IEC_62439-6-2010.pdf

IEC 62439-6Edition 1.0 2010-02INTERNATIONAL STANDARD Industrial communication networks High availability automation networks Part 6:Distributed Redundancy Protocol(DRP)IEC 62439-6:2010(E)colourinsideLICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 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to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month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/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.IEC 62439-6Edition 1.0 2010-02INTERNATIONAL STANDARD Industrial communication networks High availability automation networks Part 6:Distributed Redundancy Protocol(DRP)INTERNATIONAL ELECTROTECHNICAL COMMISSION XB ICS 25.040,35.040 PRICE CODEISBN 2-8318-1081-6 Registered trademark of the International Electrotechnical Commission colourinsideLICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62439-6 IEC:2010(E)CONTENTS FOREWORD.5 INTRODUCTION.7 1 Scope.8 2 Normative references.8 3 Terms,definitions,abbreviations,acronyms,and conventions.8 3.1 Terms and definitions.8 3.2 Abbreviations and acronyms.9 3.3 Conventions.9 4 Overview.9 4.1 Principles.9 4.2 Ring ports.10 4.3 DRP switch node.10 4.4 Single ring topology redundancy.11 4.5 Double ring topology redundancy.11 4.6 Configuration.12 4.6.1 Overview.12 4.6.2 Manufacturer configuration.12 4.6.3 Communication configuration.12 4.6.4 Application configuration.13 4.7 Start up.13 5 DRP communications.13 5.1 Overview.13 5.2 Communication procedure.15 5.3 Fault detection and recovery.18 5.3.1 General.18 5.3.2 Handling in a single ring network.19 5.3.3 Handling in a double ring network.20 5.4 Repairing the inter-switch link fault.21 5.5 Repairing time synchronization fault.21 5.6 Inserting a repaired switch node.22 5.7 Inserting a new switch node.23 6 DRP class specification.23 7 DRP attributes.24 8 DRP services.27 8.1 Read.27 8.2 Write.30 9 DRP protocol specification.32 9.1 Basic types encoding.32 9.2 ErrorDescription encoding.32 9.3 Encoding of DRP Class.33 9.4 PDU description.34 9.4.1 Encoding of DRP DLPDU.34 9.4.2 Encoding of DLSDU.35 9.4.3 Encoding of VLAN.35 9.4.4 Ethertype.35 LICENSED TO MECON LIMITED-RANCHI/BANGALORE,FOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.62439-6 IEC:2010(E)3 9.4.5 Encoding of DRP PDU.35 9.4.6 Encoding of DRP_DATA.36 9.4.7 Encoding of Read Service.40 9.4.8 Encoding of Write Service primitives.42 9.5 Protocol machine.44 9.5.1 Switch node states description.44 9.5.2 Protocol State Machine description.44 9.5.3 State transitions.45 9.5.4 Function descriptions.52 Bibliography.64 Figure 1 DRP communication model.10 Figure 2 Single ring topology redundancy.11 Figure 3 Double ring topology redundancy.12 Figure 4 DRP communication procedure.14 Figure 5 Inserting a new switch node into the DRP system.14 Figure 6 Fault detection and recovery.15 Figure 7 Fault detection and rec