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12
TROUBLESHOOTING
12.4 Clearing an error
12 - 66
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EMC AND LOW
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DIRECTIVES
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LOADING AND
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MAINTENANCE AND
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TROUBLESHOOTING APPENDICES INDEX
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.
When multiple enunciators(F) detected are canceled, the first one with No. F only is
canceled.
If the canceling of errors is performed when multiple continuation errors are occurring,
the LED indication and error information of the CPU module operate as follows.
Refer to the following manual for details of error canceling.
QSCPU User's Manual (Function Explanation, Program Fundamentals)
Error Canceling Status
LED Indication *1
("ERR." LED, "BAT." LED,
"USER" LED)
Error Information
(SM0, SM1, SM5, SM16, SD0
to 26)
Before canceling errors On
The error information of the
continuation error that
occurred last is stored.
The error which occurred last
is cancelled.
(The continuation error that is
not canceled remains.)
On
Returned to the status without
error.
Errors other than the
continuation error that
occurred last are cancelled.
(The continuation error that is
not canceled remains.)
On
No change
(The error information that
occurred last is retained.)
All the continuation errors are
cancelled.
Off No error
*1: 1) Error code: When 1600 (BATTERY ERROR) occurs, only "BAT." LED turns on.
Error code: When canceling the error code 1600, "BAT." LED turns off.
2) Error code: When 9000 (F****) occurs, only "USER" LED turns on.
Error code: When canceling the error code 9000, "USER" LED turns off.