Results of the Attenuation Measurements
An optical power budget is available between an optical transmitter and optical
receiver. This identifies the difference between the minimum power launched by
the transmitter and the minimum optical power required at the receiver. The optical
power budget is normally specified in dB. The measured total attenuation of the
fiber-optic link must be below this optical power budget.
The greater the difference between the total attenuation and the optical power
budget, the greater the operating reliability and long-term stability of the optical
link. The difference between the optical power budget and the total attenuation is
known as the link power margin of an optical link. For multimode glass-fiber links,
this link power margin should not be below 3 dB and for single-mode glass-fiber
links should not be below 2 dB.
Testing PROFIBUS
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A.2.3 Optical Time Domain Reflectometer (OTDR)
If the attenuation measurement described above indicates that the total attenuation
of the fiber-optic link is too high, the causes and the location of the problem must
be established. In this case OTDR units are used (OTDR = Optical Time Domain
Reflectometer).
Figure A-3 Optical Time Domain Reflectometer (OTDR)
OTDRs exist for the wavelengths 850 nm and 1300 nm. This means that this
method can be used for both multimode and single-mode fiber-optic cables.
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How an OTDR Functions
An OTDR can be compared to a radar unit The OTDR sends laser light pulses on
the FO cable to be tested (the end of the cable is open). These light pulses are
reflected more or less strongly by all problem points along the cable. A meter
evaluates the intensity and propagation time of the reflected pulses.
Transmitter
(Laser light)
Analysis
and
display
Measuring
receiver
1. Send light pulses
2. Evaluate reflections for
– intensity
– propagation time
Test FO
cable
Figure A-4 How an OTDR Functions
Testing PROFIBUS
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OTDR Evaluation
The OTDR provides the measurement results graphically
Distance
Start of fiber
Coupling
Fusion splice
Bonding splice
End of fiber
Backscatter
Power ]dB[
Figure A-5 Representation of the OTDR Measurement Results
Figure A-5 clearly illustrates that the power of the launched light reduces
constantly along the fiber-optic link. There are significant jumps at the coupling
points of the fiber.
The following conclusions can be drawn from these results:
SWhether the coupling points should be replaced due to excessive attenuation
SWhether the fiber has been damaged when installing the cable
SThe distance between the impairments and the start of the fiber
Based on this information,
Sdefects resulting from installation can be eliminated,
Sfiber-optic links can be documented in detail and, if problems are occurring, can
be compared with the link at the time it was installed (warranty or not).
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A.2.4 Checking the Optical Signal Quality with PROFIBUS OLM V3
The receive level of the two optical channels can be detected using a normal
commercially available voltmeter attached to measurement sockets on the
PROFIBUS OLM V3. The voltmeter can be inserted and removed during operation
using 2 mm laboratory test plugs (see Figure A-6).
Figure A-6 Testing the Signal Quality on an OLM V3 with a Voltmeter
This allows the following:
SThe incoming optical power can be documented, for example for later
measurements (aging, damage)
SA good/bad check can be made (limit value).
The correlation between the measured output voltage and the signal quality is in
the form of a curve (see Figure A-7).
Testing PROFIBUS
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Figure A-7 Correlation Between the Measured Voltage and Signal Quality with an
OLM/G12
Testing PROFIBUS
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Lightning and Surge Voltage Protection for
LAN Cables Between Buildings B
Lightning and Surge Voltage Protection for LAN Cables Between Buildings
B-2 PROFIBUS Networks SIMATIC NET
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B.1 Why Protect Your Automation System From Overvoltage?
Introduction
One of the most common causes of hardware failures is overvoltage, caused by
the following:
SSwitching in power networks
SAtmospheric discharge or
SElectrostatic discharge
We will show you how to protect devices attached to a PROFIBUS LAN cable from
overvoltages.
Note
This chapter contains information about protecting hardware components on a
PROFIBUS LAN cable from overvoltages.
Comprehensive protection from overvoltage is, however, only assured when the
entire automation system and the entire surrounding building is designed for
protection from overvoltages. This relates particularly to building structures
included in the planning of the building.
We therefore recommend that you contact your Siemens representative or a
company specialized in lightning protection if you require more detailed information
about overvoltage.
Further Literature
You will find detailed information about protecting automation systems from
overvoltages with SIMATIC S7 in the relevant system manuals
S7-300 /11/, S7-400 /12/, ET 200 /9/.
The solutions explained in these manuals are based on the lightning protection
zone concept described in the standard IEC 1024-2 Protection against LEMP.
B.2 Protecting LAN Cables from Lightning
Bus Cables within Buildings
If you keep to the instructions for installing LAN cables located entirely within a
building, no special lightning protection is necessary.
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LAN Cables between Buildings
Since LAN cables between buildings are subject to higher overvoltage risks (the
effects of lightning), the nodes included in the attached bus segment must be
protected from the effects of overvoltage.
Lightning protection facilities for LAN cables are implemented in two different
components, coarse protection and fine protection.
Coarse Protection
While coarse protection prevents the progress of high-energy lightning currents at
the point of entry to the building, the fine protection installed in the vicinity of the
DTE provides finer limitation of overvoltage for the bus node.
SThe lightning protection devices described below represent a protection concept
developed in conjunction with the company of Dehn & Söhne for SIMATIC NET
PROFIBUS and that can be used for all transmission rates (9.6 Kbps to 12
Mbps). The devices can be ordered directly from the firm of Dehn & Söhne;
ordering data are listed below.
SWhen configuring a network make sure that the coarse and fine protection
together must be considered as a node (reduction of the number of nodes in
segments with lightning protection modules).
SIf a PROFIBUS segment runs through several buildings (several lightning
components used in series), a repeater should be installed in each building to
refresh the signal.
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PLC PLC PLCPLC
Coarse protection at
entry to building
Fine protection close to
first nodes
Underground cable,
potential equalization
cable
Same protection
for further cable entry or
exit necessary
Figure B-1 Lightning Protection Concept for LAN Cables Between Buildings
Lightning and Surge Voltage Protection for LAN Cables Between Buildings
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B.2.1 Instructions for Installing Coarse Protection
The coarse protection must be installed at the point where the LAN cable enters
the building and connected to the building equipotential bonding system with low
impedance.
The following are required to create the coarse protection:
SThe base section type no. 919506,
SThe protection module type B, type no. 919510
and
SThe shield contact terminals type no. 919508
To avoid EMC and environmental conditions affecting the coarse protection, it
should be installed in a
Sprotective casing, type no. 906055
At the same time, the transition from the underground cable to the standard indoor
cabling can be made here.
Figure B-2 Coarse Protection Installed at the Entry or Exit of the Building
Lightning and Surge Voltage Protection for LAN Cables Between Buildings
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B.2.2 Instructions for Installing Fine Protection
The fine protection should be installed as close as possible to the first bus node
following the coarse protection.
The following are required to install the fine protection:
SThe base section type no. 919506,
SThe protection module MD/HF type no. 919570,
and
SThe shield contact terminals type no. 919508
The fine protection should be connected to the reference ground of the first bus
node (for example grounded DIN rail when installing in a cubicle). When installing
the fine protection outside cubicles (IP 65 area or higher) this must be installed in
Sprotective casing, type no. 906055
as described in the installation instructions for the coarse protection.
Figure B-3 Fine Protection in the cubicle Close to the First Bus Node
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B.2.3 General Information on the Lightning Protection Equipment
from the Firm of Dehn & Söhne
SWhen installing the modules read the instructions regarding the products from
Dehn & Söhne.
SIf there is a fault in a lightning protection module, communication on the bus is
interrupted (cable short-circuit). To re-establish communication temporarily
(without lightning protection) the protective modules can be removed from the
base modules since these function as through-connected terminals without the
protective module.
SThe rest of the plant protection concept must be implemented complying with
VDE 0185 Part 103.
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C.1 LAN Cables in Automation Systems
LAN Cables as Important Plant Connections
In automation systems, the LAN cables are the most important connections
between individual plant components. Mechanical damage (cable break) or
repeated electrical interference affecting these bus connections reduces the
transmission capacity of the system. In extreme cases, such problems can lead to
failure of the entire automation system. This section explains how to protect cables
from mechanical and electrical impairment.
Keep the Overall System Concept in Mind
LAN cables connect automation systems that in turn are connected to transducers,
power supply units, peripheral devices etc. via cables. All the components together
form an electrically networked automation system.
When connecting system components via electrical cables (in this case LAN
cables), remember to take into account their specific requirements in terms of
system structure.
Connecting cables, in particular, affect the concepts
Sfor safe isolation of dangerous power supply voltages
Sfor protecting the system from overvoltage (for example lightning protection)
Sfor EMC (noise emission and noise immunity)
Sfor electrical isolation
Networking SIMATIC with SIMATIC NET
SIMATIC NET network components and SIMATIC automation components are
designed to operate together taking into account the aspects listed above. By
keeping to the installation instructions described in the system manuals, you will
create an automation system that meets the legal and normal industrial
requirements for safety and noise immunity.
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C.2 Electrical Safety
The signal levels on electric PROFIBUS cables are low voltage. Correctly installed
and operated PROFIBUS LAN cables do not have dangerous electrical voltages.
Remember, however, the following rules when installing the power supply for all
components (nodes, bus components, etc.) that you want to connect to a
PROFIBUS cable.
Power Supply Voltage
Between components operated on mains power supply and the PROFIBUS
interface, the requirements of safe electrical isolation from the power supply
complying with DIN VDE 0160 and DIN IEC 950/VDE 0805/EN 60950/ UL 1950/
CSA 22.2 No. 950 must be met. /7/
24 V DC Power Supply
24 V DC power supplies for components must meet the requirements of low
voltage with safe electrical isolation from the network complying with DIN VDE
0160 and DIN IEC 950/ VDE 0805/EN 60950/ UL 1950/ CSA 22.2 No. 950 must be
met. /7/
Protection from External Electrical Influences
Cable or wire breaks must not lead to undefined statuses in the plant or system.
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C.3 Mechanical Protection of LAN Cables
Protection of Electrical and Optical LAN Cables
Mechanical protection is required to protect LAN cables from breaks or mechanical
damage.
Note
The guidelines for mechanical protection apply both to electrical and optical
cables.
Mechanical Protection
The following measures are recommended to protect LAN cables from physical
damage:
SWhen a cable cannot be installed on a cable rack or similar construction, it
should be installed in a conduit (for example PG 11-16).
SIn areas where the cable is subject to mechanical stress, install the cable in a
heavy-gauge aluminum conduit or in a heavy-gauge plastic conduit (see Figure
C-1)
SWhen 90° bends are necessary and at the junctions between buildings (for
example expansion joints), a break in the conduit is acceptable only when there
is no likelihood of damage to the cable, for example due to falling objects (see
Figure C-2).
SIn areas where the cable is likely to be walked on or driven over, the cable must
be protected from damage by a closed heavy-gauge aluminum or steel conduit.
As an alternative, the cable can be laid in a metal cable gutter.
Remember the instructions for laying cables outside buildings.
Figure C-1 Mechanical Protection of the LAN Cable
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Figure C-2 Interrupting the Conduit at an Expansion Joint
Bus Terminal RS-485
The installation of electrical LAN cables in a protected area is supported by the use
of the RS-485 bus terminal. This allows the attachment of DTEs and service and
commissioning work on the DTEs without needing to move the actual LAN cable.
Redundant LAN Cables
The installation of redundant LAN cables involves special requirements.
Redundant cables should always be installed on separate cable racks to avoid
simultaneous damage by the same event.
Do not kink or crimp the trailing and festoon cables
When installing trailing and festoon cables in moving equipment, make sure that
the cables are not kinked or crimped by other cables and equipment when the
cables are moved.
Do not operate trailing or festoon cables if they are twisted
To ensure that the working life of trailing and festoon cables, make sure they are
not twisted during installation. A line is printed on the outer sheath along the length
of the cables to allow the cable to be checked for twists.
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Install LAN cables separately
To prevent accidental damage to LAN cables, they should be clearly visible and
should be separate from all other wiring and cables. To improve EMC, it is often
advisable to install the LAN cables in a separate cable channel or in conductive,
metal tubes. Such measures also make it easier to localize a faulty cable.
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C.4 Electromagnetic Compatibility of LAN Cables
Electromagnetic Compatibility (EMC)
Electromagnetic compatibility (EMC) includes all questions of electrical, magnetic
and electromagnetic immunity and emission.
To avoid external interference affecting electrical systems, these effects must be
reduced to a certain level. The measures involved include the design, structure
and correct connection of the LAN cable. The components and LAN cables for
SIMATIC NET PROFIBUS meet the requirements of the European standards for
devices used in an industrial environment. This is documented by the CE marking.
Note
The limit values specified can only be guaranteed if the matched components for
SIMATIC NET PROFIBUS are used consistently! The installation instructions in
this manual and in the manuals of the networked programmable logic controllers
must also be adhered to exactly!
C.4.1 Measures to Counter Interference Voltages
Overview
Measures are often taken to suppress interference voltages when the control
system is already in operation and problems occur receiving signals. You can often
reduce the investment necessary for such measures (for example special
contactors) by remembering the following points when installing your automation
system.
These include the following:
SConnecting all inactive metal parts to chassis ground
SShielding devices and cables
SSuitable positioning of devices and cable routing
SSpecial noise suppression measures
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C.4.2 Installation and Grounding of Inactive Metal Parts
Grounding
Connect all inactive metal parts in the immediate vicinity of your automation
components and LAN cables to ground (PE system). This includes all metal parts
of cabinets, machine parts etc. that have no electrical function in the automation
system. Connecting these parts to a uniform system chassis produces a uniform
reference potential for your system and reduces the effects of coupled-in
interference. For detailed information about grounding techniques, refer to the
system manuals of the SIMATIC S7–300 /11/ and S7–400 /12/ programmable
controllers.
C.4.3 Using the Shields of Electrical LAN Cables
Definition
Shielding is a technique used to counteract the effects of magnetic, electrical or
electromagnetic interference fields.
Interference currents on cable shields must be discharged to ground by short,
conductive, large-area connections. To prevent these interference currents
reaching a device or wiring closet, this discharge must take place immediately
before or at the point at which the cable enters the device casing/wiring closet.
Cable Shields
Note the following points about cable shields:
SUse SIMATIC NET PROFIBUS cables throughout your system. The shields of
these cables have an adequate shield density to meet the legal requirements
regarding noise emission and immunity.
SAlways contact the shields of LAN cables at both ends. The legal requirements
for noise emission and noise immunity in your system (CE marking) can only be
achieved when the shields make contact at both ends.
SSecure the shield of the LAN cable to the connector casing.
SIf cables are installed permanently, it is advisable to remove the insulation of the
shielded cable and to establish contact on the shield/PE conductor bar.
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Note
If there is a potential difference between the grounding points, an illegally high
compensating current can flow through the shield grounded at both ends. To
rectify the problem, do not, under any circumstances, open the shield of the LAN
cable.
SInstall an additional bonding conductor parallel to the LAN cable
that takes over the shield current (for notes on equipotential
bonding refer to Section C.4.4)
SUse fiber-optic cable instead of electrical cable (safest solution).
Handling the Shield
Note the following points when handling the shield:
SSecure the braided shield with metal cable clamps.
SThe clamps must make good and large-area contact with the shield (see Figure
C.3 ).
SContact SIMATIC NET PROFIBUS cables only using the braided copper shield
and not the aluminum foil shield. The foil shield is connected to a plastic foil to
increase tearing strength and is therefore non-conductive.
SContact the shield with the shielding bar directly at the point at which the cable
enters the cabinet.
Figure C-3 Securing Shielded Cables with Cable Clamps and Ties (schematic
representation).
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SWhen removing the sheath of the cable, make sure that the braid shield of the
cables is not damaged.
SWhen selecting contact elements, remember that the cables for SIMATIC NET
PROFIBUS have a braid shield outer diameter of approximately 6 mm.
STo allow good contact between grounding elements, tin-plated or galvanically
stabilized surfaces are ideal. With galvanized surfaces, the necessary contact
should be achieved using suitable screws. Painted surfaces should be avoided
at the contact points.
SDo not use shield clamps/contacts for strain relief. The contact with the
shielding bar could be impaired or be broken altogether.
Figure C-4 Contacting the Shield at the Point of Entry to a Closet
C.4.4 Equipotential Bonding
When do potential differences occur?
Potential differences can, for example, be caused by different power supplies.
Potential differences between separate parts of the plant can be damaging for the
system in the following situations:
SProgrammable controllers and peripheral devices are linked on grounded
connections
SCable shields are contacted at both ends and grounded to different parts of the
plant.
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How do you avoid potential differences?
Potential differences must be reduced by installing bonding conductors so that the
functions of the electronic components used are guaranteed.
When and why is equipotential bonding necessary?
The following reasons speak in favor of equipotential bonding:
SDevices with a grounded interface can be damaged by potential differences.
SThe shield of the PROFIBUS cable must not be used for equipotential bonding.
This is, however, the case if parts of the system connected by the cable shield
are connected to different grounding points.
SEquipotential bonding is a requirement for lightning protection.
Rules for Equipotential Bonding
Remember the following points about equipotential bonding systems:
SThe effectiveness of equipotential bonding is greater when the impedance of
the bonding conductor is low.
SThe impedance of the additional bonding conductor must not exceed 10% of
the shield impedance of the LAN cables.
SMake large-area contact between the bonding conductor and the PE conductor.
SProtect the bonding conductor from corrosion.
SInstall the bonding conductor so that the area enclosed by the bonding
conductor and signal cables is as small as possible.
SUse copper or galvanized steel for the bonding conductor.
SInclude metal, conducting cable channels/racks in the equipotential bonding of
the building and between the individual parts of the system. The individual
segments of the channels/racks must be connected together with low
inductance and low resistance and connected to the building ground system as
often as possible. Expansion joints and angled connections should be bridged
by additional flexible grounding bands.
The connections between the individual segments of channels must be
protected from corrosion (long-term stability)
SIf there are connections between sections of buildings (for example separated
by expansion joints) with their own reference point for the building ground
network, a bonding conductor (equivalent copper cross-sectional area ≥
10mm2) must be installed parallel to the cables. This bonding conductor is not
necessary if metal, conducting cable channels/racks are used.
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Note
Bonding conductors are unnecessary if the sections of a system are connected
exclusively using fiber-optic cable (FO).
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C.5 Routing Electrical LAN Cables
Voltages and Currents
Wiring and cables in a system conduct voltages and currents. Depending on the
application, the amplitudes can be of an order much higher than the signal voltage
on the cable. Switching supply voltages can, for example, produce sharply rising
surge voltage peaks in the kV range. If other cables are laid parallel to the LAN
cable, data exchange on the LAN cables can be disturbed by crosstalk. To achieve
problem-free operation of the bus system, certain rules must be adhered to when
installing cables. One extremely effective method of suppressing interference is to
keep as large a distance as possible between the cable causing the interference
(the culprit) and the cable affected by the interference (the victim).
Fiber-Optic Cables
Fiber-optic cables are not affected by electrical interference and, while mechanical
protection is necessary, the EMC rules do not apply.
Telecom Cables
Cables for Telecom have special rules generally specified for a particular country
(in Germany, Telecom cables must not be laid along with other cables).
C.5.1 Cable Categories and Clearances
Cable Groups
It is useful to group wires and cables into various categories according to the
signals they carry, possible interference signals, and their sensitivity to
interference. Minimum clearances can be specified for these categories so that
interference-free operation can be expected under normal operating conditions if
the clearance is adhered to.
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Conditions
Grouping cables according to voltage classes assumes that the interference
voltages relate directly to the power supply voltage conducted (the lower the
supply voltage, the lower the interference voltage). Remember, however, that DC
or 50 Hz power supply voltages do not represent any danger to PROFIBUS
cables. The critical interference voltages in the kHz to MHz frequency range are
created by the “consumer” connected to the cable. A 24 V DC cable with which a
relay is switched regularly has a far more critical interference range than a 230 V
cable supplying a light bulb.
In the information shown below, it is assumed that all the components within an
automation system and all the plant components controlled by the system (for
example machines, robots etc.) at least meet the requirements of the European
standards for electromagnetic compatibility in an industrial environment. If devices
are defective or incorrectly installed, higher interference voltages must be
expected!
The following is assumed:
SThe cables for analog signals, data signals and process signals are always
shielded.
SThe distance from the cables to the chassis surface of the system (cabinet wall,
grounded cable channel, ...) is not more than 10 cm.
Note
In general, the greater the distance between cables and the shorter the distances
over which the cables run parallel to each other, the less the danger of
interference.
Clearance Table
Table C-1 contains the general rules for clearances between a variety of cables.
The rules should be understood as minimum rules for positioning LAN cables
within buildings (inside and outside cubicles).
How to Read the Table
To check how cables of different types must be laid, follow the steps outlined
below:
1. Find the cable type of the first cable in column 1 (cables for ...).
2. Find the cable type of the second cable in the relevant section in column 2 (and
cables for ...).
3. Read the guidelines for laying the cables in column 3 (lay ...).
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Table C-1 Cabling Within Buildings
Cables for ... and cables for ... lay ...
Bus signals, shielded
(PROFIBUS, Industrial Ethernet)
Bus signals, unshielded
(AS-Interface)
Bus signals, shielded
(PROFIBUS, Industrial Ethernet)
Bus signals, unshielded
(AS-Interface)
Data signal, shielded
(PG, OP, printer, counter inputs
etc.)
Analog signals, shielded
DC voltage
(v 60 V), unshielded
Process signals
(v 25 V), shielded
AC voltage
(v 25 V), unshielded
Monitors (coaxial cable)
In common bundles or cable
channels
DC voltage
(u 60 V and v 400 V),
unshielded
AC voltage
(u 25 V and v 400 V),
unshielded
In separate bundles or cable
channels (no minimum clearance
required)
DC and AC voltage
(u 400 V), unshielded Within closets:
In separate bundles or cable
channels (no minimum clearance
required)
Outside closets:
On separate cable paths with at
least 10 cm clearance
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C.5.2 Cabling within Closets
When cabling within wiring closets, note the following points:
SThe minimum clearance between cables of different categories can be found in
Table C-1. In general, the risk of interference due to crosstalk is less the
greater the clearance between the cables.
SWhere cables of different categories cross, they should cross at right angles
(keep sections where the cables run parallel as short as possible).
SIf there is not enough space to maintain a clearance≥ 10 cm, the cables should
be arranged according to their categories in separate metal, conductive
channels. These channels can then be arranged next to each other. The metal,
conductive channels should be screwed to the struts of the rack or the closet
walls making low-resistance and low-inductance contact.
SThe shields of all cables entering the wiring closet must be secured as close as
possible to the point of entry and should make large-area contact with closet
ground.
SParallel routing of incoming cables and internal closet wiring between the point
of entry into the closet and the shield clamp should be avoided at all costs even
with cables of the same category.
C.5.3 Cabling within Buildings
When laying cables outside cabinets but within buildings, note the following points:
SThe clearances listed in Table C-1 must be maintained between the various
cable categories and when laying cables on common cable racks.
SIf the cables are laid in metal cable channels, the channels can be arranged
directly beside each other.
If there is only one common metal channel available for all categories, either the
clearances shown in Table C-1 must be maintained or if this is not possible for
lack of space, the individual categories should be separated from each other by
metallic partitions. The partitions must be connected to the channel making
low-resistance and low-inductance contact.
SCable racks should cross each other at right angles.
SInclude metal, conducting cable channels/racks in the equipotential bonding of
the building and between the individual parts of the system.
SNote the information on equipotential bonding in Section C.4.4 in this manual.
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C.5.4 Cabling outside Buildings
Fiber-optic cables should be given preference
For communications between buildings and between buildings and external
facilities, the use of fiber-optic cables is generally recommended. Due to the optical
transmission principle, fiber-optic cables are not affected by electromagnetic
interference. Measures for equipotential bonding for overvoltage protection are
unnecessary with fiber-optic cables.
EMC Rules for Electrical LAN Cables
When installing electrical LAN cables outside buildings, the same EMC rules apply
as to cables inside buildings. The following additional rules apply:
Sinstall cables on metal cable racks
SElectrically connect the cable racks where they join
SGround the cable racks.
SThere must be adequate potential equalization between buildings and external
facilities regardless of the LAN cables. (see section C.4.4 in this manual)
SThe cables should be installed as close as possible and parallel to the
equipotential bonding..
SConnect the shields of the cables to the grounding network as close as possible
to the point of entry into the building or facility.
SElectrical LAN cables installed outside buildings must be included in the
lightening protection and grounding concept of the entire system. Please note
the information in Appendix B of this manual.
SAll SIMATIC NET PROFIBUS cables can be used if they are installed in cable
channels protected against dampness. In this case, the clearances specified in
section C.5.1 of this manual must be adhered to.
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Underground Cabling
Note
Only the SIMATIC NET PROFIBUS underground cable is suitable for direct
installation underground.
If the LAN cables are installed directly in the earth, we recommend the following:
Sinstall the LAN cable in a trench.
SInstall the LAN cable approximately 60 cm below the surface of the ground.
SMechanical protection should be provided for the LAN cables and a cable
warning band should also be included.
SThe equipotential bonding between the buildings being connected should be
installed approximately 20 cm above the LAN cables (for example a tin–plated
strip conductor), The strip conductor also provides protection against direct
lightening strikes.
SWhen installing LAN cables along with other cable, the clearances specified in
section C.5.1 must be adhered to (for example using bricks to maintain
clearance).
SThe clearance to power cables should be ≥ 100 cm unless other regulations
require a greater clearance.
C.5.5 Special Noise Suppression Measures
Connecting Switched Inductances to Suppressors
Some inductive switching devices (for example relays) create interference voltages
that are a multiple of the switched operating voltage. The distributed ET200 system
manuals /9/ contain suggestions about how to limit the interference voltages
caused by inductance by connecting them to suppressors.
Power Supply for Programming Devices
It is advisable to include a power socket for programming devices in each cabinet.
The socket must be supplied by the same system to which the PE conductor for
the cabinet is connected.
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Cabinet Lighting
Use bulbs for the cabinet lighting, for example LINESTRAR lamps. Avoid the use
of fluorescent lamps since they cause interference. If you need to use fluorescent
lamps, take the measures shown in Figure C-5.
Wire-mesh screen over the lamp
Shielded cable
Metal-encased switch
Power supply filter or shielded
power cable
Figure C-5 Measures for Interference Suppression of Fluorescent Lamps in a Cabinet
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C.6 Electromagnetic Compatibility of Fiber-Optic Cables
Fiber-Optic Cables
For LAN cables between buildings and/or external facilities, the use of fiber-optic
cables is generally recommended. Due to the optical transmission principle,
fiber-optic cables are not affected by electromagnetic interference. Measures for
equipotential bonding and for overvoltage protection are unnecessary with
fiber-optic cables.
Note
Fiber-optic cables are ideally suited for LAN connections in areas with high noise
levels.
Remember, however, that the LAN components operating on an electrical basis
such as OLMs, OBTs or PLCs with integrated optical interfaces may require
additional noise protection measures in such areas before they can be included in
the fiber–optic path. These must be protected using the measures already
mentioned such as shielding, grounding, greater clearance to sources of
interference etc.
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C.7 Installing LAN Cables
C.7.1 Instructions for Installing Electrical and Optical LAN cables
General
During installation, remember that LAN cables can only be subjected to a certain
amount of mechanical strain. Cables can be damaged or even destroyed by too
much tensile stress or pressure, by torsion or by bending them too sharply. The
following instructions will help you to avoid damage when installing LAN cables.
If cables are subjected to strain or stress as listed above, they should always be
replaced.
Storage and Transportation
During storage, transportation and cabling, the open ends of the LAN cable
(without connectors) must be kept closed with a shrink-on cover to prevent
oxidation of the cores and to keep dampness out of the cable.
Temperatures
During transportation, cabling and operation, the cable must not be exposed to
temperatures below the specified minimum temperature or above the specified
maximum temperature otherwise the electrical and mechanical characteristics of
the cables can deteriorate. The permitted temperature ranges of your LAN cable
can be found in the technical data sheets of the LAN cables in Chapter 4.
Tensile Strength
The tensile force exerted on the cables during or after installation must not exceed
the limits of tensile strength of the cables. The permitted tensile strain on your LAN
cable can be found in the technical data sheets of the LAN cables in Chapter 4.
Pull Cables Using Cable Grips and Protect Connectors
To pull cables, make sure that you use cable grips. Before fitting the cable grip,
make sure that the connectors of preassembled cables are protected from the
pressure exerted by the cable grip, for example using a piece of protective tube.
Installing LAN Cables
C-22 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Fitting Strain Relief
Make sure that you provide strain relief approximately 1 m from the connection
point on all cables subject to tensile force. Shield clamps are not adequate for
strain relief.
Pressure
Too much pressure on the cables must also be avoided, for example crimping the
cable when securing it in position.
Torsion
Torsion can lead to the elements of a cable being displaced and degrading the
electrical characteristics of cables. LAN cables must not be twisted.
Do not twist trailing cables and festooned cables.
Make sure that you install the SIMATIC NET trailing cable and the SIMATIC NET
festoon cable without any twisting. The line printed on the outer sheaf along the
length of the cable helps to make sure that the cable in not twisted. If such moving
cables are twisted during installation, the cables will probably be damaged soon
after they are put into operation!
Flexible Cable for Torsional Load
If the cable is liable to be subjected to torsional load (for example robot cables),
use the “SIMATIC NET” flexible cable. This cable is described in Chapter 4
“SIMATIC NET PROFIBUS Cables”.
Bending Radius
To avoid damage within the LAN cables, they must at no time be bent more
sharply than the minimum bending radius.
Note the following:
SWhen pulling in cables under tensile load, much larger bending radii must be
adhered to and when the cable is in its final installed position.
SBending radii for non–circular cables apply only to bending the flat, broader
surface. Bends in the narrower surface require much greater radii.
The permitted bending radii of your LAN cable can be found in the technical data
sheets of the LAN cables in Chapter 4.
Installing LAN Cables
C-23
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Avoid Loops
When laying LAN cables, roll them tangentially from the cable drum or use
appropriate rotary tables. This prevents loops forming and resulting in kinks and
torsion.
