
Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements
出版:Netherlands Standards

专家解读视频
NEN-EN-IEC 61158 provides the common elements for basic time-critical messaging communications between devices in an automation environment.
EN IEC 61158-3-21 : 2019 - Identical
IEC 61158-3-21 : 2.0 2019 - Identical
IEC 61158-3-21 : 2.0 2019 - Identical