OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE 1
DATA SHEET
Form 1584-170720
SNAP PAC S-SERIES CONTROLLERS
Features
Powerful standalone industrial controller
Two independent 10/100 Mbps Ethernet interfaces for use on
standard Ethernet networks
RS-232 and RS-485 serial ports for connection to serial devices,
including Opto 22 serial I/O units and PPP host
communication.
Multiple protocol support: TCP/IP, HTTP/HTTPS, EtherNet/IP™,
Modbus®/TCP, SNMP, SMTP, FTP, and OptoMMP™
IIoT and developer ready with a RESTful API to securely
access data
FTP server/client capability; includes file system and
removable storage (microSD card)
Use two identical models for controller redundancy
DESCRIPTION
A SNAP PAC S-series programmable automation controller (PAC)
provides powerful, real-time control and communication to meet
your industrial control, monitoring, Industrial Internet of Things (IIoT),
and data acquisition needs. As part of the Opto 22 SNAP PAC System,
one of these compact, industrially hardened controllers can handle
multiple control, automation, and data acquisition tasks involving
digital and analog control, serial string handling, PID, and enterprise
and Internet connectivity.
Connecting to Opto 22 serial- and Ethernet-based I/O systems, a
SNAP PAC S-series controller runs control programs written in
Opto 22’s PAC Control™ software to monitor and control a wide range
of devices and equipment. SNAP PAC S-series controllers are well
suited to original equipment manufacturers (OEMs), system
integrators, and end-users in process control, discrete manufacturing,
or hybrid industries and applications.
SNAP PAC S-series controllers include a RESTful API (representational
state transfer application program interface), so you can use the
language of your choice to securely access controller tag data and use
it for business purposes.
Ethernet Communication
All SNAP PAC S-series programmable automation controllers
communicate over standard 10/100 Mbps Ethernet networks and can
be attached to existing wired or wireless Ethernet networks. The
controllers can also be used in an independent control network built
with standard, off-the-shelf Ethernet hardware.
SNAP PAC S-series controllers include two 10/100 Mbps Ethernet
interfaces for networking through an Ethernet switch to Ethernet
hosts, as well as SNAP PAC brains and I/O, which provide local
intelligence and the connections to digital and analog sensors and
actuators as well as serial devices. These independent Ethernet ports
have separate IP addresses that can be used with PAC Project™
Professional software to set up redundant network links to safeguard
the availability and reliability of an I/O system, or to segment a control
system’s network from the enterprise LAN.
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Part Numbers
Part Description
SNAP-PAC-S1 Ethernet-based programmable automation con-
troller with 2 Ethernet interfaces, RESTful API
SNAP-PAC-S1-FM
Ethernet-based programmable automation con-
troller with 2 Ethernet interfaces, RESTful API,
Factory Mutual approved
SNAP-PAC-S1-W
Wired+Wireless Ethernet-based PAC with 2
Ethernet interfaces and a wireless LAN inter-
face, RESTful API
SNAP-PAC-S2
Ethernet-based programmable automation con-
troller with 2 Ethernet interfaces and 4 serial
ports, RESTful API
SNAP-PAC-S2-W
Wired+Wireless Ethernet-based PAC with 2
Ethernet interfaces, a wireless LAN interface,
and 4 serial ports, RESTful API
SNAP-PSDIN SNAP-PAC-S1 controller DIN-rail adapter
SNAP-S2DIN SNAP-PAC-S2 controller DIN-rail adapter
SNAP-PAC-S2 controller
PAGE 2
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DATA SHEET
Form 1584-170720
Wired+Wireless
Communication
SNAP-PAC-S1-W and SNAP-PAC-S2-
W controllers add wireless capability to
communications. In addition to the two
wired network interfaces, these models
have a wireless network interface as
well, so each PAC has a total of three
separate IP addresses—two wired and
one wireless. Wired+Wireless PACs can
be used wirelessly or on a wired
network, or both at once.
For flexibility in designing your wireless
network, wireless communication
includes support for 802.11a, b, and g
standards. Wired+Wireless PACs can be
used with a variety of wireless switches
and other infrastructure hardware. For
the best security, the 802.11i WPA2/AES
standard is supported, while older WPA
and WEP security standards are
included for backwards compatibility.
Just like a laptop computer with a
wireless connection, all functionality remains the same whether the
Wired+Wireless PAC is used wirelessly or as part of a wired network.
Supported protocols remain the same. Control programs run the
same on both networks without reprogramming.
A Wired+Wireless S-series PAC can communicate with both wired and
wireless SNAP PAC I/O units. (See “I/O Units Supported” on page 4 for
details.) If desired, the PAC can segment a wireless network from a
wired one.
