
Industrial Communication Networks - Field Bus Specifications - Part 4-12: Data-link Layer Protocol Specification - Type 12 Elements
出版:Nederlands Normalisatie Instituut

专家解读视频
Covers basic time-critical messaging communications between devices in an automation environment. It also provides communication opportunities to all participating data-link entities in a synchronously-starting cyclic manner, and in a cyclic or acyclic asynchronous manner, as requested each cycle by each of those data-link entities.
Supersedes NEN EN IEC 61158-4 and NEN NPR IEC/PAS 62407. (04/2008)
IEC 61158-4-12 Ed. 1.0 - Identical