Siemens SINAMICS S120 Installation And Start-Up Manual page 221

S 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:
S The fault buffer is reset as follows: p0952 = 0
Alarm buffer
Alarms that occur are entered in the alarm buffer as follows:
<1> Alarm 8 is overwritten by more recent alarms (except for "Safety alarms").
Fig. 6-14
A maximum of 8 alarms are displayed. If more than 8 alarms are present, the dis-
play is as follows:
Index 0 .. 6
Index 7
Properties of the alarm buffer:
S The entries are arranged in the buffer according to the time at which they
occurred.
S When 8 alarms have been entered in the alarm buffer and a new alarm occurs,
the alarm in the parameters in index 7 are overwritten by the new alarm.
S r2121 is incremented each time the alarm buffer changes.
S An alarm value (r2124) can be output for an alarm. The alarm value is used to
diagnose the alarm more accurately; please refer to the alarm description for
details of the meaning.
Clearing the alarm buffer:
S The alarm buffer is reset as follows: p2111 = 0
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
Alarm code
Alarm 1
r2122[0]
(oldest)
Alarm 2 r2122[1]
Alarm 1
r2122[7]
(most
recent)
Structure of alarm buffer
The first 7 alarms are displayed
The last alarm is displayed
Messages – faults and alarms
Alarm time
Alarm time
Alarm value
"arrived"
r2124[0] [I32] r2123[0] [ms] r2125[0] [ms]
r2134[0] [Float] r2145[0] [d]
r2124[1] [I32] r2123[1] [ms] r2125[1] [ms]
r2134[1] [Float] r2145[1] [d]
r2124[7] [I32] r2123[7] [ms] r2125[7] [ms]
r2134[7] [Float] r2145[7] [d]
Diagnosis
"gone"
r2146[0] [d]
r2146[1] [d]
RESET
<1>
r2146[7] [d]
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