Serial Communication
SNAP PAC S-series controllers provide RS-232 and RS-485
communication as follows:
The SNAP-PAC-S1 and SNAP-PAC-S1-FM have two RS-232 serial
ports that support general-purpose communication with serial
devices; you can send and receive data from one or two serial devices
connected directly to the controller. Port 0 can be connected to a
modem using PPP (Point-to-Point Protocol). These controllers also
have one pluggable two-wire RS-485 port that can be used for SNAP
PAC or mistic serial I/O units. For additional serial interfaces, you can
add one or more SNAP serial communication modules on SNAP PAC
racks connected to the controller.
The SNAP-PAC-S2 has four serial ports that can each be configured
using PAC Manager as either RS-232 or RS-485
(2-wire or 4-wire). These serial ports can be used for I/O or for general-
purpose serial communication. For the default configuration
settings of these ports, see form 1592, SNAP PAC S-series User’s
Guide.
Configured as RS-232, the ports support remote serial device
communication, and any one of the ports can be configured as a
PPP modem connection for creating a TCP/IP network over PSTN
(Public Switched Telephone Network) lines. Configured as
RS-485, the serial ports connect to legacy Opto 22
mistic™ I/O units, including the serial B3000 brain
and remote mistic bricks, and to SNAP PAC SB-series
serial brains.
For additional serial host interfaces, you can add one
or more SNAP serial communication modules on
attached SNAP Ethernet-based I/O units.
Controller Redundancy
Two identical SNAP PAC S-series controllers can be
used to form a redundant system, where one controller
actively runs the control program and the other is ready to
take over immediately if the first one should fail.
Besides two identical PACs, a redundant system requires PAC
Professional 9.0 or newer (see “Software,” below), and the SNAP PAC
Redundancy Option Kit. For more information, see form 1901, SNAP
PAC Redundancy Option Kit Data Sheet, and form 1831, SNAP PAC
System Redundancy User’s Guide, both available on our website.
Backward Compatibility
S-series controllers have RS-485 serial interfaces for connecting to
Opto 22’s legacy mistic I/O units. The SNAP-PAC-S1 and SNAP-PAC-S1-
FM have one RS-485 port, and the SNAP-PAC-S2 can be configured
with up to four.
This connectivity with legacy serial-based I/O systems, combined
with PAC Control Professional’s ability to import control programs (or
strategies) written in OptoControl™ software, provides a migration
path to integrate older Opto 22 I/O systems into modern control
hardware running on Ethernet networks.
For detailed information on updating control strategies and
integrating legacy control hardware into modern systems, see form
1692, FactoryFloor to PAC Project Migration Technical Note.
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PAGE 3
DATA SHEET
Form 1584-170720
SOFTWARE
SNAP PAC controllers use Opto 22’s PAC Project Microsoft®
Windows®-compatible automation software for control programming,
human-machine-interface (HMI) development, and OPC and
database connectivity. Two versions of PAC Project are available:
•PAC Project Basic includes PAC Control for developing control
programs, PAC Display™ for creating operator interfaces, and PAC
Manager™ configuration software.
• PAC Project Professional adds expanded versions of PAC
Control and PAC Display, plus a SoftPAC™ software-based
controller for PC-based control, OptoOPCServer™ software for
exchanging data with OPC 2.0-compliant client software
applications, and OptoDataLink™ for exchanging SNAP PAC
System data with ODBC-compliant databases.
Applications included in the PAC Project software suite are:
PAC Control Basic is a graphical, flowchart-based programming tool
for machine control and process applications. Using PAC Control, you
create, download, and run strategies on a SNAP PAC controller. In
addition to flowchart programming with subroutine capability, PAC
Control includes a powerful, built-in scripting language based on C
and other procedural languages. PAC Control Professional adds
capabilities to import OptoControl strategies, to support mistic I/O
units, and to use a SNAP PAC controller’s independent Ethernet ports
to segment communication links.
PAC Display Basic is an intuitive HMI package for building operator
interfaces, or projects, for communicating with a SNAP PAC controller.
PAC Display offers a full-featured HMI including alarming, trending,
and a built-in library of 3,000 industrial automation graphics. PAC
Display Professional adds the ability to import projects created in
OptoDisplay, part of the Opto 22 FactoryFloor® software suite, and to
use redundant communication links on SNAP PAC controllers. PAC
Display Professional can also connect to Ethernet-based FactoryFloor
controllers running OptoControl strategies or ioProject controllers
running ioControl strategies.