Installing other Cables
Remember that LAN cables must not be subjected to excessive strain and stress
when installed. This can, for example, happen when cables are installed along with
other cables on a common rack or in a common duct (providing this is electrically
permitted) and when new cables are pulled along the same path later (during
repairs or when extending a system). If LAN cables are installed along with other
cables in the same cable channel, it is advisable to pull in the sensitive LAN cables
last.
Attachments to PROFIBUS Cables
The attachment of bus connectors and network components (bus terminals,
repeaters, OLMs, ...) to the electrical PROFIBUS cables is described in the
operating instructions or descriptions of the relevant component .
Installing LAN Cables
C-24 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
C.8 Additional Instructions on Installing Fiber-Optic Cables
Protecting Connectors from Contamination
Fiber-optic cable connectors are sensitive to contamination. Unconnected male
and female connectors must be protected with the supplied dust caps.
Attenuation Variations under Load
During installation, the fiber-optic cables must not be twisted, stretched or crimped.
The specified limit values for tensile strain, bending radii and temperature ranges
must be adhered to. During installation, the attenuation values can vary slightly,
these variations are, however, reversible providing the strain limits are not
exceeded.
Using the Pulling Loop, Protecting Connectors
Preassembled SIMATIC NET PCF fiber–optic cables are supplied with a pulling
loop and Kevlar sleeve to allow them to be pulled. Make sure that you only connect
your traction device to this loop. You will find detailed instructions about using the
loop in Appendix D.
Fitting Strain Relief
Although the BFOC connectors have integrated strain relief and provide protection
against kinking, it is advisable to secure the cable additionally as close as possible
to the connector to protect it from mechanical stress.
Plan Adequate Attenuation Reserves
When installing the cables over long distances, it is advisable to include one or
more future repair splices in the power loss budget.
Electromagnetic Immunity
Fiber-optic cables are immune to electromagnetic interference. This means that
the cables can be laid in conduits along with other cables (for example
230 V/380 V power supply cables) without any problems occurring. When the
cables are installed in cable conduits, make sure that when other cables are pulled
through, the maximum strain on the fiber-optic cables is not exceeded.
Installing LAN Cables
C-25
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Attaching PROFIBUS Fiber–Optic Cables
The attachment of the various PROFIBUS fiber–optic cables to optical bus
components (OLM, OBT,...) and devices with an integrated optical interface is
described in the chapter ”Passive Components for Optical Networks” and in
Appendix D.
Installing LAN Cables
C-26 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
D-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Installation Instructions for SIMATIC NET
PROFIBUS Plastic Fiber-Optic with
Simplex Connectors or
BFOC Connectors and Pulling Loop for
the FO Standard Cable D
Installation Instructions for SIMATIC NET
D-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 1
SIMATIC NET
Product Information Dated 08.99
Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber Optic
with Simplex Connectors
This document contains information in English.
© SIEMENS AG 1999
Subject to change
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 2
_________________________________________________________________________________
We have checked the contents of this manual for
agreement with the tools described. Since
deviations cannot be precluded entirely, we cannot
guarantee full agreement. However, the data in this
manual are reviewed regularly and any necessary
corrections included in subsequent editi-
ons.Suggestions for improvement are welcome.
Technical data subject to change.
The reproduction, transmission or use of this document
or its contents is not permitted without express written
authority. Offenders will be liable for damages. All rights,
including rights created by patent grant or registration of
a utility or design, are reserved.
Copyright © Siemens AG 1999
All Rights Reserved
Note
We would point out that the contents of this product documentation shall not become a part of or modify any prior or existing agree-
ment, commitment or legal relationship. The Purchase Agreement contains the complete and exclusive obligations of Siemens. Any
statements contained in this documentation do not create new warranties or restrict the existing warranty.
We would further point out that, for reasons of clarity, these operating instructions cannot deal with every possible problem arising
from the use of this device. Should you require further information or if any special problems arise which are not sufficiently dealt with
in the operating instructions, please contact your local Siemens representative.
WARNING ! The tools described in these instructions are intended only for stripping the jackets from SIMATIC
NET PROFIBUS Plastic Fiber Optic cables. Using the tools for any other purpose can lead to injury
or to damage of the tools or cable.
Under no circumstances must the tools be used on live cables.
Personnel qualification requirements
Qualified personnel as referred to in the operating instructions or in the warning notes are defined as persons who are
familiar with the installation, assembly, startup and operation of this product and who possess the relevant
qualifications for their work and have a First Aid qualification.
!
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 3
General Instructions for Working with
SIMATIC NET PROFIBUS Plastic Fiber Optic Cables
Please note the following instructions to avoid damage to cables:
F Make sure that the selected cable is suitable for the area of application.
You should, for example, check the following:
– Required temperature range
– Resistance of the jacket materials to chemicals, water, oils, rodents etc.
to which the cable may be exposed in your application
– Required mechanical properties (bending radii, tensile strength, transverse compressive
strength)
– Required behavior of the cable in fire
– Suitability of the cable including the connectors for the devices to be interconnected
If necessary, use a special cable that meets your requirements. Your SIMATIC NET contact in your
local Siemens branch will be happy to advise you.
F Never exceed the maximum permitted loads (tensile load, transverse compressive load etc.)
specified in the data sheet of the cable you are using. Excessive transverse compressive load can,
for example, result from using screw clamps to secure the cable.
F Only use plastic fiber-optic cables with devices approved for this plastic FO cable. Keep to the
maximum permitted cable lengths.
F When cutting cables to length, make sure that no loops are formed and that the cable is not twisted.
Loops and torsion under tensile load can cause kinks or cracks that may mean irreparable damage to
the cable.
F Follow the instructions in this manual and use the tools described here.
F Set the cutting depth of the cable knife (part of the stripping tool set, order no. 6GK1 905-6PA10) to a
depth of 1.5 mm prior to use.
The cutting depth is set with the adjusting screw at the end of the handle:
- Turning the adjusting screw clockwise increases the cutting depth
- Turning the adjusting screw counter clockwise reduces the cutting depth
F Make sure that the outer jacket and buffers of the cable and the plastic fibers are not damaged.
When stripping the buffer from the fiber, use only the opening in the stripper marked AWG 16.
Nicks or scratches can allow light to escape and can therefore lead to increased attenuation values
and failure of the transmission path. With time, such defects can also lead to breaks in the fiber and
to failure of the network.
F When grinding and polishing make sure that there is only slight pressure from the connector on to the
foil to avoid fusion of the connector and fiber plastic.
F Make sure that you keep to the bending radii when grinding and polishing particularly when the
cables are supported to provide mechanical strain relief. In this case, make sure that you strip an
adequate length of the outer jacket.
F The polishing holder has four recesses on the bottom surface. Replace the polishing holder as soon
as any of these recesses is no longer visible.
F Never insert contaminated connectors or connectors with fibers extending beyond the end face into
the device sockets. The optical transmitter and receiver elements could otherwise be destroyed.
F When assembling plug adapters and when fitting the cable to them make sure that the transmit and
receive lines are crossed over.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 4
F Plug adapters are designed for fitting preassembled cords once. If a cord has been inserted and must
be removed again, the bent cord section must not be used again. Cut off the bent cord section and
refit the simplex connector.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 5
Setting the Cutting Depth of the Cable Knife
Set the cutting depth of the cable knife
for stripping the outer jacket of the
SIMATIC NET PLASTIC FIBER OPTIC
standard cable to a depth of 1.5 mm.
Then follow the steps as described
below:
The cutting depth is set using the
adjusting screw at the end of the handle.
• Turning the screw clockwise increases
the cutting depth
• Turning the screw counter clockwise
reduces the cutting depth
Try out the cutting depth:
Press the clamp of the cable knife in the
direction of the arrow. Insert the cable.
Rotate the cable knife twice. Slit the outer jacket up to the end of the
cable. Remove the jacket.
If the jacket is difficult to remove, the
cutting depth is not adequate. In this
case increase the cutting depth by
turning the adjusting screw of the cable
knife clockwise.
Try out the setting by stripping a piece of
cable again.
If the foil and the buffer are damaged,
the cable knife is set too deep. In this
case, reduce the cutting depth by turning
the adjusting screw in the handle counter
clockwise.
Try out the setting by stripping a piece of
cable again.
Cut section of jacket with a correctly set
cable knife.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 6
Stripping the Outer Jacket
of the SIMATIC NET PLASTIC FIBER OPTIC Standard Cable
Press the clamp of the cable knife in the
direction of the arrow. Insert the cable up
to a length of 20 cm (if you are fitting a
plug adapter, 30 cm).
Note: The cable knife must be set to a
cutting depth of 1.5 mm.
Rotate the cable knife twice. Slit the outer jacket up to the end of the
cable.
Make a second slit up to the end of the
cable on the opposite side of the jacket.
First turn the cable through 180°.
Then make a second slit up to the end of
the cable starting from the round cut. Remove the outer jacket, Kevlar fibers
and foil working from the end of the cable
towards the round cut leaving the black
and orange FO cords.
Cut off remnants of the jacket, Kevlar
fibers and foil with scissors. Standard cable with the outer jacket
stripped
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 7
Separating the SIMATIC NET PLASTIC FIBER OPTIC Duplex Cord
Insert a sharp knife 20 cm (if fitting a plug
adapter 30 cm) from the end of the cable
in the groove between the two cords and
split the cords up to the end of the cable.
Caution: The buffer of the cords must not
be damaged.
Caution:
Do not split the cords simply by hand,
since the fibers can easily be bent
beyond the minimum bending radius.
Separated duplex cords
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 8
Removing the Buffer
To strip the buffer from the plastic fibers,
use the SIMATIC NET buffer stripper
(included in the stripping tool set).
Important note:
Use the opening labeled AWG 16 (1.5
mm Ø). Smaller openings damage the
fiber and must not be used.
Insert the cord into the opening labeled
AWG 16. The cord must extend
approximately 5 mm beyond the blade.
Press the two handles of the stripper
together and hold them together. The cord is automatically clamped in the
stripper... ...and the buffer is removed.
Open the handles of the stripper slowly
until the clamp releases the cord.
Remove the cord from the stripper. Only
open the handles of the stripper
completely after you have removed the
cord.
Caution: If the handles are opened
completely before the cord has been
removed, the fiber can be damaged by
the blade as it is retracted.
Repeat the same procedure for the
second cord.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 9
Fitting Simplex Connectors
Insert the cord into the simplex plug as
far as it will go Œ and close the clamp •.
Caution: The fiber must extend at least
1.5 mm beyond the end face of the
connector.
Close the clamp until you hear the catch
lock in place. Repeat the same procedure for the
second cord.
Caution: Do not insert the connector into
a device socket, otherwise the excess
fiber length is liable to damage the
transmitter and receiver elements.
Grinding and Polishing Simplex Connectors
Cut off excessive fiber with scissors
leaving approximately 1.5 mm in length. Insert the simplex connector into the
polishing holder as far as it will go. Grind down the excess fiber by
describing a figure-of-eight on polishing
paper (600 grit) on a flat solid surface.
The polishing is completed when the
fiber is flush with the end face of the
connector.
Remove the debris from the polishing
holder and from the end face of the
connector using a clean cloth.
Then polish the end face of the
connector by describing figures-of-eight
on the pink polishing foil (rough side).
Repeat the figure-of-eight movement
approximately 25 times.
Polishing reduces the attenuation by
approximately 2 dB (corresponds to
approximately 10 m cable length). With
short lengths of cable polishing is
unnecessary.
Repeat the procedure with the second
connector and clean the surfaces of the
plug with a clean cloth.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 10
Assembling the Plug Adapter
(only with integrated optical interfaces such as the IM 153-2 FO and IM
467 FO)
Insert the connector of the orange cord 1
with the direction arrows into the holder
whose triangle (arrow head) symbol
points in the same direction.
Caution: The hinge of the simplex
connector must be towards the center of
the plug adapter.
Insert the connector with the black cord
into the free holder.
Caution: Once again the hinge of the
simplex connector must be towards the
center of the plug adapter. The two
hinges must not jut out of the plug
adapter.
Close the upper half of the plug adapter.
Press the two halves together until you
hear them click closed. Assembled plug adapter. Cable with plug adapters assembled at
both ends with crossed over cords.
Marking of the SIMATIC NET PROFIBUS plastic fiber-optic standard
cable for installation without plug adapters
To help you connect up the cable
correctly, the standard cable has arrow
markings on the orange cord.
This helps to make sure that you attach
one end of a cord to the transmitter and
the other to a receiver (crossed over
cords).
First connect the orange cord:
• If the arrow on the orange cord is
pointing out of the cable (as shown in
the figure), connect this cord to the
receiver. The receiver is identified by
an arrow pointing into a circle.
• If the arrow on the orange cord points
into the cable, connect this cord to the
transmitter. The transmitter is
identified by an arrow pointing out of a
circle.
The black cord is then connected to the
free socket of the same FO interface.
1 Only the standard cable has this marking (orange core with arrows), the duplex cord does not have this marking.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 11
Cables, Tools and Accessories
SIMATIC NET PROFIBUS Plastic Fiber Optic,
standard cable
I-VY4Y2P 980/1000 160A
Robust round cable with two plastic FO cords, violet
PVC outer jacket and PA inner jacket, without
connectors,
for use indoors
in meters 6XV1 821-0AH10
50 m ring 6XV1 821-0AN50
100 m ring 6XV1 821-0AT10
SIMATIC NET PROFIBUS Plastic Fiber Optic,
duplex cord
I-VY2P 980/1000 150A
Plastic FO cable with two cords, PVC jacket, without
connectors,
for use in environments where it is subjected to little
mechanical stress (for example within a cubicle or in
a laboratory),
50 m Ring 6XV1 821-2AN50
SIMATIC NET PROFIBUS Plastic Fiber Optic,
Stripping Tool Set
Cable knife for removing the outer jacket
and buffer stripper (round cutting pliers) for removing
the buffer of SIMATIC NET plastic fiber-optic cables.
6GK1 905-6PA10
SIMATIC NET PROFIBUS Plastic Fiber Optic,
Plastic Simplex Connector/Polishing Kit
100 plastic simplex connectors and 5 polishing kits
for assembling SIMATIC NET PROFIBUS plastic
fiber-optic cables
6GK1 901-0FB00-0AA0
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors
Page 12
Plug adapter
Pack of 50 for installing plastic simplex connectors in
conjunction with, for example, IM 467 FO and IM
153-2 FO
6ES7 195-1BE00-0XA0
Other commercially available accessories
• Sharp scissors for shortening the Kevlar and the fibers
• Sharp knife for separating the duplex cords
• Clean, soft cloth for cleaning the polishing holder and the connector end face.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 1
SIMATIC NET
Product Information Dated 08.99
Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber Optic
with BFOC Connectors
This document contains information in English.
© SIEMENS AG 1999
Subject to change
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 2
_________________________________________________________________________________
We have checked the contents of this manual for
agreement with the tools described. Since
deviations cannot be precluded entirely, we cannot
guarantee full agreement. However, the data in this
manual are reviewed regularly and any necessary
corrections included in subsequent
editions.Suggestions for improvement are welcome.
Technical data subject to change.
The reproduction, transmission or use of this document
or its contents is not permitted without express written
authority. Offenders will be liable for damages. All rights,
including rights created by patent grant or registration of
a utility or design, are reserved.
Copyright © Siemens AG 1999
All Rights Reserved
Note
We would point out that the contents of this product documentation shall not become a part of or modify any prior or existing
agreement, commitment or legal relationship. The Purchase Agreement contains the complete and exclusive obligations of Siemens.
Any statements contained in this documentation do not create new warranties or restrict the existing warranty.
We would further point out that, for reasons of clarity, these operating instructions cannot deal with every possible problem arising
from the use of this device. Should you require further information or if any special problems arise which are not sufficiently dealt with
in the operating instructions, please contact your local Siemens representative.
WARNING ! The tools described in these instructions are intended only for stripping the jackets from SIMATIC
NET PROFIBUS Plastic Fiber Optic cables. Using the tools for any other purpose can lead to injury
or to damage of the tools or cable.
Under no circumstances must the tools be used on live cables.
Personnel qualification requirements
Qualified personnel as referred to in the operating instructions or in the warning notes are defined as persons who are
familiar with the installation, assembly, startup and operation of this product and who possess the relevant
qualifications for their work and have a First Aid qualification.
!
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 3
General Instructions for Working with
SIMATIC NET PROFIBUS Plastic Fiber Optic Cables
Please note the following instructions to avoid damage to cables:
F Make sure that the selected cable is suitable for the area of application.
You should, for example, check the following:
– Required temperature range
– Resistance of the jacket materials to chemicals, water, oils, rodents etc.
to which the cable may be exposed in your application
– Required mechanical properties (bending radii, tensile strength, transverse compressive
strength)– Required behavior of the cable in fire
– Suitability of the cable including the connectors for the devices to be interconnected
If necessary, use a special cable that meets your requirements. Your SIMATIC NET contact in your
local Siemens branch will be happy to advise you.
F Never exceed the maximum permitted loads (tensile load, transverse compressive load etc.)
specified in the data sheet of the cable you are using. Excessive transverse compressive load can,
for example, result from using screw clamps to secure the cable.
F Only use plastic fiber-optic cables with devices approved for this plastic FO cable. Keep to the
maximum permitted cable lengths.
F When cutting cables to length, make sure that no loops are formed and that the cable is not twisted.
Loops and torsion under tensile load can cause kinks or cracks that may mean irreparable damage to
the cable.
F Follow the instructions in this manual and use the tools described here.
F Set the cutting depth of the cable knife (part of the stripping tool set, order no. 6GK1 905-6PA10) to a
depth of 1.5 mm prior to use.
The cutting depth is set with the adjusting screw at the end of the handle:
- Turning the adjusting screw clockwise increases the cutting depth
- Turning the adjusting screw counter clockwise reduces the cutting depth
F Make sure that the outer jacket and buffers of the cable and the plastic fibers are not damaged.
When stripping the buffer from the fiber, use only the opening in the stripper marked AWG 16.
Nicks or scratches can allow light to escape and can therefore lead to increased attenuation values
and failure of the transmission path. With time, such defects can also lead to breaks in the fiber and
to failure of the network.
F When grinding and polishing make sure that there is only slight pressure from the connector onto the
paper to avoid fusion of the metal parts and fiber plastic.
F Make sure that you keep to the bending radii when grinding and polishing particularly when the
cables are supported to provide mechanical strain relief. In this case, make sure that you strip an
adequate length of the outer jacket.
F Never insert contaminated connectors or connectors with fibers extending beyond the end face into
the device sockets. The optical transmitter and receiver elements could otherwise be destroyed.
F When fitting the cable to connectors make sure that the transmit and receive lines are crossed over.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 4
Setting the Cutting Depth of the Cable Knife
Set the cutting depth of the cable knife
for stripping the outer jacket of the
SIMATIC NET PLASTIC FIBER OPTIC
standard cable to a depth of 1.5 mm.
Then follow the steps as described
below:
The cutting depth is set using the
adjusting screw at the end of the handle.
• Turning the screw clockwise increases
the cutting depth
• Turning the screw counter clockwise
reduces the cutting depth
Try out the cutting depth:
Press the clamp of the cable knife in the
direction of the arrow. Insert the cable.
Rotate the cable knife twice. Slit the outer jacket up to the end of the
cable. Remove the jacket.
If the jacket is difficult to remove, the
cutting depth is not adequate. In this
case increase the cutting depth by
turning the adjusting screw of the cable
knife clockwise.
Try out the setting by stripping a piece of
cable again.
If the foil and the buffer are damaged,
the cable knife is set too deep. In this
case, reduce the cutting depth by turning
the adjusting screw in the handle counter
clockwise.
Try out the setting by stripping a piece of
cable again.
Cut section of jacket with a correctly set
cable knife.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 5
Stripping the Outer Jacket
of the SIMATIC NET PLASTIC FIBER OPTIC Standard Cable
Press the clamp of the cable knife in the
direction of the arrow. Insert a length of
20 cm of cable.
Note: The cable knife must be set to a
cutting depth of 1.5 mm.
Rotate the cable knife twice. Slit the outer jacket up to the end of the
cable.
Make a second slit up to the end of the
cable on the opposite side of the jacket.
First turn the cable through 180°.
Then make a second slit up to the end of
the cable starting from the round cut. Remove the outer jacket, Kevlar fibers
and foil working from the end of the cable
towards the round cut leaving the black
and orange FO cords.
Cut off remnants of the jacket, Kevlar
fibers and foil with scissors. Standard cable with the outer jacket
stripped
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 6
Separating the SIMATIC NET PLASTIC FIBER OPTIC Duplex Cord
Insert a sharp knife 20 cm from the end
of the cable in the groove between the
two cords and split the cords up to the
end of the cable.
Caution: The buffer of the cords must not
be damaged.
Caution:
Do not split the cords simply by hand,
since the fibers can easily be bent
beyond the minimum bending radius.
Separated duplex cords
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 7
Removing the Buffer
To strip the buffer from the plastic fibers,
use the SIMATIC NET buffer stripper
(included in the stripping tool set).
Important note:
Use the opening labeled AWG 16 (1.5
mm Ø). Smaller openings damage the
fiber and must not be used.
Insert the cord into the opening labeled
AWG 16. The cord must extend at least
10 mm beyond the blade.
Press the two handles of the tool and
hold them together. The cord is automatically clamped in the
tool... ...and the buffer is removed.
Open the handles of the tool until the
clamp releases the cord. Remove the
cord from the tool. Only open the
handles of the tool completely after you
have removed the cord.
Caution: If the handles are opened
completely before the cord has been
removed, the fiber can be damaged by
the blade as it is retracted.
Repeat the same procedure for the
second cord.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 8
Crimping the BFOC Connector
Push the black anti-kink boot Œ, short
crimping sleeve • body of the connector
Ž onto the stripped cords.
Caution: The fiber must extend at least 1
mm beyond the face of the connector.
Push the crimping sleeve onto the
connector body as far as the end stop. Press together the handles of the
crimping tool to open it.
Insert the crimping sleeve into the front
opening (hexagonal 3.25 mm).
Make sure that the crimping sleeve is
fully in the tool.
Press the handles of the crimping tool
together firmly. The connector body is
fixed to the cord and the crimping sleeve.
Note: The tool can only be opened again
after the required pressure has been
reached.
Open the crimping tool and remove the
cord.
Push the anti-kink boot onto the
connector body as far as the end stop. Cut off excessive fiber with scissors
leaving approximately 0,5 mm in length. Repeat the same procedure for the
second cord.
Caution: Do not insert the connector into
a device socket, otherwise the excess
fiber length extending out of the end face
of the connector is liable to damage the
transmitter and receiver elements.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 9
Grinding and Polishing BFOC Connectors
To grind the BFOC connector, insert it in
the black polishing disc. Grind down the excess fiber by
describing a figure-of-eight on polishing
paper (400 grit) on a flat solid surface by
applying gentle pressure to the
connector.
Remove the connector from the polishing
disc and remove the debris with a soft
lint-free cloth.
Fit the connector into the white polishing
disc Finally, place the light gray polishing
paper (1500 grit) on a firm flat surface
and polish the connector end face by
describing a figure of eight while applying
gentle pressure to the connector.
Repeat the figure-of-eight movement
approximately 25 times.
Remove the connector from the polishing
disc and remove the debris with a soft
lint-free cloth.
Repeat this procedure with the second
connector.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 10
Marking of the SIMATIC NET PROFIBUS plastic fiber-optic standard
cable
To help you connect up the cable
correctly, the standard cable has arrow
markings on the orange cord.
This helps to make sure that you attach
one end of a cord to the transmitter and
the other to a receiver (crossed over
cords).
First connect the orange cord:
• If the arrow on the orange cord is
pointing out of the cable, connect this
cord to the receiver. The receiver is
identified by an arrow pointing into a
circle.
• If the arrow on the orange cord points
into the cable (picture), connect this
cord to the transmitter. The transmitter
is identified by an arrow pointing out of
a circle.
The black cord is then connected to the
free socket of the same FO interface.
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 11
Cables, Tools and Accessories
SIMATIC NET PROFIBUS Plastic Fiber Optic,
standard cable
I-VY4Y2P 980/1000 160A
Robust round cable with 2 plastic FO cords, violet
outer jacket and PA inner jacket without connector for
use indoors
In meters 6XV1 821-0AH10
50 m Ring 6XV1 821-0AN50
100 m Ring 6XV1 821-0AT10
SIMATIC NET PROFIBUS Plastic Fiber Optic,
duplex cord
I-VY2P 980/1000 150A
Plastic FO cable with two cords, PVC jacket, without
connectors,
for use in environments where it is subjected to little
mechanical stress (for example within a cubicle or in
a laboratory),
50 m Ring 6XV1 821-2AN50
SIMATIC NET PROFIBUS Plastic Fiber Optic,
Stripping Tool Set
Cable knife for removing the outer jacket
and buffer stripper (round cutting pliers) for removing
the buffer of SIMATIC NET PROFIBUS plastic fiber-
optic cables.
6GK1 905-6PA10
SIMATIC NET PROFIBUS Plastic Fiber Optic,
BFOC crimping tool
For fitting BFOC connectors to PROFIBUS Plastic
Fiber Optic cables
6GK1 905-6PB00
SIMATIC NET PROFIBUS Plastic Fiber Optic,
BFOC connector set
pack of 20 BFOC connectors for assembly of
PROFIBUS Plastic Fiber Optic cables for OLM/P.
6GK1 905-1PA00
20x
SIMATIC NET PROFIBUS Plastic Fiber Optic,
BFOC polishing set
Polshing set for grinding and polishing the end face
of the BFOC connector for PROFIBUS Plastic Fiber
Optic cables OLM/P.
6GK1 905-6PS00
SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors
Page 12
Other commercially available accessories
• Sharp scissors for shortening the Kevlar and the fibers
• Sharp knife for separating the duplex cords
• Clean, soft cloth for cleaning the polishing discs and the connector end face.
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
Page 1
SIMATIC NET
Product Information Dated 08.99
How to Use the Pulling Loop for the
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
This document contains information in English.
© SIEMENS AG 1999
Subject to change
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
Page 2
_________________________________________________________________________________
We have checked the contents of this manual for
agreement with the tools described. Since
deviations cannot be precluded entirely, we cannot
guarantee full agreement. However, the data in this
manual are reviewed regularly and any necessary
corrections included in subsequent editions.
Suggestions for improvement are welcome.
Technical data subject to change.
The reproduction, transmission or use of this document
or its contents is not permitted without express written
authority. Offenders will be liable for damages. All rights,
including rights created by patent grant or registration of
a utility or design, are reserved.
Copyright © Siemens AG 1999
All Rights Reserved
Note
We would point out that the contents of this product documentation shall not become a part of or modify any prior or existing
agreement, commitment or legal relationship. The Purchase Agreement contains the complete and exclusive obligations of Siemens.
Any statements contained in this documentation do not create new warranties or restrict the existing warranty.
We would further point out that, for reasons of clarity, these operating instructions cannot deal with every possible problem arising
from the use of this device. Should you require further information or if any special problems arise which are not sufficiently dealt with
in the operating instructions, please contact your local Siemens representative.
Personnel qualification requirements
Qualified personnel as referred to in the operating instructions or in the warning notes are defined as persons who are
familiar with the installation, assembly, startup and operation of this product and who possess the relevant
qualifications for their work and have a First Aid qualification.
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
Page 3
General Instructions for Working with
SIMATIC NET PROFIBUS PCF Fiber Optic Cables
Please note the following instructions to avoid damage to cables:
F Make sure that the selected cable is suitable for the area of application.
You should, for example, check the following:
– Required temperature range
– Resistance of the jacket materials to chemicals, water, oils, rodents etc.
to which the cable may be exposed in your application
– Required mechanical properties (bending radii, tensile strength, transverse compressive
strength)
– Required behavior of the cable in fire
– Suitability of the cable including the connectors for the devices to be interconnected
If necessary, use a special cable that meets your requirements. Your SIMATIC NET contact in your
local Siemens branch will be happy to advise you.
F Never exceed the maximum permitted loads (tensile load, transverse compressive load etc.)
specified in the data sheet of the cable you are using. Excessive transverse compressive load can,
for example, result by using screw clamps to secure the cable.
F Always use the pulling loop to pull in the PCF standard cable. Never pull in the cable by the
connectors or stripped cords.
F Only use PCF fiber-optic cables with devices approved for this FO cable type. Keep to the maximum
permitted cable lengths.
F When cutting cables to length, make sure that no loops are formed and that the cable is not twisted.
Loops and torsion under tensile load can cause kinks or cracks that may mean irreparable damage to
the cable.
F Follow the steps outlined in these instructions.
F Make sure that the outer jacket and buffers of the cable are not damaged.
F Never insert contaminated connectors in the device sockets. The optical transmitter and receiver
elements could otherwise be destroyed.
F When fitting the cable to connectors make sure that the transmitted and received data are crossed in
the cable.
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
Page 4
Using the Pulling Loop
Die SIMATIC NET PCF Fiber Optic Standard cable is fitted
with a pulling loop at one end. It consists of the loop and a
protective sleeve.
The tensile load is applied to the loop and is distributed over
the Kevlar fibers (strain-relief elements) of the PCF standard
cable. The protective sleeve surrounds the cores with their
preassembled connectors and prevents them from kinking.
Caution: Pull in the cable using only the loop. Never pull on the
protective sleeve or the outer jacket of the cable.
After the cable has been installed, the pulling loop must be
removed. Cut open the back end of the protective sleeve with
scissors for a length of approximately 10 cm.
Caution: Make sure that you do not damage the cords beneath
the protective sleeve.
Free the cords from the protective sleeve and cut away the
Kevlar fibers with scissors.
Caution: Never cut the black or orange cords.
Carefully remove the pulling loop from the end of the cable by
pulling on the loop. The job is done!
Loop
Protective sleeve
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
Page 5
Marking of the
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
To help you connect up the cable
correctly, the PCF standard cable has
arrow markings on the orange cord.
This helps to make sure that you attach
one end of a cord to the transmitter and
the other to a receiver (crossed over
cords).
Remove the dust cap shortly before you
insert the connector into the socket.
