SNAP-PAC-S1-FM OPTO 22, SNAP-PAC-S1-FM Datasheet - Page 10

• Manufacturer Part Number: SNAP-PAC-S1-FM
• Description: SNAP PAC S-series Programmable Automation Controller-FM Approved
• Manufacturer: OPTO 22

Specifications of SNAP-PAC-S1-FM

• Accessory Type: I/O Module
• Length: 105.9mm
• External Width: 102.8mm
• External Depth: 44.4mm

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10
System Architecture
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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.
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 in Redundant Network Configuration
The network shown in this diagram requires PAC Control Professional and PAC Display Professional.
Ethernet switch,
network #1
Sensors and actuators,
Sensors and actuators,
SNAP PAC S-Series Controllers
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.
location #2
location #1
SNAP PAC S-series
controller controls
all I/O units.
PC with two NICs running
PAC Display Professional
PC with two NICs running
OptoOPCServer
SNAP PAC R-series
controller
SNAP PAC R-series
controller
Opto 22 Redundant Network
Ethernet switch,
network #2