Omron CJ2 - Page 170

6 Troubleshooting
6-4
CJ2 CPU Unit Hardware User’s Manual
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.
The following methods can be used to check error log information with the CX-Programmer.
z 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.
z Directly Monitoring the Area where Error Log Information is Stored
1. Connect the CX-Programmer online.
2. Read words A100 to A199.
3. Check the error status from the registered data.
Error Log Information
Checking Error Log Information
A100 4 1 0 2
A101
A102
A103
A104
A105 0 0 F 7
A106
A107
A108
A109
A195 0 0 9 D
A196
A197
A198
A199
4102
00F7
009D
1
2
20
A300
Error log pointer
Error code
Error code
Error code
Order of occurrence
Error Log Area
Error contents
Minute, second
Day, hour
Time of occurrence
Year, month
Error code
Error contents
Error contents
Minute, second
Day, hour
Year, month
Minute, second
Day, hour
Year, month
Time of occurrence
Time of occurrence
The error information is displayed here.
The error code is displayed here.