Omron CJ2 User Manual

2 Basic System Configuration and Devices
2-2
CJ2 CPU Unit Hardware User’s Manual
2-1 Basic System Configuration
z CPU Rack
A CPU Rack can consist of a CJ2 CPU Unit, a CJ-series Power Supply Unit, CJ-series Configuration
Units (Basic I/O Units, Special I/O Units, CPU Bus Units), and a CJ-series End Cover. The same CJ-
series Power Supply Units and CJ-series Configuration Units that are used with CJ1 CPU Units are
used with CJ2 CPU Units. An I/O Control Unit is required to connect a CJ-series Expansion Rack. A
Memory Card is optional.
z Expansion Racks
A CJ-series Expansion Rack can be connected to the CPU Rack or another CJ-series Expansion
Rack. An Expansion Rack can consist of an I/O Interface Unit, a Power Supply Unit, Basic I/O Units,
Special I/O Units, CPU Bus Units, and an End Cover.
2-1-1 Basic System Configuration
CPU Rack
Power Supply Unit
CPU Unit
I/O Control Unit
Configuration Units
(Basic I/O Units, Special
I/O Units, CPU Bus Units)
Configuration Units
(Basic I/O Units, Special
I/O Units, CPU Bus Units)
Expansion Rack
Power Supply Unit
I/O Interface Unit
End Cover
End Cover
Memory Card

Omron CJ2 Specifications

General

Model	CJ2
Manufacturer	Omron
Type	Programmable Logic Controller (PLC)
CPU Units	Multiple models available (e.g., CJ2M, CJ2H)
Number of I/O Points	Up to 2, 560 points
Communication Ports	Ethernet/IP, EtherCAT, USB, Serial
Expansion	Yes, via I/O Units and Special I/O Units
I/O Control Method	Cyclic Scan, Interrupt
Programming Language	Ladder diagram, structured text, function block diagram, sequential function chart, instruction list
Built-in I/O	Available on some models (e.g., CJ2M)
Ethernet Port	Yes, 1 port (depending on CPU Unit)
Serial Ports	RS-232C, RS-422/485 (configurable)
USB Port	Yes (for programming and monitoring)
Operating Temperature	0°C to 55°C
Storage Temperature	-25 to 70°C
Humidity	10 to 95% RH (non-condensing)
Vibration Resistance	10 to 57 Hz, Amplitude: 0.075 mm, 57 to 150 Hz, Acceleration: 1 G, X, Y, and Z directions, 80 min each
Power Supply Voltage	24 VDC or 100 to 240 VAC (depending on CPU Unit)