Diagnosis
Messages – faults and alarms
6-219
E Siemens AG, 2004. All rights reserved
SINAMICS S120 Installation and Start-Up Manual, 12/04 Edition
6.3.2 Buffer for faults and alarms
Note
A fault and warning buffer is provided for each drive.
The drive and device-specific messages are entered in this buffer.
The contents of the fault buffer are saved to non-volatile storage when the Control
Unit 320 (CU320) is powered down, i.e. the fault buffer history is still available
when the unit is powered up again.