Start-Up  09.02 
4-68  Siemens AG    6SE7087-6AK85-1AA0 
  Rectifier/Regenerating Unit    Operating Instructions 
 
Alarm A083 (Error Warning) 
Errored telegrams are being received or sent and the error counter on the supplementary board has 
exceeded the alarm limit. 
Errored telegrams are ignored. The data most recently transferred remain valid. If the errored telegrams 
contain process data, fault message F082 with fault value 10 may be activated as a function of the 
telegram failure time set in P695. No fault message is generated for PKW data. 
Alarm A084 (Bus Off) 
Errored telegrams are being received or sent and the error counter on the supplementary board has 
exceeded the fault limit. 
Errored telegrams are ignored. The data most recently transferred remain valid. If the errored telegrams 
contain process data, fault message F082 with fault value 10 may be activated as a function of the 
telegram failure time set in P695. No fault message is generated for PKW data. 
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