Omron CJ2 User Manual

6-19
6 Troubleshooting
CJ2 CPU Unit Hardware User’s Manual
6-1 CPU Unit Errors
6
6-1-7 Handling Errors
A battery error occurs when the battery voltage drops.
z Recovery Processing Flow
z Error Causes and Remedies
Battery Error (Non-fatal Error)
POWER RUN ERR/ALM
CX-Program-
mer display
Error flag Error code
Error infor-
mation
Lit. Not lit. Flashing. Battery Error A402.04 00F7 ---
Suspected cause of
error
Confirmation method Remedy
Prevention of recur-
rence
A connector is discon-
nected.
Check the connection at
the connector.
Reconnect the connector. Check for vibration and
shock.
Battery voltage is low. Check whether the error is
cleared by replacing the
battery.
Replace the battery. Periodically replace the
battery.
Battery error occurs.
Check the battery
connections.
Normal?
Yes
No
Reconnect
Restart the System.
Replace the battery.

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)