EN 61158-4-7:2008

Industrial communication networks - Fieldbus specifications - Part 4-7: Data-link layer protocol specification - Type 7 elements EN 61158-4-7:2008

Publication date:   Jul 25, 2008

General information

60.60 Standard published   Feb 29, 2008

CENELEC

CLC/TC 65X Industrial-process measurement, control and automation

European Norm

25.040.40   Industrial process measurement and control | 35.100.20   Data link layer

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Scope

It provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to all participating data-link entities in a synchronously-starting cyclic manner, according to a pre-established schedule, and in a cyclic or acyclic asynchronous manner, as requested each cycle by each of those data-link entities. Thus this protocol can be characterized as one which provides cyclic and acyclic access asynchronously but with a synchronous restart of each cycle. It includes the following significant changes with respect to the previous edition deletion of the former Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link layer, for lack of market relevance; addition of new types of fieldbuses; division of this part into multiple parts numbered.

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EN 61158-4:2004

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PUBLISHED
EN 61158-4-7:2008
60.60 Standard published
Feb 29, 2008