SoftPAC is a software-based programmable automation controller
(PAC) designed for PC-based control. Programmed just like an Opto 22
hardware PAC, SoftPAC runs your PAC Control strategy independently
on an embedded or standalone PC. SoftPAC takes advantage of a PC’s
speed and file capabilities for applications requiring extended file
storage, frequent access to files, math-intensive processes, or a large
number of control flowcharts running at the same time.
OptoOPCServer (PAC Project Professional only) is a fast, efficient OPC
2.0-compliant server for communicating with many Opto 22
products, including SNAP PAC controllers running PAC Control
strategies, SNAP PAC brains, SNAP Ultimate controller/brains, SNAP
Ethernet and SNAP Simple brains, and Ethernet-based FactoryFloor
controllers running OptoControl strategies.
Using OptoOPCServer, you can consolidate data from all these
Opto 22 systems into the OPC client software of your choice, such as
third-party HMI and data acquisition packages, and custom software
applications you create with tools such as Visual C++®.
OptoDataLink (PAC Project Professional only) transparently provides
multiple connections for data exchange with popular databases such
as Microsoft SQL Server, Microsoft Access, and MySQL. OptoDataLink
connects your SNAP PAC system with the tools used for making
business decisions, bringing
real-time, accurate data to decision makers.
PAC Manager is a utility application for assigning IP addresses to
SNAP PAC controllers and brains, reading or changing basic controller
configuration, upgrading firmware, and inspecting or testing
controllers and I/O.
Software Availability
PAC Project Basic is included with SNAP PAC controllers and is a free
download from the Opto 22 website. PAC Project Professional is
available for purchase. You can also separately purchase PAC Control
Professional, PAC Display Professional, SoftPAC, OptoOPCServer, and
OptoDataLink as needed. For additional information, see form 1699,
PAC Project Data Sheet.
RESTful API
Ready for the Industrial Internet of Things (IIoT)? Need to use
controller data for business purposes? Your SNAP PAC controller’s
built-in RESTful application program interface (API) lets you exchange
data easily using the architecture of the Internet and the language of
your choice.
You can query PAC Control strategy tags with HTTPS (Basic Auth)
using your favorite programming language—PHP, .NET, Node.js,
Python, or others. Tag data from I/O points and controller variables is
returned as JSON.
You can set up authentication keys with permissions for either read-
only or read-write, as necessary for your application. The RESTful API is
included in SNAP PAC firmware R9.5a and PAC Project 9.5 (or higher).
See developer.opto22.com for complete information.
PAGE 4
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DATA SHEET
Form 1584-170720
I/O Units Supported
TECHNICAL SPECIFICATIONS
Specifications are continued on the following page.
S-Series Controller
Supported I/O units located on:
A wireless LAN A wired Ethernet network A serial network
SNAP-PAC-S1
SNAP-PAC-S1-FM
SNAP-PAC-S2
---none---
SNAP-PAC-R1
SNAP-PAC-R1-B
SNAP-PAC-R1-FM
SNAP-PAC-R2
SNAP-PAC-R2-FM
SNAP-PAC-EB1
SNAP-PAC-EB1-FM
SNAP-PAC-EB2
SNAP-PAC-EB2-FM
G4EB2
G4D32EB2
G4D32EB2-UPG
SNAP-UP1-ADS*
SNAP-B3000-ENET*
SNAP-ENET-D64*
SNAP-ENET-S64*
SNAP-ENET-RTC*
SNAP-PAC-SB1
SNAP-PAC-SB2
B3000*
B3000-B*
SNAP-BRS*
B100*
B200*
G4D16R*
G4D32RS*
G4A8R*
SNAP-PAC-S1-W
SNAP-PAC-S2-W
SNAP-PAC-R1-W
SNAP-PAC-R2-W
SNAP-PAC-EB1-W
SNAP-PAC-EB2-W
* Legacy I/O processors; not recommended for new development
Processor 266 MHz 32-bit ColdFire
®
5475 with integrated floating-point unit (FPU)
Memory
SNAP-PAC-S1 and SNAP-PAC-S2
Total RAM: 32 MB
Total RAM for PAC Control Strategies: 16 MB
Battery-backed RAM: 8 MB
RAM File Storage: 2.5 MB
Flash File Storage: 4 MB
SNAP-PAC-S1-W and SNAP-PAC-S2-W
Total RAM: 128 MB
Total RAM for PAC Control Strategies: 64MB
Battery-backed RAM: 8 MB
RAM File Storage: 16 MB
Flash File Storage: 4 MB
Removable storage
(Models with manufacture dates of June 2014 and newer. Requires firmware
R9.4a or higher and loader R6.1a or higher) MicroSD card slot: supports
microSD or microSDHC cards to 32 GB.
