Siemens PCS 7 Installation Manual page 46

PC components of a PCS 7 system
3.9 Connecting PC stations
The time master is responsible for distributing the time signal to the PCS 7 components to be
synchronized, for example, operator stations and automation systems.
Synchronization options
The following table below shows the PCS 7 components for which time synchronization is
possible:
Station
Operator station and
maintenance station
BATCH station
Route Control station
SIMATIC PCS 7 BOX
AS
Domain
Time master
Setting the time format in a system
Ensure you set the same time format (12 hour format / 24 hour format) for all programs and
devices.
Additional information
You can find detailed information on time synchronization in the
7; Time Synchronization manual.
46
Synchronization
PCS 7 internal synchronization
The time master can be on one of the following networks:
● On the terminal bus
● On the plant bus
In the case of installation without OS, no synchronization via PCS 7.
You have the following options for synchronization, for example:
● Synchronization via DCF77-client
● Synchronization via the domain controller as the time master on the
terminal bus
PCS 7 internal synchronization is possible. The method used depends
on the product variant (Page 35) (operator station or AS)
● Synchronization via the plant bus
● Synchronization via the domain controller as the time master on the
terminal bus
● The time master is integrated in a PC or connected to the Ethernet
network as a bus component.
● The time master can be any device which can transmit a time signal
via the Ethernet networAdditional information (a PC, for example).
Process Control System PCS
PCS 7 - PC Configuration (V8.2)
Installation Manual, 03/2016, A5E36200050-AB