Error Log Information; Checking Error Log Information; Cx-Programmer Plc Error Window; Directly Monitoring The Area Where Error Log Information Is Stored - Omron CJ2 CPU UNIT User Manual

6 Troubleshooting

Error Log Information

A maximum of 20 error records will be stored in the error log. If more than 20 errors occur, the oldest
error record (in A100 to A104) will be deleted and the 19 records stored in A105 to A199 will be shifted
by one, with the newest record being stored in A195 to A199.
Error code
Order of occurrence
4102
1
00F7
2
009D
20

Checking Error Log Information

The following methods can be used to check error log information with the CX-Programmer.

CX-Programmer PLC Error Window

Check the error log by clicking the Error Log Tab in the PLC Errors Window of the PLC.
The example above shows that unit number 17 has been duplicated for Special I/O Units.
• Error code 80E9: Unit number duplication error
• Error information: 80 "11": 11 hex = 17 decimal
For details on error codes and error information, refer to A-3 Fatal and Non-fatal Error Details.

Directly Monitoring the Area where Error Log Information is Stored

1
Connect the CX-Programmer online.
2
Read words A100 to A199.
6-4
Error Log Area
A100 4 1 0 2
Error code
A101
Error contents
A102
Minute, second
A103 Day, hour
A104
Year, month
A105 0 0 F 7
Error code
A106
Error contents
A107
Minute, second
Day, hour
A108
A109
Year, month
Error code
A195 0 0 9 D
A196 Error contents
A197
Minute, second
A198 Day, hour
A199
Year, month
A300
Error log pointer
Time of occurrence
Time of occurrence
Time of occurrence
The error information is displayed here.
The error code is displayed here.
CJ2 CPU Unit Hardware User's Manual