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ÖVE/ÖNORM EN 61158-4-11:2013-05

Заменен
Industrial communication networks - Fieldbus specifications - Part 4-11: Data-link layer protocol specification - Type 11 elements (IEC 61158-4-11:2010)
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, according to a pre-established schedule, 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.
ICS
35.110 Networking. Including local area networks (LAN), metropolitan area networks (MAN), wide area networks (WAN), etc. / Организация сети
35.100.20 Data link layer / Уровень звена данных
25.040.40 Industrial process measurement and control / Измерение и контроль производственного процесса