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Diagnostics

3.5 Fault and alarm messages

Commissioning Manual

228 Commissioning Manual, (IH1), 01/2011, 6SL3097-4AF00-0BP1

● 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

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.

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Figure 3-13 Structure of alarm buffer

Alarms that occur are entered in the alarm buffer as follows:

A maximum of 64 alarms are displayed in the alarm buffer:

● Index 0 .. 6: The first 7 alarms are displayed.

● Index 7: The most recent alarm is displayed.

A maximum of 56 alarms are displayed in the alarm history:

● Index 8: The most recent alarm is displayed.

● Index 9 .. 63: The first 55 alarms are displayed.