IEC_62056-42-2002.pdf

INTERNATIONALSTANDARDIEC62056-42First edition2002-02Electricity metering Data exchange for meter reading,tariff and load control Part 42:Physical layer services and proceduresfor connection-oriented asynchronousdata exchangeReference numberIEC 62056-42:2002(E)LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.Publication numberingAs from 1 January 1997 all IEC publications are issued with a designation in the60000 series.For example,IEC 34-1 is now referred to as IEC 60034-1.Consolidated editionsThe IEC is now publishing consolidated versions of its publications.For example,edition numbers 1.0,1.1 and 1.2 refer,respectively,to the base publication,thebase publication incorporating amendment 1 and the base publication incorporatingamendments 1 and 2.Further information on IEC publicationsThe technical content of IEC publications is kept under constant review by the IEC,thus ensuring that the content reflects current technology.Information relating tothis publication,including its validity,is available in the IEC Catalogue ofpublications(see below)in addition to new editions,amendments and corrigenda.Information on the subjects under consideration and work in progress undertakenby the technical committee which has prepared this publication,as well as the listof publications issued,is also available from the following:IEC Web Site(www.iec.ch)Catalogue of IEC publicationsThe on-line catalogue on the IEC web site(www.iec.ch/catlg-e.htm)enablesyou to search by a variety of criteria including text searches,technicalcommittees and date of publication.On-line information is also available onrecently issued publications,withdrawn and replaced publications,as well ascorrigenda.IEC Just PublishedThis summary of recently issued publications(www.iec.ch/JP.htm)is alsoavailable by email.Please contact the Customer Service Centre(see below)forfurther information.Customer Service CentreIf you have any questions regarding this publication or need further assistance,please contact the Customer Service Centre:Email:custserviec.chTel:+41 22 919 02 11Fax:+41 22 919 03 00LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.INTERNATIONALSTANDARDIEC62056-42First edition2002-02Electricity metering Data exchange for meter reading,tariff and load control Part 42:Physical layer services and proceduresfor connection-oriented asynchronousdata exchangePRICE CODE IEC 2002 Copyright-all rights reservedNo part of this publication may be reproduced or utilized in any form or by any means,electronic ormechanical,including photocopying and microfilm,without permission in writing from the publisher.International Electrotechnical Commission3,rue de Varemb Geneva,SwitzerlandTelefax:+41 22 919 0300e-mail:inmailiec.ch IEC web site http:/www.iec.chUFor price,see current catalogue Commission Electrotechnique Internationale International Electrotechnical CommissionLICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREAU.2 62056-42 IEC:2002(E)CONTENTSFOREWORD.41Scope.52Normative references.53Terms,definitions and abbreviations.64Overview.75Service specification.85.1List of services.85.1.1Connection establishment/release related services.85.1.2Data communication services.85.1.3Layer management services.85.2Use of the physical layer services.95.3Service definitions.95.3.1PH-CONNECT.request.95.3.2PH-CONNECT.indication.105.3.3PH-CONNECT.confirm.105.3.4PH-ABORT.request.115.3.5PH-ABORT.confirm.115.3.6PH-ABORT.indication.115.3.7PH-DATA.request.125.3.8PH-DATA.indication.126Protocol specification.136.1Physical layer protocol data unit.136.2Transmission order and characteristics.136.3Physical layer operation description of the procedures.136.3.1General.136.3.2Setting up a physical connection.146.3.3The identification service.156.3.4Data communications.196.3.5Disconnection of an existing physical connection.19Annex A(informative)An example:PH service primitives and Hayes commands.20Annex B(informative)Data model and protocol.25Bibliography.26Figure 1 Typical PSTN configuration.7Figure 2 The location of the physical layer.8Figure 3 Protocol layer services of the COSEM 3-layer connection oriented profile.9Figure 4 MSC for physical connection establishment.15Figure 5 MSC for IDENTIFY.request/.response message exchange.17Figure 6 Handling the identification service at the COSEM server side.17Figure 7 Partial state machine for the client side physical layer.18Figure A.1 MSC for physical connection request.20Figure A.2 Physical connection establishment at the CALLING station.21Figure A.3 MSC for physical connection establishment.22Figure A.4 Data exchange between the calling and called stations.23Figure A.5 MSC for a physical disconnection.24Figure B.1 The three-step approach of COSEM.25LICENSED TO MECON Limited.-RANCHI/BANGALOREFOR INTERNAL USE AT THIS LOCATION ONLY,SUPPLIED BY BOOK SUPPLY BUREA