Date And Time - Siemens SENTRON PAC4200 Manual

Voltage dips/voltage swells/voltage interruptions
The specifications refer to the nominal measuring voltage (L-N) in accordance with
IEC 61000-4-30. In a 3-wire system, the specification refers to measuring voltage (L-L).
Threshold violations, which can be defined by the user, are entered in the event list as
events.
2.7

Date and time

UTC time and local time
The internal clock of SENTRON PAC4200 measures UTC time. All information about the
date and time (time stamp) that can be called at the communication interfaces must be
interpreted as UTC time.
The SENTRON PAC4200 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, 2008 corresponds to
1.36 p.m. (UTC time) on September 10, 2008. 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").
Synchronization of clock time
The internal clock of the SENTRON PAC4200 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 communication interfaces, or automatically via SNTP (Simple Network Time
Protocol).
You can find more information in chapter Ethernet interface (Page 38).
Synchronization is relevant for all measured variables where the time of occurrence is also
captured, e.g. for recording the load profile.
PAC4200
System Manual, 05/2019, A5E02316180B-05
Description
2.7 Date and time
33