I.S. EN IEC 61158-4-21:2019
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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Industrial communication networks - Fieldbus specifications - Part 4-21: Data-link layer protocol specification - Type 21 elements
Hardcopy , PDF
14-05-2023
English
09-07-2019
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Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviations
4 Overview of the data-link protocol
5 General structure and encoding
6 DLPDU structure and procedure
7 DLE elements of procedure
8 Constants and error codes
Bibliography
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