First connect the orange cord:
• If the arrow on the orange cord is
pointing out of the cable, connect this
cord to the receiver. The receiver is
identified by an arrow pointing into a
circle.
• If the arrow on the orange cord points
into the cable (picture), connect this
cord to the transmitter. The transmitter
is identified by an arrow pointing out of
a circle.
The black cord is then connected to the
free socket of the same FO interface.
SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable
Page 6
Ordering Data
SIMATIC NET PROFIBUS PCF Fiber Optic,
standard cable
I-VY2K 200/230 10A17 + 8B20
PCF FO cable with 2 cords, PVC outer jacket, for
spanning distances up to 400 m,
assembled with 2 x 2 BFOC connectors,
outer jacket stripped over 20 cm at both ends, with
pulling loop fitted at one end,
for connecting OLM/P.
Standard lengths*
75 m 6XV1821-1BN75
100 m 6XV1821-1BT10
150 m 6XV1821-1BT15
200 m 6XV1821-1BT20
250 m 6XV1821-1BT25
300 m 6XV1821-1BT30
400 m 6XV1821-1BT40
*other lengths available on request
SIMATIC NET PROFIBUS PCF Fiber Optic cable
I-VY2K 200/230 10A17 + 8B20
PCF FO cable with 2 cords, PVC outer jacket, for
spanning distances up to 300 m,
preassembled with 2 x 2 simplex connectors,
outer jacket stripped over 30 cm, with pulling loop
fitted at one end,
for connecting devices with integrated optical
interfaces and OBT
Standard lengths*
50 m 6XV1821-1CN50
75 m 6XV1821-1CN75
100 m 6XV1821-1CT10
150 m 6XV1821-1CT15
200 m 6XV1821-1CT20
250 m 6XV1821-1CT25
300 m 6XV1821-1CT30
*other lengths available on request
*Note:
You can order other lengths and additional components for the SIMATIC NET cabling range from
your local representative.
For technical advice, contact:
J. Hertlein
Siemens AG, A&D SE V22
Tel. 0911/750-4465
Fax 0911/750-9991
E-mail: juergen.hertlein@fthw.siemens.de
E-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Installing Network Components in
Cubicles
E.1 IP Degrees of Protection
Electrical equipment is normally surrounded by a protective casing. The purpose of
this casing includes
SProtection of persons from touching live components or moving parts
(accidental contact protection)
SProtection of equipment from intrusion of solid foreign bodies (solid body
protection)
SProtection of equipment from ingress of water (water protection).
IEC 60529, EN 60529
The degree of protection specifies the degree to which the casing meets these
three protective functions.
The degrees of protection are specified uniformly in the “International Standard
IEC 60529” or in the identical European standard EN 60529.
The degree of protection of a casing is indicated by a code. The code consists of
the letters IP (International Protection) followed by a code number for contact, solid
body and water protection as shown below:
IP 5 4
Code letters
(International Protection)
1st code number (0 through 6)
Contact and solid body protection
2nd code number (0 through 8)
Water protection
In some situations, the degree of protection is specified in even greater detail by
adding letters to the code numbers.
E
Installing Network Components in Cubicles
E-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Degree of Protection
The various degrees of protection are shown and explained briefly in Table E–1.
For more detailed information on the individual ratings and the test conditions that
must be fulfilled, please refer to the standards listed above.
Table E-1 Degree of Protection Afforded (Brief Outline)
Code
Number Contact and Solid Body
Protection Water Protection
0No protection No protection
1against solid bodies ≥ 50 mm
diameter dropping vertically
2against solid bodies ≥ 12 mm
diameter dropping inclined at 15°
3against solid bodies ≥ 2.5 mm
diameter spray water, inclined up to 60°
5against solid bodies ≥ 1 mm
diameter spray water from any direction
6dust deposits spray water – water jet from
nozzle
7ingress of dust (dustproof) Heavy spray water
8 – intermittent immersion at
specified pressure for specified
time
9 – permanent immersion at
specified pressure for specified
time
Installing Network Components in Cubicles
E-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
E.2 SIMATIC NET Components
Ventilation Openings
The casings of most SIMATIC NET network components have ventilation
openings. To allow more effective cooling of the electronics components, ambient
air can flow through the casing. The maximum operating temperatures quoted in
the technical specifications apply only when there is unrestricted flow of air through
the ventilation openings.
Depending on the size of the ventilation openings, such modules comply with the
degrees of protection IP 20, IP 30 to IP 40. You will find the actual degree of
protection of a SIMATIC NET component in its documentation.
Components with the degrees of protection mentioned above do not provide
protection against dust and water! If the installation site requires such protection,
the components must be installed in an additional enclosure such as a switching
cubicle that provides the higher degree of protection (for example IP 65/ IP 67).
If you install these components in an additional enclosure, make sure that the
conditions required for operation are maintained!
Heat Dissipation
Make sure that the temperature inside the additional enclosure does not exceed
the permitted ambient temperature for the installed components. Select an
enclosure with adequate dimensions or use heat exchangers.
Outdoor Installation
If you install the equipment outdoors, make sure that the additional enclosure is not
subjected to direct sunlight. This can lead to a considerable rise in temperature
within the enclosure.
Clearances
Make sure that there is adequate clearance around the component so that
Sthe convection cooling of the component is not restricted
Scomponents do not cause neighboring components to heat up more than
permitted
Sthere is enough space for installing cabling
Sthere is enough space to remove components for maintenance or repair.
Installing Network Components in Cubicles
E-4 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Note
Regardless of the degree of protection of the casing, the electrical and optical
ports are always sensitive to
– mechanical damage
– damage caused by electrostatic contact discharge
– contamination by dust and fluids
Close unused ports with the supplied dust protection caps. Remove these caps
only immediately before connecting up the cables to the ports.
Standards
EN 60529:1991 Degrees of protection provided by casing (IP code) (IEC
60529:1989)
EN 60529:1989 Degrees of protection provided by enclosures (IP Code)
Further Literature
Klingberg, G.; Mähling, W.: Schaltschrank– und Gehäuse–Klimatisierung in der
Praxis mit EMV; Heidelberg 1998
F-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Dimension Drawings F
Dimension Drawings
F-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.1 Dimension Drawings of the Bus Connectors
End face of
sub-D male
conn.
End face of
sub-D male
conn.
15.8
8-0.2 34
10
SIEMENS
on
off
8-0.2
15.8 34
10
SIEMENS
on
off
without PG socket with PG socket
64
64
25
25
5
5
Figure F-1 Bus Connector to IP 20 (6ES7 972-0B.11-0XA0)
15 34
4
35
10
25
30°
58
End face of
sub-D male
conn.
Figure F-2 Bus Connector to IP 20 (6ES7 972-0BA30-0XA0)
Dimension Drawings
F-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
15.8
8-0.1 38 8-0.1
15.8 38
54
54
25
25
5
5
End face of
sub-D male
conn.
10 10
End face of
sub-D male
conn.
35°
35°
without PG socket with PG socket
Figure F-3 Bus Connector to IP 20 (6ES7 972-0B.40-0XA0)
15 56
35
39
OFF
ON
SIEMENS
10
End face of
sub-D male conn.
Figure F-4 Bus Connector to IP 20 (6GK1 500-0EA02)
Dimension Drawings
F-4 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
16
36
35
11.6
72.7
Figure F-5 FastConnect Bus Connector (6ES7 972–0B.50–0XA0)
28.4
34.3
61.75 44.1 15.8
Figure F-6 FastConnect Bus Connector (6GK1 500–0FC00)
Dimension Drawings
F-5
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.2 Dimension Drawings of the RS-485 Repeater
73
125
128
45
Figure F-7 RS–485 Repeater on Standard Rail
125
70
45
Figure F-8 RS-485 Repeater on S7-300 Rail
Dimension Drawings
F-6 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.3 Dimension Drawing of the PROFIBUS Terminator
PROFIBUS
TERMINATOR
6ES7 972-0DA00-0AA0
DC
24 V
L+ M PE A1 B1
SIEMENS
70
60
29.6
40.3
44.5
Figure F-9 PROFIBUS Terminator
Dimension Drawings
F-7
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.4 Dimension Drawings of the RS-485 Bus Terminal
138
53
SINEC L 2
PG/OP
Bus Terminal
RS 485
64 84
50
Figure F-10 RS-485 Bus Terminal on 15 mm high Standard Rail
Dimension Drawings
F-8 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.5 Dimension Drawings of the BT12M Bus Terminal
SIMATIC NET
Bus Terminal 12M
64 84
50
138
53
Figure F-11 BT12M Bus Terminal on 15 mm high Standard Rail
Dimension Drawings
F-9
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.6 Dimension Drawings of the Optical Bus Terminal OBT
138
86
SIMATIC NET
Optical
Bus Terminal
64
50
Figure F-12 Optical Bus Terminal OBT on 15 mm high Standard Rail
Dimension Drawings
F-10 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
CH1
SIMATIC NET
PROFIBUS
Optical
Bus Terminal
6GK1500–3AA00
1 2 3 4 5 6 7
L + 24V
CH1
CH2
CH3
CH2 CH3
PE ML+
NEC CLASS2
24VDC, 200 mA
42.5
67.3
Figure F-13 Drilling Template for the Optical Bus Terminal OBT
Dimension Drawings
F-11
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.7 Dimension Drawings Infrared Link Module ILM
SIEMENS PRLFIBUSILM
30
175
80
60
57.5
87.5
15
Figure F-14 PROFIBUS ILM
1
1
5
2
163
Mounting
drill hole 1
Mounting
drill hole 2
Figure F-15 Drilling Dimensions for Securing the PROFIBUS ILM to a Mounting Plate
Dimension Drawings
F-12 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
F.8 Dimension Drawings Optical Link Module OLM
5.5
40
52
92
137
approx.
150
Figure F-16 Optical Link Module OLM on 15 mm high Standard Rail
Dimension Drawings
F-13
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
94
61
Figure F-17 Mounting the Optical Link Module OLM on a 7.5 mm high Standard Rail
Figure F-18 Mounting the Optical Link Module OLM on a Mounting Plate
Dimension Drawings
F-14 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
G-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Operating Instructions ILM / OLM / OBT G
Operating Instructions ILM / OLM / OBT
G-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
SIMATIC NET
Description and Operating Instructions Stand/
Dated / 1/00
Order Number 6ZB5530-3AC30-0BA1
PROFIBUS ILM (Infrared Link Module)
Im Nachfolgenden finden Sie Informationen in deutscher Sprache.
The following description contains information in English.
E SIEMENS AG 1998
Änderungen vorbehalten
Subject to change
Sous réserve de modifications
Con riserva di modifiche
Hinweis / Note / Avertissement / Avvertenza / Indicatiòn
Achtung
Vor der Inbetriebnahme Hinweise in der entsprechenden aktuellen Dokumentation beachten. Die Bestelldaten hierfür entnehmen
Sie bitte den Katalogen oder wenden Sie sich an Ihre örtliche SIEMENSĆNiederlassung.
Die Inbetriebnahme ist solange untersagt, bis festgestellt wurde, daß die Maschine, in die diese Komponente eingebaut werden
soll, den Bestimmungen der Richtlinie 89/392/EWG entspricht.
Attention
Prior to startup you must observe the notes in the relevant documentation. For ordering data of the documentation please refer
to catologs or contact your local SIEMENS representative.
Startup must not take place until it is established that the machine, which is to accommodate this component, is in conformity the
guideline 89/392/EEC.
Attention
Avant la mise en service, respecter les instructions de la documentation actuelle correspondante. Pour les références de comĆ
mande de la documentation, veuillezĆvous reporter aux catalogues ou consulter votre agence locale SIEMENS.
La mise en service est interdite tant que la machine dans laquelle est incorporé ce composant n'est pas conforme aux prescripĆ
tions de la directive 89/392/CEE.
Attenzione
Prima della messa in funzione, osservare attentamente le avvertenze riportate nella documentazione corrente. Per i dati di ordinaĆ
zione consultare i cataloghi oppure rivolgersi alla locale fidale SIEMENS.
La messa in funzione è vietata fino a quando non è stato acctertato che macchina, in cui il componente deve essere installato,
non rispetta le disposizioni della direttiva 89/392/CCE.
Atenciòn
Antes de la puesta en marcha observar las indicaciones contenidas en la documentatción actual correspondiente. La referencia
de la misma puede consultarse en los catáloges o solicitarse a su agencia SIEMENS local.
Está prohibida la puesta en marcha hast comprobar que la máquina en donde ca a incorporarse este componente cumpie lo
especificado en la directiva 89/392/CCE.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
1Copyright by Siemens
Wir haben den Inhalt der Druckschrift auf Übereinstimmung mit der beschriebenen Hardware geprüft. Dennoch
können Abweichungen nicht ausgeschlossen werden, so daß wir für die vollständige Übereinstimmung keine
Gewähr übernehmen. Die Angaben in der Druckschrift werden jedoch regelmäßig überprüft. Notwendige
Korrekturen sind in den nachfolgenden Auflagen enthalten. Für Verbesserungsvorschläge sind wir dankbar .
Technische Änderungen vorbehalten.
Weitergabe sowie Vervielfältigung dieser Unterlage, Verwertung und Mitteilung ihres Inhalts ist nicht gestattet,
soweit nicht ausdrücklich zugestanden. Zuwiderhandlungen verpflichten zu Schadensersatz. Alle Rechte
vorbehalten, insbesondere für den Fall der Patenterteilung oder GM*Eintragung.
Copyright Siemens AG 1998
All Rights Reserved
We have checked the contents of this manual for agreement with the hardware described. Since deviations
cannot be precluded entirely, we cannot guarantee full agreement. However, the data in this manual are
reviewed regularly and any necessary corrections included in subsequent editions. Suggestions for
improvement are welcome.
Technical data subject to change.
The reproduction, transmission or use of this document or its contents is not permitted without express written
authority. Offenders will be liable for damages.
All rights, including rights created by patent grant or registration of a utility or design, are reserved.
Copyright Siemens AG 1998
All Rights Reserved
Order Number
SIMATIC NET PROFIBUS ILM 6GK1 503-0AA00
Description and Operating Instructions 6ZB5530-3AC30-0BA1
Siemens AG
Infoservice
Abteilung A&D Z 533
Postfach 23 48
90713 Fürth
Germany
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
2
Copyright by Siemens
Note
We would point out that the contents of this product documentation shall not become a part of or modify any
prior or existing agreement, commitment or legal relationship. The Purchase Agreement contains the complete
and exclusive obligations of Siemens. Any statements contained in this documentation do not create new
warranties or restrict the existing warranty.
We would further point out that, for reasons of clarity, these operating instructions cannot deal with every
possible problem arising from the use of this device. Should you require further information or if any special
problems arise which are not sufficiently dealt with in the operating instructions, please contact your local
Siemens representative.
General
This device is electrically operated. Adhere strictly to the safety requirements relating to voltages applied to the
device as described in the operating instructions!
WARNING!
Failure to heed warnings may result in serious physical injury and/or material damage. Only appropriately
qualified personnel may operate this equipment or work in its vicinity. Personnel must be thoroughly familiar
with all warnings and maintenance measures in accordance with these operating instructions. Correct and safe
operation of this equipment requires proper transport, storage and assembly as well as careful operator control
and maintenance.
Personnel qualification requirements
Qualified personnel as referred to in the operating instructions or warning notes are defined as persons who
are familiar with the installation, startup and operation of this product and who possess the relevant
qualifications for their work, e.g. B.:
âTraining in or authorization for connecting up, grounding or labeling circuits and devices or systems in
accordance with current standards in safety technology;
âTraining in or authorization for the maintenance and use of suitable safety equipment in accordance with
current standards in safety technology;
âFirst Aid qualification.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
3Copyright by Siemens
1 The Product 6
2 Symbols 7
3 Introduction 8
4 Description of the Device 9
5 Description of the Functions 11
5.1 Transmission Rate 11
5.2 Topologies 11
5.2.1 Point–to–Point–Link 12
5.2.2 Point–to–Multipoint Link 17
5.3 Signal Regeneration 19
5.4 Monitoring the Received Optical Level 19
5.5 Constant Light Monitoring 19
5.6 Monitoring the Optical Link 20
5.6.1 Monitoring the Optical Receive Activity 20
5.6.2 Monitoring the Optical Link with an Acknowledgment Pulse 20
6 Modes and Settings 22
6.1 Setting the Terminating Resistor 23
6.2 Setting the Transmission Rate 24
6.3 Operation With Acknowledgment Pulse 25
6.4 Operation with Signaling Contact 26
7 Installation and Startup 28
7.1 Notes on Safety 28
7.2 General Notes on Installation and Startup 29
8 Installing the PROFIBUS ILM 31
8.1 Connecting the Electrical RS 485 Bus Cables 37
8.2 Connecting the Power Supply and the
Signaling Contact 39
9 Displays 41
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
4
Copyright by Siemens
10 Help With Problems During Operation 42
10.1 Status Displays for Incorrect Operation 42
10.2 Errors Due to Incorrect Network Configuration 45
10.2.1 Calculating the Propagation Time on Electric Cables and Fiber-Optic Cables 45
10.2.2 Delay Time of the PROFIBUS ILM 46
10.2.3 Delay Time of Further Active PROFIBUS Network Components 46
10.2.4 Transmission Delay T ime TTD 46
11 Technical Specifications 47
11.1 Illumination Range 50
12 Appendix 52
13 References 53
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
5Copyright by Siemens
1 The Product
1 x PROFIBUS ILM
1 x sealing plugs for unused threaded cable inlet
1 x order form
Not included with the product are:
âMounting brackets
âCables for attaching to PROFIBUS or power supply cables
âDescription and Operating Instructions
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
6
Copyright by Siemens
2 Symbols
LAN cable (twisted pair)
Bus connector
terminating resistor deactivated
Active or (or passive) bus node
Infrared link module (ILM)
terminating resistor deactivated
Important information and notes
Bus connector
terminating resistor activated
+
4“Sequence of actions” to be performed by the user.
Passive bus node
Slave
ILM
Master
ILM Infrared link module (ILM)
terminating resistor activated
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
7Copyright by Siemens
3 Introduction
The SIMATIC NET PROFIBUS ILM (Infrared Link Module) is intended for use in PROFIBUS networks. It allows
the conversion of electrical PROFIBUS interfaces (RS 485 level) into transmittable light signals in the infrared,
invisible wavelength range and vice-versa.
With the PROFIBUS ILM, it is possible to link an existing PROFIBUS network with a second PROFIBUS
network without a physical cable connection between the two subnets (electrical cables or fiber-optic cable).
The PROFIBUS ILM is therefore particularly suitable for cableless links with the following:
âTurntables
âAutomatic transport systems
âModifiable test equipment
The transmission is optical and therefore depends on line-of-sight contact between two PROFIBUS ILMs. Apart
from point-to-point links, point-to-multipoint links are also possible.
At least two PROFIBUS ILMs are necessary for a transmission link.
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4 Description of the Device
Each PROFIBUS ILM has an optical and an electrical channel each with a transmitter and receiver section.
The sending PROFIBUS node generates an electrical signal with RS 485 level that is transferred via the
PROFIBUS cable to the PROFIBUS ILM of the sending PROFIBUS node. The PROFIBUS ILM converts this
electrical signal to a coded light signal. This coded light signal is detected by the optical receiver of the
PROFIBUS ILM of the receiving PROFIBUS node. After filtering and decoding, an electrical signal is available
on the receiving PROFIBUS ILM that is then transferred via the PROFIBUS cable to the receiving PROFIBUS
node.
The data transmission is half duplex as normal in PROFIBUS, in other words at any point in time only one node
can send while all others receive. Each node can, however, send and receive.
A wireless link between PROFIBUS ILM and data light barriers of other manufacturers is not possible due to
the differences in the optical transmission techniques.
The electrical channel of the PROFIBUS ILM uses the RS 485 transmission technique which is typical for
PROFIBUS and processes the standard data rates of 9600 bps to 1.5 Mbps. The data rate must be set by the
user.
The electrical channel is connected via SIMATIC NET PROFIBUS cables (for ordering data, see Catalog IK10).
The cables enter the casing via heavy-duty threaded cable inlets. The shield makes contact here and the wires
are connected using screw-type terminals.
The PROFIBUS ILM can be used at any position in an electrical PROFIBUS network. When it is connected at
the end of a segment, the user must activate a terminating resistor.
The operating voltage is an intrinsically safe 24 V direct voltage and is connected just as the PROFIBUS
cables by feeding the cable through a heavy-duty threaded cable inlet to a terminal block.
LEDs signal the correct operating status and any problems in operation.
Problems occurring during operation can also trigger a signaling contact allowing centralized monitoring of a
system.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
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SIEMENS PROFIBUS ILM
Figure 1: PROFIBUS ILM
The mechanical construction is a compact, stable metal housing (splash-water protected) with degree of
protection IP65. The casing must be mounted by the user on a grounded surface with two screws. When
shipped, the data rate is set to 1.5 Mbps, the signaling contact is not activated if errors occur and the
terminating resistor is not activated.
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5 Description of the Functions
5.1 Transmission Rate
The SIMATIC NET PROFIBUS ILM supports the following transmission rates:
9.6 Kbps
19.2 Kbps
45.45 Kbps
93.75 Kbps
187.5 Kbps
500 Kbps
1.5 Mbps (default)
The transmission rates of the connected network nodes can have the tolerance of )/–0.3% as specified in the
PROFIBUS standard.
5.2 Topologies
The PROFIBUS ILM can be used in two topologies:
âThe point-to-point link between two PROFIBUS ILMs where one or more master or slave nodes can be
attached to one subnet and one or more slave nodes can be attached to the other.
âThe point-to-multipoint link between a PROFIBUS ILM to which a subnet with one or more masters or
slaves is connected and n PROFIBUS ILMs with n subnets or DTEs without master functionality. In a
point-to-multipoint link, the optical contact between the master network and the subnets is necessary. For
a PROFIBUS ILM with purely slave subnets, an unobstructed view between them is not necessary.
Possible topologies are illustrated below based on sample configurations.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
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5.2.1 Point–to–Point–Link
Infrared
transmission link
0.5 to 15 m
PROFIBUS
master network segment PROFIBUS
slave network segment
Slave
Master
Master
Master
Slave
Slave
Slave
ILM ILM
Figure 2: Point-to-Point Link with Two PROFIBUS ILMs
Figure 2 describes the typical layout of a PROFIBUS network with master and slave nodes and an infrared
transmission link with two PROFIBUS ILMs. The infrared transmission link is implemented as a point-to-point
link by the two PROFIBUS ILMs. In this situation, the two PROFIBUS ILMs replace a cable connection
between the two network segments. Remember that only slave nodes are permitted in the slave network
segments.
+Make sure that the terminating resistors are activated at the segment ends (either in the bus
connector or in a PROFIBUS ILM).
Cascading is a further application for a point-to-point link.
Note
This “cascading with PROFIBUS ILM” mode is possible, but does involve a risk when operating PROFIBUS.
The transmission using an infrared link is generally more susceptible to problems than transmission via cable
(optical or electric).
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+Make sure that the infrared link cannot be disturbed, for example by “interrupting” the link with
obstacles, extraneous light etc.
When cascading with PROFIBUS ILM, only one segment with master nodes is permitted, the cascaded
segments must only contain slave nodes.
+Make sure that the two infrared transmission links do not interfere with each other, in other words
either the spatial arrangement of the modules (clearance) or a physical barrier (wall) must ensure
that each PROFIBUS ILM can only detect the transmission of its partner module and cannot detect
emissions from either of the modules of the other infrared link.
Note
When cascading, the delay times of the PROFIBUS ILMs must be taken into account. The delay times are
shown in Table 3 and must be included in the calculations during configuration.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
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Master
Master
Slave
Slave
Slave
Slave
Slave
Slave
ILM
ILM
ILM
ILM
Infrared
transmission link 1
0.5 to 15 m
Infrared
transmission link 2
0.5 to 15 m
PROFIBUS
master network segment
PROFIBUS
slave network segment 1
PROFIBUS
slave network segment 2
Optical isolation between the transmission links.
Figure 3: Cascading Two PROFIBUS ILM Transmission Links
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A further application of a point-to-point link is described below. Figure 4 shows how several slave network
segments can be connected to one master network segment using their own infrared transmission links.
+Once again, make sure that the infrared transmission links do not interfere with each other, in
other words either the spatial arrangement of the modules (clearance) or a physical barrier (wall)
must ensure that each PROFIBUS ILM can only detect the emission of its partner module and
cannot detect emissions from the modules of the other infrared links.
If this is not guaranteed, this can lead to problems in the master network segment. The response of a slave
node is detected at slightly different times in the master segment due to the unsynchronized operation of the
PROFIBUS ILM causing pulses to be lost on the master network segment.
The advantage of this arrangement is that if there is a problem on an infrared link between two PROFIBUS
ILMs, only the connected slave segment is disconnected. The master network segment and the other slave
network segments retain their functionality. This topology is also suitable when the PROFIBUS ILMs of the
slave network segments cannot be arranged so that they are all located in the light cone of the PROFIBUS ILM
on the master network segment.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
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Infrared
transmission link 1
0.5 to 15 m
Infrared
transmission link 1
0.5 to 15 m
Optical isolation between the infra-
red transmission links
PROFIBUS
slave network segment 2
PROFIBUS
slave network segment 1
PROFIBUS
master network segment
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Master
Master ILM ILM
ILM ILM
Figure 4: Link Between Several Slave Network Segments and One Master Network Segment
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5.2.2 Point–to–Multipoint Link
Instead of the multiple use of point-to-point links, the point-to-multipoint link can also be used. Optical isolation
between the infrared transmission links is not necessary. If the configuration is correct, only one slave node
responds to the request of a master node and because there is only one PROFIBUS ILM on the master
network segment, there are no synchronization problems with the response.
The advantage of this arrangement is that with n slave segments only n)1 PROFIBUS ILMs are required.
The disadvantages of this arrangement are not only the restrictions in the arrangement of the slave PROFIBUS
ILMs to a solid angle of )/–10 degrees but also from the point of view of the master PROFIBUS ILM the
poorer monitoring of the link because the acknowledgment pulse mechanism cannot be used (see Section
5.6.2).
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
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Infrared
transmission link 1
0.5 to 15 m
Infrared
transmission link 2
0.5 to 15 m
PROFIBUS
slave network segment 1
PROFIBUS
slave network segment 2
Infrared
transmission link 3
0.5 to 15 m
PROFIBUS
slave network segment 3
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Slave
Master
Master
ILM
ILM
ILM
ILM
PROFIBUS
master network segment
Figure 5: Point-to-Mulitpoint Link with n)1 PROFIBUS ILMs (One Master Subnet, 3 Subnets with Slaves)
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
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5.3 Signal Regeneration
The PROFIBUS ILM regenerates the signal shape and amplitude of the received signals. This makes it
possible to cascade unconnected network segments using infrared transmission links. Since the PROFIBUS
ILM, however, has a delay time for processing and passing on the signal the delay on the PROFIBUS ILM must
be taken into account. If fast response times are required in a DP system, cascading must be restricted
depending on the remaining network length and other active components in the network (repeaters, OLMs).
5.4 Monitoring the Received Optical Level
The PROFIBUS ILM monitors the received level when receiving data via the infrared link. The receive level is
compared with a fixed reference value. If the level falls below this reference value during reception, the red
”LOW” LED is always lit. With suitable configuration, the user can also trigger the signaling contact in this
situation.
The reference value corresponds to 1.4 x the minimum receive level. This situation (1.4 x the minimum receive
level) applies when the distance between the sending and receiving PROFIBUS ILM is 80 to 85% of the
maximum distance in this direction.
In the optical axis (receiver and sender are directly opposite and turned through exactly 180 degrees to each
other) the maximum distance is 15 m, in other words at approximately 12 m to 13 m between the sending and
receiving PROFIBUS ILMs, the received optical level is still 1.4 times the minimum receive level. A reserve of 2
to 3 m remains along the optical axis. This reserve is however drastically reduced if the position of one of the
PROFIBUS ILMs is changed in such a way that it is moved out of the optical axis (if the PROFIBUS ILM is
moved sideways or turned). When close together, a displacement of only a few centimeters vertically away
from the optical axis can lead not only to the level monitoring responding but also to errors on the bus.
5.5 Constant Light Monitoring
To transmit data, the PROFIBUS ILM uses infrared light as emitted by other energy sources. If the received
light exceeds a certain intensity, the working range of the receiving diode is exceeded and errors in the data
can occur. The infrared wavelength used cannot be seen by the human eye.
The PROFIBUS ILM therefore indicates when other light sources subject it to an illegally high infrared radiation
by lighting up the red ”ERROR” LED. The user can also configure a switch to activate the signaling contact in
this situation.
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5.6 Monitoring the Optical Link
The PROFIBUS ILM has two mechanisms with which it monitors problems on the optical link.
– monitoring of the optical receive activity
– monitoring of the optical link with an acknowledgment pulse
5.6.1 Monitoring the Optical Receive Activity
With the yellow “RX” LED, the PROFIBUS ILM indicates the reception of data via the optical channel of the
PROFIBUS ILM. The pulse for the LED is extended to approximately 300 ms so that it is possible to recognize
data reception even when small amounts of data are received.
Apart from the optical display using the “RX” LED, the PROFIBUS ILM also has integrated monitoring logic that
triggers the signaling contact when problems occur receiving data on the optical channel provided the user
configures this function with a switch. Problems in reception on the optical channel occur when there has been
no change in the status of the optical receive channel for a period of approximately 300 ms, in other words
when no message was received within 300 ms or a received message takes longer than 300 ms.
Note
The “activate signaling contact if problems occur in reception” configuration should not be set on the
PROFIBUS ILM in the master subnet if its partner ILM only has one slave node that is not addressed during
this time.
5.6.2 Monitoring the Optical Link with an Acknowledgment Pulse
During configuration, the user can activate a mechanism so that an acknowledgment pulse is expected from
the receiving station after data have been sent. This acknowledgment must be received within the time set as
the interval between sending and transmitting on PROFIBUS (11 bit times). This acknowledgment pulse is not
passed on to the electrical channels of the sending or receiving PROFIBUS ILM but is restricted exclusively to
the optical transmission link.
