5 SETTINGS AND PROCEDURES BEFORE SYSTEM OPERATION
5.6 Execution Method for Self-diagnosis
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This section describes the procedure for self-diagnosis, status during self-diagnosis,
and results after self-diagnosis.
It takes about 5 seconds to complete the self-diagnosis.
(1) Procedure for self-diagnosis
The procedure for self-diagnosis is as follows.
1) Set the CPU module to STOP.
2) Select [Online]
menu of GX Works2.
3) Set 2
(self-diagnosis mode) in the operation mode change request
area (buffer memory address: 8CF
4) Turn on the operation mode change request signal (Y11) to start the
5) The TEST LED on the QJ71PB93D will flash during the self-diagnosis.
(2) Self-diagnosis results
(a) When completed normally
The "TEST LED" and "ERR. LED" go off.
(b) When completed abnormally
The "TEST LED" and "ERR. LED" will light up.
If the self-diagnostic result is an error, any of the following type codes is
stored into the self-diagnostic status type code display area (buffer memory
The type code can be checked in the device/buffer memory batch monitor
of GX Works2.
Result of Self-diagnostics
Swap test error
[Device/Buffer Memory Batch] from the
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