Technical data

Configuring time synchronization
5.10 Configuring time synchronization with multiple networks
Time synchronization (V7.1)
116 Function Manual, 03/2009, A5E01216578-01
5.10 Configuring time synchronization with multiple networks
5.10.1 Configuring time synchronization for separate networks using a central clock
Introduction
In order to ensure that time synchronization is reliable for separate networks as well, only the
time message frame from the central time clock (SICLOCK TC 400 or SICLOCK TM/TS)
may be transferred to the networks.
● Use SICLOCK TC 400 to synchronize up to four networks.
● If more than four networks must be synchronized, use a suitable switch such as the
SCALANCE X414-3E to separate message frame traffic.
The following example demonstrates synchronization of five networks with a SICLOCK TM
central plant clock, using a SCALANCE X414-3E switch.
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Function for separating message frame traffic
The following function is used to separate message frame traffic between the networks.
● SCALANCE X414-3E switch: Access control
Configure the switches using web-based management.
● OSM/ESM switch: Port lock
Configure the switch using Telnet. You can use web-based management if Java is
installed on the PC station used for configuration.