Siemens Plant Central Clock TC100 - Manual (Page 19)

Description
2-1  © Siemens AG 2010 All Rights Reserved
SICLOCK ® TC100 Operating Instructions
2.6 Redundancy
Redundant external synchronization
Up to four time servers can be run on the SICLOCK TC100 for external synchro-
nization via NTP. However, they must all be in the same IP network.
Radio clocks cannot be connected redundantly to a SICLOCK TC100.
The order of priority among the external synchronizations (radio clock or NTP ser-
ver), and thus the redundancy behavior, can be set with parameters, see
Redundancy (Chapter 9.1.3).
Redundant SICLOCK TC100 central plant clocks
A number of SICLOCK TC100s can be run as redundant time servers in a single
network.
You will find more detailed information in the chapters Configuration Tool
(Chapter 7) and Parameter table (Chapter 10).
You can find more information on redundancy in
„Application Note 0108“ on http://www.siemens.com/siclock under "FAQ".