Industrial communication networks - Fieldbus specifications - Part 4 -19: Data-link layer protocol specification - Type 19 elements
NORM herausgegeben am 1.12.2019
Bezeichnung normen: ČSN EN IEC 61158-4-19-ed.4
Zeichen: 184020
Katalog-Nummer: 508305
Ausgabedatum normen: 1.12.2019
Zahl der Seiten: 490
Gewicht ca.: 1501 g (3.31 Pfund)
Land: Tschechische technische Norm
Kategorie: Technische Normen ČSN
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, 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