Siemens 300101 fault code meaning

Series: SIMODRIVE 611D

Bus communications failure

servo drive

Meaning: This alarm indicates that there is still no power supply to the drives although the NC is already running. This message comes only if no drive module has been signaled. (In theory, it could also be a bus error interrupting the connection to the 1st module).

Possible causes

Source: SINUMERIK 840D/840Di/810D Diagnostics Manual 11/2006 (EN, Siemens official site) 2.3 SIMODRIVE ALARMS