Rockwell-automation AADvance Controller Solutions Handbook Uživatelský manuál stáhnout pdf (Strana 31)

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Document: 553631

(ICSTT-RM447J_EN_P) Issue: 09:

1-19

The physical network is considered a "Black Channel" so the design of the Ethernet

network and the equipment used does not impact the SIL rating of the

communications interface, but the design of the network does affect the reliability of

the network and does impact the spurious trip rate. SNCP Network data can be

combined on a common network resulting in safety and non-safety data sharing in a

common physical network; this does not compromise the SIL rating of the network

but again does introduce failure modes and possibly security risks which can increase

the spurious trip rate, careful consideration should be given to the network topology

during the applications specification and design phase.

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Rockwell-automation AADvance Controller Solutions Handbook Uživatelský manuál Strana 31