IEC_TR_62541-1-2016.pdf

IEC TR 62541-1 Edition 2.0 2016-10 TECHNICA L R EPOR T OPC unified architecture Part 1:Ov erview and concepts IEC T R 62541-1:2016-10(en)c olourinsideInternational Electrotechnical Commission THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2016 IEC,Geneva,Switzerland All r ights r eserved.Unless otherwise specif ied,no par t of this publication may be reproduced or utilized in any f orm or by any means,electr onic or mechanical,including photocopying and microfilm,without permission in writing f rom 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 f or fur ther information.IEC Central Office Tel.:+41 22 919 02 11 3,r ue de Varemb Fax:+41 22 919 03 00 CH-1211 Geneva 20 infoiec.ch Switzer land www.iec.ch About the IEC The Inter national Electrotechnical Commission(IEC)is the leading global organization that prepares and publishes International Standar ds f or all electr ical,electronic and related technologies.About IEC publications The technical content of IEC publications is kept under constant review by the IEC.Please make sur e that you have the latest edition,a corrigenda or an amendment might have been published.IEC Catalogue-webstore.iec.ch/cat alogue The stand-alone application for consulting the entir e bibliographical information on IEC International Standards,Technical Specifications,Technical Reports and other documents.A vailable for PC,Mac OS,A ndroid Tablets and iPad.IEC publicat ions search-www.iec.ch/searchpub The advanced search enables to find IEC publications by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,replaced and withdraw n publications.IEC Just Published-webstore.iec.ch/just published Stay up to date on all new IEC publications.Just Published details all new publications released.A vailable online and also once a month by email.Electropedia-www.electropedia.org The worlds leading online dictionar y of electronic and electrical terms containing 20 000 terms and definitions in English and French,with equivalent terms in 15 additional languages.A lso known as the International Electrotechnical Vocabular y (IEV)online.IEC Glossar y -st d.iec.ch/glossary 65 000 electrotechnical terminology entries in English and French ex tracted from the Ter ms and Definitions clause of IEC publications issued since 2002.Some entries have been collected from earlier publications of IEC TC 37,77,86 and CISPR.IEC Cust omer Service Centre-webst ore.iec.ch/csc If you wish to give us y our feedback on this publication or need fur ther assistance,please contact the Customer Service Centre:csciec.ch.International Electrotechnical Commission IEC TR 62541-1 Edition 2.0 2016-10 TECHNICA L R EPOR T OPC unified architecture Part 1:Ov erview and concepts INTER NA TIONAL ELECTROTECHNICAL COMMISSION ICS 25.040.40;35.100.01 ISBN 978-2-8322-3640-6 Registered t rademark of t he Int ernational Electrot echnical Commission W arning!Make sure that you obtained this publication from an authorized distributor.c olourinsideInternational Electrotechnical Commission 2 IEC TR 62541-1:2016 IEC 2016 CONTENTS FOREWORD.4 1 Scope.6 2 Normative ref erences.6 3 Terms,def initions and abbreviations.6 3.1 Terms and def initions.6 3.2 Abbreviations.10 4 Structure of the OPC UA series.10 4.1 Specif ication organization.10 4.2 Core specif ication parts.11 4.3 Access Type specif ication parts.12 4.4 Utility specif ication parts.12 5 IEC 62541 standards Overview.13 5.1 UA scope.13 5.2 General.13 5.3 Design goals.13 5.4 Integrated models and services.15 5.4.1 Security model.15 5.4.2 Integrated Add ressSpace model.16 5.4.3 Integrated object model.16 5.4.4 Integrated services.17 5.5 Sessions.17 5.6 Redundancy.17 6 Systems concepts.17 6.1 Overview.17 6.2 OPC UA Cli ents.18 6.3 OPC UA Servers.19 6.3.1 General.19 6.3.2 Real objects.19 6.3.3 OPC UA Server application.19 6.3.4 OPC UA AddressSpace.20 6.3.5 Publisher/subscriber entities.20 6.3.6 OPC UA Service Interf ace.20 6.3.7 Server to Server interactions.21 7 Service Sets.22 7.1 General.22 7.2 Discovery Service Set.22 7.3 SecureChannel Service Set.22 7.4 Session Service Set.23 7.5 NodeManagement Service Set.23 7.6 View Service Set.24 7.7 Query Service Set.24 7.8 Attribute Service Set.24 7.9 Method Service Set.24 7.10 MonitoredItem Service Set.24 7.11 Subscription Service Set.25 Bibliography.26 International Electrotechnical Commission IEC TR 62541-1:2016 IEC 2016 3 Figure 1 OPC UA Specif ication organization.11 Figure 2 OPC UA Target applications.14 Figure 3 OPC UA System architecture.18 Figure 4 OPC UA Client architecture.18 Figure 5 OPC UA Server architecture.19 Figure 6 Peer-to-peer interactions between Servers.21 Figure 7 Chained Server example.22 Figure 8 SecureChannel and Session Services.23 International Electr