(Models with manufacture dates of November 2008 through May 2014 with
firmware R8.4 or higher) microSD card slot: supports microSD cards up to 2
GB.
Backup battery
SNAP-PAC-S1s with serial number 625654 or higher and all SNAP-PAC-S2s:
Rechargeable (recharges whenever the brain has power), 1-year power-off
data retention (replacement part number: SNAP-PAC-BATTERY-ML2430).
SNAP-PAC-S1s with serial number 625653 or lower: User-replaceable 3.6-volt
TL 5242 /W lithium, 10-year minimum power-off data retention (replacement
part number: G4BATT32).
Ethernet Communication
(wired) to host and I/O
Two independent 10/100 Mbps Ethernet network interfaces (RJ-45 connec-
tors). Each interface has a separate IP address (separate subnet).
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PAGE 5
DATA SHEET
Form 1584-170720
Ethernet Communication
(wireless)*
Wireless LAN interface with separate IP address.
Topologies: Infrastructure, Ad-Hoc
Security: 802.11i; AES - Compatible with WPA2 Personal, TKIP - Compatible
with WPA Personal, WEP.
NOTE: TKIP/AES security is not supported in Ad-Hoc mode.
Frequency 802.11a: 5.180–5.240 GHz, 5.745–5.825 GHz
Frequency 802.11b/g: 2.412–2.472 GHz, 2.484 GHz
Transmit Power: 15 dBm maximum
Antenna Connector: Reverse polarity SMA (RP-SMA or RSMA)
Roaming: Supported within an SSID (Service Set Identifier) only
Serial Communication
SNAP-PAC-S1
RS-232 serial: Two RS-232 serial ports (one DB-9 and one pluggable connec-
tor); one port has full handshaking. PPP is supported only on port 0. Buffer
size: 512 bytes each for RX and TX.
RS-485 serial: One RS-485 serial port (pluggable connector); two-wire RS-
485; optional mistic signal interrupts. Range (serial multidrop): 32 stations
maximum on a segment (including PC, controller, and I/O units); up to 3000 ft
(914 m) on a segment. Buffer size: 512 bytes each for RX and TX.
SNAP-PAC-S2
Four serial ports that can be used as general purpose ports or for serial I/O
units; each port is software configurable as either RS-232 (Tx, Rx, COM, DTR,
DCD, RTS, CTS) or as RS-485 (2-wire, 4-wire, optional termination, optional
biasing); optional mistic signal interrupts. Buffer size: 512 bytes each for RX
and TX.
Power requirements 8–32 VDC ±0.5, 11.3 VA maximum
(SNAP-PAC-S1 controllers with serial numbers below 500,000 use 8–24 VDC)
Operating temperature
Storage temperature
Humidity
-20 °C to 60 °C
-40 °C to 85 °C
0% to 95% relative humidity, non-condensing
Software
PAC Project Basic
PAC Project Professional
RESTful API**
Includes programming, HMI software, and configuration software; included
with purchase of controller.
PAC Project Basic plus OPC 2.0-compliant OPC server, OptoControl strategy
and OptoDisplay project importing, support for serial mistic I/O units, and
Ethernet link redundancy support.
Use HTTPS to access data (read/write or read-only) from controller tags using
your chosen programming language. Data returned in JSON. More informa-
tion at developer.opto22.com
Number of charts that can
run simultaneously 32
Other features
Multiple protocol support including TCP/IP, HTTP/HTTPS, FTP, SNMP v2.0c
(with firmware 8.2a), Modbus/TCP, EtherNet/IP™, and OptoMMP™
Real-time clock
FTP server/client with file system (in RAM and in removable storage)
Ethernet link redundancy or network segmenting
Agency certifications
(-W models only) U.S., FCC Part 15 Subpart C; Canada, IC RSS-210
(-FM models only) Factory Mutual approved
All models except -W: CE, RoHS, DFARS
-W models: DFARS
Warranty 30 months from date of manufacture
*
Requires a Wired+Wireless model (SNAP-PAC-S1-W or SNAP-PAC-S2-W)
** Requires firmware R9.5a or higher
PAGE 6
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DATA SHEET
Form 1584-170720
SYSTEM ARCHITECTURE
SNAP-PAC-S1 Controller and Serial-based I/O Units
The network shown in this diagram requires PAC Control Professional and PAC Display Professional.
PC running PAC
Display Professional
PC running PAC
Control Professional
Ethernet
switch
This diagram shows a SNAP PAC S-series controller
connected to multiple Opto 22 serial-based I/O units over
an RS-485 serial network. The controller is also connected to
a larger, separate enterprise Ethernet network to provide
process data to a PC running Opto 22’s PAC Display HMI
software.
