A31412 alarm in Siemens V70 Drive indicates an Error bit set in the serial protocol. This means the absolute encoder detected an error and is broadcasting a fault bit across the serial communication link.
Cause: The encoder sends a set error bit via the serial protocol.
Remedy:
- Carry out a POWER ON (power off/on) for all components.
- Check that the encoder cables are routed in compliance with EMC.
- Check the plug connections.
- Replace the encoder.
