Siemens SICLOCK TC 400 - Manual (Page 19)

Description
2-17 © Siemens AG 2007 All Rights Reserved
SICLOCK
® TC 400
2.6 Redundancy
Redundant external synchronization
Up to two radio clocks and up to four time servers can be operated on the
SICLOCK TC 400 for the external synchronization.
The priorities of the external synchronizations and therefore the redundancy
behavior can be set via parameters, see Redundancy (Section 9.1.3).
Redundant SICLOCK TC 400 plant central clock
A SICLOCK TC 400 can be operated via various ports on a redundant network
and several SICLOCK TC 400 can be operated as servers on one network.
For further information, refer to Chapters Configuration Tool (Section 7) and
Parameter Table (Section 10).
Redundant control of time receivers (output redundancy)
At least two SICLOCK TC 400 are used for an output redundancy. With the appro-
priate parameterization, OUTPUTs 1 and 2 of the two devices can each be con-
nected redundantly with the other.
For further information, refer to Sections Redundant point-to-point connec-
tions (Section 6.4.2) and OUTPUT 1 and 2 redundant (Section 9.2.4).