The diagram also shows a PC running PAC Control
Professional; the control program (or strategy) that runs on
the SNAP controller was developed in this application. Once
developed, the strategy is downloaded to the controller and
runs independently.
I/O units are connected via a 2-wire RS-485 serial network
and are controlled by the SNAP PAC S-series controller. Each I/O
unit is connected to its own group of sensors and actuators.
SNAP PAC S-series
controller controls
all I/O units.
RS-485 serial
network
Sensors and actuators,
location #1
Sensors and actuators,
location #2
Sensors and actuators,
location #3
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© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE 7
DATA SHEET
Form 1584-170720
SYSTEM ARCHITECTURE (CONTINUED)
SNAP-PAC-S2 Controller and Serial-based I/O Units
The network shown in this diagram requires PAC Control Professional and PAC Display Professional.
Sensors and
actuators, location #3
Sensors and actuators,
location #4
Sensors and
actuators, location #5
Sensors and actuators,
location #1
Sensors and actuators,
location #2
PC running PAC
Display Professional
PC running PAC
Control Professional
Scale
RS-485 serial networks SNAP-PAC-S2 controller
controls all I/O units and
processes data from the scale.
I/O units are connected via a 2-wire RS-485 serial network and
are controlled by the SNAP PAC S-series controller. Each I/O unit
is connected to its own group of sensors and actuators.
Ethernet switch
Modem
Modem
PPP connection
PPP connection
to SNAP-PAC-R1
PAGE 8
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DATA SHEET
Form 1584-170720
SYSTEM ARCHITECTURE (CONTINUED)
Wired+Wireless SNAP PAC S-series Controller
The Wired+Wireless PAC can communicate with devices on wired networks, on a wireless LAN, or on both
at once. It can also simultaneously communicate serially.
Serial I/O units
Wired+Wireless I/O units
PC running PAC Display PC running PAC Control
SNAP-PAC-S1-W controller
controls all I/O units.
The Wired+Wireless SNAP PAC S-series controller is
controlling three groups of I/O units: one group through
its serial port, another through a standard 10/100 Mbps
interface, and the third over a wireless LAN.
At the same time, the controller is connected to a
second wired network for communication with PCs
running PAC Control and PAC Display.
Ethernet switch
Wireless
access point
Ethernet switch
I/O units on a wired
Ethernet network
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PAGE 9
DATA SHEET
Form 1584-170720
SYSTEM ARCHITECTURE (CONTINUED)
SNAP PAC S-series Controller Segmenting Wired Ethernet Networks
The network shown in this diagram requires PAC Control Professional and PAC Display Professional.
PC running
OptoOPCServer and
OptoDataLink
PC running PAC Display
Professional
Ethernet switch,
network #1
Ethernet switch,
network #2
Enterprise Network
Control Network
SNAP PAC S-series controller communicates with host
computers through one network interface and controls I/O
with other devices through the other interface.
I/O units are controlled by the controller
on an isolated segment.
Sensors and actuators,
location #1
Sensors and actuators,
location #2
This diagram shows multiple Opto 22
SNAP I/O units connected together over an Ethernet
network and controlled by a SNAP PAC S-series controller
running a control strategy. The controller is also connected
to a larger, separate enterprise Ethernet network to
provide data to two PCs running Opto 22’s PAC Display
HMI software and OptoOPCServer.
Sitting between the two networks, the SNAP PAC S-series
controller isolates I/O and control traffic from the
enterprise network, and vice versa.
For this system, PAC Display must be configured to access
the I/O through the controller rather than directly from the
I/O units, since they are on a separate network.
If you are using a Wired+Wireless PAC, one of these
networks could be a wireless LAN.
PAGE 10
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DATA SHEET
Form 1584-170720
SYSTEM ARCHITECTURE (CONTINUED)
SNAP PAC S-Series Controller in Redundant Network Configuration
The network shown in this diagram requires PAC Control Professional and PAC Display Professional.
PC with two NICs running
PAC Display Professional
PC with two NICs running
OptoOPCServer
This diagram shows a SNAP PAC S-series controller connected
to two separate Ethernet networks. This configuration
addresses the concern that an Ethernet network may fail or
need maintenance, leaving the PC running OptoOPCServer,
the PC running PAC Display, the controller, and the I/O units
unable to communicate.
In this configuration, if one network goes down, devices can
still communicate on the other. Each PC has two network
interface cards (NICs), and the SNAP PAC S-series controller
and the I/O units (SNAP PAC R-series) have two network
interfaces as well.
