SNAP-PAC-S1-W OPTO 22, SNAP-PAC-S1-W Datasheet - Page 6

• Manufacturer Part Number: SNAP-PAC-S1-W
• Description: Programmable Controller Wireless
• Manufacturer: OPTO 22

Specifications of SNAP-PAC-S1-W

• Accessory Type: Programmable Automation Communication
• Signal Input Type: Ethernet, RS-232
• Rohs Compliant: Yes
• For Use With: SNAP PAC System
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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6
System Architecture (continued)
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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.
SNAP-PAC-S1 Controller and Serial-based I/O Units
The network shown in this diagram requires PAC Control Professional and PAC Display Professional.
RS-485 serial
Sensors and actuators,
network
location #1
Display Professional
PC running PAC
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
Sensors and actuators,
location #2
SNAP PAC S-series
controller controls
all I/O units.
SNAP PAC S-Series Controllers
Control Professional
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.
PC running PAC
Sensors and actuators,
location #3