IEC_61588-2009_IEEE_1588.pdf

IEC 61588Edition 2.0?2009-02INTERNATIONAL STANDARD Precision clock synchronization protocol for networked measurement and control systems IEC 61588:2009(E)IEEE Std.1588(E):2008 IEEE 1588Authorized licensed use limited to:IEEE Xplore.Downloaded on December 18,2014 at 16:39:18 UTC from IEEE Xplore.Restrictions apply.THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2008 IEEE All rights reserved.IEEE is a registered trademark in the U.S.Patent&Trademark Office,owned by the Institute of Electrical and Electronics Engineers,Inc.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 the IEC Central Office.Any questions about IEEE copyright should be addressed to the IEEE.Enquiries about obtaining additional rightsto this publication and other information requests should be addressed to the IEC or your local IEC member National Committee.IEC Central Office The Institute of Electrical and Electronics Engineers,Inc 3,rue de Varemb 3 Park Avenue CH-1211 Geneva 20 US-New York,NY10016-5997 Switzerland USA Email:inmailiec.ch Email:stds-infoieee.org Web:www.iec.ch Web:www.ieee.org 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to search by a variety of criteria(reference number,text,technical committee,).It also gives information on projects,withdrawn and replaced publications.?IEC Just Published:www.iec.ch/online_news/justpub Stay up to date on all new IEC publications.Just Published details twice a month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 Authorized licensed use limited to:IEEE Xplore.Downloaded on December 18,2014 at 16:39:18 UTC from IEEE Xplore.Restrictions apply.IEC 61588Edition 2.0?2009-02INTERNATIONAL STANDARD Precision clock synchronization protocol for networked measurement and control systems INTERNATIONAL ELECTROTECHNICAL COMMISSION XLICS 25.040.40;35.110,35.240.50 PRICE CODEISBN 2-8318-1026-3 IEEE 1588Authorized licensed use limited to:IEEE Xplore.Downloaded on December 18,2014 at 16:39:18 UTC from IEEE Xplore.Restrictions apply.Foreword.xiIEEE introduction.xiv1.Overview.11.1 Scope.11.2 Purpose.21.3 Layout of the document.22.Normative references.33.Definitions,acronyms,and abbreviations.43.1 Definitions.43.2 Acronyms and abbreviations.74.Conventions.84.1 Descriptive lexical form syntax.84.2 Word usage.94.3 Behavioral specification notation.105.Data types and on-the-wire formats in a PTP system.115.1 General.115.2 Primitive data type specifications.115.3 Derived data type specifications.125.4 On-the-wire formats.156.Clock synchronization model.166.1 General.166.2 Principle assumptions about the network and implementation recommendations.166.3 PTP systems.176.4 PTP message classes.176.5 PTP device types.186.6 Synchronization overview.296.7 PTP communications overview.377.Characterization of PTP entities.417.1 Domains.417.2 PTP timescale.417.3 PTP communications.427.4 PTP communication media.467.5 PTP ports.477.6 PTP device characterization.537.7 PTP timing characterization.618.PTP data sets.638.1 General specifications for data set members.638.2 Data sets for ordinary and boundary clocks.658.3 Data sets for transparent clocks.749.PTP for ordinary and boundary clocks.769.1 General protocol requirements for PTP ordinary and boundary clocks.769.2 State protocol.769.3 Best master clock algorithm.839.4 Grandmaster clocks.929.5 Message processing semantics.939.6 Changes in the local clock.10710.PTP for transparent clocks.10710.1 General requirements for both end-to-end and peer-to-peer transparent clocks.10710.2 End-to-end transparent clock requirements.108CONTENTSPublished by IEC under licence from IEEE.2008 IEEE.All rights reserved.IEC 61588:2009(E)IEEE 1588-2008(E)i Authorized licensed use limited to:IEEE Xplore.Downloaded on December 18,2014 at 16:39:18 UTC from IEEE Xplore.Restrictions apply.10.3 Peer-to-peer transparent clock requirements.10811.Clock offset,p