Note
The “monitor link with acknowledgment pulse” configuration must be activated on both PROFIBUS ILMs of a
point-to-point link.
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This monitoring logic must not be used on a point-to-multipoint link. Otherwise problems can occur in the
PROFIBUS network.
The display of the acknowledgment pulse function is one of the functions of the “TX” LED. With the yellow “TX”
LED, the PROFIBUS ILM indicates that data are being sent on the optical channel of the PROFIBUS ILM. The
pulse for the LED is extended to approximately 300 ms so that send activity can also be recognized with short
data fields.
âIf an acknowledgment is received for a sent frame and the “monitor link with acknowledgment pulse”
configuration is set, the “TX” LED is lit yellow.
âIf no acknowledgment is received and the “monitor link with acknowledgment pulse” configuration is set,
the “TX” LED changes color from yellow to orange. The pulse for this display is also extended to 300 ms
so that a lost acknowledgment can also be recognized by the user.
The user can also configure a switch to activate a signaling contact. The signaling contact remains inactive
unless the “monitor link with acknowledgment pulse” configuration was set.
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6 Modes and Settings
To operate the PROFIBUS ILM, the terminating resistor, the data rate and the monitoring options must
be set manually.
Note:
When shipped, the configuration is as follows:
âThe terminating resistor is inactive
âThe data rate is set to 1.5 Mbps
âThe “monitor link with acknowledgment pulse” monitoring mechanism is inactive.
âThe activation of the signaling contact is disabled.
The settings can be made after removing the cover from the basic module using switches S201 (transmission
rate and monitoring mechanisms) and S202 (terminating resistor).
1
1
0
1
Configuration switch (S201)
Terminating resistor switch
(S202)
Plug connector for ribbon cable
Power supply and signaling contact
Cable clamps for
contacting the shield
Cable for power supply
and signaling contact
PROFIBUS cable
PROFIBUS
attachments
ON OFF
Figure 6: Elements for Setting the Configuration of the PROFIBUS ILM
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6.1 Setting the Terminating Resistor
Electrical cables in a PROFIBUS network must be terminated with the characteristic impedance of the cable at
the start and end of the bus. Switch S202 is used for this purpose on the basic module of the PROFIBUS ILM.
Note
Note that the switch must be set to “terminating resistor activated” if a PROFIBUS ILM is located at the start or
end of an electrical PROFIBUS network (only one PROFIBUS cable connected).
The switch must be set to “terminating resistor deactivated” if a PROFIBUS ILM is looped into a PROFIBUS
network (two PROFIBUS cables connected).
If the terminating resistor is not set correctly, sporadic errors will occur on PROFIBUS that cannot be detected
by the PROFIBUS ILM.
SIEMENS
12 SIEMENS
12
Terminating resistor
off Terminating resistor
on
Figure 7: Setting the Terminating Resistor
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6.2 Setting the Transmission Rate
To operate the PROFIBUS ILM, the transmission rate must be set manually. The transmission rates normal
in PROFIBUS (9,6 Kbps to 1.5 Mbps) are possible and in addition also the transmission rate of 45.45 Kbps.
The transmission rate of the attached bus nodes must be within the tolerance of )/– 0.3%. The user must set
the same transmission rate on all PROFIBUS ILMs in a PROFIBUS network.
12345678
123
123
123
123
123
123
123
123
Switch for
setting the transmission rate
Setting 0
Setting 1
As shipped:
All switches 0
1.5 Mbps
500 Kbps
187.5 Kbps
93.75 Kbps
45.45 Kbps
19.2 Kbps
9.6 Kbps
reserved
Figure 8: Setting the Transmission Rate
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6.3 Operation With Acknowledgment Pulse
For operation of the PROFIBUS ILM with acknowledgment pulses, a manual setting must made during
configuration. Operation with acknowledgment pulse is only intended for the use of point-to-point links between
two PROFIBUS ILMs.
Note
If a point-to-multipoint topology is being used, this mechanism must be deactivated otherwise problems can
occur on the bus.
12345678
4
4
Switch 4:
Link monitoring with acknowledgment pulse
Setting 0
Setting 1
Operation without acknowledgment
pulse
Operation with acknowledgment pulse
As shipped:
All switches 0
Figure 9: Operation with Acknowledgment Pulse and the Corresponding Switch Setting
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6.4 Operation with Signaling Contact
The signaling contact is used to monitor the PROFIBUS ILM via a digital input on a PLC or as part of a current
loop. If problems occur the contact opens, in other words a connected current loop is then interrupted. By
setting four switches, the user decides which events trigger the signaling contact. If more than one problem is
configured to trigger the signaling contact, the problem cannot be localized using the signaling contact alone. In
this case, the LED displays can also provide information and step-by-step disabling of the switches that
activate the signaling contact can narrow down the problem.
Note
Remember that if you want to activate the signaling contact when the acknowledgment pulse is absent, the
“monitor link with acknowledgment pulse” configuration must be activated.
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123456784
5
5
6
6
7
7
8
8
Switch 4:
Link monitoring with ack-
nowledgment pulse must
be activated if switch 5 is
used
Setting 0
Setting 1
As shipped:
All switches 0
Signaling contact not activated if acknowledg-
ment pulse absent
Signaling contact activated
if acknowledgment pulse absent
Signaling contact not activated if no reception or
permanent reception
Signaling contact activated if no reception or
permanent reception
Signaling contact not activated by extraneous
light
Signaling contact activated by extraneous light
Signaling contact not activated by low receive
level
Signaling contact activated by low receive le-
vel
Figure 10: Configuration for Triggering the Signaling Contact
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7 Installation and Startup
7.1 Notes on Safety
âUse the PROFIBUS ILM only as described in this “description and operating instructions”.
âNever connect the PROFIBUS ILM to the mains power supply 110 V – 240 V.
âIn particular, take note of all the warnings and notes relating to safety.
âThe operating voltage must be a safety extra-low voltage complying with IEC 950/EN 60 950/VDE 0805 of
maximum +30V (typically )24 V). According the CUL approval you should connect the PROFIBUS ILM
only at the load side of a Class 2 or Class 3 Power source as defined by the National Electric Code
(NEC), Article 725–2 and the Canadian Electrical Code (CEC).
âThe voltage connected to the signalling contact must be a safe extra-low voltage complying with IEC
950/EN 60 950/ VDE 0805 According the CUL approval you should connect the signalling contact only at
the load side of a Class 2 or Class 3 power source as defined by the National Electric Code (NEC), Article
725–2 and the Canadian Electrical Code (CEC).
âWiring the PROFIBUS ILM, pay attention to the wiring methods described in NEC article 725–52, 725–54,
725–61 and 725–71.
âSelect a site to install the module so that the climatic limit values listed in the technical specifications are
not exceeded.
âThe device emits infrared light in the non-visible range. According to the currently valid regulations, the
PROFIBUS ILM is included in the class of devices subject to the regulations covering laser protection IEC
60 825–1 although the device does not include laser equipment. The emitted infrared power is below the
limit values of laser protection class 1.
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7.2 General Notes on Installation and Startup
First, select the network topology suitable for your system.
You can then install and start up the PROFIBUS ILM step-by-step as shown below:
3Check the area for suitable sites where you can install the modules.
3Make mounting brackets suitable for the sites you have chosen. Chapter 8 describes an example of a
general-purpose support consisting of two identical mounting brackets that are easy to make.
3Remove the four cover screws and disconnect the 20-pin ribbon cable from the basic module and then
remove the top panel of the PROFIBUS ILM.
+Caution:
Disconnect the cable by pulling out the connector, do not pull the cable itself !
Do not touch the electronics module in the top panel !
Do not loosen the screws securing the electronics module !
3Mount the PROFIBUS ILM on the support or device using two screws.
3Ground the PROFIBUS ILM with low resistance.
3Connect the PROFIBUS cable(s) and the power supply and signaling contact cable. In awkward locations,
it is sometimes better to connect the cables before actually mounting the modules.
3Depending on your bus topology, activate or deactivate the terminating resistor (active when the ILM is at
the end of the cable, deactivated if the ILM is looped into the cable),
3Set the transmission rate configured in the PROFIBUS network to the same setting on all PROFIBUS
ILMs of a PROFIBUS network using the switches.
3Set the “monitor link with acknowledgment pulse” mode for a point-to-point link, if required.
3Set the errors to trigger the signaling contact using the switch if you want to use the signaling contact for
monitoring.
3Plug in the ribbon cable of the electronics section into one of the coded plug connectors on the basic
module. The plug connectors are coded to prevent reverse polarity.
3Replace the top cover of the PROFIBUS ILM using the four cover screws.
3Align the PROFIBUS ILM to the partner station so that the emission of the PROFIBUS ILM is along the
optical axis to the partner ILM.
3Test the arrangement with power applied but without data exchange.
Only the green POWER LED must be lit.
3Test the transmission link with data exchange.
The yellow TX and RX LEDs should be lit as well as the green power LED.
The red “ERROR” LED must not be lit since this indicates too much extraneous light which always causes
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
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transmission errors.
The red “LOW” LED should only be lit when the level on the infrared link is close to the minimum receive
level (operation at the edge of the illumination cone).
3Check the data exchange for incorrect data using SCOPE for PROFIBUS (TMG i-tec), a tool for
diagnostics on PROFIBUS networks.
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8 Installing the PROFIBUS ILM
The PROFIBUS ILM can be mounted with two screws on a flat surface (approximately 180 x 80 mm). This can
be a wall, a mounting plate or the surface of a device or vehicle.
The holes in the PROFIBUS ILM are intended for screws with a thread diameter of maximum 4.5 mm and a
screw head diameter of maximum 8.5 mm.
Figure 11 shows the location of the holes drilled in the ILM.
1
1
52mm
163 mm
Mounting
hole 1
Mounting
hole 2
Figure 11: Dimensions for Securing the PROFIBUS ILM to a Mounting Plate
Select the site for installing the module so that the climatic limit values and mechanical stress values as
described in the technical specifications are adhered to. When installing the module, make sure, in particular,
that no direct sunlight falls on the device otherwise both the temperature range of the device (maximum 60°C)
and the light intensity in the infrared range will be exceeded and cause functional problems. It is advisable to
protect the device with a “sunshade” making sure that it cannot subjected to direct sunlight even when the sun
is extremely low.
Note
Make sure that there is sufficient space to connect the bus and power supply cables. The cables must not
extend into the area of the send and receive window.
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Make sure that there are no infrared sources in the illumination cone in front of a PROFIBUS ILM. There
should also be no reflecting surfaces in any part of the illumination cone to avoid reflecting back the modules
own emission.
Before mounting the PROFIBUS ILM, connect the power supply and PROFIBUS cables if the site where the
module is being installed is awkward to reach.
Mount the PROFIBUS ILM on a low-resistance and low-inductance earthed metal wall, support or mounting
plate. Make sure that there is a reliable electrical connection between the ILM casing and the mounting plate.
Use toothed washers under the screw heads to break through any paint. Secure the modules with machine
screws (for example M 4 x 30).
The most suitable way of mounting the PROFIBUS ILM is to use a support that allows the module to be aligned
with the partner station.
A suitable support would be as follows:
- Mechanically stable
- Low-resistance and low-inductance connection to ground or the vehicle chassis
- Adjustable so that optimum alignment along the optical axis to the partner station is possible.
- Simple and cheap to make
- Corrosion-proof depending on the characteristics of the installation site.
One possible design of a support is the mounting angle shown in Figure 12. This can be made easily in any
workshop (cutting sheet metal, bending, drilling). Each support requires two identical angles to allow
adjustment in two axes.
The angles are bolted together with standard components such as M4 or M6 bolts, washers or toothed
washers and M4 and M6 nuts.
3 mm thick sheet aluminum is, for example, suitable or galvanized 2 mm sheet steel. If suitable profile material
is available, this makes construction even simpler since it is not necessary to bend the arm.
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200 mm 20mm
80 mm80mm
6.4 mm
Thickness of sheet
approx. 3 mm depending on
mech. requirements
Diameter 171.1 mm
Figure 12: Example of a Simple Mounting Bracket
Instead of drilling individual holes in a circular arc with a diameter of 171.1 mm with 4.5 mm diameter pairs of
holes opposite each other, you can also cut two arc-shaped slits in the plate.This requires a cutting device but
has the advantage that the ILM can be aligned continuously and therefore more accurately on the vertical axis
during operation.
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The finished construction of the support with two mounting angles and the securing of the PROFIBUS ILM is
described in Figures 13 to 15.
SIEMENS PROFIBUS ILM
Installation of the ILM with a mounting bracket
front view
Site of in-
stallation
Mounting
bracket 2
Secured to a
base with two
bolts
Toothed washer
Bolt
M 6x16
Nut M6
Washer
Mounting bracket 1
Figure 13: Front View of the PROFIBUS ILM Installed with Mounting Brackets
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
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ILM
ILM
Direction of emission
Installation of the ILM with mounting bracket
top view
Washer
Two toothed washers
Bolt M6 x 16
Nut M6
Washer
Alignment by installing in other holes
Mounting bracket 2
Secured on
base with two M4
bolts
Mounting bracket 1
Figure 14: Top View of the PROFIBUS ILM Installed With Mounting Brackets
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
35 Copyright by Siemens
ILM
Screw M6 x 16
Mounting bracket 2
Mounting bracket 1
Alignment
by turning
Threaded cable inlets
Cables for
PROFIBUS,
power supply and
signaling contact
Installing the ILM with mounting bracket
side view
Installation site
Figure 15: Side View of a PROFIBUS ILM Installed With Mounting Brackets
By installing angle 1 in different holes on the mounting surface, it is possible to turn the PROFIBUS ILM
through the vertical axis, however the adjustment is not continuous.
By loosening the M6 securing bolts, the PROFIBUS ILM can be adjusted continuously to align it to the partner
station in the horizontal axis. To add greater stability, it is advisable to use toothed washers with the bolts.
It is also advisable to install the module at the edge of the mounting surface so that the cables lead to and from
the module unhindered and to make sure that there is no reflection of the sender to its own receiver caused by
the installation site itself.
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8.1 Connecting the Electrical RS 485 Bus Cables
For the RS 485 bus cable, use only shielded twisted pair cables with an outer diameter of 7.5 to 10 mm.
Appendix B lists the electrical parameters of cable types recommended in compliance with the standard.
Make sure that you connect the same cores (green or red) uniformly to all bus terminals of a cable section,
either terminal A or terminal B.
The following are recommended for field bus networks:
Terminal A: Green core
Terminal B: Red core
Do not connect any RS 485 LAN cables that are laid completely or partly outside buildings without first
protecting the network using a suitable surge voltage protector. Otherwise, lightning strikes in the area can
destroy the PROFIBUS ILM or other network components.
Connect the RS 485 LAN cable to the terminal block as shown in Figure 16.
The terminals marked A or B are electrically identical.
AB
AB
Terminal block
Cable clamp
Cable installed
Bare wire approx. 8 mm
Core insulation approx. 8 mm
Fold back braided shield
approx. 8 mm
Figure 16: Connecting the PROFIBUS Cables
Fold back the braided shield over the outer jacket of the LAN cable. This provides you with a sufficiently large
cable diameter to clamp the cable.
Screw the threaded cable inlet so that if IP65 is required, the cable connection is watertight. If this is required,
PROFIBUS cables with a round cross-section and an outer diameter of 7.5 to 10 mm must be connected.
Tighten the threaded cable inlet with a torque of approx. 2.5 to 3 Nm so that the collar of the cable inlet is
sealed against the casing of the PROFIBUS ILM. When the cable is connected, the union nut of the cable inlet
must be tightened so that the cable can no longer be pulled out. When tightening the nut, make sure that the
cable does not turn with it.
If a union nut must be released again, the threaded cable inlet should be tightened again afterwards to make
sure that this is still flush against the casing.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
37 Copyright by Siemens
If the device is at the start or end of an electrical PROFIBUS segment, you must seal one threaded cable inlet
using the accompanying sealing plug.
If the mechanical stress on the PROFIBUS cable is liable to change, make sure that you install additional strain
relief. The cable clamp in the device itself is only intended for low-resistance discharge of spurious voltages on
the shield. The threaded cable inlet is used only for sealing the cable entry and to prevent the cable being
pulled out accidentally. Neither of these, however, is intended as strain relief against continuous tensile stress
on the cables.
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8.2 Connecting the Power Supply and the
Signaling Contact
Use a two-wire round cable if you do not want to use the signaling contact or a four-wire round cable if the
signaling contact is required. This is necessary so that the threaded cable inlet seals the cable entry and
prevents the cable from being pulled out. Ideally, you should use twisted pair cables since they are less
susceptible to noise. The outer diameter of the cables must be between 7.5 and 10 mm.
Do not connect power supply or signaling contact cables that are laid partly or completely outside buildings
without first providing a suitable surge voltage protector to protect the PROFIBUS ILM and your low-voltage
network. Otherwise, lightning strikes in the area can destroy the PROFIBUS ILM or other network components.
If the cable is laid outside buildings and in cable cable conduits along with cables supplying power, you should
also use a shielded cable for the power supply and signaling contact to prevent interference from the power
cables.
Connect the power supply and signaling contact cable to the terminal block as illustrated in Figure 17.
)–S1 S2
)–S1 S2
Terminal block
Cable clamp
Cable installed
Bare wire approx. 8 mm
Core insulation approx. 8 mm
Fold back braided shield
approx. 8 mm
Figure 17: Connecting the Power Supply and Signaling Contact Cable
If you have chosen a shielded cable, make sure that there is a good electrical connection between the braided
shield and shield clamp. This is guaranteed if you fold back the braided shield over the outer jacket of the
cable. This provides you with a sufficiently large cable diameter to clamp the cable.
Screw the threaded cable inlet so that if IP65 is required, the cable connection is watertight.
If this is required, PROFIBUS cables with a round cross-section and an outer diameter of 7.5 to 10 mm must
be connected.
Tighten the threaded cable inlet with a torque of approx. 2.5 to 3 Nm so that the collar of the threaded cable
inlet is sealed against the casing of the PROFIBUS ILM. When the cable is connected, the union nut of the
cable inlet must be tightened so that the cable can no longer be pulled out. When tightening the nut, make sure
that the cable does not turn with it.
If the power supply and signaling contact cable is subject to changing tensile stress, make sure that you
provide additional strain relief. The cable clamp in the device itself is only intended for low-resistance discharge
of spurious voltages on the shield. The threaded cable inlet is used only for sealing the cable entry and to
prevent the cable being pulled out accidentally. Neither of these, however, is intended as strain relief against
continuous tensile stress on the cables.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
39 Copyright by Siemens
Figure 18 shows the functional wiring of the power supply and signaling contact cable. The pair of cores
connected to “)” and “–” supplies the power for the PROFIBUS ILM. This pair must always be wired up.
)–S1 S 2
Relay
Signaling contact
(normally closed contact)
Electronics
of the ILM
Terminal block for
power supply and
signaling contact
Power supply
20 to 30 V
max. 300 mA
NEC Class 2
Power supply
max. 30 V
max. 1 A
NEC Class 2
Figure 18: Wiring of the Power Supply and Signaling Contact
The pair of cores connected to “S1” and “S2” is used to wire the signaling contact and is only necessary if you
intend to use the signaling contact.
The signaling contact is closed in normal operation and opens if the following problems occur:
âThe device has no power supply
âAcknowledgment pulse was not detected (acknowledgment pulse mechanism activated and configured to
trigger the signaling contact),
âNo changing reception activity on the optical receiver if this was configured to trigger the signaling contact.
âToo much extraneous light at the optical receiver if this was configured to trigger the signaling contact.
âReceive level low at optical receiver if this was configured to trigger the signaling contact.
The signaling contact has no electrical connection to any other components of the PROFIBUS ILM.
Limit values of the relay
âMaximum switching power: 30 W
âMaximum switching voltage: 30V DC;
âMaximum switching current: 1.0 A
The voltage connected to the signaling contact must be a safety extra-low voltage complying with IEC 950/EN
60 950/ VDE 0805. According to the CUL approval you should connect the signalling contact only at the load
side of a Class 2 or Class 3 power source as defined by the National Electric Code (NEC), Article 725–2 and
the Canadian Electrical Code (CEC).
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
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9 Displays
POWER
green LED not lit No power supply or internal power supply defective or ribbon ca-
ble not plugged in.
lit green Power supply OK
TX
yellow/orange LED not lit Data not sent optically
lit yellow Data are sent, acknowledgment bit correctly received or acknow-
ledgment bit mechanism not activated.
lit orange Data being sent, acknowledgment bit activated but not correctly
received.
RX
yellow LED not lit Data not optically received
lit yellow Data optically received
LOW
red LED not lit Receive level OK (RX LED lit)
no receive level (RX LED also not lit)
lit red Data optically received, the level is however low (RX LED also lit)
risk of data errors
ERROR
red LED not lit Infrared level at receiver is not critical
lit red Infrared level at receiver is critical, risk of data errors
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
41 Copyright by Siemens
10 Help With Problems During Operation
10.1 Status Displays for Incorrect Operation
LED Display Possible Causes Signaling
Contact
POWER LED not lit - Power supply failed or turned off
- Module defective
- Ribbon band cable not plugged in when assem-
bling the module
Always si-
gnals
POWER LED lit green
TX LED not lit
RX LED not lit
- Interruption on one or more cores of the RS 485
LAN cable
- Reversed connection of core A and B of the RS
485 LAN cable
- Connected PROFIBUS master defective (not sen-
ding)
- PROFIBUS node is not attached or attached
PROFIBUS node is not turned on
- No partner station detected with attached PROFI-
BUS master
POWER LED lit green
TX LED not lit
RX LED lit yellow
- Interruption on one or more cores of the RS 485
LAN cable
- Reversed connection of core A and B of the RS
485 LAN cable
- Attached PROFIBUS slave defective (not sen-
ding)
- PROFIBUS slave is not attached or attached
PROFIBUS slave is not turned on
- PROFIBUS slave node not correctly addressed
and therefore not responding
POWER LED lit green
TX LED lit orange,
RX LED not lit
- No acknowledgment pulse received, partner sta-
tion not responding Signals when
configured
(acknowledg-
ment pulse)
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
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LED Display Possible Causes Signaling
Contact
POWER LED lit green
TX LED lit orange,
RX LED lit yellow
- No acknowledgment pulse received since partner
station not configured with acknowledgment pulse
- On point-to-multipoint links on the PROFIBUS
ILM of the master subnet if acknowledgment bit
configured (see Section 6.4)
Signals when
configured
(acknowledg-
ment pulse)
POWER LED lit green
TX LED lit orange,
RX LED lit yellow,
LOW LED lit red
- No acknowledgment pulse received since partner
station is not configured with acknowledgment
pulse or receive level for acknowledgment pulse
and response frame too low.
- On a point-to-multipoint link on the PROFIBUS
ILM on a slave subnet if configured with acknow-
ledgment bit (see Section 6.4)
Signals if
configured
(acknowledg-
ment pulse,
level monito-
ring)
POWER LED lit green
TX LED lit yellow
RX LED not lit
- Partner station not responding because not atta-
ched, infrared link interrupted, incorrectly configu-
red (PROFIBUS address of the slave incorrect,
data rate of the partner PROFIBUS ILM set incor-
rectly etc.)
Signals when
configured
(bus activity)
POWER LED lit green
TX LED lit yellow,
RX LED lit yellow,
LOW LED lit red
- Risk of problems on bus, since infrared link has
too much attenuation (obstacles in area of trans-
mission link, distance between PROFIBUS ILMs
too great, PROFIBUS ILM turned out of line with
partner station)
Signals when
configured
(level monito-
ring)
POWER LED lit green
TX and RX LEDs not lit
ERROR LED lit red
- Risk of problems on bus due to incidence of ex-
traneous light (for example sunlight, lamps with
infrared component, halogen lamps with high
energy)
Signals when
configured
(constant
light)
POWER LED lit green
RX LED lit yellow
ERROR LED lit red
- Bus problems must be expected due to incidence
of extraneous light with high-frequency modula-
tion (for example energy-saving lamps with HF
switching device)
Signals when
configured
(constant
light)
Table 1: Possible problems operating the PROFIBUS ILM
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
43 Copyright by Siemens
If no display indicates an error and communications problems nevertheless occur, check the parameters set on
both PROFIBUS nodes. You should also check the electrical RS 485 wiring. The most common cause of
problems is activating or deactivating the terminating resistor incorrectly. You should also check that the cable
shields at the ends of all PROFIBUS cables and all shielded power supply cables are making satisfactory
contact.
Note
Remember that sporadic data errors on the cable network are not detected by the PROFIBUS ILM. The
PROFIBUS ILM cannot check the contents of frames but can only monitor the basic functions and optical
transmission quality.
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10.2 Errors Due to Incorrect Network Configuration
In large PROFIBUS networks with numerous modules and long cable lengths, the delay caused by network
components and cables (transmission delay) must be taken into account when setting the monitoring times. If
you do not take these delay times into account, problems will occur during operation. In such situations, the
active partner does not receive a response to a request within the slot time of PROFIBUS because this has
been configured too short.
In large networks, or networks with looped-in active components, the transmission delay time(TTD) must be
calculated to allow correct configuration.
The transmission delay time is the maximum time that can elapse during the transmission of a frame between
the sender and receiver on the transmission medium.
Note
If the configuration software you have used to configure your PROFIBUS network does not support the PRO-
FIBUS parameter TTD, increase the two times min. TSDR and max. TSDR in each case by 2 x TTD (the reac-
tion time of the responder is increased by the transmission delay time for the outward and return path).
10.2.1 Calculating the Propagation Time on Electric Cables and Fiber-Optic Cables
The propagation times on electrical cables or fiber-optic cables are physically related to the speed of light and
certain material characteristics and are therefore almost constant (approximately 5 µs/km).
First calculate the transmission link with the longest propagation time between the sender and receiver of a
frame. PROFIBUS nodes that communicate with each other (for example DP slave with DP slave) do not need
to be taken into account.
Indicators for long propagation times are as follows:
âLong fiber-optic or copper cables
âHigh cascading depth of active components (PROFIBUS OLMs, PROFIBUS ILMs, PROFIBUS repeaters)
The delay time is approximately 5 µs per km cable length.
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
45 Copyright by Siemens
Converted to bit times this results in the following:
Transmission Rate
in Kbps Delay Time
in bit times per km
9.6 0.05
19.2 0.10
45.45 0.23
93.75 0.47
187.5 0.94
500.0 2.50
1500.0 7.50
Table 2: Delay Times of Fiber-Optic and RS 485 LAN Cables
To calculate the cable delay time, the maximum cable length in km is multiplied by the delay time
corresponding to the transmission rate from the table.
10.2.2 Delay Time of the PROFIBUS ILM
In contrast to the propagation time of electrical cables and fiber-optic cables, the delay time through the logic of
the PROFIBUS ILM clocked at the transmission frequency is not a physical time constant but depends on the
transmission rate. The number of logic levels in series is relevant with each causing a bit time delay.
The delay time per PROFIBUS ILM is 6 bit times from RS 485 input to infrared output when sending and 3 bit
times from infrared input to RS 485 output when receiving. The total delay time of the RS 485 input of the
sending PROFIBUS ILM to the RS 485 output of the receiving PROFIBUS ILM is therefore 9 bit times.
If several PROFIBUS ILM links are cascaded, the total delay time is the product of 9 bit times of the individual
links and the cascading depth.
10.2.3 Delay Time of Further Active PROFIBUS Network Components
Please refer to the delay time listed in the documentation of the specific product.
10.2.4 Transmission Delay Time TTD
The total delay time of the PROFIBUS network is the sum of all the values calculated in Sections 10.2.1 to
10.2.3.
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11 Technical Specifications
Operating voltage
Safety extra-low voltage (SELV)
24 V DC (20 V to 30 V)
Current consumption ma×. 300 mA
Transmission rate 9.600 Kbps; 19.200 Kbps; 45.45 Kbps, 93.75 Kbps;
187.5 Kbps; 500 Kbps; 1.5 Mbps;
Setting the transmission rate Using 3 DIP switches
Setting the mode Using 5 DIP switches
Bit error rate <10–6
Signal delay time
RS 485 input → infrared output <= 6 bit times
Signal delay time
infrared input → RS 485 output <= 3 bit times
Electrical channel
Input/output signal RS 485 level
Input voltage dielectric strength –10 V to )15 V
Interface signals Ungrounded within the SELV limits
Terminating resistors Activated with DIP switch
Optical channel
Optical source 21 LEDs
Optical power 280 mW effective with alternating 0–1 sequence
Receiver sensitivity 0.5 A/W
– 28 dBmW
Wavelength 860 nm to 880 nm
Distance between two ILMs maximum 15 m in the optical axis
12 m at )/–2 m distance from the optical axis
Signaling contacts Limit values of the relay
maximum switching power 30 W
Maximum switching voltage 30 V DC
Maximum switching current 1.0 A
Table 3: Technical Specifications of the PROFIBUS ILM
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
47 Copyright by Siemens
Electromagnetic Compatibility (EMC)
Noise emission Limit Class B (EN 55022)
Immunity to static discharge On shield connection and casing ±8 kV contact di-
scharge (IEC 1000–4–2)
Immunity to high frequency noise 10 V/m at 80% amplitude modulation with 1 kHz,
80 MHz – 1 GHz (ENV 50140; IEC 1000–4–3)
10V/m at 50% duty cycle at 900 MHz
(ENV 50 204)
10 V/m at 80% amplitude modulation at 1 kHz,
10 kHz – 80 MHz (ENV 50141)
Immunity to disturbances on the cable
(burst)
On power supply cables and shielded RS 485 LAN ca-
bles: ±2 kV
(IEC 1000–4–4)
Immunity to disturbances on the cable
(surge)
On power supply cables: ±1 kV balanced
On shielded RS 485 cables: ±2 kV unbalanced
(IEC 1000–4–5)
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Safety
VDE specifications VDE 0806=EN60950 and IEC950
UL/CSA approval Requirements are met
Climatic environmental conditions
Ambient temperature 0 °C to )60 °C
(IEC 68–2–1, IEC 68–2–2)
Storage temperature –40 °C to )70 °C
(IEC 68–2–14)
Relative humidity < 95% (none condensing)
(IEC 68–2–30)
If condensation forms on the window, there is a tempo-
rary reduction in the distance that can be covered.
