BS EN IEC 61158-3-4:2019被替代
Industrial communication networks. Fieldbus specifications. Data-link layer service definition. Type 4 elements
出版：British Standards Institution
专家解读视频
This part of IEC 61158 provides common elements for basic time-critical messaging communications between devices in an automation environment.
EN IEC 61158-3-4:2019 - Identical
IEC 61158-3-4 : 3.0 - Identical
IEC 61158-3-4 : 3.0 - Identical
IEC 61158-3-4:2019 - Identical
EN IEC 61158-3-4:2019 - Identical