If you are using Wired+Wireless PACs, one of these networks
can be a wireless LAN.
I/O units are all connected by the controller. Each I/O unit
is connected to its own group of sensors and actuators,
but all are connected to the same two networks.
SNAP PAC S-series
controller controls
all I/O units.
SNAP PAC R-series
controller
Sensors and actuators,
location #2
Sensors and actuators,
location #1
Opto 22 Redundant Network
Ethernet switch,
network #2
Ethernet switch,
network #1
SNAP PAC R-series
controller
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PAGE 11
DATA SHEET
Form 1584-170720
SYSTEM ARCHITECTURE (CONTINUED)
SNAP PAC S-series Redundant Controllers
Controller redundancy requires PAC Project Professional 9.0 or newer.
In this diagram, two S-series controllers are operating
redundantly. One is the active controller, while the other
acts as a backup, ready to take over should the first one fail.
Controller redundancy requires PAC Project Professional 9.0
or newer and the Redundancy Option Kit, which includes
the arbiter and the redundant power switch in this
diagram. PAC Redundancy Manager, a software utility for
setting up and maintaining the system, is included in PAC
Project Pro.
The two controllers you use must be exactly the same part
number (for example, two SNAP-PAC-S2 controllers or two
SNAP-PAC-S1-W controllers).
One advantage of an Opto 22 redundant system is that it
uses standard PACs, standard cabling, and standard I/O.
Another advantage is that either controller can act as the
active or backup controller; you can switch their roles at
any time for maintenance, for example.
For detailed information on redundancy, see form 1831,
SNAP PAC System Redundancy User’s Guide.
SNAP PAC I/O units
Ethernet switch
Redundant
power switch
Arbiter
SNAP PAC controller
SNAP PAC controller
PC running PAC Project Professional
RS-485
Power control
Ethernet crossover
cable connects the
PAC S2s on ENET2
RS-485 Power
PAGE 12
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DATA SHEET
Form 1584-170720
SNAP-PAC-S1 CONNECTORS AND INDICATORS
This diagram applies to both the SNAP-PAC-S1 and the SNAP-PAC-S1-FM.
Status and Activity LEDs
Indicator Description
S0 RS-232 serial activity
on port 0
S1 RS-232 serial activity
on port 1
S2 RS-485 serial activity
STAT
Startup status and
control program oper-
ational status
ACT Ethernet network
activity
LINK Link established with
Ethernet network
Port 0 for RS-232 serial
(DB-9 connector)
Pin Description Signal
Direction
1DCD In
2RX In
3TX Out
4DTR Out
5COM
6DSR In
7RTS Out
8CTS In
9 RI* In
* RI signal does not occur on
PACs with a microSD card slot
Ports 1 and 2 for RS-485
and RS-232 serial
Pin Description Signal
Direction
Port 2 for RS-485 serial
(2-Wire)
1TX/RX+ In/Out
2TX/RX– In/Out
3SIG COM*
4IRQ+ In
5IRQ– In
Port 1 for RS-232 serial
6TX Out
7RX In
8GND
9RTS Out
10 CTS In
* Isolated ground
Independent 10/100 Mbps Ethernet
interfaces (RJ-45 connectors)
8–32 VDC input power
(pluggable 3-pin connector)
Port 0 for RS-232 serial
communications (DB-9 connector)
with handshaking. Supports PPP by default;
for use with serial devices, configure the port
in PAC Manager.
Port 1 for RS-232 serial
communications (pins 6–10 of
pluggable 10-pin connector)
Port 2 for RS-485 serial
communications (pins 1–5 of
pluggable 10-pin connector)
DIP switches for RS-485 serial link
Controller reset button
STAT LED
Activity LED (Yellow)
Link LED (Green)
MicroSD card slot
Bias
Termination
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE 13
DATA SHEET
Form 1584-170720
SNAP-PAC-S1-W CONNECTORS AND INDICATORS (WIRED+WIRELESS)
PAGE 14
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
Form 1584-170720
SNAP-PAC-S2 CONNECTORS AND INDICATORS
Status and Activity LEDs
Indicator Description
TX0/RX0 Serial activity on port 0
TX1/RX1 Serial activity on port 1
TX2/RX2 Serial activity on port 2
TX3/RX3 Serial activity on port 3
STAT Startup status and control
program operational status
ACT Ethernet network activity
LINK Link established with Ether-
net network
RS-485 and RS-232 Ports1
Pin RS-232 Signal
Direction
RS-485 Signal
Direction
1 TX Out TX/RX+ In/Out
2RX In TX/RX– In/Out
3COM2COM2
4RTS Out RX+ (4 wire) In
5 CTS In RX- (4 wire) In
6DTR Out IRQ+ In
7 DCD In IRQ– In
1 CAUTION: Do not use communication port connectors from a
legacy OptoControl controller*. Legacy connectors will fit in a
SNAP-PAC-S2, but the pin orientation is different. Instead, use the
connectors supplied with the SNAP-PAC-S2 controller.
