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8.1 Error Processing and Recovery Methods
8.1.1 Checking error description using System Monitor of GX Developer
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TROUBLESHOOTING
The LED display changes according to the operation status of the QD63P6 as follows.
Symbols in the Display contents columns indicate the following status:
: OFF,
: ON
Table 8.3 LED display
Display contents
Display point
Operation status
Action
•RUN LED is OFF.
Hardware fault
If the RUN LED does not turn ON after
the programmable controller is powered
ON, the module is a failure. Replace it.
•RUN LED is ON.
•ERR. LED is OFF.
The module is
normal.
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ERR. LED is ON.
Error
Check the error code (refer to Section
8.5) and fix the error cause.
• A_CH1 LED is ON.
(LED corresponding
to the CH turns ON.)
Phase A pulse is
being input.
-
• B_CH1 LED is ON.
(LED corresponding
to the CH turns ON.)
Phase B pulse is
being input.
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