There is no permanent functional disturbance and no
damage to the electronics if the threaded cable inlet ful-
fills the requirements of IP65.
Mechanical environmental conditions
Oscillation during operation 10 to 58 Hz, 0.075 mm deflection
58 to 150 Hz, 10 m/s2 (1g) acceleration
(IEC 68–2–6)
Oscillation during transportation 5 to 9 Hz, 3.5 mm deflection
9 to 500 Hz, 10m/s2 (1g) acceleration
Degree of protection IP 65
Weight 800 g
Dimensions 175 × 80 × 58 mm
Casing material Die-cast aluminum
Table 4: Environmental Conditions for the Use of the PROFIBUS ILM
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
49 Copyright by Siemens
11.1 Illumination Range
To determine the arrangement of two PROFIBUS ILMs on an infrared transmission link, the illumination range
of the sending PROFIBUS ILM must be known. The receive cone is broader so that with the half-duplex
transmission used with PROFIBUS the restriction results from the narrower cone.
Note
Each PROFIBUS ILM on an infrared link must be arranged and aligned so that it reaches its partner with its
transmit cone.
The illumination range of the sender is shown in Figure 19. In the range from 0.5 to 12 m, there is adequate
illumination density in a solid angle of )/– 10 degrees with free emission without shadows caused by
obstacles. At 12 m distance from the sending PROFIBUS ILM, there is an illuminated circular area with a
diameter of approximately 4 m. Although the send window of the PROFIBUS ILM is neither round nor square,
from a distance of 2 m the illuminated area is practically round since from this distance the light source can be
assumed to be a point.
At a distance greater than 12 m, in the same way as the illumination provided by a spotlight, the illuminated
area starts to reduce. At 15 m distance, an illuminated area of 2 m diameter is guaranteed.
Note
These data are only guaranteed when the windows of the PROFIBUS ILM are clean. From time to time, the
window should be cleaned using a clean soft cloth as usual with other optical devices or glasses. Under no
circumstances should aggressive or abrasive cleaning agents be used.
Condensation on the window or wetting with water or other liquids reduces the illumination range. With
condensation, a reduction of approximately half of the maximum range has been measured. If the liquid
produces bubbles, the reduction is sometimes even higher since not only the optical attenuation but also the
optical refraction of the liquid takes effect.
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The “LOW” LED displays critical receive levels.
Minimum distance to
partner ILM 0.5 m
ILM Optical axis 2 m 4 m +/–10 degrees
aperture angle
12 m 15 m
Figure 19: T ransmitter Illumination of the PROFIBUS ILM
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
51 Copyright by Siemens
12 Appendix
Electrical parameters of the RS 485 LAN cables
You can use the following cables to attach an RS 485 bus segment and individual DTEs to the PROFIBUS ILM:
âCable Type A complying with PROFIBUS DP; (DIN 19 245 Part 2)
âCable Type B complying with DIN 19 245 Part 1; 04.91; Section 3.1.2.3
Remember the restricted distance and transmission rate possible with the Type B cable (according to Table 2).
Cable Parameters Type A Type B
Characteristic resistance 135 to 165 ohms
(3 to 20 MHz)
100 to 130 ohms
(f →100 kHz)
Capacitance per unit
length <30 pF/m <60 pF/m
Loop resistance <110 Ohms/km –
Core diameter →0.64 mm →0.53 mm
Core cross-section →0.34 mm2→0.22 mm2
Table 5: Electrical Parameters of the Shielded Twisted Pair LAN Cables
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13 References
âPROFIBUS networks
SIEMENS AG
âDIN 19245 Part 1 (04.91):
“Messen, Steuern, Regeln; PROFIBUS Teil 1;
Process Field Bus; Übertragungstechnik, ”
âDIN 19245 Teil 2 (10.91):
“Messen, Steuern, Regeln; PROFIBUS Teil 3;
Process Field Bus; Dezentrale Peripherie (DP)”
âEIA Standard RS 485 (April 1983):
“Standard for electrical characteristics of generators
and receivers for use in balanced digital multipoint systems”
Infrared Link Modul (ILM)6ZB5530–3AC30–0BA1
53 Copyright by Siemens
Product name:
Infrared Link Module (ILM) Order no. 6GK1 503–0AA00
The SIMATIC NET product named above meets the reuirements of the following EU
directives:
EMC 89/336/EEC
Directive 89/336/EEC “Electromagnetic Compatibility”.
Area of application
The product is designed for operation in an industrial and domestic environment.
Area of application Requirements
Noise emission Noise immunity
Industrial EN 50081–2 : 1993 EN 50082–2 : 1995
Domestic, business and workshop EN 50081–1 : 1992 EN 50082–1 : 1997
Conformity Certificates
The EU conformity certificates are available for the relevant authorities according to the EU directive
and are kept at the following address:
Siemens Aktiengesellschaft
A&D PT2
Industrielle Kommunikation
Postfach 4848
D–90327 Nürnberg
Directive on Machines
The product remains a component in compliance with Article 4(2) of the EU directive on machines
89/392/EEC.
According to the directive on machines, we are obliged to point out that this product is intended solely
for installation in a machine. Before the final product is started up, it must be established that it conforms
to the directive 89/392EEC.
Installation Guidelines
The product meets the requirements providing you adhere to the guidelines for installation and
operation in the documentation SIMATIC NET PROFIBUS Networks.
Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1
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Description and Operating Instructions
SIMATIC NET PROFIBUS
Optical Link Modules
OLM/P11
OLM/P12
OLM/G11
OLM/G12
OLM/G12-EEC
OLM/G11-1300
OLM/G12-1300
Safety Instructions
This manual contains instructions which must be observed to ensure your own personal safety and to avoid
damage to devices and machinery. The instructions are highlighted with a warning triangle and are shown as
follows according to the degree of endangerment:
Danger
means that death, serious injury or considerable damage to property will result if the appropriate
safety measures are not taken.
Warning
means that death, serious injury or considerable damage to property can result if the appropriate
safety measures are not taken.
Caution
means that light injury or damage to property can result if the appropriate safety measures are not
taken.
Note
is an important piece of information about the product, how to use the product, or the relevant
section of the documentation to which particular attention is to be drawn.
Qualified personnel
A device may only be put into operation and operated by qualified personnel.
Qualified personnel in the sense of the safety instructions detailed in this manual are persons who are authorized to
operate, ground and label devices, systems and electrical circuits in accordance with the standards of the safety
systems employed in the plant.
Certified usage
Please observe the following:
Warning
The device may only be employed for the purposes described in the catalog and technical
description, and only in conjunction with external devices and components recommended
or approved by Siemens.
The product can only be operated correctly and safely if it is transported, stored, installed and
assembled properly and correctly. Furthermore, it must be operated and serviced carefully.
Trademarks
SIMATIC ®and SIMATIC NET ®are registered trademarks of Siemens AG.
Other designations in this manual may be registered trademarks, the use of which by third parties for their own
purposes may violate the rights of the owner.
Copyright Siemens AG, 1996 to 1999, All rights reserved
Transmission or duplication of this document, evaluation and providing
information about its contents are not permitted unless expressly
authorized. Non-compliance with these instructions will result in claims
for damages. All rights reserved, in particular in the event of a patent
being awarded or a GM entry.
Siemens AG
A&D
Industrial Automation Systems SIMATIC NET
Postfach 4848, D-90327 Nürnberg
Disclaimer of liability
We have checked this manual to ensure that the contents comply with
the described hardware and software. However, deviations cannot
be excluded. We can therefore assume no responsibility for the total
compliance of these contents.
The details and information in this manual are regularly controlled, and
any corrections and amendments which may prove to be necessary are
included in subsequent editions. We welcome any suggestions for
improvement.
© Siemens AG 1996 to 1999
Subject to technical alterations
Siemens Aktiengesellschaft Printed in the Federal Republic of Germany
3
Version 1.0 8/00 3
Version 1.0 8/00
Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 General Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Non operating mode related functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 Operating mode related functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Network Topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1 Line topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.1.1 Line topology with optical fiber link monitoring and segmentation . . . . . . . . . . . . . . . . . . 10
3.1.2 Line topology without optical fiber link monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.2 Star topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.3 Redundant optical ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4 Setting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Safety notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.2 General information about setting up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.3 Setting compatibility, operating mode and transmitting power . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.1 Setting the compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
4.3.2 Setting the operating mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
4.3.3 Reducing the optical transmitting power on the OLM/P11 and OLM/P12 . . . . . . . . . . . . 19
4.4 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.4.1 Connecting the optical lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
4.4.2 Mounting the modules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
4.4.3 Connecting the electric RS 485 bus lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.4.4 Connecting the power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.4.5 Connecting the signaling contact lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
4.4.6 Defining the receiving level of the optical ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5 LED Indicators and Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.1 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.2 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
6 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
6.1 Configuration of optical line and star topologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
6.2 Configuration of redundant optical rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
7 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.1 CE Designation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.2 Literature notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.3 List of abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.4 Measuring sockets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.5 SIMATIC NET - Support and Training . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36
Contents
Order Numbers
SIMATIC NET OLM/P11 6GK1 502-2CA00
SIMATIC NET OLM/P12 6GK1 502-3CA00
SIMATIC NET OLM/G11 6GK1 502-2CB00
SIMATIC NET OLM/G12 6GK1 502-3CB00
SIMATIC NET OLM/G12-EEC 6GK1 502-3CD00
SIMATIC NET OLM/G11-1300 6GK1 502-2CC00
SIMATIC NET OLM/G12-1300 6GK1 502-3CC00
5
1 Introduction
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1 Introduction
The PROFIBUS OLM (Optical Link Module) product family consists of
OLM/P11,
OLM/P12,
OLM/G11,
OLM/G12,
OLM/G12-EEC,
OLM/G11-1300 and
OLM/G12-1300.
PROFIBUS OLMs are designed to be used in optical PROFIBUS field bus networks. They enable electrical PROFIBUS
interfaces (RS 485 level) to be converted into optical PROFIBUS interfaces and vice-versa.
By profiting from the familiar advantages of optical transmission technology, the modules can be integrated into
existing PROFIBUS field bus networks. A complete PROFIBUS field bus network with modules in line, star or ring
topology, and an arbitrary combination of these, can also be built up.
The redundant ring is also supported, thereby increasing the fail-safety of the field bus network.
Each module has two or three mutually independent ports, which in turn consist of a transmitting and a receiving
component.
The device is powered by 24V DC voltage. A redundant feed increases operational safety.
The electric port is a 9-pole Sub-D socket (female). An RS 485 bus segment in line with the PROFIBUS standard
EN 50170 can be connected to this port.
The optical fibers are connected using BFOC1) /2.5 connectors.
Four multicolored light-emitting diodes indicate the current operating status and possible operating malfunctions.
Operating voltage supply
/
signaling contact
5-pole terminal block
Port 1
electric,
Sub-D socket
Port 2
optical,
BFOC/2.5
socket
Port 3
optical,
BFOC/2.5
socket
LED Indicators
Measuring
sockets
CH 1
CH 1
System
PROFIBUS OLM
CH 2
CH 3
GND
Receive
Signal
Intensity
CH 2 CH 3
Fig.1: PROFIBUS OLM module showing the location of the LED
indicators, measuring sockets and the individual ports.
1) BFOC stands for Bayonett Fiber Optic Connector.
This connector type is functionally compatible with ST ®connectors.
ST is a registered trademark of AT&T.
6
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1 Introduction
Table 1 shows the different methods for connecting the modules, and the maximum optical ranges of each port.
OLM/ P11 P 12 G11 G12 G11-1300 G12–1300
G12-EEC
Number of ports
– electrical 1111 1 1
– optical 1212 1 2
Fiber types
–Plastic optical fibers
980/1000 µm 80 m 80 m ––––
–PCF optical fibers
200/230 µm 400 m 400 m ––––
Quartz glass optical fibers
10/125 µm –––– 15 km 15 km
50/125 µm ––3000 m 3 000 m 10 km 10 km
62.5/125 µm ––3000 m 3 000 m 10 km 10 km
Table 1: Number of electrical and optical ports per module, fiber types which can be used, as well as the maximum possible optical
fiber distances between two modules. See Technical Data, p. 31 for more details about ambient conditions.
PCF stands for Polymer Cladded Fiber, and is the same as HCS ®. HCS is a registered trademark of Ensign-Bickford
Optics Company.
One measuring output is available for each optical port where the optical input level can be measured using a
conventional voltmeter.
Different OLM malfunction reports are provided as an accumulative signal via a signaling contact (relay with
unconnected contacts) for further processing.
The mechanical design consists of a compact, stable metal housing which can be mounted on a hat rail or mounting
plate as required.
The module is configured using easily accessible switches.
The PROFIBUS OLM complies with the standard EN 50170 and the technical guidelines issued by the PROFIBUS
user organization, PNO, ”PROFIBUS optical transmission technology“.
OLM/G12 und OLM/G12-EEC have the same function. They only differ in the specification of the climatic ambient
conditions: while the OLM/G12 is suitable for employment in the standard temperature range from 0°C to 60°C,
the OLM/G12-EEC (extended environmental conditions) can be used in the extended temperature range from
–20°C to +60°C and at up to 100% humidity.
2.1 Non operating mode related functions
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2 General Functions
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2 General Functions
Transmission rate
The PROFIBUS OLMs support all the transmission speeds (transmission rates) defined in the EN 50170 standard:
9.6 kBit/s, 19.2 kBit/s, 45.45 kBit/s, 93.75 kBit/s, 187.5 kBit/s and 500 kBit/s,
and additionally
1.5 MBit/s, 3 MBit/s, 6 MBit/s and 12 MBit/s.
The transmission rate is set automatically as soon as the PROFIBUS OLM receives a frame. The setting or adjust-
ment is dependent on the transmission rate and the set operating mode. Depending on the OLM, this can last a
maximum of between 0.5 s (at 12 MBit/s) and 5 s (at 9.6 KBit/s).
If the transmission speed has not been recognized, the outputs of all ports are blocked. If the transmission rate
changes during operation, this is detected by the modules, which then automatically adjust their settings accordingly.
Transfer malfunctions may temporarily occur while the rate is being altered.
Signal regeneration
The modules regenerate the signal form and amplitude of the data received. This allows up to 122 PROFIBUS OLMs
to be cascaded (limited by the address space in PROFIBUS networks).
Help when setting up
At least one bus subscriber must be switched on and active in order to check the optical fiber connections during the
installation. This bus subscriber serves as the frame source. The PROFIBUS OLMs act passively when it is switched
on. They recognize the transfer speed from the frames sent by the bus subscriber. An optical help when putting the
device into operation is provided by the port LED which then lights up.
The operating mode is set using switches located on the top of the module. A sticker attached to the side of the
module provides assistance with the settings.
Segment monitoring at the RS 485 port
If the operating mode ”Electric port with segment monitoring“ is set, each receiver monitors the RS 485 bus segment
connected to it for faulty frames or continuously busy networks. If faulty frames are received by the receiver, or if the
network is busy for longer than the maximum permitted send time, forwarding of the received signals is blocked until
frames can be received again correctly, or if no signal is received for one second.
The RS 485 bus segment is not monitored in the operating mode ”Electric port without segment monitoring“.
Interference from the electrical segment affects the entire network.
Please observe the installation notes in 4.4.3. ”Connecting the electrical RS 485 bus lines“, p. 22 .
2.1 Non operating mode related functions
2.2 Operating mode related functions
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2 General Functions
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2 General Functions 2.2 Operating mode related functions
The following functions are only available for the optical ports. Whether the functions can be activated depends on
the operating mode which has been set. Please refer to the following chapters for details.
Line monitoring with echoes
The modules enable the connected optical paths to be actively monitored for interruptions in the fiber line by means
of the functions ”Send echo“, ”Monitor echo“ and ”Suppress echo“.
Send echo
A frame which is received by a module via any port is transmitted to all other ports. If the receiving port is an optical
port, the module sends the frame back to the corresponding optical sender.
Monitor echo
If a module sends a frame - no echo! – to an optical port, the module expects to receive an echo. If the echo is not
received after a predefined time, an echo monitoring error is indicated by a red LED belonging to the port.
Suppress echo
The relevant receiver is separated from the other ports from the moment a frame is sent until the echo has been
received correctly.
Segmentation
If an echo monitoring error or a frame falsification arises at an optical port, the module assumes that the line is faulty
and blocks this port for user data. The connected field bus partial network is then segmented (cut off). This segmen-
tation causes the module at the other end of the optical fiber to be segmented as well.
Both modules connected to the segmented field bus partial network send test frames to the segmented ports. These
test frames – which are to be received regularly – can be used by both modules to check the status of the field bus
partial network.
The segmentation is automatically lifted as soon as the test frames indicate to both modules that the segmented field
bus partial network is no longer disturbed.
If all active bus subscribers are deactivated in a previously active network, the modules are segmented cyclically in
order to check the fiber links to the neighboring modules. If there is no frame traffic, but the fiber links are intact,
the port LEDs of the optical ports flash yellow cyclically.
3.1 Line topology
9
3 Network Topologies
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3 Network Topologies
The following network topologies can be realized with the PROFIBUS OLM:
Point-to-point connections
Line topologies
Star topologies
Redundant optical rings
Combinations of these basic types are also possible. Lines with two optical fibers are used to create the fiber links for
these network topologies.
If a malfunction – e.g. a break in a fiber line – makes a high degree of field bus network fail-safety necessary, the
availability of the network can be increased using a redundant network configuration.
Please note:
Single terminals or entire PROFIBUS segments with max. 31 subscribers can be connected to the electrical
interface of the PROFIBUS OLM.
In areas with a high EMC incidence, only lay optical fiber lines in order to exclude the possibility of EMC
affecting the whole network.
Optically only OLMs of the same type can be connected together:
– OLM/P11 with OLM/P12
– OLM/G11 with OLM/G12 and OLM/G12 EEC
– OLM/G11-1300 with OLM/G12-1300
Optical ports which are connected by optical fiber must be set to the same operating mode.
Junctions between different OLM types are only possible via the RS485 interface.
OLM/G12-EEC can be used everywhere in those network topologies described below in which a OLM/G12 can
also be used.
3.1 Line topology
Fig. 2: Network structure in an optical line topology
CH 2
TR
CH 2
TR
CH 3
TR
OLM/P11
OLM/G11 (-1300)
OLM/P12
OLM/G12 (-1300)
CH 1
CH 1
Terminal unit /
bus segment
CH 2
TR
OLM/P11
OLM/G11 (-1300)
CH 1
Terminal unit /
bus segment
Terminal unit /
bus segment
CH 2
TR
CH 3
TR
OLM/P12
OLM/G12 (-1300)
CH 1
Terminal unit /
bus segment
RS 485 bus line
Optical fiber
10
3 Network Topologies
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3.1 Line topology
In a line structure, the individual PROFIBUS OLMs are connected together by dual-fiber optical fibers. Modules with
one optical port are sufficient at the beginning and end of a line, between which modules with two optical ports are
necessary.
If single point-to-point connections are to be built up, this can be achieved using two modules each with one optical
port.
The line topology can be realized with and without fiber link monitoring. If both operating modes are used within
an optical fiber line, the operating mode ”Line topology without fiber link monitoring“ determines the availability of
this fiber line. It is recommended that fiber link monitoring be used in homogeneous OLM networks (default factory
setting).
Please note that the following ambient conditions must be fulfilled to ensure that network configuration functions
correctly:
The parameters MIN TSDR described in the PROFIBUS standard EN 50170 must be set to a value ≥11 on
all terminals. This is usually the case, but the setting should be checked if communication malfunctions
continuously arise.
When configuring your network, select low bus subscriber addresses wherever possible. This ensures that
master timeout times which may arise are kept as short as possible in the event of a malfunction.
Refer to the manufacturer’s manual of the terminal concerned for details about how to alter the settings.
3.1.1 Line topology with optical fiber link monitoring and segmentation
This operating mode should preferably be used if an interrupted fiber segment is to be separated from the rest of the
network.
Only use this operating mode if you have just connected PROFIBUS OLMs together of the same version.
Monitoring mechanisms:
Send echo: yes
Monitor echo: yes
Suppress echo: yes
Monitor: yes
Segmentation: yes
In this operating mode the individual fiber links are monitored by the two connected modules.
If a module fails, an optical fiber breaks or faults are determined on the optical transfer link, the fiber link between the
two OLMs is interrupted (segmented). The PROFIBUS network is divided into two partial networks, which remain
functional independently of one other.
The malfunction is indicated at the two OLMs connected to the malfunctioning fiber link by the port LEDs switching
to red and by activation of the signaling contacts. The segmentation is lifted automatically as soon as both modules
recognize that the field bus network is functioning correctly with the help of test frames.
Please note that in the case of networks with several active bus subscribers, two logical token rings are formed in the
event of an error. Every time the partial networks are switched together, network malfunctions may arise due to the
double tokens or frame collisions.
Note:
If a module with two optical ports is used at the beginning or end of a line, the optical port which is not assigned
must be switched to the operating mode ”Line without fiber link monitoring“, so that it does not signal a break in the
fiber line.
Please note that optical ports which are not connected must always be fitted with protective caps to guard against
extraneous light and dirt.
3.1 Line topology
11
3 Network Topologies
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3.1.2 Line topology without optical fiber link monitoring
Use this operating mode if you connect a PROFIBUS OLM with another optical fiber network component, which does
not send a frame echo and does not expect or is not compatible with a frame echo in accordance with PROFIBUS
guidelines (optical/electrical converter).
Monitoring mechanisms:
Send echo: no
Monitor echo: no
Suppress echo: no
Monitor: no
Segmentation: no
Individual fiber links are not monitored in this operating mode.
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3 Network Topologies
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3.2 Star topology
3.2 Star topology
Fig. 3: Network structure in an optic star topology
Terminal unit /
bus segment
Terminal unit /
bus segment
Terminal unit /
bus segment
Terminal unit /
bus segment
Terminal unit /
bus segment
CH 2
TR
OLM/P11
CH 1
CH 2
TR
OLM/P11
CH 1
CH 2
TR
CH 3
TR
OLM/G12
CH 1
CH 2
TR
OLM/G11-1300
CH 1
OLM/P11
CH 2
TR
CH 1
OLM/G11-1300
CH 2
TR
CH 1
OLM/P11
CH 2
TR
CH 1
OLM/G11
CH 2
TR
CH 1
OLM/G11
CH 2
TR
CH 1
Electrical star segment
S0 = 1 S0 = 1 S0 = 1 S0 = 1 RS 485 bus line
Optical fiber
Several modules are combined to form an active PROFIBUS star coupler. Other modules are connected to this by
dual-fiber optical fiber lines. The modules of the star coupler are connected to one another via the electrical port
(electrical star segment).
All OLM types for different fiber types (plastic, PCF, glass) can be combined using the electrical star segment.
Please note:
CH1 in mode ”Monitor off“ (S0 = 1) must be activated on all OLMs which are connected to the electrical star
segment. This deactivates the segmenting function of the RS 485 port on these OLMs, providing a high degree
of availability of the electrical star segment.
Ensure that the electrical star segment is wired carefully. Keep it as small as possible to avoid interference
injection into the electrical star segment, and from here into the entire network. This can be achieved by laying
out the OLMs in the electrical star segment directly next to each other on a hat rail.
3.2 Star topology
13
3 Network Topologies
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Fig. 4: Network structure in a redundant optical ring topology
RS 485 bus line
Optical fiber
Terminal unit /
bus segment
OLM/P12
OLM/G12 (-1300)
CH 1
CH 3
TR
CH 2
TR
Terminal unit /
bus segment
OLM/P12
OLM/G12 (-1300)
CH 1
CH 3
TR
CH 2
TR
Terminal unit /
bus segment
OLM/P12
OLM/G12 (-1300)
CH 1
CH 3
TR
CH 2
TR
Terminal unit /
bus segment
OLM/P12
OLM/G12 (-1300)
CH 1
CH 3
TR
CH 2
TR
3.3 Redundant optical ring
Switch on the terminating resistors in the bus port connectors (see 4.4.3, ”Connecting the electric RS 485 bus
lines“, p. 22) at both ends of the electrical star segment.
Do not connect a bus subscriber to the electrical star segment wherever possible.
Modules with one or two optical ports can be used to create an active PROFIBUS star coupler. Modules with one
optical port are sufficient for connecting a terminal or an RS 485 bus segment to the active star coupler.
If the link monitoring on the optical ports is activated, the fiber optic links are monitored by the respectively connected
OLM.
Note:
Optical ports which are not assigned (for instance, because they are reserved for a future system extension) indicate
a fiber break if the link monitoring is activated.
You can prevent this error report from being issued by activating the operating mode ”Line without fiber link monito-
ring “ at the non-assigned ports.
Please note that optical ports which are not connected must always be fitted with protective caps to guard against
extraneous light and dirt.
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3 Network Topologies
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3.3 Redundant optical ring
This network topology represents a special form of line topology. A high degree of network operating safety is
achieved by ”closing“ the optical line. A redundant optical ring can only be realized with modules with two optical
ports of the same type.
Monitoring mechanisms:
Send echo: yes
Monitor echo: yes
Suppress echo: yes
Segmentation: yes
An interruption of one or both optical fibers between two modules is detected by the OLM and the ring is trans-
formed into an optical line.
If one module fails only those terminals connected to this module or the RS 485 segment are uncoupled from the
ring. The remainder of the network itself continues to function as a line. The error is indicated by the LEDs on the
two OLMs connected to the malfunctioning optical fiber and their signaling contacts. The segmentation is lifted auto-
matically as soon as both modules recognize that the segmented field bus network is functioning correctly with the
help of test frames. The line forms itself into a ring.
Please note:
The following ambient conditions must be fulfilled to ensure that the network configuration functions correctly:
Only use this operating mode if you optically connect PROFIBUS OLMs of the same version.
The operating mode ”Redundant optical ring“ must be set at both optical ports of all the PROFIBUS OLM.
All modules in a ring must be connected to one another by fiber lines. The ring may not include an RS 485
bus line.
The parameter MIN TSDR described in the PROFIBUS standard EN 50170 must be set to a value ≥11 on all
terminals. This is usually the case, but the setting should be checked if communication malfunctions
continuously arise.
When configuring your network, select low bus subscriber addresses wherever possible. This ensures that
master timeout times which may arise are kept as short as possible in the event of a malfunction.
If a redundancy case occurs (e.g. a line break), there is a switching time during which data cannot be correctly
transmitted. In order to ensure a smooth transition, it is recommended that the frame repeat setting (Retry) on
the PROFIBUS master be set to at least 3.
After the error has been corrected, no frames should be present in the network when the optical line is trans-
formed back into an optical ring to ensure that the process is completed smoothly. This condition can arise
when a master selects a device whose address has been configured, but which does not physically exist.
The master tries to address this device cyclically and waits for a reply only until the configured slot time has
been exceeded (”GAP request“). The OLM recognizes this condition and closes the optical line to an optical
ring in the middle of this request sequence.
This results in two configuration requirements for the redundant optical ring:
– The value of the parameter HSA (Highest Station Address) must be set at all terminals so that between the
bus address 0 and the value HSA at least one address in the network has not been assigned to a bus sub-
scriber, i.e. so that there is at least one address gap. This address gap can also be created by simply setting
the value of the parameter HSA so that it is at least one greater than the highest number of subscriber bus
addresses present in the network.
Attention: If this requirement is not or no longer fulfilled, the optical line will no longer be closed into a
redundant optical ring after segmentation. The error report (LED and signaling contact) of the two affected
OLMs is not cancelled even after the error has been corrected.
– The slot time must be set to approximately twice the value required in a non-redundant network. Further
information can be found in Chapter 6 ”Configuration“, p. 29.
Refer to the manufacturer’s documentation provided with the terminal or configuration software for details
about how to adjust the settings.
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4 Setting Up 4.1 Safety notice
4 Setting Up
Only use the PROFIBUS OLM as described in this ”Description and Operating Instructions“.
Pay particular attention to all the warnings and safety instructions.
Only operate the modules with a safety extra-low voltage in accordance with IEC 950/EN 60 950/VDE 0805 with
a maximum rating of +32 V (typically +24 V).
The power source must comply with NEC, Class 2, regulations as stipulated by UL/CSA.
Pay attention to the electrical limit values when connecting the power supply to the signaling contacts:
max. voltage 60 V DC, 42 V AC.
The connected power supply must also be safety extra-low voltage in accordance with IEC 950/ EN 60 950/
VDE 0805 and comply with NEC, Class 2, regulations as stipulated by UL/CSA.
DANGER: Never connect the PROFIBUS OLM to the main power supply.
Only install the device in a location where the climatic and mechanical limit values given in the Technical Data
can be complied with.
WARNING: Do not look directly into the aperture of the optical transmitting diode or the optical fiber.
The light beam which is emitted could endanger your eyesight.
OLM/P11
OLM/P12
OLM/G11-1300
OLM/G12-1300
The optical radiated power of the com-
ponents used in this device does not
represent a potential health hazard of any
description under normal, foreseeable
conditions, and it complies with Class 1 in
accordance with IEC 60825-1:1994+A1:1997
resp. the Degree of Endangerment 1 in
accordance with IEC 60825-2:1993.
OLM/G11
OLM/G12
OLM/G12-EEC
Non-visible LED radiation.
Do not look into the beam, not even with
optical instruments. LED class 1M.
Classification according
IEC 60825-1:1993+A1:1997+A2:2000.
4.1 Safety notice
16
4 Setting Up
Version 1.0 8/00
4.2 General information about setting up
4.2 General information about setting up
+24 V
+24 V *
Fault
L1+
L2+
M
F1
F2
NEC Class 2 24VDC, 200mA
01
S 6
S 7
S 1
S 0
S 2
S 4
S 5
S 3
Out. Power CH 3
Compatibility
Out. Power CH 2
Mode CH 1
Mode CH 2
Mode CH 3
Fig. 5: Top view of the Module OLM – location of the DIL
switches and terminal block for the operating power
supply/signaling contacts.
