Siemens 776 fault code meaning
Siemens / 776
Series: SIMODRIVE 611U
The older basic module does not support encoder TTL
servo drive
Meaning: For an old basic module, which does not support TTL encoders, a TTL encoder was selected as motor measuring system.
Possible causes
Source: SIMODRIVE 611 universal Function Manual FBU 05/2010 (EN, Siemens official site) 7.3