6
FUNCTIONS
6.17 Self-diagnostics Function
6.17.3 Error Clear
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1. When error cancellation is performed by storing the code of the error to
cancel is stored in SD50, the lower 2 digits of the code number is ignored.
[Example]
When the error codes 2100 and 2101 occur, canceling the error code 2100
will also cancel the error code 2101.
When 2100 and 2111 occur in the error code and error code 2100 is canceled,
error code 2111 is canceled as well.
2. If the cause of the error is not in the CPU module, the error cause cannot be
resolved if error cancellation is performed using the special relay (SM50) and
special register (SD50).
[Example]
Since "SP. UNIT DOWN" is an error that occurred on the Q bus, the error
cause cannot be resolved if error cancellation is performed using the special
relay (SM50) and special register (SD50).
Refer to the error code list in the QCPU User's Manual (Hardware Design,
Maintenance and Inspection), and resolve the error cause.
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