Siemens SICLOCK TC 400 Instructions d'exploitation télécharger pdf (Page 14)

SICLOCK

TC400

Description 2

Modern automation systems consist of a variety of computers, controllers and

systems that exchange data with one another. For real-time operation of such

plants, it is essential that the times of all components are synchronous. This

applies especially for error tracing, when event messages receive a time stamp

and when cause and effect have to be identified through a reliable chronological

sequence.

As plant central clock, SICLOCK TC400 supplies the various plant components

with the exact and reliable time, which is obtained from one or more external syn-

chronizations with an official or legal time, usually GPS or DCF77 radio clocks.

The time is distributed via Ethernet, and also via point-to-point outputs.

Note

Use only one device as plant central clock to supply the time to all components

throughout the plant.

Exception: redundant operation of the plant central clock.

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Siemens SICLOCK TC 400 Instructions d'exploitation Page 14