2 Isolated ground. (Each channel is isolated from the others.)
*Legacy OptoControl Controllers:
G4LC32
G4LC32SX
G4LC32ISA
G4LC32ISA-LT
M4
M4IO
M4RTU
SNAP-LCM4
SNAP-LCSX/PLUS
Independent 10/100 Mbps Ethernet
interfaces (RJ-45 connectors)
8–32 VDC input power
(pluggable 3-pin connector)
Ports 0 - 3 are each software
configurable as either
RS-232 (TX, RX, COM, DTR, DCD RTS,
CTS), or
RS-485 (2-wire, 4-wire, optional
termination, optional biasing).
Configure ports in PAC Manager.
Controller reset button
STAT LED
Activity LED (Yellow)
Link LED (Green)
Serial activity LEDs
Serial activity LEDs
MicroSD card slot
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE 15
DATA SHEET
Form 1584-170720
SNAP-PAC-S2-W CONNECTORS AND INDICATORS (WIRED+WIRELESS)
Status and Activity LEDs
Indicator Description
TX0/RX0 Serial activity on port 0
TX1/RX1 Serial activity on port 1
TX2/RX2 Serial activity on port 2
TX3/RX3 Serial activity on port 3
STAT Startup status and control program
operational status
ACT Ethernet network activity
LINK Link established with Ethernet network
WLAN Wireless LAN status
RS-485 and RS-232 Ports1
Pin RS-232 Signal
Direction
RS-485 Signal
Direction
1 TX Out TX/RX+ In/Out
2RX In TX/RX– In/Out
3COM2COM2
4RTS Out RX+ (4 wire) In
5 CTS In RX- (4 wire) In
6DTR Out IRQ+ In
7 DCD In IRQ– In
1 CAUTION: Do not use communication port connectors from a
legacy OptoControl controller*. Legacy connectors will fit in a
SNAP-PAC-S2, but the pin orientation is different. Instead, use the
connectors supplied with the SNAP-PAC-S2 controller.
2 Isolated ground. (Each channel is isolated from the others.)
*Legacy OptoControl Controllers:
G4LC32
G4LC32SX
G4LC32ISA
G4LC32ISA-LT
M4
M4IO
M4RTU
SNAP-LCM4
SNAP-LCSX/PLUS
Independent 10/100 Mbps Ethernet
interfaces (RJ-45 connectors)
8–32 VDC input power
(pluggable 3-pin connector)
Ports 0 - 3 are each software
configurable as either
RS-232 (TX, RX, COM, DTR, DCD RTS,
CTS), or
RS-485 (2-wire, 4-wire, optional
termination, optional biasing).
Configure ports in PAC Manager.
Controller reset button
STAT LED
Activity LED (Yellow)
Link LED (Green)
Serial activity LEDs
Serial activity LEDs
MicroSD card slot
WLAN LED
Wireless LAN antenna
PAGE 16
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
Form 1584-170720
DIMENSIONAL DRAWINGS
SNAP-PAC-S1 and SNAP-PAC-S1-FM Panel
Mounting and Dimensions
For SNAP-PAC-S1-W dimensions, see page 20
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE 17
DATA SHEET
Form 1584-170720
DIMENSIONAL DRAWINGS (CONTINUED)
SNAP-PAC-S1 and SNAP-PAC-S1-FM DIN-Rail
Mounting and Dimensions
Requires a SNAP-PSDIN adapter (purchased separately).
PAGE 18
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
Form 1584-170720
DIMENSIONAL DRAWINGS (CONTINUED)
SNAP-PAC-S2 Panel Mounting and Dimensions
For SNAP-PAC-S2-W dimensions, see page 21
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
PAGE 19
DATA SHEET
Form 1584-170720
DIMENSIONAL DRAWINGS (CONTINUED)
SNAP-PAC-S2 DIN-Rail Mounting and Dimensions
Requires a SNAP-S2DIN adapter (purchased separately).
