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SLC System Overview
System Components
A modular-hardware SLC / 1746 control system at minimum consists of a processor module and I/O modules in a single 1746 chassis with a power supply. The 1746 power supply connects to the left end of each 1746 chassis. You can configure a system with one, two, or three local chassis, for a total of 30 local I/O or communication modules maximum. You connect multiple local chassis together with chassis interconnect cables to extend the backplane signal lines from one chassis to another.
Choose the processor module with the on-board communication ports you need. You optionally add modules to provide additional communication ports for the processor. For I/O in locations remote from the processor, you must add an I/O scanner module for ControlNet, DeviceNet, or Universal Remote I/O port.
Depending on the communication ports available on your particular SLC control system, you can select operator interfaces that are compatible with those particular ports.