Siemens SINAMICS S120 Function Manual page 327

Time stamp mode
The mode for the time stamp can be set via parameter p3100.
Setting
p3100 = 0
p3100 = 1
p3100 = 2
Note
Time stamp settings depending on the firmware version
If a project is upgraded from firmware V4.6 to V4.7 then the time stamp settings for the old
project are retained. The times displayed for the error messages do not therefore differ from
those in the old firmware version.
If a new project is created in firmware version V4.7 and above, the factory setting for the
p3100 = 2 and therefore a different time basis for error messages. If the behavior desired is
the one for older versions than V4.7 then p3100 = 0 should be set.
Drive functions
Function Manual, (FH1), 04/2014, 6SL3097-4AB00-0BP4
Explanation
Time stamp based on operating hours
Time stamp UTC format
Time stamp operating hours + 01.01.2000
Additional setting for firmware V4.7 and above.
With this setting the value in p3102 is used as the time stamp for the error
messages. For firmware versions prior to V4.7 the time basis of p2114 was used
with the setting p3100 = 0.
7.16 Runtime (operating hours counter)
Basic functions
327