Siemens SINAMICS S120 Commissioning Manual page 142

Diagnosis
3.3 Fault and alarm messages
Figure 3-12
Properties of the fault buffer:
● A new fault incident encompasses one or more faults and is entered in "Current fault
● The entries are arranged 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
● If the cause of at least one fault in "Current fault incident" is remedied and acknowledged,
● If "Current fault incident" contains eight faults and a new fault occurs, the fault in the
● 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
Clearing the fault buffer:
● The fault buffer is reset as follows: p0952 = 0
Alarm buffer, alarm history
The alarm buffer comprises the alarm code, the alarm value and the alarm time (received,
resolved). The alarm history occupies the last indices ([8...63]) of the parameter.
142
Structure of the fault buffer
incident".
"Acknowledged fault incident" 1 to 7.
the fault buffer is reorganized. Faults that have not been remedied remain in "Current
fault incident".
parameters in index 7 is overwritten by the new fault.
more accurately; please refer to the fault description for details of the meaning.
Commissioning Manual, (IH1), 07/2007 Edition, 6SL3097-2AF00-0BP7
Commissioning