Siemens SINAMICS S120 Commissioning Manual page 147

the drive object of the CU. Alternatively all faults of all drive objects can also be
acknowledged on the CU.
If a set alarm is reset on the drive object of the CU, this alarm also disappears automatically
on the other drive objects to which this alarm was forwarded.
Forwarding of faults and alarms because of BICO interconnections
If two or more drive objects are connected via BICO interconnections, faults and alarms of
drive objects of the type CU, TB30, DMC20, TM31, TM15, TM17, TM15DIDO, TM54F_MA,
TM54F_SL and CU_LINK are forwarded to drive objects of the type AFE, AFEMV, DFEMV,
SIC, BIC, SERVO, VECTOR, VECTOR_MV, VECTOR_GL, VECTOR_SL and TM41. There
is no forwarding of faults and alarms within these two groups of drive object types.
This behavior also applies to the faults and alarms set in a DCC chart on the above drive
object types with the aid of the DCB STM.
Commissioning
Commissioning Manual, (IH1), 07/2007 Edition, 6SL3097-2AF00-0BP7
Diagnosis
3.3 Fault and alarm messages
147