SLC 500 System Overview

The Allen-Bradley SLC 500 is a small chassis-based family of
programmable controllers, discrete, analog, and specialty I/O, and
peripheral devices. The SLC 500 family delivers power and flexibility with
a wide range of communication configurations, features, and memory
options. The RSLogix 500 ladder logic programming package provides
flexible editors, point-and-click I/O configuration, and a powerful
database editor, as well as diagnostic and troubleshooting tools to help
you save project development time and maximize productivity

Distributed Systems
More complex systems can utilize:
?? distributed I/O
?? multiple controllers joined across networks
?? I/O in multiple platforms that are distributed in many locations and
connected over multiple I/O links
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 can choose between a ControlNet, DeviceNet, or
Univeral I/O link. A communication interface module is required in both
the local and remote chassis.
Depending upon the communication ports available on your particular
SLC control system, you can select operator interfaces that are
compatible.