Siemens SINAMICS DCM Operating Instructions Manual page 616

Descriptions of functions
10.32 Diagnostics
Properties of the fault buffer:
● A new fault incident encompasses one or more faults and is entered in "Current fault
incident".
● The entries appear in the buffer according to the time at which they occurred.
● If a new fault incident occurs, the fault buffer is reorganized. The history is recorded in
"Acknowledged fault incident" 1 to 7.
● If the cause of at least one fault in "Current fault incident" is remedied and acknowledged,
the fault buffer is reorganized. Faults that have not been remedied remain in "Current
fault incident".
● If "Current fault incident" contains 8 faults and a new fault occurs, the fault in the
parameters in index 7 is overwritten by the new fault.
● r0944 is incremented each time the fault buffer changes.
● A fault value (r0949) can be output for a fault. The fault value is used to diagnose the fault
more accurately; please refer to the fault description for details of the meaning.
Clearing the fault buffer:
● The fault buffer is reset as follows: p0952 = 0
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SINAMICS DCM Control Module
Operating Instructions, 12/2018, A5E34888669A