1、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)Publication numberingAs from 1 January 1
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7、low)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 00INTERNATIONALSTANDARDIEC62056-42First edition2002-02Electricity met
8、ering 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,electron
9、ic 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 Electro
10、technique Internationale International Electrotechnical Commission 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 co
11、mmunication 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.125.3.8
12、PH-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 communicati
13、ons.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 lay
14、er 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
15、 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 disconnecti
16、on.24Figure B.1 The three-step approach of COSEM.2562056-42 IEC:2002(E)3 INTERNATIONAL ELECTROTECHNICAL COMMISSION_ ELECTRICITY METERING DATA EXCHANGEFOR METER READING,TARIFF AND LOAD CONTROL Part 42:Physical layer services and procedures forconnection-oriented asynchronous data exchangeFOREWORD1)The IEC(International Electrotechnical Commission)is a worldwide organization for standardization comprisingall national electrotechnical committees(IEC National Committees).The object of the IEC is to