Omron CJ2 User Manual

6-21
6 Troubleshooting
CJ2 CPU Unit Hardware User’s Manual
6-1 CPU Unit Errors
6
6-1-7 Handling Errors
z Error Causes and Remedies
A Special I/O Unit error occurs when there is an error in the data conversion between the CPU Unit and
a Special I/O 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.
z Recovery Processing Flow
Suspected cause of
error
Confirmation method Remedy
Prevention of recur-
rence
An error specific to the
Unit
Refer to the manual for the
particular Unit.
Same as at the left. Same as at the left.
Faulty connection at Unit
(at a connector)
Check the insertion at the
connector. Restart the
Unit and check whether
the error is cleared.
Tighten the screws. Check for vibration and
shock.
Unit failure If restarting the Unit does
not clear the error, check
whether the error is
cleared by replacing the
Unit.
Replace the applicable
Unit.
Same as at the left.
Noise
• Data corruption in bus
signals
Restart the CPU Unit and
check whether the error
occurs again.
Take measures against
noise. (Investigate the
path of entry.)
•FG
• Power lines
Same as at the left.
Special I/O Unit Error (Non-fatal Error)
POWER RUN ERR/ALM
CX-Program-
mer display
Error flag Error code
Error infor-
mation
Lit. Not lit. Flashing. Special IO
Unit Error XX
*1
A402.06 0300 to 035F
or 03FF
A418 to A423
*2
Special I/O Unit error
occurs.
Restart the Special I/O Unit.
Reset, or turn the power OFF and back ON.
Is the error cleared?
Yes
No
Check the Unit connections.
Replace the Special I/O Unit.
Restart the Special I/O Unit.
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)