Siemens 172 fault code meaning
Siemens / 172
Series: SIMODRIVE 611U
External block change for coupling not possible
servo drive
Meaning: If there is an existing coupling, traversing blocks with external block enable are only permitted if P0110 = 2.
Possible causes
Source: SIMODRIVE 611 universal Function Manual FBU 05/2010 (EN, Siemens official site) 7.3