The illustration shows the factory settings of the
DIL switches (switches S0, S1, S2, S3, S4 and S7 in
Position "0", switches S5 and S6 in Position "1").
Select the network topology which is most suitable for your requirements. The modules can then be put into
operation in the following steps:
Check and adjust (if necessary) the DIL switch
Note: The DIL switches may only be operated in an ambient temperature of between 0°C and +60°C. This also
applies to the OLM/G12-EEC.
Mount the modules
Connect the power supply and the signaling contacts
Connect the electric RS 485 bus line with pre-mounted bus connector
Connect the optical bus lines
17
Version 1.0 8/00
4 Setting Up 4.3 Setting compatibility, operating mode and transmitting power
4.3 Setting compatibility, operating mode and transmitting power
Please note:
The OLM must be switched off when changing the operating mode.
You can switch off the OLM by, e.g., unplugging the 5-pin terminal block.
4.3.1 Setting the compatibility
The DIL switch S7 is used to switch the functional compatibility to devices of the preceding generation (SINEC L2FO
OLM/P3, -P4, -S3, -S4, S3-1300 and -S4-1300) either off or on. Default setting at S7 is Position 0 (compatibility is
switched off).
DIL switch S7 (compatibility) in Position 0:
compatibility to SINEC L2FO OLM/P3, -P4, -S3, -S4, -S3-1300, -S4-1300 switched off
DIL switch S7 (compatibility) in Position 1:
compatibility to SINEC L2FO OLM/P3, -P4, -S3, -S4, -S3-1300, -S4-1300 switched on
The functional compatibility to SINEC L2 Optical Link Modules of the preceding generation SINEC L2FO OLM/P3,
OLM/P4, OLM/S3, OLM/S4, OLM/S3-1300 and OLM/S4-1300 is switched on with the DIL switch S7=1.
This operating mode is required when operating this module together with new devices.
Only turn switch S7 to Position 1 if the PROFIBUS OLM is being used as a spare or expansion device in existing
networks in conjunction with OLMs of the preceding generation, and a direct optical connection is to be made.
The following illustrations show the switch assignment of the OLM at S7=1 for
Further information about adjusting the S7 in Position 1
can be found in the ”Description and Operating
Instructions SINEC L2 Optical Link Module OLM/P …,
OLM/S …“ for this SINEC L2 OLM.
SINEC L2FO
OLM/S3; OLM/S4;
OLM/S3-1300; OLM/S4-1300
OLM/S3, OLM/S3-1300:
S2 reserved
OLM/S3, OLM/S4,
OLM/S3-1300 und
OLM/S4-1300:
SINEC L2FO
OLM/P3; OLM/P4
OLM/P3 und OLM/P4:
OLM/P3: S6 reserved
S7 = 1 Compatibility Mode ON
S0 Reserved
S3,S4 Reserved
S1 Mode Monitor
0 Line/Ring On
1 Line Off
0Off
1On
S2 Redundancy
S7 = 1 Compatibility Mode ON
S0 Reserved
S1 Mode Monitor
0 Line/Ring On
1 Line Off
0Off
1On
S2 Redundancy
S5 Output Power CH3
0 Standard
1High
0 Standard
1High
S6 Output Power CH4
S3 Distance
0 Extended
1 Standard
S4,S5,S6 Reserved
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3
S 0
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3
S 0
18
4 Setting Up
Version 1.0 8/00
4.3 Setting compatibility, operating mode and transmitting power
4.3.2 Setting the operating mode
Attention! The following details only apply for the S7 default position (S7 = 0)!
The DIL switch S0 is used to set the operating mode of the electrical port CH1.
The DIL switches S1 and S2 are used to set the operating mode of the optical port CH2.
The DIL switches S3 and S4 are used to set the operating mode of the optical port CH3.
S3 and S4 do not have a function on OLMs with only one optical interface.
4.3.2.1 Setting the operating mode of the electrical port (CH1)
Operating mode ”Electrical Port with segment monitoring“
CH1 is activated in this operating mode if S0 is in Position 0.
Operating mode ”Electrical Port without segment monitoring“
CH1 is activated in this operating mode if S0 is in Position 1.
Please note that this operating mode should only be set in the star segment of the star topology.
4.3.2.2 Setting the operating mode of the optical ports (CH2, CH3)
The operating mode can be set individually for each optical port. Combinations of the operating modes "Line with
optical fiber link monitoring" and "Line without optical fiber link monitoring" are also possible.
Note that the operating mode of the two optical ports which are connected by the fiber line must always have the
same settings! The operating mode "Redundant optical ring" must always be set at both of the optical ports.
Operating mode ”Line with optical fiber link monitoring and segmentation“
CH3 is activated in this operating mode if S3 and S4 are in Position 0.
CH2 is activated in this operating mode if S1 and S2 are in Position 0.
Operating mode ”Line without optical fiber link monitoring“
CH3 is activated in this operating mode if S3 is in Position 1 and S4 is in Position 0.
CH2 is activated in this operating mode if S1 is in Position 1 and S2 is in Position 0.
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3 CH 3
CH 2
CH 3
CH 2
S 0 CH 1
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3 CH 3
CH 2
CH 3
CH 2
S 0 CH 1
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3 CH 3
CH 2
CH 3
CH 2
S 0 CH 1
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3 CH 3
CH 2
CH 3
CH 2
S 0 CH 1
4.3 Setting compatibility, operating mode and transmitting power
19
4 Setting Up
Version 1.0 8/00
Operating mode ”Redundant optical ring“
CH3 is activated in this operating mode if S3 and S4 are in Position 1.
CH2 is activated in this operating mode if S1 and S2 are in Position 1.
Note: This operating mode must always be set at both of the optical ports of
a module.
4.3.3 Reducing the optical transmitting power on the OLM/P11 and OLM/P12
Attention! The following details only apply for the S7 default position (S7 = 0)!
The OLM/P11 and OLM/P12 have a high level of optical transmitting power. Optical overloading may result if these
modules are connected with non-OLM devices using plastic optical fiber cables, particularly if short cable lengths
are used.
In this case the optical transmitting power can be reduced.
The DIL switch S5 is used to set the transmitting power of CH2.
The DIL switch S6 is used to set the transmitting power of CH3.
S6 does not have a function on the OLM/P11.
Leave S6 in Position 1 (default) if the optical fiber link to CH3 functions correctly in this position.
Leave S5 in Position 1 (default) if the optical fiber link to CH2 functions correctly in this position.
Switch S6 to Position 0 (reduced) if overloading is detected at a non-OLM device when using
plastic optical fiber cables to CH3.
Switch S5 to Position 0 (reduced) if overloading is detected at a non-OLM device when using
plastic optical fiber cables to CH2.
Note:
The DIL switches S5 and S6 on the OLM for glass optical fiber cables do not have a function (the optical transmitting
power cannot be reduced).
The transmitting power default setting (S5 or S6 in Position 1) must be set when using PCF fibers.
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3 CH 3
CH 2
CH 3
CH 2
S 0 CH 1
01
S 6
S 7
S 1
S 0
S 2
S 4
S 5
S 3 CH 3
CH 2
CH 3
CH 1
CH 2
01
S 6
S 7
S 1
S 2
S 4
S 5
S 3 CH 3
CH 2
CH 3
CH 2
S 0 CH 1
20
4 Setting Up
Version 1.0 8/00
4.4 Installation
4.4.1 Connecting the optical lines
Connect the individual modules using a dual-fiber optical fiber line
with BFOC/2.5 connectors.
Ensure
– that the end faces of the optical plugs are free of contamination.
– that respectively one optical input aand one optical output J
are connected to one another (crossover connection).
The BFOC port sockets which belong to one other are marked on
the bottom of the front plate.
– that the optical plugs on the BFOC socket are securely attached
(bayonet fastener must be slotted in).
Ensure that there is sufficient strain relief on the optical fiber line,
and pay attention to the minimum bend radius.
Seal BFOC sockets which have not been assigned using the sup-
plied protective caps (note: an optical port which has not been
assigned should be switched to the operating mode ”Line without
optical fiber link monitoring“ to avoid a break in the fiber line from
being signaled).
Extraneous ambient light can cause interference in the network,
especially under very bright conditions. Optical components can
be rendered useless if dust infiltrates them.
Please note the maximum length of the optical fiber line and the
possible fiber types which are shown in Table 1, p. 6 and in the
Technical Data, p. 31.
4.4 Installation
I
I
J
J
CH 2
CH 3
Fig. 6. View of the bottom of the module with
the optical ports 2 and 3
(device with two optical ports).
4.4 Installation
21
4 Setting Up
Version 1.0 8/00
4.4.2 Mounting the modules
The OLM modules can either be mounted on a 35 mm hat
rail in accordance with DIN EN 50022 or directly on to a
flat surface.
Install the device in a location where the climatic and
mechanical limit values defined in the Technical Data
can be complied with.
Ensure that there is sufficient room to connect the bus
and power supply cabling.
Connect the optical fiber line before mounting the
module. This is easier than connecting it after the
module has been installed.
Only mount the module on a low-impedance and
low-induction grounded hat rail or base plate. No
other grounding measures are required.
Mounting on a hat rail
Hang the top snap-in hooks of the module into the hat
rail and press the underside onto the rail (as shown in
Fig. 7) until it audibly clicks in.
To remove the module, pull down on the locking slide.
Mounting on a mounting plate
The modules have three through-holes. This allow it to be
mounted on any flat surface, e.g. on the mounting plate of
a switch cabinet.
Drill three holes in the mounting plate corresponding to
the drilling template in Fig. 8.
Secure the modules with machine bolts (e.g. M 3 x 40).
Ensure that there is a reliable electrical connection
between the module housing and the mounting plate.
Place toothed washers under the bolt heads to pierce
the varnish.
Fig. 8: Mounting a module on a mounting plate
Locking slide
Toothed washer
CH 1
CH 1
System
PROFIBUS OLM
CH 2
CH 3
GND
Receive
Signal
Intensity
CH 2 CH 3
61.2 mm
40.6 mm
81.2 mm
Ø 3 mm
Ø 3 mm
Fig. 7: Mounting a module on a standard hat rail
22
4 Setting Up
Version 1.0 8/00
4.4 Installation
4.4.3 Connecting the electric RS 485 bus lines
The modules are fitted with an RS 485 electrical port.
This is a 9-pin Sub-D socket with a screw lock (inside
thread UNC 4-40).
The pin assignment complies with the PROFIBUS stan-
dard. At Pin 6 there is a short circuit-proof 5V output for
supplying external pull-up/pull-down resistors.
As opposed to the 24V power supply and the casing
(ground potential), the RS 485 bus lines RxD/TxD–N and
RxD/TxD–P are indirect-coupled (functional separation)
within SELV restrictions.
Only use shielded and twisted-pair wiring as a RS 485 bus line as described in the manual ”SIMATIC NET
PROFIBUS networks“. Do not exceed the segment lengths given there.
Use a PROFIBUS bus connector plug to connect the RS 485 bus segment. If the module is at the beginning or
end of a bus segment, this connector must have an activated bus terminal resistor combination.
All PROFIBUS bus connector plugs in a network must be securely screwed onto the RS 485 interfaces.
Attaching or removing the bus connector plugs, inadequately attached bus connector plugs or loose bus wires
within the plug can lead to malfunctions in the optical and electrical networks.
Attach or remove the RS 485 bus connector plug quickly and without twisting them.
Remove the RS 485 bus line from the OLM if a device is not connected to the other end, or there is an OLM which
has been disconnected from the power supply. The open line otherwise acts as an antenna and can cause inter-
ference.
When connecting a RS 485 bus line to the PROFIBUS OLM in an active network, keep to the following sequence
in order to avoid interference:
1. Place the RS 485 bus connector plug onto the device which is to be connected (e.g. to a programming device)
and screw it on tightly.
2. Attach the RS 485 bus connector plug to the PROFIBUS OLM quickly and without twisting the connector, and
screw it on tightly.
Proceed in the reverse order when removing a device from the network
Ensure that the bus segment connected to the RS 485 interface is terminated at both ends. Only use a connecting
cable which is terminated at both ends to connect a single device.
Observe the following safety notice:
Do not connect any bus lines which have been partially or totally laid outside of buildings. Otherwise lightning strikes
in the vicinity of the cable could destroy the module. Use optical fiber lines for bus connections which lead out of a
building!
Fig. 9: Electrical port – assignment of Sub-D sockets
9 / n.c.
8 / RxD/TxD –N
7 / n.c.
6 / + 5 V Output
Ground
n.c.
RxD/TxD –P
Ground
PE
Shield
/ 5
/ 4
/ 3
/ 2
/ 1
23
Version 1.0 8/00
4 Setting Up 4.4 Installation
Fig. 10: Operating voltage supply – assignment of 5-pin terminal
block
Fig. 11: Signaling contact - relay with unconnected contacts;
the contact is open if a fault occurs
4.4.4 Connecting the power supply
The terminal block can be removed from the device to
connect the lines.
The module should only be supplied with a regulated
safety extra-low voltage in accordance with
IEC 950/EN 60 950/VDE 0805 with a maximum of
+32 V (typical +24 V). The power source must comply
with the regulations of the NEC, Class 2 in accordance
with UL/CSA approval.
It can be fed in using the 5-pin terminal block on the top
of the module.
To increase operational safety, the module can be
redundantly supplied via the terminals L2+/+24 V*
and M/m.
In the event of a failure of the regular power supply, the
module switches automatically to the redundant power
supply. Load distribution between the individual alter-
native supply sources does not take place.
The signaling contact does not signal the failure of a
single 24 V infeed. Both of the infeeds and the signa-
ling contact must be connected to an input module for
monitoring to take place.
Clips on the terminal block ensure that it is securely
attached to the device, and simultaneously provide
polarity reversal protection.
4.4.5 Connecting the signaling contact lines
The terminal block can be removed from the device to
connect the lines.
A relay with unconnected contacts as signaling contacts
is fitted to the 5-pin terminal block on the top of the
module. This signals faults and interference in the network
and modules. The contact is open if a fault occurs. This
also signals a total loss of power at the module.
Refer to Chapter 5.1 ”LED indicators“ p. 25 for more
details about malfunctions which are signaled by the
signaling contact.
Signaling contact limit values:
– maximum switching voltage 60 V DC; 42 V AC
– maximum switching current 1.0 A
The voltage connected to the relay must be regulated
safety extra-low voltage in accordance with IEC
950/EN 60 950/ VDE 0805 and must comply with the
regulations of the NEC, Class 2 in accordance with
UL/CSA approval.
L1+ / +24 V
F1
M /
F2
L2+ / +24 V*
F1 F2
24
4 Setting Up
Version 1.0 8/00
4.4 Installation
4.4.6 Defining the receiving level of the optical ports
The receiving level of the two optical Ports CH2 and CH 3
can be measured using a conventional voltmeter con-
nected to the measuring sockets. The voltmeter can be
connected and disconnected while the module is in
operation without any interference using 2 mm laboratory
test plugs.
The OLM is protected against short circuits at the measu-
ring sockets, although data transmission may be briefly
disrupted*.
With this
– the incoming optical performance can be documented,
e.g. for later measurements (ageing, damage)
– a good/poor check can be carried out (limit value).
Further information can be found in Appendix 8.4
”Measuring sockets“ p.35.
* Only an ungrounded, high-resistance voltmeter may be
used to take measurements.
The reference potential socket may not be connected to
the OLM housing.
CH 1
System
PROFIBUS OLM
CH 2
CH 3
GND
Receive
Signal
Intensity
CH 2 CH 3
Measuring sockets
Reference potential
Fig. 12: Signaling contact – pin assignment 5-pin terminal block
Pin assignment, 5-pin terminal block:
terminals F1 and F2.
Always ensure that the pins are correctly assigned at
the 5-pin terminal block. Make sure that the connecting
leads of the signaling contacts are adequately insula-
ted, particularly if you are working with voltages greater
than 32 V. Incorrect assignment can lead to destruction
of the module.
L1+ / +24 V
F1
M /
F2
L2+ / +24 V*
Fig. 13: Location of the measuring sockets
5.1 LED Indicators
25
5 LED Indicators and Troubleshooting
Version 1.0 8/00
5 LED Indicators and Troubleshooting
Fig. 14: LED indicators on the front plate
CH 1
System
PROFIBUS OLM
CH 2
CH 3
GND
Receive
Signal
Intensity
CH 2 CH 3
LED indicators
Possible causes
–The transmission rate has been recognized and the power supply is in order
–Power supply has failed (total failure*)
–Power supply connected incorrectly
–Module defective
Transmission rate has not yet been recognized
–No transmitting bus subscriber present
–No connection to a partner module sending frames
–Send and receive optical fibers have been transposed
–Transmission rate does not correspond to the PROFIBUS standard
–Only one active bus subscriber is connected, which is only sending tokens to
itself. The indicator must switch over after a second bus subscriber has been
activated (token frames on their own are not enough to set the transfer rate).
–The connected RS 485 segment is only terminated at one end.
Transmission rate recognized but
–the network slot time could not be determined (network parameter HSA is set
too low, no transmitting bus subscriber present)
–one optical port is set to ”Redundant optical ring“ mode, but not the second
(this operating mode must always be set at both optical ports)
–the slot time of the network configuration is too short
* failure of both power supply sources with redundant infeed
LED Indicator
System lights green
not lit
flashes red
flashes red/green
Signaling contact
no signal
signal
no signal
no signal
5.1 LED Indicators
26
5 LED Indicators and Troubleshooting
Version 1.0 8/00
Possible causes
Signals are being received on the RS 485 bus line
–Bus subscriber is not connected
–Connected bus subscriber is not switched on
–One or both conductors in the RS 485 bus line is broken
Sporadic interference signals because
–the RS 485 bus line being insufficiently shielded
–an open RS 485 bus line, i.e. it is only connected to the module at one end
–the RS 485 segment is not terminated or only terminated at one end
–an RS 485 bus terminal or terminal connector has been plugged in/ pulled out
Permanent interference because
–conductors A and B in the RS 485 bus line have been transposed
–of an RS 485 bus line short circuit
–the send time has been exceeded caused by a bus subscriber in a bus
segment connected to Port 1
–module and another bus subscriber connected via Port 1 are both sending at
the same time (e.g. because an address has been assigned twice, the setting
of the slot time is too low, or during lifting of the segmentation in the optical
line, see Chap. 3.1.1)
–RS 485 driver of the module is defective (e.g. after lightning strike)
PROFIBUS frames are being received at the optical port
Operating mode ”Line with optical fiber link monitoring“ and
”Redundant optical ring“
Transmission rate has not yet been recognized – LED ”System“ flashes red
–No transmitting bus subscriber present
–Send and receive optical fibers have been transposed
–No partner module connected or partner module is not switched on
–Connected partner module is defective
Transmission rate has been recognized - LED ”System“ flashes green
– If the operating mode ”Redundant optical ring“ has been set, the optical port
works as a stand-by port. There is no malfunction in the OLM or the optical
fiber.
– If one of the operating modes ”Line with optical fiber link monitoring …“ has
been set, no PROFIBUS frames are received at the optical port. There is no
malfunction in the OLM or the optical fiber.
Transmission rate has been recognized – LED ”System“ lights green or
flashes red/green
–No transmitting bus subscriber present (optical fiber connection is OK)
–Send and receive optical fibers have been transposed
–No partner module connected or partner module is not switched on
–Connected partner module is defective
–Send time of connected partner module has been exceeded
–An optical fiber line is broken
–Optical fiber link to partner module is too long
–Loose connection in an optical fiber connector
–Optical fiber in the optical fiber connector is loose
–When using a redundant optical ring: if a fault in the optical fiber has been
corrected but the port LEDs on both of the OLMs concerned still light red,
check whether parameter HSA has been set as described the in Chap. 3.3.
–Fault occurs periodically (see above)
–Loose connection in an optical fiber connector
–Optical fiber in the optical fiber connector is loose
–Only one active bus subscriber is connected, which only sends tokens to
itself. A fault should not be signaled as soon as a second subscriber is
activated.
Operating mode ”Line without optical fiber link monitoring“
Signals are received at the optical port.
–No transmitting bus subscriber present
–Send and receive optical fibers have been transposed
–No partner module connected or partner module is not switched on
–Connected partner module is defective
LED Indicator
CH1 lights yellow
electric not lit
flashes/lights red
CH2, CH3 lights yellow
optical
not lit
flashes yellow
lights red
flashes red/ yellow
lights yellow
not lit
Signaling contact
no signal
no signal
signal
no signal
no signal
no signal
no signal
signal
signal
no signal
no signal
5.1 LED Indicators
Table 2: What the LED indicators and signaling contacts mean
5.2 Troubleshooting
27
5 LED Indicators and Troubleshooting
Version 1.0 8/00
This chapter helps you to localize faults after they have been indicated (by LEDs or signal contacts). Please also refer
to the description of the LED indicators in 5.1, p. 25.
Fault indicated on the system LED
See description of the LED indicators in 5.1, p. 25.
Fault indicated on CH1
Check the following:
the DIL switch S0 is in Position 1 if the OLM is connected to the electrical star segment of a star topology
(see Chap. 3.2 ”Star topology“, p. 12).
the fault is still displayed after removal of the RS485 connector.
Still displayed: Device is defective*.
Replace the OLM.
No longer displayed: The fault lies in the RS485 bus segment.
Check
– all RS485 connectors as described in 4.4.3 ”Connecting the electrical RS 485 bus lines“,
p. 22
– the structure and shielding of the RS485 bus segment
– the RS485 bus segment using a PROFIBUS bus monitor
– the configuration of all bus subscribers.
* This is not the case if the monomaster of a PROFIBUS network is connected to the RS485
bus segment which is to be examined. Replace the OLM concerned with another OLM from
the network, and then carry out the test described above.
If the OLM still malfunctions when connected elsewhere, the device is defective.
Replace the OLM.
If the OLM does not malfunction elsewhere, the fault lies in the RS485 bus segment.
Carry out the measures described above.
Fault indicated on CH2 / CH3
1. Check the following:
optically only modules of the same type are connected together (see 3, ”Network topologies“, p. 9)
the optical fiber has been approved for the module type being used, and that it does not exceed the permitted
length (see Table 1, p. 6)
the optical ports, which are connected via optical fibers, have been set to the same operating mode (see 4.3,
”Setting compatibility, operating mode and transmitting power“, p. 17)
the settings given in 4.4.1, ”Connecting the optical lines“ (p. 20) have been observed when connecting and laying
the optical bus lines.
5.2 Troubleshooting
28
5 LED Indicators and Troubleshooting
Version 1.0 8/00
5.2 Troubleshooting
2. Define the optical receiving level (see 4.4.6 ”Defining the receiving level of the optical ports“, p. 24 and
8.4 ”Measuring sockets“, p. 35):
–Level is in the range ”Function is not guaranteed“.
Check the optical fiber absorption using an optical level measuring device.
too high: replace the optical fiber
in valid range: one of the two OLMs of the disturbed optical fiber segments is defective.
First replace the other OLM of the disturbed optical fiber segments (i.e. the OLM, which
supplies the send signal for the measurement described above). If the fault still persists,
replace the other OLM instead.
–Level is in the range ”Optical system reserves reduced“ or ”Normal mode“.
As described above, check the optical receiving level of the other OLM in the disturbed optical fiber
segment at the appropriate port.
–The levels at both OLMs of the disturbed optical fiber segments are in the range ”Optical system reserves
reduced“ or ”Normal mode": one of the two OLMs in the disturbed optical fiber segments is defective.
First replace one of the OLMs in the disturbed optical fiber segment. If the fault still persists, replace the
other OLM instead.
6.1 Configuration of optical line and star topologies
29
6 Configuration
Version 1.0 8/00
6 Configuration
During configuration, the PROFIBUS network parameter "Slot time" must be adapted to the network coverage,
network topology and the data rate due to frame delays caused by lines and network components, as well as by
monitoring mechanisms in the network components.
6.1 Configuration of optical line and star topologies
The following configuration conditions must be fulfilled in the redundant optical ring
(for details see Chap. 3.3 ”Redundant optical ring“, p.13):
(1) Configuration of a non-existent bus subscriber
(2) Increasing the retry value to at least 3
(3) Checking and adjusting the slot time
Use the user-specific profile of the configuration tool to set the parameters under (2) and (3).
Calculate the slot time with the following equation:
Slot time = a + (b .Length OF) + (c .Number OLM)
”Slot time“is the monitoring period in bit times
”Length OF“is the sum of all the optical fiber lines (segment lengths) in the network.
The length must be given in km!
”Number OLM“is the number of PROFIBUS OLMs in the network.
The factors a, b and c are dependent on the transmission rate and are listed in the tables below.
6.2 Configuration of redundant optical rings
The PROFIBUS network is configured, e.g. with SIMATIC STEP 7 (V5) or COM PROFIBUS (V5). The number of OLMs
(Number OLM) and overall line lengths can be entered in an input mask. The configuration tools control whether the
slot time in the selected communications profile can be retained. If this time is exceeded as a result of additional OLM
and optical fiber line runtimes, an error message is issued and the parameters are adapted accordingly.
30
Version 1.0 8/00
Configuration 6.2 Configuration of redundant optical rings
Data rate a b c
12 MBit/s 1) 1651 240 28
6 MBit/s 1) 951 120 24
3 MBit/s 1) 551 60 24
1.5 MBit/s 351 30 24
500 kBit/s 251 10 24
187.5 kBit/s 171 3.75 24
93.75 kBit/s 171 1.875 24
45.45 kBit/s 851 0.909 24
19.2 kBit/s 171 0.384 24
9.6 kBit/s 171 0.192 24
Table 3a: Constants for calculating the slot time at DP standard
(redundant optical ring)
Data rate a b c
12 MBit/s 1) 1651 240 28
6 MBit/s 1) 951 120 24
3 MBit/s 1) 551 60 24
1.5 MBit/s 2011 30 24
500 kBit/s 771 10 24
187.5 kBit/s 771 3.75 24
93.75 kBit/s 451 1.875 24
45.45 kBit/s 851 0.909 24
19.2 kBit/s 181 0.384 24
9.6 kBit/s 171 0.192 24
Table 3b: Constants for calculating the slot time at DP/FMS (”universal“)
and DP with S5 95U (redundant optical ring)
The calculation of the slot time only takes into consideration the optical network and the connection of bus sub-
scribers to the OLM via an RS 485 bus segment with a respctive length of max. 20 m. Longer RS 485 bus segments
must be allowed for by adding them to the Length OF .
Note:
When the slot time is configured with a too small value the OLM will, through it’s fault function and fault indications,
indicate such. The System-LED will blink red/green.
1) Using the OLM/G11-1300 and OLM/G12-1300 at data rates of 12 MBit/s, 6 MBit/s, 3 MBit/s and 1.5 MBit/s the
minimum slot times according to the following table must be met.
Data rate Minimum slot time
12 MBit/s 3800 tBit
6 MBit/s 2000 tBit
3 MBit/s 1000 tBit
1.5 MBit/s 530 tBit
Table 4: Minimum slot time on OLM/G11-1300 and
OLM/G12-1300
Use the values from Table 4 if the calculated slot time is smaller than the minimum slot time indicated in the table.
31
7 Technical Data
Version 1.0 8/00
OLM Module P11 G11 G11-1300
P12 G12 G12-1300
G12-EEC
Voltage/power supply
Operating voltage 18 V to 32 V DC, typ. 24 V, (redundant inputs uncoupled),
safety extra-low voltage, indirect-coupled
Current consumption max. 200 mA
Output voltage/current for terminal 5 V + 5%, –10%/90 mA; short circuit-proof
resistors (Pin 6 Sub-D socket)
Signaling contact
Maximum switch voltage 60 V DC; 42 V AC (safety extra-low voltage)
Maximum switch current 1.0 A
Signal transmission
Transmission rate 9.6; 19.2; 45.45; 93.75; 187.5; 500 kBit/s
1.5; 3; 6; 12 Mbit/s
Setting transmission rate automatic
Bit error rate < 10-9
Signal processing time (any input/output) ≤6.5 tBit
Retimer
Input Port 1 to 3
Signal distortion ±30 %
Bit length ± 0.12 %
Output Port 1 to 3
Mean bit length ± 0.01 %
Safety
VDE regulation VDE 0806 = EN 60950 and IEC 950
UL/CSA approval UL 1950/CSA 950
FM approval in preparation (Class 2)
Electrical port
Input/output signal RS 485 level
Input dielectric strength –10 V to +15 V
PIN assignment, port 1 in accordance with EN 50170 Part 1
Indirect-coupled yes, within SELV limits
Optical ports
Wavelength 660 nm 860 nm 1310 nm
Launchable optical power
– in glass fiber E 10/125 –––19 dBm
– in glass fiber G 50/125 ––15 dBm –17 dBm
– in glass fiber G 62.5/125 ––13 dBm –17 dBm
– in PCF fiber S 200/230
transmitting power ”Reduced“ –––
transmitting power ”Default“–17 dBm ––
– in plastic fiber S 980/1000
transmitting power ”Reduced“ –9.5 dBm ––
transmitting power ”Default“–5 dBm ––
Receiver sensitivity –25 dBm –28 dBm –29 dBm
Receiver overload –3 dBm –3 dBm –3 dBm
7 Technical Data
32
7 Technical Data
Version 1.0 8/00
OLM Module P11 G11 G11-1300
P12 G12 G12-1300
G12-EEC
Transmission distance
–with glass fiber E 10/125 ––0 - 15 000 m 2)
(0.5 dB/km)
–with glass fiber G 50/125 –0 - 3000 m 2) 0 - 10 000 m
(860 nm: 3.0 dB/km; 1310 nm: 1.0 dB/km)
–with glass fiber G 62,5/125 –0 - 3000 m 2) 0 - 10000 m
(860 nm: 3.5 dB/km; 1310 nm: 1.0 dB/km)
–with PCF fiber S 200/230
Transmitting power ”Reduced“– – –
Transmitting power ”Default“0 - 400 m 2) ––
(660 nm: 10.0 dB/km; 860 nm: 8.0 dB/km)
–with plastic fiber S 980/1000
Transmitting power ”Reduced“0 - 50 m ––
Transmitting power ”Default“0 - 80 m ––
(0.25 dB/m)
Connector BFOC/2.5
Electromagnetic compatibility (EMC)
Interference emissions Limit class B (EN 55022)
Interference immunity against static charges At shielded socket and housing parts: ±8 kV contact discharge
(EN 61000-4-2)
Immunity against high-frequency interference – 10 V/m at 80% amplitude modulation with 1 kHz,
– 80 MHz - 1 GHz (EN 61000-4-3)
– 10 V/m at 50% on-period at 900 MHz (ENV 50204)
– 10 V/m at 80% amplitude modulation with 1 kHz,
– 10 kHz - 80 MHz
Immunity against line-conducted disturbance On power supply lines and shielded
(Burst) RS 485 bus lines: ±2 kV (EN 61000-4-4)
Immunity against line-conducted disturbance – On power supply lines: ±1 kV symmetrical
(Surge) – On shielded RS 485 bus lines: ±2 kV asymmetrical
– (EN 61000-4-5)
Climatic ambient conditions
Ambient temperature 0 °C to +60 °C (IEC 68-2-1, IEC 68-2-2)
–20 °C to +60 °C at OLM/G12-EEC 1) (IEC 68-2-1, IEC 68-2-2)
Storage temperature –40 °C to +70 °C (IEC 68-2-14)
Relative humidity <95 %, non-condensing (IEC 68-2-30)
100 %, condensing at OLM/G12-EEC 1) (IEC 68-2-30)
Mechanical ambient conditions
Vibration (during operation) 10 to 58 Hz, 0.075 mm displacement;
58 to 150 Hz, 10 m/s2(1 g) acceleration (IEC 68–2–6)
Vibration (during transport) 5 to 9 Hz, 3.5 mm displacement;
9 to 500 Hz, 10 m/s2(1 g) acceleration
Protection class IP 40
Dimensions (W x H x D) 39.5 x 110 x 73.2 mm
Housing material Die-cast zinc
Weight approx. 500 g
1) The OLM/G12 can also be supplied in a special design for more severe environmental conditions. This variant is designated the OLM/G12-EEC.
