PLCFX5UVerification pending — cross-check with the official manual
FX5U 2840H — File name specification error
Alarm — operational, inspection needed
CAUSE
Why does it occur?
An invalid file name was specified in an instruction.
REMEDY · Step by step
How to fix it?
Check and correct the file name specified in the instruction.
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.
Open official manual ↗CALLBACK
Request an expert callback
A 12-year automation/SI engineer responds directly. Reply within 1–3 business days.