PLCXBC/XECVerification pending — cross-check with the official manual
XBC/XEC 50 — External Device Heavy Error
Severe fault — stop & inspect
CAUSE
Why does it occur?
Heavy error of external device.
REMEDY · Step by step
How to fix it?
- Refer to heavy error detection flag
- Modify device and restart
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
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