Omron CJ2 User Manual download pdf (Page 16)

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

CPU Unit

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

1 2 ... 11 12 13 14 15 16 17 18 19 20 21 ... 39 40

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