Omron CJ2 CPU UNIT User Manual page 74

Cj2 cpu unit hardware
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2 Basic System Configuration and Devices
Although the CJ-series PLCs do not require Backplanes, the term "slot" is still used to refer to the rela-
tive position of a Unit in the Rack. Slot numbers increase toward the right side of the Rack.
Name
CJ-series
CPU Unit
CPU Rack
CJ-series Power Supply Unit
I/O Control Unit
Configu-
ration
Units
End
Cover
2-4
Configuration
CJ2H CPU Units
One required for every CPU Rack.
CJ2M CPU Units
One required for every CPU Rack.
Pulse I/O Mod-
Connected to use pulse I/O.
ule (Can be
Up to two Pulse I/O Modules can be connected. They must be con-
connected only
nected to the immediate left of the CPU Unit. The Pulse I/O Mod-
with a CJ2M
ule closest to the CPU Unit is Pulse I/O Module 0 and the other
CPU Unit.)
one is Pulse I/O Module 1.
Serial Option
One Serial Option Board can be mounted in the CJ2M-CPU3@.
Board (Can be
mounted only
with the CJ2M-
CPU3@.)
Memory Card
Install as required.
One required for every CPU Rack.
Required to connect an Expansion Rack. Must be connected
immediately to the right of the CPU Unit.
CJ-series Basic
A total of up to 10 Units can be connected to the CPU Rack and to
I/O Units
each of the Expansion Racks. (An error will occur if 11 or more
Units are connected.)
CJ-series Special
I/O Units
CJ-series CPU
Bus Units
Must be connected to the right end of the CPU Rack. One End
Cover is provided with the CPU Unit.
A fatal error will occur if the End Cover is not connected.
Remarks
CJ2 CPU Unit Hardware User's Manual

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