Technical data

Configuring time synchronization
5.5 Configuring the time synchronization of the OS
Time synchronization (V7.1)
84 Function Manual, 03/2009, A5E01216578-01
Rules
Note
Comply with the following instructions for the time synchronization settings on the OS:
• We recommend parameterizing all OS servers as cooperative time masters.
• During configuration, select the "Use symbolic names" check box. This will display the
network cards that are installed on the OS. However, symbolic names are converted on
the OS in process mode.
• To synchronize the time via the plant bus, configure a device via "Access point 1". In the
following cases configure a second device via "Access point 2".
– If you want to use a redundant device.
– If you want to synchronize two plant busses via one "bridge".
– If you want to synchronize two plant buses as time masters at the same time.
Note
OS servers in a Windows domain
Before you set the time synchronization parameters for a PCS 7 system in a Windows
domain, create a detailed plan of your network structure. This plan must contain all the
relevant information for time synchronization:
• Which computer is the domain controller?
• Which computers belong to the Windows domain and receive their time from the domain
controller?
• Which computers do not belong to the Windows domain and where do they obtain their
time from?
• Which computers are time masters and which are time slaves?