PAGE 20
OPTO 22 • 800-321-6786 • 1-951-695-3000 • www.opto22.com • sales@opto22.com
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
Form 1584-170720
DIMENSIONAL DRAWINGS (CONTINUED)
SNAP-PAC-S1-W Dimensions
PAGE 21
OPTO 22 • www.opto22.com SALES • sales@opto22.com SUPPORT • support@opto22.com
43044 Business Park Dr. Temecula, CA 92590-3614 800-321-6786 • 1-951-695-3000 800-835-6786 • 1-951-695-3080
© 2006–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
DATA SHEET
Form 1584-170720
DIMENSIONAL DRAWINGS (CONTINUED)
SNAP-PAC-S2-W Dimensions
OPTO 22 • www.opto22.com SALES • sales@opto22.com SUPPORT • support@opto22.com
43044 Business Park Dr. Temecula, CA 92590-3614 800-321-6786 • 1-951-695-3000 800-835-6786 • 1-951-695-3080
© 2012–2017 Opto 22. All rights reserved. Dimensions and specifications are subject to change. Brand or product names used herein are trademarks or registered trademarks of their respective companies or organizations.
More about Opto 22
Form 1335-170413
PRODUCTS
Opto 22 develops and manufactures reliable, easy-to-use, open
standards-based hardware and software products used worldwide.
Industrial automation, process control, building automation, industrial
refrigeration, remote monitoring, data acquisition, and Industrial
Internet of Things (IIoT) applications all rely on Opto 22.
groov
Monitor and control your
equipment from anywhere using
your smartphone or tablet with
groov. Build your own mobile app
easily—just drag, drop, and tag. No
programming or coding. Visit
groov.com for more information
and your free trial.
SNAP PAC System
Developer- and IIoT-ready, the SNAP PAC System connects physical
assets to databases and applications using open standards. The SNAP
PAC System consists of four integrated components:
• SNAP PAC controllers
•PAC Project
™ Software Suite
•SNAP PAC brains
•SNAP I/O
™
SNAP PAC Controllers
SNAP PAC programmable automation
controllers handle a wide range of digital,
analog, and serial functions for data collection,
remote monitoring, process control, and
discrete and hybrid manufacturing.
For IIoT applications and easier integration with company systems,
standalone and rack-mounted SNAP PACs include a built-in HTTP/
HTTPS server and RESTful API (application program interface). The
REST API gives you secure, direct access to I/O and variable data using
your choice of programming languages. No middleware, protocol
converters, drivers, or gateways needed.
Based on open Ethernet and Internet Protocol (IP) standards, SNAP
PACs make it easier to build or extend a system without the expense
and limitations of proprietary networks and protocols.
PAC Project Software Suite
Opto 22’s PAC Project Software Suite offers full-featured, cost-effective
control programming, HMI (human machine interface), OPC server,
and database connectivity software.
Control programming includes both easy-to-learn flowcharts and
optional scripting. Commands are in plain English; variables and
I/O point names are fully descriptive.
PAC Project Basic offers control and HMI tools and is free for download
on our website, www.opto22.com. PAC Project Professional, available
for separate purchase, adds one SoftPAC software-based controller,
OptoOPCServer, OptoDataLink, options for controller redundancy or
segmented networking, and support for legacy Opto 22 serial mistic™
I/O units.
SNAP PAC Brains
While SNAP PAC controllers provide central control and data
distribution, SNAP PAC brains provide distributed intelligence for I/O
processing and communications. Brains offer analog, digital, and serial
functions, including thermocouple linearization, local PID loop
control, watchdog, totalizing, and much more.
SNAP I/O
I/O provides the local connection to sensors and equipment. Opto 22
SNAP I/O offers 1 to 32 points of reliable I/O per module. Analog,
digital, and serial modules are mixed on one mounting rack and
controlled by a SNAP PAC brain or rack-mounted PAC.
QUALITY
Founded in 1974, Opto 22 has established a worldwide reputation for
high-quality products. All are made in the U.S.A. at our manufacturing
facility in Temecula, California.
Because we test each product twice before it
leaves our factory, rather than only testing a
sample of each batch, we can guarantee most
solid-state relays and optically isolated I/O
modules for life.
FREE PRODUCT SUPPORT
Opto 22’s California-based Product Support
Group offers free, comprehensive technical support for Opto 22
products from engineers with decades of training and experience.
Support is available in English and Spanish by phone or email,
Monday–Friday, 7 a.m. to 5 p.m. PST.
Support is always available on our website: how-to videos, user’s
guides, OptoKnowledgeBase, self-training guide, troubleshooting,
and OptoForums. In addition, hands-on training is available for free at
our Temecula, California headquarters, and you can register online.
PURCHASING OPTO 22 PRODUCTS
Opto 22 products are sold directly and through a worldwide network
of distributors, partners, and system integrators. For more information,
contact Opto 22 headquarters at 800-321-6786 (toll-free in the U.S.
and Canada) or 951-695-3000, or visit our website at
www.opto22.com.