4
Publication 1747-SG001D-EN-P — January 2009
Local Systems
At minimum, a modular hardware SLC 500 control system consists of a processor
module and I/O modules in a single 1746 chassis with a power supply.
Power Supply
Processor
I/O Modules
You can configure a system with one, two, or three local chassis, for a maximum total
of 30 local I/O or communication modules. You connect multiple local chassis
together with chassis interconnect cables to extend the backplane signal lines from
one chassis to another.
P
o
w
er Supply
P
roc
essor
I/O Modules
P
o
w
er Supply
I/O Modules
I/O Modules
Chassis Interconnect Cable
Chassis Interconnect Cable
P
o
w
er Supply
Distributed Systems
More complex systems can use:
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.
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