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tion *** PSC Correction *** PSC Correction *** PSC Correction *** PSC Correction *** PSC Correction *** PSC C
Description
2.7 Date and time
2.7
UTC time and local time
Time synchronization
32
Date and time
The internal clock of the PAC4220 measures UTC time. All information about the date and time
(time stamp) that can be called at the communications interfaces must be interpreted as UTC
time.
The PAC4220 display indicates the configured local time corresponding to the time difference
due to time zones and daylight saving time.
UTC time: Universal Time Coordinated (UTC) is the international reference time.
Time zone: Geographical areas with the same positive or negative deviation from UTC time
are grouped together in time zones.
Local time: Local time is UTC time plus or minus the time difference due to the time zone
plus or minus the time difference due to the locally applicable daylight saving time.
Example: 3.36 p.m. CEST (local time in Germany) on September 10, 2022 corresponds to
1.36 p.m. (UTC time) on September 10, 2022. Germany is located in the UTC+1 time zone.
Daylight saving time applies on the above-mentioned date, so the local time is shifted by one
hour ("+1").
1)
The internal clock of the PAC4220 can be synchronized with an external time, e.g. using the "Top
of minute" pulse, or by means of a synchronization command via the available communications
interfaces, or automatically via SNTP (Simple Network Time Protocol).
You can find more information in chapter Ethernet interface (Page 35).
Synchronization is relevant for all measured variables where the time of occurrence is also
captured, e.g. for recording the load profile.
This function will be available at a later time via a firmware update
1)
PAC4220
Equipment Manual, L1V30827278B-01
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