Omron CJ2 User Manual

1-7
1 Overview
CJ2 CPU Unit Hardware User’s Manual
1-2 Basic Operating Procedure
1
1-1-2 CJ2 CPU Unit Features
1-2 Basic Operating Procedure
In general, use the following procedure.
1. Setting Devices and Hardware
2. Wiring
3. Connecting Online to the PLC
4. I/O Allocations
5. Software Setup
6. Creating the Program
8. Basic Program Operation
Wire the power supply, I/O, and communications. Refer to the following manuals.
Connect the personal computer online to the PLC.
Using the CX-Programmer, allocate I/O memory in the CPU Unit to the mounted Units.
Make the PLC software settings.
Create the program using the CX-Programmer.
7. Checking Operation
Set the operating mode to RUN mode to start operation.
Mount the Power Supply Unit, the CPU Unit, the other Units, and the End Covers. Set the DIP switch
and rotary switches as required.
Refer to Section 3 Nomenclature and Functions and Section 5 Installation in the CJ2 CPU Unit
Hardware Operation Manual (Cat. No. W472).
Refer to Section 5 Installation in the CJ2 CPU Unit Hardware Operation Manual (Cat. No. W472).
Refer to Section 11 Programming Devices and Communications in the CJ2 CPU Unit Software
Operation Manual (Cat. No. W473).
Refer to Section 4 Support Software in the CJ2 CPU Unit Hardware Operation Manual (Cat. No.
W472)
Refer to Section 8 I/O Allocations and Unit Settings in the CJ2 CPU Unit Software Operation
Manual (Cat. No. W473)
• CPU Unit initialization: Refer to Section 4 CPU Unit Initialization in the CJ2 CPU Unit
Software Operation Manual (Cat. No. W473).
• DM Area Settings for Special I/O Units and CPU Bus Units: Refer to Section 8 I/O Allocations
and Unit Settings in the CJ2 CPU Unit Software Operation Manual (Cat. No. W473).
• PLC Setup: Refer to Section 9 PLC Setup in the CJ2 CPU Unit Software Operation Manual
(Cat. No. W473).
Refer to Section 5 Programming in the CJ2 CPU Unit Software Operation Manual (Cat. No.
W473).
Refer to 10-7 Debugging in the CJ2 CPU Unit Software Operation Manual (Cat. No. W473).
Check the I/O wiring and the AR Area settings, and perform trial operation. The CX-Programmer can
be used for monitoring and debugging.

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)