Siemens 791 fault code meaning

Series: SIMODRIVE 611U

TTL encoder interface incorrectly parameterized

servo drive

Meaning: The TTL encoder interface may only be parameterized as follows for this particular hardware version: Drive A: P0890 = 0 or 4, 0: Interface inactive, 4: TTL encoder input Drive B: P0890 =

Possible causes

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