Siemens 044 fault code meaning

Series: SIMODRIVE 611U

Connection to option module failed

servo drive

Meaning: The BUS coupling has failed. The option module type, expected from the parameterization, is different for the two axes of a 2-axis module.

Possible causes

Source: SIMODRIVE 611 universal Function Manual FBU 05/2010 (EN, Siemens official site) 7.3