SNAP PAC S-Series User’s Guide
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1: Overview
INTRODUCTION
The SNAP PAC S-series programmable automation
controllers provide powerful, real-time control and
communication to meet your industrial control,
monitoring, and data acquisition and exchange
needs. As part of the Opto 22 SNAP PAC System, one
of these compact, industrially hardened controllers
can handle multiple control, automation, and data
tasks involving digital and analog control, serial
string handling, PID, and enterprise 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.
A SNAP PAC S-series controller simultaneously runs up to 32 PAC Control flowcharts, although a PAC Control
strategy can actually contain a much larger number of flowcharts. The total number of flowcharts is limited
only by the controller memory available for strategy storage.
Two S-series PACs of the same part number can be used together as redundant controllers. One controller
runs the strategy while the other runs in tandem, ready to take over if the first one fails.
Ethernet Communication
All SNAP PAC S-series programmable controllers communicate over standard 10/100 Mbps Ethernet networks
and can be attached to an existing wired Ethernet network or wireless LAN (local area network). 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
SNAP-PAC-S2
controller
