PLCXECVerified · sol.ls-electric.com
XEC 33 — I/O Module Access Error
Critical — power cycle required
CAUSE
Why does it occur?
Data of I/O module does not access normally during operation
REMEDY · Step by step
How to fix it?
Check the slot by XG5000, change module, then restart (per parameter)
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
Verified · sol.ls-electric.com
Open PDF ↗XGB Troubleshooting Manual (compact IEC CPU 공통)
3.1 CPU Error Code List · p.41 · -