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12.4 Canceling Errors
12
TROUBLESHOOTING
12.4 Canceling Errors
CPU module can perform the cancel operation for errors only when the errors allow
the CPU module to continue its operation.
The occurring continuation error can be checked by the bit which is turned "1" of
SD81 (error factor). Error factor/continuation error corresponding to the bit number of
SD81 is shown in Table12.8.
To cancel the errors, follow the steps shown below.
1) Read the special register SD81 with GX Developer and confirm the cause of
the continuation error that currently occurs in the CPU module.
2) Eliminate the cause of the error.
3) Store the error code to be canceled in the special register SD50.
4) Energize the special relay SM50 (OFF ON).
5) Read the special register SD81 with GX Developer again and confirm that the
bit corresponding to the canceled continuation error is turned OFF.
6) Turn the special relay SM50 OFF.
After the CPU module is reset by the canceling of the error, the special relays, special
registers, and LEDs associated with the error are returned to the status under which
the error occurred.
If the same error occurs again after the cancellation of the error, it will be registered
again in the operation/error history.
Table12.8 Error factor/error code corresponding to bit number of SD81
Bit number of SD81/error factor corresponding to
continuation error
Continuation error corresponding to bit number of SD81
Bit number
Error factor
Error code
Error message
0
Instantaneous power failure
1500
AC/DC DOWN
1
Battery low
1600
BATTERY ERROR
2
Standard ROM write count excess
1610
EXCEED MAX FLASH ROM REWRIT.ERR.
3
Test mode continuous RUN tolerance timeout
8100
TEST MODE TIME EXCEEDED
4
Scan timeout
5010
PROGRAM SCAN TIME OVER
5
Annunciator ON
9000
F**** (**** indicates the annunciator number.)
6
Safety remote station detection error
8300
CC-LINK REMOTE DETECTION ERROR
7
Safety remote station product information
mismatch
8310
CC-LINK PRODUCT INFO. MISMATCH
8
Initial monitoring timeout error
Safety monitoring timeout
Error menitoring timeout error
8320
8321
8322
CC-LINK DATA RECEPTION TIMEOUT
9
Safety remote station command error
Safety remote station data split error
Safety remote station link ID error
Safety remote station running number error
Safety remote station reception data error
8330
8331
8332
8333
8334
CC-LINK RECEIVED DATA ERROR