Omron CJ2 User Manual

3 Nomenclature and Functions
3-24
CJ2 CPU Unit Hardware User’s Manual
z Application Precautions
• Interrupt Input Units must be mounted in the locations described below.
When using a CJ2H-CPU@@-EIP CPU Unit, all Interrupt Input Units must be connected in any of
the four positions immediately to the right of the CPU Unit. If connected in any other position in
the CPU Rack or anywhere in an Expansion Rack, and I/O setting error (fatal) will occur.
• The Interrupt Input Units must be connected to slot numbers 0 to 3 even when the I/O tables are
edited using the CX-Programmer. If the Interrupt Input Units are not connected in the correct posi-
tions, an error will occur when the I/O tables are generated from the CX-Programmer. A401.10 will
turn ON to indicate an I/O setting error and A405.08 will turn ON to indicate that an Interrupt Input
Unit is in the wrong position.
Note Even if a Unit is physically in one of the correct positions, a Dummy Unit can be registered in the I/O tables,
causing a Unit to be defined in a position different from its physical position.
• There are limits to the number of Interrupt Input Units that can be mounted. If these limits are
exceeded, a too many I/O points error (fatal error) will occur.
• The input response time cannot be changed for the CJ1W-INT01, and the related portions of the
Basic I/O Unit input time constants in the PLC Setup, and the setting status in A200 to A259 will not
be valid.
z Input Signal Width
Input signals must meet the following conditions.
Unit ON time OFF time
CJ1W-INT01 0.05 ms min. 0.5 ms min.
0 1 2 3 4 5 6 7 8 9
Power
Supply
Unit
CPU
Unit
Connect here.
Cannot be used.
ON OFF

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)