2-3
2 Basic System Configuration and Devices
CJ2 CPU Unit Hardware User’s Manual
2-1 Basic System Configuration
2
2-1-2 CPU Rack
The CPU Rack consists of a CJ2 CPU Unit, a CJ-series Power Supply Unit, CJ-series Configuration
Units, and a CJ-series End Cover. Up to 10 Configuration Units can be connected.
z CJ2H CPU Units
*1 The I/O Control Unit is required only to connect an Expansion Rack. It must be connected next to the CPU
Unit.
z CJ2M CPU Units
Even though the CJ-series PLCs do not have Backplanes, the term “slot” is still used to refer to the
location of Units. Slot numbers are assigned in order to Units from left to right on the CPU Rack (slot 0,
slot 1, slot 2, etc.).
2-1-2 CPU Rack
Memory Card
Configuration Units (10 max.)
(Basic I/O Units, Special I/O Units, CPU Bus Units)
POWER
PA205R
DC24V
AC240V
OUTPUT
RUN
INPUT
AC100-240V
L2/N
L1
CONTROLLER
PROGRAMMABLE
ERR/ALM
RUN
COMM
BKUP
INH
PRPHL
OPEN
PERIPHERAL
BUSY
MCPWR
PORT
CJ2H
CPU64-EIP
SYSMAC
NS
MS
100M
10M
COMM
CPU Unit
Power Supply Unit
End Cover
I/O Control Unit
*1
Power Supply Unit
Pulse I/O
Modules
*1
CPU Unit
Memory Card
Configuration Units (10 max.)
End Cover
I/O Control Unit
*3
Serial Option Board
*2
RS-232C RS-422A/485
*1 Up to two Pulse I/O Modules can be
connected to the left of the CPU Unit.
*2 CJ2M-CPU3@ only.
*3 The I/O Control Unit is required only
to connect an Expansion Rack. It
must be connected immediately to
the right of the CPU Unit.
POWER
PA205R
DC24V
AC240V
OUTPUT
RUN
INPUT
AC100-240V
L2/N
L1
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