Technical data

Configuring time synchronization
5.1 Introduction
Time synchronization (V7.1)
50 Function Manual, 03/2009, A5E01216578-01
Time synchronization modes
The time synchronization mode is activated when configuring time synchronization.
The following options for synchronizing the time of network components are used in PCS 7:
● Synchronization by means of WinCC time synchronization
The "WinCC time synchronization" application is used to synchronize the time of the
following components:
– PC stations on which the software for an OS server or OS client is installed
– Automation systems in SIMATIC PCS 7 BOX RTX
● SIMATIC mode
SIMATIC mode is used for time synchronization of automation systems on the plant bus
(exception: Automation systems with integrated Ethernet interface;
SIMATIC PCS 7 BOX RTX and SIMATIC PCS 7 AS RTX).
● NTP mode
NTP mode is used for time synchronization of the following components:
– Domain controller (DC)
– Automation systems with integrated Ethernet interface
(order numbers: 6ES7 414-3EM05-0AB0 and 6ES7 416-3ER05-0AB0)
– PC stations on which the software for an OS server or OS client has not been
installed, and which are not synchronized using the DCF 77 reception service.
Typical application for: SIMATIC BATCH, SIMATIC Route Control, engineering station
● Synchronization by means of DCF 77 reception service
The "DCF 77 reception service" application is used to synchronize the time of the
following components:
– PC stations on which the software for an OS server or OS client has not been
installed, and which are not synchronized using NTP mode.
Typical application for: SIMATIC BATCH, SIMATIC Route Control, engineering station