Siemens SICLOCK TC 400 - Manual (Page 85)

Parameterization
9-83 © Siemens AG 2007 All Rights Reserved
SICLOCK
® TC 400
9.3 General settings on the device
Important general settings are described in the following, e.g. the time adjust-
ment, the synchronization response, etc.
You can find a list of all setting options in Parameter Table (Section 10).
9.3.1 Time management
Setting the time manually
Optionally, you can set the time in the device via one of the following parameters:
• /Time/Local Time (0.09.04) parameter
• /Time/UTC Time (0.09.02) parameter (universal time)
• /Time/TAI Time (0.09.04) parameter (atomic time)
Time zone
The /Time/Time Zone (0.09.06) parameter is used to specify the offset from UTC
to local zone time without possible daylight saving time.
Difference between TAI and UTC
You can read out the difference between atomic time TAI and world time UTC in
seconds with the /Time/Advanced/Atomic Time TAI/Offset From UTC To TAI
(0.09.01) parameter.
Note
Only make changes to the plant time at one central location, ideally at the plant
central clock.
Note
If the external synchronization already contains a time zone (e.g. DCF77 contains
CE/CEDST), this is already taken into account when received.
If the time zone is not defined by the external synchronization (e.g. serial tele-
gram), no further correction is made for the time zone.