Omron CJ2 User Manual

6 Troubleshooting
6-20
CJ2 CPU Unit Hardware User’s Manual
A CPU Bus Unit error occurs when there is an error in the data conversion between the CPU Unit and a
CPU Bus Unit.
*1 The exes (XX) indicate the unit number where the error occurred.
*2 The bit corresponding to the unit number where the error occurred turns ON. (Bits 00 to 15 correspond to unit
numbers 0 to F.)
z Recovery Processing Flow
CPU Bus Unit Error (Non-fatal Error)
POWER RUN ERR/ALM
CX-Program-
mer display
Error flag Error code
Error infor-
mation
Lit. Not lit. Flashing. CPU Bus Unit
Error XX
*1
A402.07 0200 to 020F
A417
*2
CPU Bus Unit error
occurs.
Check the location where
the error occurred.
Use the I/O table verification procedure
(refer to 6-1-5 I/O Table Verification) to
check where the error occurred.
Restart the PLC
Turn the power OFF and back ON.
Is the error cleared?
Yes
No
Check the Unit
connections
Replace the Unit
where the error
occurred.
Restart the PLC.
Restart the System.

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)