The DIL switches on the OLM/G12-EEC may also only be operated at ambient temperatures between 0°C and + 60°C.
2) The specified distance allowed between two OLMs must not be exceeded regardeless of the optical power budget.
The module does not contain any silicon.
8.1 CE Designation
33
8 Appendix
Version 1.0 8/00
8.1 CE Designation
Product Designation SIMATIC NET
OLM/P11 6GK1502-2CA00
OLM/P12 6GK1502-3CA00
OLM/G11 6GK1502-2CB00
OLM/G12 6GK1502-3CB00
OLM/G11-1300 6GK1502-2CC00
OLM/G12-1300 6GK1502-3CC00
OLM/G12-EEC 6GK1502-3CD00
EMC Directive The SIMATIC NET products named above fulfill the requirements of the following
EC directives:
Directive 89/336/EEC
"Electromagnetic Compatibility"
Application The product is designed for use in the following areas:
Observe assembly The product complies with the specifications if the assembly guidelines and safety
guidelines instructions are observed during installation and operation as described in this
”Description and Operating Instructions SIMATIC NET Optical Link Modules“ and
the following documentation:
SIMATIC NET PROFIBUS Networks Manual
Declaration of In accordance with the above-named EC directive, the EC Declaration of Conformity
Conformity can be viewed by the authorities responsible at:
Siemens AG
Bereich Automatisierungs- und Antriebstechnik
Geschäftszweig Industrielle Kommunikation SIMATIC NET
Postfach 4848
D-90327 Nürnberg
Machine Directive Furthermore, the product is a component in accordance with Article 4(2) of the
EC Machine Directive 89/392/EWG.
In accordance with the Machine Directive, we are obliged to draw attention to the fact that
the designated product is solely designed for installation in a machine. Before the end product
is put into operation, it must be ensured that it conforms with the directive 89/392/EEC.
Area of Requirement for
application Interference emissions Interference immunity
Domestic, business and EN 50081-1: 1992 EN 50082-1: 1997
commercial use, as well
as in small factories
Industrial plants EN 50081-2: 1993 EN 50082-2: 1995
8 Appendix
34
8 Appendix
Version 1.0 8/00
8.2 Literature notes
8.2 Literature notes
– Manual SIMATC NET PROFIBUS Networks SIEMENS AG 6GK1970-5CA20-0AA0 (German)
6GK1 970-5CA10-0AA1 (English)
6GK1 970-5CA10-0AA2 (French)
6GK1 970-5CA10-0AA4 (Italian)
– EN 50170-1-2 1996:
„General Purpose Field Communication System“, Volume 2 „Physical Layer Spezification and Service Definition“
– DIN 19245:
„Messen, Steuern, Regeln; PROFIBUS Teil 3; Process Field Bus; Dezentrale Peripherie (DP)“
(”Measuring, controlling, governing; PROFIBUS Part 3; Process Field Bus; Decentral Periphery Devices (DP)“)
– EIA Standard RS–485 (April 1983): „Standard for electrical characteristics of generators“
8.3 List of abbreviations
BFOC Bayonet Fiber Optic Connector
DIN Deutsche Industrie Norm (German Industrial Standard)
EEC Extended Environmental Conditions
EIA Electronic Industries Association
EN Europäische Norm (European Standard)
EMC Electromagnetic Compatibility
HCS™Hard Polymer Cladded Silica Fiber
(registered trademark of Ensign-Bickford)
IEC International Electrotechnical Commission
LED Light Emitting Diode
OBT Optical Bus Terminal
OLM Optical Link Module
PCF Polymer Cladded Fiber
(equal to HCS™)
PNO PROFIBUS Nutzer Organisation (PROFIBUS User Organization)
SELV Secure Electrical Low Voltage
UL Underwriter Laboratories
VDE Verein Deutscher Elektroingenieure
(Association of German Electrical Engineers)
8.4 Measuring sockets
35
8 Appendix
Version 1.0 8/00
8.4 Measuring sockets
Normal operation
0 100 200 300 400 500 600 700 800 900
Output voltage [mV]
Signal
quality
good
critical
poor
Reduced optical system reserves
Function not guaranteed
Diagram 1: Assignment of measured output voltage to signal quality.
Notes:
In order to attain a valid reading, it is necessary for the partner OLM at the other end of the optical fiber to send
regular PROFIBUS frames. This can be seen on the LED display of the partner OLM (see 5, ”LED Indicators and
Troubleshooting“, p. 25).
The output voltage at the measuring sockets is subject to many influencing factors, such as:
the strength of the transmitting power of the partner OLM
the ambient temperature of the optical sender and receiver
attenuation of the transmitting link
the transfer rates being used
The measuring sockets are therefore not intended as a substitute for a calibrated level measuring device with a
calibrated light source.
The readings taken should only serve to classify the optical signal being received in the 3 classes
good (normal operation)
critical (reduced optical system reserves)
poor (function not guaranteed)
Measurements must be taken with a conventional ungrounded and high-resistance voltmeter. A connection to the
OLM housing is not permitted either from the measuring sockets or the reference potential.
36
8 Appendix
Version 1.0 8/00
8.5 SIMATIC NET - Support and Training
SIMATIC Training Centers
We offer courses designed to enable you to familiarize yourself with the SIMATIC S7 automation system.
Please contact your regional Training Center or the Central Training Center in 90327 Nuremberg, Germany.
Internet: http://www.ad.siemens.de/training
E-Mail: AD-Training@nbgm.siemens.de
SIMATIC Customer Support Hotline
Available worldwide 24 hours a day:
Nuremberg (Nürnberg) Johnson City Singapore (Singapur)
SIMATIC BASIC Hotline SIMATIC BASIC Hotline SIMATIC BASIC Hotline
Local time: Mo - Fr 8:00 to 18:00 Local time: Mo - Fr 8:00 to 17:00 Local time: Mo - Fr 8:30 to 17:30
Telephone: +49 (911) 895-7000 Telephone: +1 423 461-2522 Telephone: +65 740-7000
Fax: +49 (911) 895-7002 Fax: +1 423 461-2231 Fax: +65 740-7001
E-Mail: simatic.support@ E-Mail: simatic.hotline@ E-Mail: simatic.hotline@
nbgm.siemens.de sea.siemens.com sae.siemens.com.sg
SIMATIC Premium Hotline
(rates charged, only with SIMATIC Card)
Time: Mo - Fr 0:00 to 24:00
Telephone: +49 (911) 895-7777
Fax: +49 (911) 895-7001
8.5 SIMATIC NET - Support and Training
8.5 SIMATIC NET - Support and Training8 Appendix
SIMATIC Customer Support On-line Services
The SIMATIC Customer Support offers you comprehensive additional information about SIMATIC products with its
on-line services:
General current information is available on the Internet at
http://www.ad.siemens.de/net
Current product information and downloads, which could be useful when using our products, are available
on the Internet at
http://www.ad.siemens.de/csi/net
Source for special cables
Special cables and cable lengths for all SIMATIC NET cables are available on request from
A&D SE V22
WKF Fürth, Germany
Mr. Hertlein
Telephone: +49 (911) 750-4465
Fax: +49 (911) 750-9991
E-Mail: juergen.hertlein@fthw.siemens.de
Further support
If you have any more questions about SIMATIC NET products, please contact your Siemens contact partner at your
local or regional branch office.
The addresses can be found
– in our catalogue IK 10
– on the Internet at http://www.ad.siemens.de
© Siemens AG 1999
Subject to alteration
Siemens AG Order No. 6ZB5530-3AD00-0BA0
Printed in Germany
Contents
Introduction 1
The SIMATIC NET PROFIBUS
OBT Product 2
Functional Description 3
Network Topology 4
Installation and Startup 5
Troubleshooting 6
Technical Specifications 7
Notes on the CE Label 8
References 9
Abbreviations 10
Release 2
C79000-G8976-C122-02
PROFIBUS Optical Bus
Terminal (OBT)
Manual
SIMATIC NET
Index-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
!Danger
indicates that death, severe personal injury or substantial property damage will result if proper
precautions are not taken.
!Warning
indicates that death, severe personal injury or substantial property damage can result if proper
precautions are not taken.
!Caution
indicates that minor personal injury or property damage can result if proper precautions are not taken.
Note
draws your attention to particularly important information on the product, handling the product, or to a
particular part of the documentation.
Qualified Personnel
Only qualified personnel should be allowed to install and work on this equipment Qualified persons are
defined as persons who are authorized to commission, to ground, and to tag circuits, equipment, and sy-
stems in accordance with established safety practices and standards.
Correct Usage
Note the following:
!Warning
This device and its components may only be used for the applications described in the catalog or the
technical description, and only in connection with devices or components from other manufacturers which
have been approved or recommended by Siemens.
This product can only function correctly and safely if it is transported, stored, set up, and installed cor-
rectly , and operated and maintained as recommended.
Trademarks SIMATICR, SIMA TIC HMIR and SIMATIC NETR are registered trademarks of SIEMENS AG.
Third parties using for their own purposes any other names in this document which refer to trademarks
might infringe upon the rights of the trademark owners.
Safety Guidelines
This manual contains notices which you should observe to ensure your own personal safety , as well as to
protect the product and connected equipment. These notices are highlighted in the manual by a warning
triangle and are marked as follows according to the level of danger:
We have checked the contents of this manual for agreement with the hard-
ware and software described. Since deviations cannot be precluded entirely ,
we cannot guarantee full agreement. However, the data in this manual are
reviewed regularly and any necessary corrections included in subsequent
editions. Suggestions for improvement are welcomed.
Disclaimer of LiabilityCopyright Siemens AG 1998 All rights reserved
The reproduction, transmission or use of this document or its contents is not
permitted without express written authority. Offenders will be liable for
damages. All rights, including rights created by patent grant or registration of
a utility model or design, are reserved.
Siemens AG
Bereich Automatisierungstechnik
Geschäftsgebiet Industrie-Automatisierung
Postfach 4848, D-90327 Nürnberg E Siemens AG 1998
Subject to technical change.
Siemens Aktiengesellschaft Order no. C79000–G8976–C122
i
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Contents
1 Introduction 1-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 The SIMATIC NET PROFIBUS OBT Product 2-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Functional Description 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.1 Interfaces 3-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.2 Optoelectric Signal Conversion and Signal Regeneration 3-1. . . . . . . . . . . . .
3.3 Automatic Transmission Rate Detection 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.4 Supported FO Fiber Types 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.5 Displays 3-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3.6 Operator Controls 3-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4 Network Topology 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1 Optical Bus 4-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.2 Using Long Fiber Optic Sections 4-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.3 Attaching RS-485 Segments 4-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5 Installation and Startup 5-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.1 Precedure for Installation 5-2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5.2 Installation 5-3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6 Troubleshooting 6-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7 Technical Specifications 7-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8 Notes on the CE Label 8-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9 References 9-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10 Abbreviations 10-1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contents
Contents
ii PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Contents
1-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Introduction
The PROFIBUS OBT (Optical Bus Terminal) is a network component for use in
optical PROFIBUS DP fieldbus networks. It allows the attachment of a single
device without an integrated optical interface to the optical PROFIBUS DP. The
following figure illustrates a typical configuration.
1) PROFIBUS cable (terminated at both ends)
2) Plastic FO cable or PCF FO cable with two fibers
PC
Programming Device
Operator Panel
SIMATIC S7-400
with IM 467 FO
ET 200M with
FO interface DP node without
FO interface
2)
1)
2)
2)
1)
OBT OBT
ÀÀ
ÀÀ
ÀTerminating resistor activted
Figure 1-1 Example of an Optical PROFIBUS DP Configuration
1
Introduction
1-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Connections
The connection between the individual nodes takes the form of an optical bus with
two-fiber plastic FO cables (plastic fiber-optic cables are also known as POF,
Polymer Optical Fiber) or PCF FO cables (PCF = Polymer Cladded Fiber,
corresponds to HCSt 1) fiber-optic cable). Since fiber-optic cables are
completely insensitive to electromagnetic disturbance, no grounding concept
whatsoever is necessary. For the same reason, equipotential bonding is also not
necessary. The optoelectronic conversion provides automatic isolation so that
differences in potential as can occur in extensive systems have no effect.
1) HCSt is a registered trademark of Ensign-Bickford Optics
Company and stands for “Hard Polymer Cladded Silica Fiber”.
Sensitivity
Just as fiber-optic cable is insensitive to electromagnetic noise, a fiber-optic cable
emits no electromagnetic noise into the environment. Sensitive electronic devices
close to the fiber-optic cable therefore need no additional protection or noise
suppression.
Power Supply
The OBT requires an operating power supply of 24 V direct voltage that is
connected via two terminal screws.
Operating Mode
LEDs signal the current mode and any problems in operation.
Mechanical Design
The optical bus terminal consists of a compact plastic casing which can be
installed either on a standard rail or on any flat surface.
2-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
The SIMATIC NET PROFIBUS OBT Product
Supplied
1 x PROFIBUS OBT
1 x order form for the PROFIBUS OBT operating instructions
Not supplied
SPlastic fiber–optic cable, can be purchased by the meter
STools for connectoring fiber-optic cables
SPROFIBUS OBT operating instructions
SFiber-optic cable connectors
2
The SIMATIC NET PROFIBUS OBT Product
2-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
3-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Functional Description
The OBT is a repeater with 3 channels.
3.1 Interfaces
The OBT has the following interfaces for attachment to PROFIBUS DP segments:
SChannel 1 (CH1) is an electrical RS-485 interface. This is implemented as a
9-pin D SUB female connector. A single PROFIBUS DP node can be connected
via this channel or a PC, PG or OP can be connected to the OBT. The
maximum permitted segment length is 100 m. The copper segment should,
however, be kept as short as possible since disturbances can be coupled into
the optical PROFIBUS DP from this segment.
SChannel 2 (CH2) and channel 3 (CH3) are optical interfaces. They are designed
as duplex sockets. The end of a two-fiber plastic or PCF fiber-optic cable with
two simplex connectors is connected to each of these duplex sockets.
The OBT also has a block with three terminals for connecting the 24 V power
supply and, if necessary, a grounding conductor.
3.2 Optoelectric Signal Conversion and Signal Regeneration
The OBT converts the RS-485 level signal received at channel 1 into an optical
signal level that is then output via channel 2 and channel 3.
Signals received in channel 2 or 3 are converted to electrical signals and
Soutput on channel 1 as an electrical signal
Schanged back to an optical signal and then output again on the other optical
channel.
The receive channels have no echo, in other words received signals are not sent
back on the same channel.
The OBT regenerates the signals in amplitude and time. This allows up to 126
modules to be cascaded in an optical bus. The cascading depth is limited solely by
the monitoring times of the attached devices.
The propagation delay per OBT is 6 bit times.
3
Functional Description
3-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
3.3 Automatic Transmission Rate Detection
The OBT supports all PROFIBUS transmission rates (12 Mbps , 6 Mbps, 3 Mbps,
1.5 Mbps, 500 Kbps and 187.5 Kbps, 93.75 Kbps, 45.45 Kbps, 19.2 Kbps, 9.6
Kbps).
The transmission rate is detected automatically. No settings are necessary.
3.4 Supported FO Fiber Types
The OBT supports the fiber types listed in the table below:
Table 3-1 Distance Covered by Fiber-optic Cable between Two Devices on the Optical
PROFIBUS DP
Fiber Type Distance Between Two Devices
Plastic FO 980/1000 µm with 2 fibers
and max. 200 dB/km cable attenuation
0.1 m to 50 m
PCF FO 200/230 µm with 2 fibers and
max. 10 dB/km cable attenuation
0 m to 300 m
The specified distances between the devices assume that the partner devices use
the same optical components as the OBT. This is, for example, the case with the
IM 153-2 FO, IM 467 FO and OLM 12M.
The transmission rate is independent of the type of fiber used and the cable length.
It can be up to 12 Mbps.
The following accessories are available:
SPlastic FO cable (sold in meters), connectors, polishing set and tools for
connectoring plastic FO cables
The plastic fiber-optic cables are supplied with connectors. The plastic simplex
connectors can be fitted with the available tools on site.
SPCF FO cable (with connectors)
PCF cables in fixed lengths are available with 4 simplex connectors already
fitted.
3.5 Displays
The OBT has 4 LEDs for displaying the various states.
Functional Description
3-3
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
L+ 24V (green)
Unlit: No power supply or internal power supply is
defective or short-circuited
Flashes: Power supply present; Transmission rate
not yet set
Lit green: Transmission rate set, power supply
O.K.
CH1, CH2 , CH3 (channel 1 to 3, yellow)
Unlit: No data being received
Lit yellow: Data being received
L + 24V
CH1
CH2
CH3
CH2 CH3
Figure 3-1 LED Displays on the Front Panel
Functional Description
3-4 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
3.6 Operator Controls
The OBT itself does not have operator controls. Care must simply be taken that
the PROFIBUS connecting cable (not supplied) attached to Channel 1 is
terminated at both ends.
4-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Network Topology
4.1 Optical Bus
The OBT is operated in conjunction with other SIMATIC devices, for example the
IM 153-2 FO or IM 467 FO on the optical PROFIBUS DP in the form of an optical
bus.
Individual PROFIBUS DP nodes with an RS-485 interface are connected to
channel 1 of the OBT via a maximum 100 m long PROFIBUS cable with bus
connectors fitted at both ends. The terminating resistors on the bus connectors
must be activated. An active or passive PROFIBUS DP node can be connected.
The OBT can be included at any point in the optical bus. If it is included at the start
or end, the unused optical channel must be closed with the rubber plug supplied.
This prevents contamination of the optical elements and disturbances caused by
light entering the module.
The connection forming the optical bus is a two-fiber plastic FO cable (maximum
length 50 m) or PCF FO cable (maximum length 300 m). The fiber-optic cables
have two simplex connectors at each end.
The fiber-optic connection between two devices is established by connecting the
optical sender of one device with one fiber to the optical receiver of the other
device and the optical receiver of the one device to the optical sender of the other
device (cross-over connection).
If an OBT or a fiber-optic cable fails, the entire network becomes two subnets.
Depending on the location of the problem, individual devices may no longer be
accessible.
The OBT does not support the creation of single-fiber rings, of monitored optical
busses or redundant ring structures.
4
Network Topology
4-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
4.2 Using Long Fiber Optic Sections
The maximum permitted length of PCF FO cables with the OBT is 300 m. If longer
distances are required with fiber-optic cables, then other fiber-optic types such as
graded glass fibers or monomode fibers are necessary and these can be used in a
combination of OBT with OLM (Optical Link Module). The OBT is then connected
electrically to the OLM (for example OBT/CH 1 to OLM/CH 1) and the OLM is
attached to the long fiber-optic section. At the other end of the fiber-optic section,
the arrangement is reversed by another OLM/OBT pair.
PC
PG
OP
SIMATIC S7-400
with IM 467 FO ET 200M with
FO interface
1) PROFIBUS cable (terminated at both ends)
2) Plastic FO cable or PCF FO cable with two fibers
3) FO cable for long distances
ÀTerminating resistor activted
2)
3)
1)
2)2)
1)
OBT OBT OLM/G11 OLM/G11 OBT
1)
À
À
À
À
À
À
Figure 4-1 Example of Including Long Fiber-optic Segments with OBT and OLM
The maximum permitted transmission rate and the type and maximum length of
the fiber-optic segment are determined by the OLM type.
Network Topology
4-3
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
4.3 Attaching RS-485 Segments
The OBT allows the attachment of a single PROFIBUS DP node. To attach
RS-485 segments with more than one node, a further network component is
available, the OLM 12M. The requirement for using the OLM 12M is that the
PROFIBUS DP network is operated at a transmission rate of 187.5 Kbps, 500
Kbps, 1.5 Mbps or 12 Mbps.
The optical channels of the OLM 12M can be connected as follows with the OBT or
with other SIMATIC devices on the optical PROFIBUS DP:
The connection is established with a two-fiber plastic FO cable (maximum length
50 m) or PCF FO cable (maximum length 300 m). The fiber-optic cable has two
simplex connectors at each end. The optical channel of the OLM 12M connected
to the OBT must be operated in the “Line“ mode with the monitoring deactivated.
1) PROFIBUS cable
(terminated at both ends)
2) PROFIBUS cable
3) PROFIBUS connector (not terminated)
4) Plastic FO or PCF FO with two fibers
ET 200M without
FO interface DP node without
FO interface SIMATIC S7-400
with IM 467 ET 200M without
FO interface
ÀTerminating resistor activted
2)
2)
2)
3)
4) 4)
1) 1)
OBT OBT
OBT
ÀÀ
À
À
ÀÀ
3)
Figure 4-2 Example of Attaching RS-485 Segments
Network Topology
4-4 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
5-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Installation and Startup
Note
Use the PROFIBUS OBT only as described in this manual.
Note
Pay particular attention to all warnings and safety–related instructions.
Note
The PROFIBUS OBT must only be operated with a safety extra-low voltage
(SELV) complying with IEC 950/ EN 60 950/ VDE 0805 with a maximum of +32 V
(typically +24 V). The power source must comply with the regulations of NEC
class 2 according to the UL/CSA approval.
Note
Do not look directly into the opening of the optical transmitter diode. The emitted
light could injure your eyes.
!Danger
Never connect the PROFIBUS OBT to a power supply of 110 V – 240 V.
Note
Select the installation location so that the climatic limit values listed in the technical
specifications can be adhered to.
5
Installation and Startup
5-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Note
The RS-485 channel CH1 of the PROFIBUS OBT is electrically isolated from the
24V input. This isolation is required for correct functioning and is not a safety
measure.
Note
Make sure that the PROFIBUS OBT is adequately grounded by connecting the rail
or mounting plate to local ground with low resistance and low inductance.
Note
As the RS-485 cable, use only LAN cables approved for PROFIBUS.
Note
Do not open the OBT casing.
5.1 Precedure for Installation
Installation of the PROFIBUS OBT involves the following steps:
SInstalling the PROFIBUS OBT
SConnecting the power supply
SConnecting the optical cables
SAttaching the electrical RS-485 LAN cable.
Installation and Startup
5-3
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
5.2 Installation
Installing the PROFIBUS OBT
PROFIBUS OBT can be installed either on a 35 mm standard rail with a height of
15 mm in compliance with DIN EN 50 022 – 35 x 15 or directly on a level surface.
SSelect the installation location so that the climatic limit values listed in the
technical specifications can be adhered to.
SMake sure there is enough space for connecting the bus and power supply
cables.
SInstall the modules only on a low-resistance and low-inductance grounded
standard rail or mounting plate. If you secure the modules on a mounting plate,
make sure that as short a cable as possible leads from the ground terminal of
the OBT to the nearest possible ground point.
Installation on a Standard rail
SFit the upper catch of the module onto the standard rail and push in the lower
part of the module as shown in Figure 5-1 until it audibly clicks into position.
SThe module is removed by pulling down the locking bar.
Figure 5-1 Installation of a Module on a Standard Rail
Installation and Startup
5-4 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Installation on a Mounting Plate
PROFIBUS OBTs have two holes drilled in them. This allows them to be installed
on any flat surface, for example on the mounting plate of a cubicle.
SDrill two holes in the mounting plate as shown in the drill template in Figure 5-2.
SSecure the modules with machine screws (for example M3 x 75 and M3 x 55).
SUse a grounding conductor with at least 2.5 mm2 to establish a reliable
electrical connection between the PE terminal of the module casing and the
grounded mounting plate.
CH1
SIMATIC NET
PROFIBUS
Optical
Bus Terminal
6GK1500–3AA00
1 2 3 4 5 6 7
L + 24V
CH1
CH2
CH3
CH2 CH3
PE ML+
NEC CLASS2
24VDC, 200 mA
42.5
67.3
Figure 5-2 Installing a Module on a Mounting Plate
Installation and Startup
5-5
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Instructions for Connectoring Plastic Fiber–Optic Cables (with photos)
You can download a detailed instruction brochure with photos illustrating how to
connector plastic fiber–optic cables from the Internet:
SGerman: http://www.ad.siemens.de/csi/net
SEnglish: http://www.ad.siemens.de/csi_e/net
Select SEARCH on this page and enter the number 574203 in the Entry ID box
and start the search.
Connecting the Power Supply
PE ML+
NEC CLASS2
24VDC, 200 mA
Figure 5-3 Layout of the Terminal Block – Ground Terminal PE and Power Supply
Terminals M, L+
SThe power supply for the PROFIBUS OBT must be a stabilized safety extra-low
voltage complying with IEC 950 / VDE 0805, minimum +18 V and maximum
+32 V (typically +24 V). The power source must meet the specifications of NEC
class 2 to comply with the UL/CSA approval. The unit is intended to be installed
on the load side of the class 2 or class 3 power source as defined by the
National Electric Code (NEC), Article 725–2
The module must be wired correctly according to the National Electrical code
(NEC) complying with NEC Article 725–52, 725–54, 725–61 and 725–71.
SIf the PROFIBUS OBT is not installed on a grounded rail, a grounding
conductor with a cross-section of 2.5 mm2 should be connected from the PE
terminal to the nearest possible ground point.
Installation and Startup
5-6 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Connecting the Optical Cables
ABCD
Figure 5-4 V iew of the Module from Below with the Optical Channels CH2 and CH3
A = CH2, optical receiver
B = CH2, optical sender
C = CH3, optical receiver
D = CH3, optical sender
SConnect the individual PROFIBUS OBTs using a duplex FO cable, fitted with
two pairs of simplex connectors.
SMake sure that in each case an optical input is connected to an optical output
(crossover).
SMake sure that there is reliable strain relief for the FO cable and do not bend
the cable beyond the minimum bending radius.
SClose unused FO sockets with the plastic plugs provided. Extraneous light,
particularly when it is extremely bright can cause disturbances on the
PROFIBUS network.
SRemember the minimum and maximum length of the FO cable and the
permitted fiber types specified in Table 1 and in the technical specifications.
SYou should also make sure that no dust can enter the optical components. Dust
in optical components can make them unusable.
SThe fibers of the cable must be flush with the front surface of the connector.
Installation and Startup
5-7
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Note
If the fiber protrudes beyond the surface of the connector, the connector must not
be inserted into the socket otherwise the optical components can be permanently
damaged.
Connecting the Electrical RS–485 Cable
Channel CH1 is used to connect a single PROFIBUS DP DTE. CH1 is designed as
an electrical RS 485 interface with a 9-pin sub D female connector. The maximum
cable length between the OBT and DTE is 100 m. Since this involves a
point-to-point connection, the terminating resistors in the PROFIBUS connectors
must be activated at both ends of the cable.
Use only SIMATIC NET shielded Twisted Pair cables as the RS 485 cable for
PROFIBUS.
Do not connect RS 485 cables when all or part of the cable is outside a building.
Lightning in the area can otherwise destroy the PROFIBUS OBTs. If connections
exit the building, use FO cables whenever possible!
Remove the RS 485 cable from the OBT if there is no node connected to the other
end of the cable. Noise can lead to problems on the PROFIBUS network.
Installation and Startup
5-8 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
6-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Troubleshooting
Table 6-1
LED Display Possible Cause of Problem
L+ 24V LED not lit - Power outage
- OBT defective
L+ 24V LED flashing - The transmission rate could not be set
CH1 LED not lit - Break on one or more wires of the RS-485 LAN cable
- Wires A and B of the RS-485 LAN able connected to wrong terminals
- Attached PROFIBUS node is defective or not sending
- PROFIBUS node not attached or attached node is not turned on
CH1 LED lit
But PROFIBUS nodes signa-
ling bus problems
- Wires A and B of the RS-485 LAN able connected to wrong terminals
- Short-circuit on the RS-485 LAN cable
- Break on one of the wires of the RS-485 LAN cable and wires A and B con-
nected to wrong terminals
- No or wrong termination
CH2, CH3 LED not lit - Send and receive FO cords swapped over
- Break on FO cord receiving receiving from partner module
- No partner module connected or partner module is not turned on
- Attached partner module is defective (not sending)
CH2, CH3 LED lit
But PROFIBUS nodes signa-
ling bus problems
- FO connector is loose
- FO cable distance to next module too long
- Receive FO cord interrupted and disturbance caused by extraneous light
If none of the LEDs indicates a problem and you still encounter communication
problems (for example no confirmation, unexpected frames), check the monitoring
times set on the PROFIBUS nodes (such as the Slot Time).
