Siemens Plant Central Clock TC100 - Manual (Page 81)

Parameter assignment
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SICLOCK ® TC100 Operating Instructions
9.3 General settings on the device
The important general settings are described in the following, e.g. the time adjust-
ment, the synchronization response etc.
You will find a list of all the setting options in Parameter table (Chapter 10).
9.3.1 Time management
Setting the time manually
You can set the time in the device optionally with one of the following parameters:
• Parameter /Time/Local Time (0.09.04)
• Parameter /Time/UTC Time (0.09.02) (uniform universal time)
• Parameter /Time/TAI Time (0.09.03) (atomic time)
Time zone
You define the offset from UTC to the zone time, without any daylight saving, with
the parameter /Time/Time Zone (0.09.06).
Difference between TAI and UTC
You can readout the difference between atomic time TAI and universal time UTC
in seconds with the parameter /Time/Extended/Atomic Time TAI/Offset from UTC
to TAI (0.09.01).
Note
Change the plant time at one single, central point, ideally on the central plant
clock.
Note
If the external synchronization already contains a time zone (e.g. DCF77 contains
CET/CEST), this is taken into account on reception.
If the time zone is not defined by the external synchronization (e.g. serial tele-
grams), then no further time zone correction is made.