3 general settings on the device, 1 time management, General settings on the device – Siemens SICLOCK TC 400 User Manual

Page 85: Time management

Parameterization

9-83

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.