ČSN EN IEC 61158-4-25

Detail information

Designation: ČSN EN IEC 61158-4-25

Publication date: 01/12/2019

Pages: 72

Country: Czech technical standard

Where to buy?

You can buy at www.mystandards.biz

Anotation

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