Omron CJ2 User Manual

6-15
6 Troubleshooting
CJ2 CPU Unit Hardware User’s Manual
6-1 CPU Unit Errors
6
6-1-7 Handling Errors
An I/O setting error will occur if the Units that are actually connected do not match the Unit in the regis-
tered I/O tables.
z Recovery Processing Flow
z Error Causes and Remedies
I/O Setting Error (Fatal Error)
POWER RUN ERR/ALM
CX-Program-
mer display
Error flag Error code
Error infor-
mation
Lit. Not lit. Flashing. I/O Setting
Error
A402.09 80E0 ---
Suspected cause of
error
Confirmation method Remedy
Prevention of recur-
rence
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. Same as at the left.
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
continues to occur.
Take measures against
noise. (Investigate the
path of entry.)
•FG
• Power lines
Same as at the left.
I/O setting error
Check the location of
the error.
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?
No
Yes
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)