DS/EN IEC 61158-4-21:2019被替代
Industrial communication networks – Fieldbus specifications – Part 4-21: Data-link layer protocol specification – Type 21 elements
出版：Danish Standards
专家解读视频
The DLL provides basic time-critical data communications between devices in an automated environment.
IEC 61158-4-21:2019 - Identical
EN IEC 61158-4-21:2019 - Identical
IEC 61158-4-21:2019 - Identical
EN IEC 61158-4-21:2019 - Identical
IEC 61158-4-21:2019 - Identical
EN IEC 61158-4-21:2019 - Identical
