System Time

The Set/Synchronize Network Time application determines the date and time for the DeltaV system. A single workstation called the master time node keeps time for the entire system and broadcasts the time to the other nodes. The ProfessionalPLUS workstation is the master time node by default. You use the DeltaV Explorer to:

• Set and synchronize the system time
• Define another workstation as the master time node

To set/synchronize the system time

1. Click Tools | Set/Synchronize Network Time.
2. Specify the new time and date.
3. Click Apply to send the time and date changes to the master time node, which broadcasts the time to all nodes on the Control Network.
4. Click Close to close the dialog box without changing the time.

To define another workstation as the master time node

1. Navigate to Physical Network (under System Configuration).
2. Click Physical Network.
3. Click the right mouse button, and then click Properties.
4. In the Physical Network Properties dialog box, click Browse and select the workstation that you want to be the source for the master time.

Caution Do not change the time using the Windows date and time properties. Windows date and time properties do not synchronize the time in all the workstations and controllers. Instead, use the Set/Synchronize Network Time tool (accessed from the Tools command in the DeltaV Explorer) to change the system time. This ensures that all workstations and controllers are synchronized.

Be aware that setting and synchronizing the system time affects event journals and historical data.