Siemens SENTRON PAC4220 - 2.7 Date and Time

2.7 Date and time
UTC time and local time
The int
ernal 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 con󹪝gured local time corresponding to the time di󹪜erence
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 di󹪜erence due to the time zone
plus or minus the time di󹪜erence 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").
Time synchronization
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 󹪝nd 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 pro󹪝le.
1)
This function will be available at a later time via a 󹪝rmware update
Description
2.7Date and time
PAC4220
32 Equipment Manual, L1V30827278B-01
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