Table 8-6 PROFINET and PROFIBUS fieldbuses
BF Explanation
Data exchange between the inverter and control system is active
Fieldbus interface is not being used
The fieldbus is improperly configured.
RDY In conjunction with a synchronously flashing LED RDY:
Inverter waits until the power supply is switched off and switched on again after a
firmware update
No communication with higher-level controller
RDY In conjunction with an asynchronously flashing LED RDY:
Incorrect memory card
Firmware update failed
Firmware update is active
Alarms, faults and system messages
8.1 Operating states indicated on LEDs
SINAMICS G120C converter
352 Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
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