DeltaV uses the Network Time Protocol (NTP) to synchronize system time for all workstations and controllers on the DeltaV Control Network. Any physical DeltaV workstation can be defined as the Master Time Server node using the Physical Network Properties dialog in DeltaV Explorer.
DeltaV systems that require precise system time derive master time from a Global Positioning System (GPS) network time server configured to a specific IP address on the DeltaV Control Network.
If a GPS network time server is not in use, you can synchronize system time by running deltav\bin\SystemTime.exe to open the DeltaV System Time dialog. By clicking the Apply button in the DeltaV System Time dialog, time and date settings are applied to the Master Time Server node, which broadcasts them to all workstations and controllers on the DeltaV Control Network.
CAUTION!Do not attempt to change system time by using the Windows Date and Time utility, accessed from the Control Panel or the Taskbar clock. The Windows Date and Time utility does not synchronize system time on all workstations and controllers in the DeltaV Control Network. Use the Windows Date and Time utility only to specify the local time zone and to enable the Automatically adjust clock for Daylight Saving Time option.