For more detailed information on these parameter settings, refer to the description
of your PROFIBUS DTEs and the configuration software.
6
Troubleshooting
6-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
7-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Technical Specifications
Table 7-1 Technical Specifications
Technical Specifications
Power supply (safety extra–low voltage with reliable
isolation, SELV or complying with NEC Class 2) 24 VDC (18 V to 32 V)
Power consumption at 24 V input max. 200 mA
Transmission rate 12 Mbps, 6 Mbps, 3 Mbps, 1.5 Mbps, 500 Kbps, 187.5
Kbps , 93.75 Kbps, 45.45 Kbps, 19.2 Kbps, 9.6 Kbps
Transmission rate setting made automatically
Mode optical bus
Bit error rate <10–9
Input channel 1 to channel 3
Bit length
Jitter 0.7 to 1.3 tBit
-0.03 to +0.03 tBit
Output channel 1 to 3
Bit length
Jitter 0.99 to 1.01 tBit
-0.003 to +0.003 tBit
Signal delay time (any input/output) ≤ 6 tBit
Cascading depth of optical bus limited only by signal run time
Electrical channel
Input/output signal RS–485 level
Input dielectric strength -7 V to +12 V
Minimum current at 5V (for terminating resistors) 10 mA
Electrical isolation from 24V input Isolation due to function; not safety–related!
Optical channels
Optical source LED
Coupled optical power
– in plastic fiber 980/1000
– in PCF fiber 200/230
PT(min) PT(max)
– 5.9 dBm +0.5 dBm
– 16 dBm –1.5 dBm
Receiver sensitivity
– with plastic fiber 980/1000
– with PCF fiber 200/230
PR(min) PR(max)
–20 dBm 0 dBm
–22 dBm –2 dBm
7
Technical Specifications
7-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Wavelength 640 nm to 660 nm
Permitted FO cable attenuation
(with link power margin)
– for plastic fiber 980/1000
– for PCF fiber 200/230
13 dB
3 dB
Transmission distance with 3dB link power margin
– with plastic fiber 980/1000
with max. 200 dB/km cable attenuation
– for PCF fiber 200/230
with max. 10 dB/km cable attenuation
0.1m to 50m
0 m to 300m
FO connector Simplex / duplex
Electromagnetic compatibility (EMC)
Noise emission Limit class A (EN 55022)
Immunity to static discharge On shield connection and casing: ±6 kV contact di-
scharge (IEC 1000–4–2)
Immunity to high frequency interference 10 V/m at 80% amplitude modulation at 1kHz,
80MHz – 1GHz (ENV 50140; IEC 61000–4–3)
10V/m at 50% on time at 900MHz
(ENV 50 204)
10 V/m at 80% amplitude modulation at 1kHz,
10kHz – 80MHz (ENV 50141)
Immunity to conducted interference
(burst)
On power supply cables and shielded RS 485 LAN
cables: ±2 kV
(IEC 61000–4–4)
Immunity to conducted interference
(surge)
On power supply cables: ±1 kV balanced
On shielded RS 485 LAN cables: ±2 kV unbalanced
(IEC 61000–4–5)
Safety
VDE requirements VDE 0806=EN60950 and IEC950
UL/CSA approval complying with UL1950/CSA950
Climatic conditions
Ambient temperature 0 °C to +60 °C
(IEC 68–2–1, IEC 68–2–2)
Storage temperature -40 °C to +70 °C
(IEC 68–2–14)
Technical Specifications
7-3
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Relative humidity < 95% (no condensation)
(IEC 68–2–30)
Mechanical conditions
Vibration during operation 10 to 58 Hz, 0.075 mm deflection
58 to 150 Hz, 10m/s2 (1g) acceleration
(IEC 68–2–6)
Vibration during transportation 5 to 9 Hz, 3.5 mm deflection
9 to 500 Hz, 10m/s2 (1g) acceleration
Type of protection (with external fusing ≤8A) IP 30
Weight 400 g
Dimensions 50.5 x 138 x 78 mm
Casing material Noryle anthracite
Technical Specifications
7-4 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
8-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Notes on the CE Label
Product Name:
Optical Bus Terminal PROFIBUS OBT, Order no.: 6GK1500–3AA00
EU Directive EMC 89/336/EEC
The product listed above meets the requirements of the EU directive 89/336/EEC
“Electromagnetic Compatibility” in an industrial environment.
Area of application Requirements
Noise emission Noise immunity
Industrial EN 50081–2 : 1993 EN 50082–2 : 1995
Conformity Certificates
The EU conformity certificates are available for the relevant authorities according
to the EU directive and are kept at the following address:
Siemens Aktiengesellschaft
Bereich Automatisierungstechnik
Industrielle Kommunikation (A&D PT2)
Postfach 4848
D–90327 Nürnberg
Germany
Installation Instructions
The product meets the requirements above when it is installed and operated
according to the instructions in the Optical Bus Terminal PROFIBUS OBT
documentation.
The accessible radiated power of the transmitting LEDs used complies with class 1
EN 60825–1:1994 + A11:1996 or IEC 60825–1:1993 incl. amendment 1:1997 LED
class 1
The accessible radiated power if the fiber cable is opened accidentally or
deliberately corresponds to degree of danger 1 in compliance with EN
60825–2:1994 or 60825–2:1993
Information for Manufacturers of Machines
The product remains a component according to article 4(2) of the EU directive on
machines 89/392/EEC.
8
Notes on the CE Label
8-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
According to the directive on machines, we are obliged to point out that this
product is intended solely for installation in a machine. Before the final product can
be put into operation, it must be tested for compliance with the directive
89/392/EEC.
Notes for Australia
SIMATIC NET OBT meets the requirements of AS/NZS 2064 (Class A) standard.
9-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
References
/1/ Wrobel, Christoph (Herausgeber):
“Optische Übertragungstechnik in industrieller
Praxis”, Hüthig Buch Verlag GmbH, Heidelberg 1994
/2/ G. Mahlke, P Gössig:
“Lichtwellenleiterkabel: Grundlagen, Kabeltechnik”
3. Auflage, Berlin 1992
SIMATIC NET PROFIBUS is based on the following standards and directives
/3/ EN 50170–1–2: 1996
General Purpose Field Communication System
Volume 2 : Physical Layer Specification and Service Definition
PROFIBUS Users Organization:
/4/ PROFIBUS Implementation Instructions for DIN 19245 Draft
Part 3
Version 1.0 dated 14.12.1995
/5/ EIA Standard RS–485 (April 1983):
“Standard for electrical characteristics of generators
and receivers for use in balanced digital multipoint systems”
/6/ SIMATIC NET Manual for PROFIBUS Networks
SIEMENS AG order number: 6GK19705AC10–0BA0
/7/ SIMATIC NET Industrial Communication Catalog IK10
SIEMENS AG
Bereich Automatisierungstechnik
Geschäftszweig Industrielle Kommunikation SIMATIC NET
Postfach 4848
D–90327 Nürnberg
Germany
8/ SIMATIC NET Product Information Installation Instructions for
SIMATIC NET PROFIBUS
Plastic Fiber Optic with Simplex Connectors
These instructions can be downloaded from the Internet
– German: http://www.ad.siemens.de/csi/net
– English: http://www.ad.siemens.de/csi_e/net
Select SEARCH on this page and
enter the number ”574203” in the “Entry ID” box
and start the search.
/9/ SIMATIC NET Description and Operating Instructions OLM 12M
SIEMENS AG order number: 6ZB5530–3AB00–0BA0
9
References
9-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
10-1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
Abbreviations
DIN Deutsche Industrie Norm (German industrial standard)
ESD Electrostatic discharge
EN European standard
EMC Electromagnetic compatibility
FO Fiber–optic
IEEE Institute of Electrical and Electronic Engineers
ISO/OSI International Standards Organization / Open System
Interconnection
HCStHCSt is a registered trademark of Ensign–Bickford
Optics Company and stands for
“Hard Polymer Cladded Silica Fiber”.
In these instructions, only the
general term PCF is used.
LAN Local Area Network
LED Light Emitting Diode
OBT Optical Bus Terminal
OLM Optical Link Module
PCF Polymer Cladded Fiber, synonymous with HCSt fiber
POF Polymer Optical Fiber; synonymous with plastic FO cable
PROFIBUS DP PROFIBUS Distributed I/Os
SELV Safety extra–low voltage
UL Underwriter Laboratories
VDE Verein Deutscher Elektroingenieure (association of
German electrical and electronics engineers)
10
Abbreviations
10-2 PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
From:
YourName: _____________________________
YourTitle: ____________________________
Company Name: __________________________
Street: __________________________
City, Zip Code __________________________
Country: __________________________
Phone: __________________________
Please check any industry that applies to you:
rAutomotive
rChemical
rElectrical Machinery
rFood
rInstrument and Control
rNonelectrical Machinery
rPetrochemical
rPharmaceutical
rPlastic
rPulp and Paper
rTextiles
rTransportation
rOther ___________
1
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
$
An
Siemens AG
SIMATIC NET A&D PT2
Postfach 4848
D–90327 Nürnberg
2
PROFIBUS Optical Bus Terminal (OBT)
C79000-G8976-C122-02
If you encountered any specific problems, please explain below:
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
Remarks Form
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and return it to Siemens.
Please give each of the following questions your own personal mark within the range
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H-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
General Information
H.1 Abbreviations/Acronyms
Al Aluminum
AS–Interface Actuator–Sensor Interface
AWG American Wire Gauge
BER Bit Error Rate
BFOC Bayonet Fiber Optic Connector
CP Communications Processor
CSMA/CD Carrier Sense Multiple Access/Collision Detection
Cu Copper
DIN Deutsche Industrie Norm (German industrial standard)
DP Distributed (peripheral) I/Os
ESD Electrostatic discharge
EIA Electronic Industries Association
EN European standard
EMC Electromagnetic compatibility
FC Fast Connect
FMS Fieldbus Message Specification
FO Fiber Optics
FRNC Flame Retardant Non Corrosive
HCS Hard Cladded Silica
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronic Engineers
ILM Infrared Link Module
ISO/OSI International Standards Organization / Open System Interconnection
ITP Industrial Twisted Pair
H
General Information
H-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
IR Infrared
LAN Local Area Network
LED Light Emitting Diode
MPI Multipoint Interface
NRZ Non Return to Zero
OBT Optical Bus Terminal
OLM Optical Link Module
OP Operator Panel
PCF Polymer Cladded Fiber
PE Polyethylene
PG Programming device
PMMA Polymethylmethacrylate
PNO PROFIBUS User Organization
POF Polymer Optical Fiber
PROFIBUS–DP PROFIBUS distributed I/Os
PROFIBUS–PA PROFIBUS Process Automation
PTB Physikalisch–Technische Bundesanstalt (German official body)
PUR Polyurethane
PVC Polyvinylchloride
SELV Safety Extra–Low Voltage (to EN 60950)
UL Underwriter Laboratories
UV ultraviolet
V Value factor
VDE Verein Deutscher Elektroingenieure (association of German electronics engineers)
I-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
References
Standards, Manuals and Further Information
EN 50170–1–2: 1996
General Purpose Field Communication System
Volume 2 : Physical Layer Specification and Service Definition
PNO Guideline:
PROFIBUS Implementation Guide to DIN 19245 Part 3 (Draft)
Version 1.0, dated 14.12.1995
PNO Guideline:
Fiber Optical Data Transfer for PROFIBUS
Version 2.1 dated 12.98
EIA RS–485: 1983
Standard for Electrical Characteristics of Generators and Receivers
for Use in Balanced Digital Multipoint Systems
IEC 61158–2 to 6: 1993/2000
Digital data communications for measurement and control –
Fieldbus for use in industrial control systems
DIN VDE 0100 Teil 410
Errichten von Starkstromanlagen mit Nennspannungen bis 1000 V;
Schutzmaßnahmen; Schutz gegen gefährliche Körperströme
and
DIN VDE 0100 Teil 540
Errichten von Starkstromanlagen mit Nennspannungen bis 1000 V;
Auswahl und Errichtung elektrischer Betriebsmittel; Erdung,
Schutzleiter, Potentialausgleichsleiter
/1/
/2/
/3/
/4/
/5/
/6/
I
References
I-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
DIN EN 60950,
Safety of information technology equipment including electrical office
equipment
(IEC950; 1991, modified and IEC 950A1; 1992
German Version EN 60950; 1992 + A1: 1993
DIN Deutsches Institut für Normung e.V. Berlin
VG 95375, Teil 3
Elektromagnetische Verträglichkeit, Grundlagen und Maßnahmen für
die Entwicklung von Systemen,
Teil 2: Verkabelung, Dezember 1994
DIN Deutsches Institut für Normung e.V. Berlin
SIMATIC S5 Distributed I/O System ET 200
SIEMENS AG
Order no. EWA 4NEB 780 6000–01c,
Version 4
SIMATIC S7–400 Programmable Controller
Installation and Application
Brochure
SIEMENS AG
Order no. 6ES7498–8AA00–8BB0,
Version 1
SIMATIC S7–300 Programmable Controller,
Hardware and Installation Manual
SIEMENS AG
Part of the “S7–300, M7–300 Documentation Package,
Order no. 6ES7 398–8AA02–8BA0”
SIMATIC S7-400, M7-400 Programmable Controller
Hardware and Installation Manual
SIEMENS AG
Part of the “S7–400, M7–400 Documentation Package,
Order no. 6ES7 398–8AA02–8BA0”
SIMATIC DP/PA Bus Coupling
Manual
SIEMENS AG
Order no. 6ES7157–0AA00–0BA0,
Version 2
/7/
/8/
/9/
/10/
/11/
/12/
/13/
References
I-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
S7–300, M7–300, ET 200M Modules with
Intrinsically Safe Signals
Reference Manual
SIEMENS AG
contained in the “Manual for S7–300 in the EXCi) Area, Installation
Instructions and Module Data Sheets”
Order no. 6ES7 398–8RA00–8BA0
S7–300, M7–300, ET 200M Principles of Intrinsically–Safe Design
Manual
SIEMENS AG
contained in the “Manual for S7–300 in the EXCi) Area, Installation
Instructions and Module Data Sheets”
Order no. 6ES7 398–8RA00–8BA0
Further Information
You will find further information on the topic of intrinsic safety and explosion
protection in:
SManual S7-300, M7-300, ET 200M Modules with Intrinsically Safe Signals
(Order no. 6ES7 398-8RA00-8BA0)
SUntersuchungen zur Eigensicherheit bei Feldbus-Systemen; PTB-Bericht W-53,
Braunschweig, März 1993
SPROFIBUS-PA Installation Guideline, Technical Guidance for Use of IEC
1158-2 with PROFIBUS–PA, No. 2.091
PROFIBUS User Organization e. V., Haid-und-Neu-Str. 7, D-76131 Karlsruhe,
Germany
Order Numbers
The order numbers of the SIEMENS documentation listed above can be found in
the catalogs SIMATIC NET Industrial Communication, Catalog IK 10” and
”SIMATIC Programmable Controllers SIMATIC S7 / M7 / C7”.
You can order these catalogs and obtain further information and details of available
training courses from your local SIEMENS office or national head office.
-
/14/
/15/
References
I-4 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
J-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
SIMATIC NET – Support and Training
SIMATIC Training Center
To help you to become familiar with the SIMATIC S7 automation system, we offer a
range of courses. Please contact your regional training center or the central
training center in D 90327 Nürnberg, Germany. Infoline: Tel. +49 180 523 5611
Fax. +49 180 523 5612
Internet: http://www.ad.siemens.de/training
E-mail: AD–Training@nbgm.siemens.de
SIMATIC Customer Support Hotline
Open round the clock, worldwide:
Johnson City
Nuremberg
Singapore
SIMATIC Basic Hotline
Nuremberg
SIMATIC BASIC Hotline Johnson City
SIMATIC BASIC Hotline Singapore
SIMATIC BASIC Hotline
Local time: Mo.-Fr. 8:00 to 18:00
Phone: +49 (911) 895-7000
Fax: +49 (911) 895-7002
E-Mail: simatic.support@
nbgm.siemens.de
Local time: Mo.-Fr. 8:00 to 17:00
Phone: +1 423 461-2522
Fax: +1 423 461-2231
E-Mail: simatic.hotline@
sea.siemens.com
Local time: Mo.-Fr. 8:30 to 17:30
Phone: +65 740-7000
Fax: +65 740-7001
E-Mail: simatic.hotline@
sae.siemens.com.sg
J
SIMATIC NET – Support and Training
J-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
SIMATIC Premium Hotline
(Calls charged, only with
SIMATIC Card)
Time: Mo.-Fr. 0:00 to 24:00
Phone: +49 (911) 895-7777
Fax: +49 (911) 895-7001
SIMATIC Customer Support Online Services
The SIMATIC Customer Support team provides you with comprehensive additional
information on SIMATIC products in its online services:
SYou can obtain general current information:
–On the Internet at http://www.ad.siemens.de/net
–Using fax polling no. 08765 - 93 02 77 95 00
SCurrent Product Information leaflets and downloads which you may find useful
for your product are available:
–On the Internet at http://www.ad.siemens.de/csi/net
–Via the Bulletin Board System (BBS) in Nuremberg (SIMATIC Customer
Support Mailbox) under the number +49 (911) 895-7100.
To access the mailbox, use a modem with V.34 (28.8 Kbps) capability whose
parameters you should set as follows: 8, N, 1, ANSI, or dial in using ISDN
(x.75, 64 Kbps).
Ordering Special Cables, Accessories, and Tools
Special cables and special lengths of all SIMATIC NET LAN cables as well as
accessories, tools and measuring equipment can be obtained from:
A&D SE V22
WKF Fürth
Hr. Hertlein
Tel.: +49 911 /750–4465
Fax: +49 911/750–9991
email: juergen.hertlein@fthw.siemens.de
Further Support
if you have further questions on SIMATIC NET products, please contact your
Siemens representative in your local Siemens office.
You will find the addresses listed
Sin our catalog IK 10
Son the Internet (http://www.ad.siemens.de)
-
Glossary-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Glossary
Baud rate –> Transmission rate
Bus Common transmission path on which all nodes are connected; it has two defined
ends.
In PROFIBUS, the bus is a twisted-pair cable or a fibre-optic cable.
Bus connector
Physical connection between the node and LAN cable.
In SIMATIC NET, there are bus connectors with and without sockets for the PG
with the degree of protection IP 20.
Bus segment
³ Segment
Bus system
All stations that are physically connected via a LAN cable form a bus system.
Chassis ground
Chassis ground includes all the interconnected inactive parts of equipment that
must not carry a hazardous voltage even in the event of a fault.
Configuring
Configuring means entering a PROFIBUS configuration with all the specific para-
meters using, for example, STEP 7 or COM PROFIBUS.
d.c. loop resistance
Total resistance of the outward and return line of a cable.
Glossary
Glossary-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Electromagnetic compatibility (EMC)
Electromagnetic compatibility (EMC) deals with all questions of electrical, ma-
gnetic and electromagnetic emission and immunity and the functional disturban-
ces in electrical devices resulting from these effects.
Fiber-optic cable (FO)
A fiber-optic cable is a transmission medium in an optical network.
FISCO A model (FISCO – Fieldbus Intrinsically Safe COncept) created by the PTB in
cooperation with well–known manufacturers describing one method of implemen-
ting an “i” fieldbus for use in hazardous areas. This model is characterized by
there being only one “active” device, the bus power supply, connected to the
fieldbus. The other devices are all “passive” in terms of their ability to supply
power to the cable. The characteristics of the cables do not influence the intrinsic
safety (within certain limits).
GAP factorGAP update factor. The gap between the local PROFIBUS address of the ma-
ster to the next PROFIBUS address of a master is known as the GAP. The GAP
update factor specifies how many token rotations the master waits before chek-
king whether there is another master in the GAP.
For example, if the GAP update factor is 3, this means that each master checks
whether a new master is located between its own PROFIBUS address and the
PROFIBUS address of the next master after approximately 3 token rotations.
Ground Ground is the conductive ground area whose potential at any point can be taken
as zero.
GroundingGrounding means connecting a conductive part to ground via a grounding sy-
stem.
GSD Device data bases (GSD files) contain DP slave descriptions in a uniform format.
The use of GSD files makes it easier to configure the master DP slave.
IP 20 Degree of protection complying with DIN 40050: Protection against touch with
fingers and against the penetration of solid foreign bodies with more than 12 mm
∅.
Glossary
Glossary-3
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
IP 65 Degree of protection complying with DIN 40050: complete protection against
touch, protection against the penetration of dust and protection against jet water
from all directions.
IP 66 Degree of protection complying with DIN 40050: complete protection against
touch, protection against penetration of dust and protection against damaging
penetration of heavy seas or strong jet water.
IP 67 Degree of protection complying with DIN 40050: complete protection against
touch, protection against penetration of dust and protection against damaging
penetration of water at a certain pressure during immersion.
ITP Industrial Twisted Pair; bus system based on the Twisted Pair standards IEEE
802.3i: 10BASE-T and IEEE 802.3j: 100BASE-T for industrial application.
Lightning arresters
are capable of diverting multiple lightning currents or parts of them without any
damage occurring.
Lightning protection equipotential bonding
The lightning protection equipotential bonding includes the parts of the indoor
lightning protection system required to reduce the potential differences caused
by lightning currents, for example, the equipotential bonding bars, the equipoten-
tial bonding conductors, terminals, connectors, isolating spark gaps, lightning
arresters, surge voltage arresters
Master When a master is in possession of the token, it can send data to other nodes
and request data from other nodes (= active node).
Master-slave technique
Bus access technique in which only one node is the ³ master and all other no-
des are ³ slaves.
Max. retry limit
Max. retry limit is a bus parameter and specifies maximum number of call repeti-
tions to a DP slave.
Glossary
Glossary-4 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Max_TSDR Max_TSDR is a bus parameter and specifies the maximum protocol processing
time of the responding node (station delay responder).
Min_TSDR Min_TSDR is a bus parameter and specifies the minimum protocol processing
time of the responding node (station delay responder).
Node A device that can send and receive data on PROFIBUS as a master or slave.
Optical power budget (FO)
This is available between a sender and receiver on a fiber-optic link. It indicates
the difference between the optical power coupled into a particular fiber by the
optical transmitter and the input power required by an optical receiver for reliable
signal detection.
Optical power loss (FO)
The optical power loss is the cumulative value of all the losses occurring in the
fiber-optic transmission path. These are due mainly to the attenuation of the fiber
itself and the splices and couplings. The optical power loss must be less than the
optical power budget available between the transmitter and receiver.
PROFIBUSPROcess FIeld BUS, European process and fieldbus standard specified in the
PROFIBUS standard (EN 50 170, Volume 2, PROFIBUS).
This specifies the functional, electrical and mechanical characteristics of a bit-se-
rial fieldbus system.
PROFIBUS is a bus system that networks PROFIBUS-compatible automation
systems and field devices at the cell and field level. PROFIBUS exists with the
DP protocol (= Distributed Peripheral I/Os), FMS protocol (= Fieldbus Message
Specification) or PA protocol (= Process Automation).
PROFIBUS address
To identify it uniquely, every station must be assigned a PROFIBUS address.
A PC/PG or the ET 200 Handheld have the PROFIBUS address ”0”.
Master and slaves have a PROFIBUS address in the range 1 to 125.
Glossary
Glossary-5
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
PROFIBUS-DP
PROFIBUS bus system with the DP protocol. DP stands for distributed periphe-
ral I/Os.
The main task of PROFIBUS-DP is the fast, cyclic data exchange between the
central DP master and the peripheral devices.
PROFIBUS-FMS
PROFIBUS bus system with the FMS protocol. FMS stands for Fieldbus Mes-
sage Specification.
Reaction time
The reaction time is the average time that elapses between the change at an
input and the corresponding change at an output.
Redundancy
This means that standby equipment exists that is not required for the basic func-
tioning of a system. If equipment fails, the standby can take over its function.
Example:
Medium redundancy
An additional link closes the bus to form a ring. If there is a failure on part of the
bus, the redundant link is activated to maintain the functionality of the network.
Reference potential
The voltages of circuits are considered and/or measured relative to this potential.
RS-485 repeater
Device for amplifying bus signals and coupling ³ segments over large distances.
Segment The LAN cable between two terminating resistors forms a segment. A segment
can contain a maximum of 32 bus attachments (–>nodes, –>RS-485 repeaters
–>OLMs, ...). Segments can be interconnected by ³ RS-485 repeaters.
Shield impedance
Resistance to alternating current of the cable shield. Shield impedance is a cha-
racteristic of the cable used and is normally specified by the manufacturer.
Signal propagation time
The time required by a data packet on its way through the network.
Glossary
Glossary-6 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
SIMATIC NET PC modules
SIMATIC NET PC modules are modules for coupling the PC to bus systems,
such as PROFIBUS or Industrial Ethernet.
Slave A slave can only exchange data with a ³ master after it has been request to
send data by the master.
Slaves include, for example, all DP slaves such as ET 200S, ET 200X, etc.
SOFTNET for PROFIBUS
SOFTNET for PROFIBUS is the protocol software for the SIMATIC NET PC mo-
dules CP 5511 and CP 5611.
Standard rail
Metal rail standardized in compliance with EN 50 022.
The standard rail is used for the snap-on installation of network components
such as OLMs, repeaters etc.
Suppressor
Component for reducing induced voltages. Induced voltages occur when circuits
with inductances are turned off.
Surge arresters
are used to limit overvoltages from remote strikes or from induction effects (for
example switching in power circuits). Surge arresters (in contrast to lightning ar-
resters) divert currents with a significantly lower peak value, discharges and spe-
cific energies.
Terminating resistor
A resistor to terminate the LAN cable; terminating resistors are always necessary
at the ends of the cable or segment.
In SIMATIC NET PROFIBUS, terminating resistors are activated or deactivated
in the ³ bus connector or bus terminal or are installed as ³ terminators.
TerminatorA ³ terminating resistor in bus segments at transmission rates of 9.6 Kbps to 12
Mbps; the power supply is separate from the bus nodes.
Token is a frame that represents the right to transmit in a network. It signals the two
states ”occupied” or ”free”. The token is passed from master to master.
Glossary
Glossary-7
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Token ringAll the masters physically connected to a bus receive the token and pass it on to
the next master: the masters are located in a token ring.
Token rotation time
is the time that elapses between receiving the ³ token and receiving the next
token.
Transmission rate
The transmission rate specifies the number of bits transferred per second. On
PROFIBUS, transmission rates of 9.6 Kbps to 12 Mbps are possible.
TRDY Indicates readiness to acknowledge or respond (ready time)
TSET Setup time. The setup time is the time that can elapse between receiving a data
frame and reacting to it.
TSL The wait to receive time (slot time) is the maximum time that can elapse while
the sender waits for a response from the addressed station.
TTR Target rotation time. Each master compares the target rotation time with the ac-
tual token rotation time. The difference between the two decides how much time
the DP master has available to send its own data frames to the slaves.
Glossary
Glossary-8 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Index-1
PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Index
B
Block diagram, RS-485 repeater, 5-5
Bus connector, 4-33
connecting to module, 4-46
dimension drawing, F-2
pinout, 4-36
removing, 4-46
setting the terminating resistor, 4-46
technical specifications, 4-35
uses, 4-33
Bus connector 6ES7 972-0B.10
appearance, 4-37
connecting up the LAN cable, 4-38
Bus connector 6ES7 972-0BA30
appearance, 4-40
connecting up LAN cables, 4-40, 4-42
Bus connector 6ES7 972-0BA40, appearance,
4-42
C
Cabinet lighting, C-19
Cabling, outside buildings, C-17–C-19
Connecting up LAN cables
to bus connector 6ES7 972-0B.10, 4-38
to bus connector 6ES7 972-0BA30, 4-40,
4-42
E
Equipotential bonding, C-10
F
Fiber-optic cables, 7-2
glass fiber-optic cables, 7-13
PCF fiber-optic cables, 7-10
plastic fiber-optic cables, 7-3
Fiber-optic standard cable, 7-14, 7-17
Flexible fiber-optic trailing cable, 7-15, 7-19
G
Glass fiber-optic cable, technical
specifications, 7-14
H
Handling cable shields, C-9
I
ILM, dimension drawing, F-11
INDOOR fiber-optic cable, 7-14, 7-18
Installing cables
Instructions, C-2
instructions, C-2
Interference voltages, counter measures, C-7
Intrinsic safety, 2-24
L
LAN cable, length of the tap lines, 3-4
M
Manual S7-300, M7-300, ET 200M Modules
with Intrinsically Safe Signals, I-3
O
OBT, dimension drawing, F-9
OLM, dimension drawing, F-12
Overvoltage, definition, B-2
P
Possible configurations with the RS-485
repeater, 5-6
Index
Index-2 PROFIBUS Networks SIMATIC NET
6GK1970-5CA20-0AA1 Release 2 05/2000
Potential differences
avoiding, C-11
causes, C-10
Power supply unit, 2-24
complying with FISCO model, 2-24
PROFIBUS terminator
definition, 5-15
design, 5-15
dimension drawing, F-6
technical specifications, 5-16
PROFIBUS-PA, Installation Guideline, I-3
R
RS-485 repeater
block diagram, 5-5
connecting the LAN cable, 5-14, 5-17
connecting the power supply, 5-13
definition, 5-2
design, 5-2
dimension drawing, F-5, F-7, F-8
Installation, 5-9
pinout PG/OP connector, 5-4
possible configurations, 5-6
rules, 5-2
setting the terminating resistor, 5-6
technical specifications, 5-4
ungrounded operation, 5-12
uses, 5-2
S
SIENOPYR duplex fiber-optic marine cable,
7-15, 7-22
T
Tap lines, length, 3-4
Technical specifications
bus connector, 4-35
PROFIBUS terminator, 5-16
RS-485 repeater, 5-4
Terminating resistor
bus connector, 4-46
RS-485 repeater, 5-6
Transmission rates, 2-24
Type of protection, 2-24
