PLCXBC/XECVerification pending — cross-check with the official manual
XBC/XEC 40 — Scan Watchdog Timeout
Warning — monitor
CAUSE
Why does it occur?
Scan time exceeds scan watchdog time designated by parameter.
REMEDY · Step by step
How to fix it?
- Check scan watchdog time parameter
- Modify parameter or program 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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