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Multi-Source Function System 7001RC - V02.01
hopf
Elektronik GmbH
Nottebohmstr. 41 • D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: [email protected]
1.3 Difference from a Safety System
At least two independent synchronisation sources (sync. sources) are required for
synchronisation in a safety system. The time information of the available sources is
compared and is only used to synchronise the system if a defined time difference between
the time data is not exceeded.
If the permissible difference is exceeded then the time is not accepted into the clock system
and an error message is output.
In a multi-source system, only one sync. source is used to synchronise the clock system.
The selection of the time source that is used for this purpose depends on the priority of the
respective source and its status.
The received time information in the multi-source system is not checked for
consistency.
