IEC_61158-4-7-2007.pdf

IEC 61158-4-7Edition 1.0 2007-12INTERNATIONAL STANDARD Industrial communication networks Fieldbus specifications Part 4-7:Data-link layer protocol specification Type 7 elements IEC 61158-4-7:2007(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2007 IEC,Geneva,Switzerland All rights reserved.Unless otherwise specified,no part of this publication may be reproduced or utilized in any form or by any means,electronic or mechanical,including photocopying and microfilm,without permission in writing from either IEC or IECs member National Committee in the country of the requester.If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,please contact the address below or your local IEC member National Committee for further information.IEC Central Office 3,rue de Varemb CH-1211 Geneva 20 Switzerland Email:inmailiec.ch Web:www.iec.ch About the IEC The International Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standards for all electrical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sure that you have the latest edition,a corrigenda or an amendment might have been published.?Catalogue of IEC publications:www.iec.ch/searchpub The IEC on-line Catalogue enables you to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month all new publications released.Available on-line and also by email.?Electropedia:www.electropedia.org The worlds leading online dictionary of electronic and electrical terms containing more than 20 000 terms and definitions in English and French,with equivalent terms in additional languages.Also known as the International Electrotechnical Vocabulary online.?Customer Service Centre:www.iec.ch/webstore/custserv If you wish to give us your feedback on this publication or need further assistance,please visit the Customer Service Centre FAQ or contact us:Email:csciec.ch Tel.:+41 22 919 02 11 Fax:+41 22 919 03 00 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 61158-4-7Edition 1.0 2007-12INTERNATIONAL STANDARD Industrial communication networks Fieldbus specifications Part 4-7:Data-link layer protocol specification Type 7 elements INTERNATIONAL ELECTROTECHNICAL COMMISSION XEICS 35.100.20;25.040.40 PRICE CODEISBN 2-8318-9434-4LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 61158-4-7 IEC:2007(E)CONTENTS FOREWORD.6 INTRODUCTION.8 1 Scope.9 1.1 General.9 1.2 Specifications.9 1.3 Procedures.9 1.4 Applicability.9 1.5 Conformance.9 2 Normative references.10 3 Terms,definitions,symbols and abbreviations.10 3.1 Reference model terms and definitions.10 3.2 Service convention terms and definitions.11 3.3 Other terms and definitions.12 3.4 Symbols and abbreviations.16 4 Overview of the DL-protocol.18 4.1 Overall description of medium allocation.18 4.2 Types of entities.20 4.3 Addressing.23 4.4 Flow control.29 4.5 Graphical representation.31 5 General structure and encoding of PhIDUs and DLPDUs and related elements of procedure.32 5.1 DLPDU formats and components.32 5.2 Description of each DLPDU component.32 5.3 PhIDU structure and encoding.36 5.4 Common DLPDU structure,encoding and elements of procedure.37 5.5 Valid DLPDU types.37 5.6 DLL timers.39 6 DLPDU-specific structure,encoding and element of procedure.43 6.1 General.43 6.2 Buffer read.43 6.3 Buffer write.44 6.4 Buffer transfer.44 6.5 Specified explicit request.45 6.6 Free explicit request.50 6.7 Messaging.53 6.8 Acknowledged messaging.58 6.9 Numbering of acknowledged messages.62 6.10 Behavior with mismatched parameters.64 7 DL-service elements of procedure,interfaces and conformance.66 7.1 General.66 7.2 Producer/consumer entity.67 7.3 Protocol elements by service.70 7.4 Bus arbitrator operation.77 7.5 Bridges.85 7.6 Interfaces.92 LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.61158-4-7 IEC:2007(E)3 7.7 Conformance.94 Annex A(informative)Exemplary FCS implementation.97 Annex B(informative)Object modeling.99 B.1 Modeling of the IDENTIFIER object.99 B.2 Description of the IDENTIFIER object attributes.99 B.3 Modeling of the QUEUE object.103 B.4 Description of the QUEUE object attributes.103 B.5 Modeling of the BUFFER object.104 B.6 Description of the BUFFER object attributes.104 Annex C(informative)Topology of multi-segment DL-subnetwork.106 C.1 Introduction.106 C.2 Global specification.106 C.3 Local s