Siemens SINAMICS G120 Operating Instructions Manual page 384

Alarms, faults and system messages
11.5 List of alarms and faults
Number Cause
A50010 PROFINET name of station invalid
A50020 PROFINET: Second controller
missing
For further information, please refer to the List Manual.
For further information, please refer to the List Manual.
384
Remedy
Correct name of station (p8920) and activate (p8925 = 2).
"Shared Device" is activated (p8929 = 2). However, only the connection
to a PROFINET controller is available.
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
Converter with the CU250S-2 Control Unit (vector)