A time zone is a region on the earth that has a uniform standard time, usually referred to as the local time. Local time is the UTC time plus the current time zone offset for the considered location. Some time zones also have an offset called DST added during the summer period. The DST offset is typically +1 hour.
Consistent date and timestamping across a network is critical for system wide access control, security, communications, scheduling, alarms, and events. Network time uses the NTP protocol that provides the correct current UTC time.
For more information, see Network Time .
The Enterprise Server and Enterprise Central time and date settings are configured through the operating system settings on which the Enterprise Server and Enterprise Central are installed. The time zone offset, configured through the Enterprise Server or Enterprise Central, is added by the EcoStruxure Building Operation software to the UTC time. The Enterprise Server and Enterprise Central time zone settings are therefore independent of the operating system time zone settings.
For more information, see Time and Time Zone Configuration in Enterprise Server and Enterprise Central .
In WorkStation, all times are by default displayed in local time. This means that a time, independent of its source, is displayed in the same time zone as the operating system on which WorkStation is installed. By configuring the operating system time and time zone settings, you configure how times are displayed in WorkStation. For more information, please refer to the manufacturer’s manual for the operating system.
For more information, see Time and Time Zone Configuration in WorkStation .
To adjust the automation server time, time zone, and DST, you have to access the automation server through a WorkStation.
For more information, see Time and Time Zone Configuration in Automation Server .
Using WebStation you can display a list of time configuration issues to see if you must synchronize servers.
For more information, see Diagnostics in WebStation .