348
Error Logs Section 11-4
11-4-3 Error Log Table Configuration
Error Codes and Details Refer to the list of error codes and details on page 348.
Time of Error The time the error occurred is recorded including the year (rightmost two dig-
its), month, day, hour, minute, and second in 1-byte BCD (binary coded deci-
mal).
Reading and Clearing
Error Log Tables
The error log table can be read or cleared using FINS commands sent to the
Serial Communications Board or Serial Communications Unit. Refer to 11-4-6
Reading and Clearing Error Log Tables for details.
Note The Serial Communications Board and Serial Communications Unit use the
time information read from the CPU Unit. If the time cannot be read from the
CPU Unit, the time of the error in the error log will be recorded as all zeros.
For all CS/CJ-series PLCs, the time of the CPU Unit’s built-in clock must be
set when the power is turned ON after the battery is mounted. If the built-in
clock time is not set, the time recorded in the error log will be incorrect, and
when the error log is read, the time will be irregular.
11-4-4 Error Codes and Details
Bit
Record
(oldest)
Record
(newest)
Record
15 08 07 00
Error code
Details
Error code
Details
Error code
Details
Minute Second
Day Hour
Year Month
Minute Second
Day Hour
Year Month
Minute Second
Day Hour
Year Month
Error code Error contents Details Stored in
EEPROM
First byte Second byte
0001 Hex CPU Unit watchdog timer
error
Always 00 Hex Always 00 Hex Yes
0002 Hex CPU Unit service monitoring
error
Monitoring time (Unit: 1 ms) Yes
0006 Hex Other CPU Unit errors Bit 11: The unit number is not included in the registered I/
O tables.
Other bits not used.
Ye s
000F Hex CPU Unit initial processing
error
Always 00 Hex Always 00 Hex Yes
0011 Hex CPU Unit initial processing
error
Not fixed Not fixed Yes
0012 Hex CPU Unit memory error 01 Hex: Read error
02 Hex: Write error
03 Hex: Routing tables
05 Hex: CPU Bus Unit/
Inner Board DM Area
No
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