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    I.S. EN 61158-4-21:2012

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    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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 (IEC 61158-4-21:2010 (EQV))

    Available format(s):  Hardcopy, PDF

    Superseded date:  08-07-2019

    Language(s):  English

    Published date:  01-01-2012

    Publisher:  National Standards Authority of Ireland

    For Harmonized Standards, check the EU site to confirm that the Standard is cited in the Official Journal.
    Only cited Standards give presumption of conformance to New Approach Directives/Regulations.

    Dates of withdrawal of national standards are available from NSAI.

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    Table of Contents - (Show below) - (Hide below)

    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
    Annex ZA (normative) - Normative references to international
             publications with their corresponding European
             publications

    Abstract - (Show below) - (Hide below)

    Specifies procedures for the timely transfer of data and control information from one data link user entity to a peer user entity, and among the data link entities forming the distributed data link service provider.

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    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Superseded
    Superseded By

    Standards Referencing This Book - (Show below) - (Hide below)

    IEC 61158-2:2014 Industrial communication networks - Fieldbus specifications - Part 2: Physical layer specification and service definition
    ISO/IEC 7498-3:1997 Information technology Open Systems Interconnection Basic Reference Model: Naming and addressing
    ISO/IEC 7498-1:1994 Information technology Open Systems Interconnection Basic Reference Model: The Basic Model
    IEC TR 61158-1:2010 Industrial communication networks - Fieldbus specifications - Part 1: Overview and guidance for the IEC 61158 and IEC 61784 series
    ISO/IEC 8802-3:2000 Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications
    EN 61158-3-21:2012 Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements
    ISO/IEC 10731:1994 Information technology Open Systems Interconnection Basic Reference Model Conventions for the definition of OSI services
    IEC 61158-6-21:2010 Industrial communication networks - Fieldbus specifications - Part 6-21: Application layer protocol specification - Type 21 elements
    IEC 61588:2009 Precision clock synchronization protocol for networked measurement and control systems
    IEC 61158-5-21:2010 Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements
    IEC 61158-3-21:2010 Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements
    ISO/IEC TR 8802-1:2001 Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 1: Overview of Local Area Network Standards
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