Troubleshooting steps
Check encoder cable connections verify cable integrity reseat connectors test continuity
FANUC
431 – Feedback cable alarm
Feedback cable connection error
Details
Encoder feedback cable is disconnected or faulty.
Error typealarm
MeaningFeedback cable
Typical causesEncoder cable disconnected cable damage loose connection
SolutionsCheck encoder cable connections verify cable integrity reseat connectors test continuity
Severityhigh
Catalog references
System Information
FANUC431
Utilities
Troubleshooting Steps
Related
Related FANUC Alarms
FAQ
Common questions
How do I test the cable?
Use multimeter to check continuity. Shake cable while testing to find intermittent faults.