Siemens SIMOTION D4 5-2 Series Commissioning And Hardware Installation Manual page 215

Figure 6-34 SINAMICS time synchronization diagnostics buffer entry
Compensation of runtime deviations
To compensate for deviations between the SIMOTION and SINAMICS clocks, the time of
day is automatically resynchronized at regular intervals.
The following behavior must be taken into consideration when setting the SIMOTION time:
● "Time/date to be set" is after "Time/date on SINAMICS": Time and date are corrected on
● "Time/date to be set" is before "Time/date on SINAMICS": The SINAMICS clock must be
Adopting this procedure ensures that the sequence of SINAMICS diagnostics buffer entries
remains the same, even when the runtime differences are aligned.
The SINAMICS clock operates with a resolution of 1 ms. A synchronization accuracy of 1 ms
can be achieved for all bus cycle clocks that can be divided exactly by 1 ms (e.g. 1 ms, 2 ms,
3 ms, etc.).
Due to system considerations, a slightly lower synchronization accuracy is achieved for all
bus cycle clocks that cannot be divided exactly by 1 ms (e.g. 1.25 ms).
SIMOTION D4x5-2
Commissioning and Hardware Installation Manual, 02/2012
the SINAMICS.
stopped until the SINAMICS "Time/date" has caught up with "Time/date to be set".
6.5 Additional information on configuring the SINAMICS Integrated
Commissioning (software)
215