IEC IEC 61158-4-28 Edition 1.02023-03 INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside Industrial communication networks - Fieldbus specifications - Part 4-28: Data-link layer protocol specification - Type 28 elements Reseaux de communication industriels - Specifications des bus de terrain - Partie 4-28: Specification du protocole de la couche liaison de donnees - Elements de type 28 IEC 61158-4-28:2023-03(en-fr) IEC IEC61158-4-28 Edition 1.02023-03 INTERNATIONAL STANDARD NORME INTERNATIONALE colour inside Industrial communication networks - Fieldbus specifications - Part 4-28: Data-link layer protocol specification - Type 28 elements Réseaux de communication industriels - Specifications des bus de terrain - Partie 4-28: Spécification du protocole de la couche liaison de donnees - Eléments de type 28 INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 25.040 ISBN 978-2-8322-6557-4 Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agree. ?RegisteredtrademarkoftheIntern ional ElectrotechnicalCommission Marquedeposéede la Commission Electrotechnique Internationale IEC 61158-4-28:2023 IEC 2023 CONTENTS FOREWORD INTRODUCTION. Scope. 1.1 General. 1.2 Specifications 8 1.3 Procedures 1.4 Applicability .... 1.5 Conformance .. 2 Normative references . 3 Terms, definitions, symbols, abbreviated terms and conventions 3.1 Reference model terms and definitions .... .9 3.2 Service convention terms and definitions .. 3.3 Common terms and definitions. 3.4 Additional Type 28 terms and definitions .... 13 3.5 Additional Type 28 symbols and abbreviations 15 4 Overview of the DL-protocol . 4.1 DLL protocol architecture .. 16 DLL working mechanism .. 4.2 4.2.1 Node .. 4.2.2 Addressing .. 18 4.2.3 Multicast..... 19 4.2.4 Resource mapping and scheduling 19 5 DLPDU structure .. 21 5.1 Universal DLPDU structure . 5.2 Basic configuration DLPDU.. 23 5.3 Address assignment DLPDU ... 25 5.4 Multicast assignment DLPDU, 25 5.5 Resource allocation DLPDU.... 5.6 Access notification DLPDU ... .28 .29 5.7 Resource application DLPDU 5.8 Resource release DLPDU .30 5.9 Status query DLPDU. .30 5.10 Status response DLPDU. 31 5.11 Announcement DLPDU 32 5.12 Clock synchronization DLPDU.. 5.13 CommonDLPDU Working procedure 6 .35 6.1 Initialization procedure.. 6.1.1 Basic configuration .. ...35 6.1.2 Resource mapping configuration... ...35 6.2 DLL node management procedure . .37 6.2.1 DLL maintenance..... .37 6.2.2 Node join ... 6.2.3 Node query..... 6.2.4 Node leave .... 6.3 Data transmission procedure