I.S. EN IEC 61158-4-4:2019被替代
Industrial communication networks - Fieldbus specifications - Part 4-4: Data-link layer protocol specification - Type 4 elements
出版：National Standards Authority of Ireland
专家解读视频
The data-link layer provides basic time-critical messaging communications between devices in an automation environment.
IEC 61158-4-4:2019 - Identical
EN IEC 61158-4-4:2019 - Identical
IEC 61158-4-4 : 3.0 - Identical
IEC 61158-4-4 : 3.0 - Identical
EN IEC 61158-4-4:2019 - Identical
