PLCFX5UVerification pending — cross-check with the official manual
FX5U 2522H — Invalid interrupt
Alarm — operational, inspection needed
CAUSE
Why does it occur?
An invalid interrupt was detected.
REMEDY · Step by step
How to fix it?
Check the interrupt settings and wiring, then correct the program.
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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