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CJ-series CPU Racks ■
A CJ-series CPU Rack consists of a CPU Unit, Power Supply Unit, Configuration Units (Basic I/O Units, Special I/O Units, and CPU
Bus Units), and an End Cover.
CPU Rack
End Cover
CJ1W-TER01
(One End Cover is provided as a standard
accessory with the CPU Unit.)
Power Supply Unit
CJ1W-P@@@ (@)
CPU Unit
CJ2H-CPU@@-EIP
I/O Control Unit
CJ1W-IC101
(Required only when connecting
to an Expansion Rack.)
CJ-series Basic I/O Units
CJ-series Special I/O Units
CJ-series CPU Bus Units
Total: 10 Units max
Required Units ●
Rack Unit name Required number of Units
CPU Rack
Power Supply Unit
1
CPU Unit
1
I/O Control Unit
Required only for mounting to an Expansion Rack.
Number of Configuration Units
10 max. (Same for all models of CPU Unit.)
(The number of Basic I/O Units, Special I/O Units, and CPU Bus Units can be varied. The number does
not include the I/O Control Unit.)
End Cover
1 (Included with CPU Unit.)
Types of Units ●
In the SYSMAC CJ Series, Units are classified into the following three types. The number of Racks differs depending on the type.
Type Appearance (example) Description Unit recognition method No. of units
Basic I/O Units
Units with contact inputs and contact outputs. Recognized by the CPU Unit according
to the position of the Rack and slot.
No restrictions.
Special I/O
Units
Special I/O Units provide more advanced functions
than do Basic I/O Units, including I/O other than
contact inputs and contact outputs.
Examples of Special I/O Units are Analog I/O Units
and High-speed Counter Units. They differ from
CPU Bus Units (including Network Communications
Units) in having a smaller area for exchanging data
with the CPU Unit.
Recognized by the CPU Unit according
to the unit number (0 to 95) set with the
rotary switches on the front panel.
A maximum of 96 Units can
be connected. (Multiple unit
numbers are allocated per Unit,
depending on the model and
settings.)
CPU Bus Units
CPU Bus Units exchange data with the CPU Unit
via the CPU Bus.
Examples of CPU Bus Units are Network
Communications Units and Serial Communications
Units. They differ from Special I/O Units in having a
larger area for exchanging data with the CPU Unit.
Recognized by the CPU Unit according
to the unit number (0 to F) set with the
rotary switch on the front panel.
A maximum of 15 Units can be
mounted. (The built-in EtherNet/
IP port on the CPU Unit must
be counted as one of the CPU
Bus Units.)
System Configuration