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EVS-EN IEC 61158-4-12:2019

Industrial communication networks - Fieldbus specifications - Part 4-12: Data-link layer protocol specification - Type 12 elements

General information
Valid from 02.07.2019
Base Documents
IEC 61158-4-12:2019; EN IEC 61158-4-12:2019
Directives or regulations
None
Standard history
Status
Date
Type
Name
02.07.2019
Main
09.12.2014
Main
The data-link layer provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to all participating data-link entities a) in a synchronously-starting cyclic manner, and b) 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.
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