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ÖVE/ÖNORM EN 61158-4-2:2015-10

Заменен
Industrial communication networks - Fieldbus specifications -- Part 4-2: Data-link layer protocol specification - Type 2 elements (IEC 61158-4-2:2014) (english version)
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, sequentially and in a cyclic synchronous manner. Foreground scheduled access is available for time-critical activities together with background unscheduled access for less critical activities.
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