PLCFX5UVerification pending — cross-check with the official manual
FX5U 3421H — Operation error
Warning — monitor
CAUSE
Why does it occur?
- • When writing data to the data memory by using the SP.DEVST instruction, the number of writes per day exceeded the number set in SD7
- • The value set in SD771 is out of range.
REMEDY · Step by step
How to fix it?
Continue/ stop*1
Do not reset repeatedly before identifying the cause. Repeated resets while ignoring a trip/alarm can cause secondary damage (IGBT failure, motor winding damage, etc.).
SOURCE
Related manual page
Summary based on the official Mitsubishi Electric manual. For accurate and complete information, always consult the official manual.
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