Technical data
Time synchronization (V7.1)
Function Manual, 03/2009, A5E01216578-01
9
Fundamentals
2
2.1 Using time synchronization in PCS 7
Introduction
Plants in which Process Control Systems are used contain numerous components that
exchange data. Most plants require time synchronization for controlling processes and
information. There are additional requirements in terms of the documentation of event
sequences.
If the timing of components in the overall system is not synchronized, these tasks can only
be supported by the internal clock of the individual components.
Components that are equipped with an internal hardware clock (RTC = Real Time Clock)
include:
● Domain servers
● Servers
● Clients
● PC stations
● Automation systems
● I/O
● Sensors
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