Siemens SINAMICS S120 Commissioning Manual page 294

Diagnostics
3.3 Diagnostic buffer
Communication (PROFIBUS, PROFINET, ...)
● PZD <IF1 or IF2> cyclic data exchange started
● PZD <IF1 or IF2> cyclic data exchange completed
● Changeover to UTC time for operating hours count status <Days> <Milliseconds>
● Time correction (correct) by <correction value> seconds
Exceptions
Exceptions can be taken from the crash diagnostics already available in the new boot run.
The exceptions are always entered into the diagnostic buffer first, even before the entry
"POWER ON".
● Data Abort Exception Address: <Content Program Counter>
● Floating Point Exception Address: <Content Program Counter>
● Prefetch Abort Exception Address: <Content Program Counter>
● Exception type <Type coding> Info: <Info depends on type>
Treatment of the time stamp
After successful time synchronization (in cyclic operation), the UTC time is used as a time
stamp. Up until this time (POWER ON and switching to UTC time) the operating hours
counter is used for all entries. The UTC time is entered for following entries.
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Commissioning Manual, (IH1), 01/2013, 6SL3097-4AF00-0BP3
Commissioning Manual