Operating instructions

Description

2-19

SICLOCK

TC400

2.6 Redundancy

Redundant external synchronization

Up to two radio clocks and up to four time servers can be operated on the

SICLOCK T

C400 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 TC400 plant central clock

A SICLOCK TC400 can be operated via various ports

on a redundant network

and several SICLOCK TC400 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 TC400 are used for an output redundancy. With the appro-

priate parameterizati

on, 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).

You can find more information on redundancy in

„Application Note 0108“ on http://www.siemens.com/s

iclock under "FAQ".