Siemens F1911 fault code meaning

Series: V90

PROFIdrive: Isochronous cycle fault

servo drive

Meaning: During cyclic operation, the global control telegram failed to synchronize multiple DP clock cycles, or the time window defined in the telegram parameters was violated for multiple consecutive DP clock cycles (see bus cycle time Tdp and Tpllw).

Possible causes

Source: SINAMICS V90 PROFINET, SIMOTICS S-1FL6 Operating Instructions P370