PLCFX5UVerification pending — cross-check with the official manual
FX5U 4423H — Security function error
Warning — monitor
CAUSE
Why does it occur?
• The specified target of security key operation is inaccurate.
REMEDY · Step by step
How to fix it?
• Set target of security key operation to CPU module.
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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