PLCFX5UVerification pending — cross-check with the official manual
FX5U 3057H — System bus error
Warning — monitor
CAUSE
Why does it occur?
• A timeout occurred during communication with a connected module during system processing. • A timeout occurred during internal bus communications. • Detected that the power to the connected module was turned off.
REMEDY · Step by step
How to fix it?
Continue
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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