1、BRITISH STANDARD BS EN 62056-42:2002 IEC 62056-42:2002 Electricity metering Data exchange for meter reading, tariff and load control Part 42: Physical layer services and procedures for connection-oriented asynchronous data exchange The European Standard EN 62056-42:2002 has the status of a British S
2、tandard ICS 91.140.50; 35.100.10 BS EN 62056-42:2002 This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 16 July 2002 BSI 16 July 2002 ISBN 0
3、580 39993 1 National foreword This British Standard is the official English language version of EN 62056-42:2002. It is identical with IEC 62056-42:2002. The UK participation in its preparation was entrusted to Technical Committee PEL/13, Electricity meters, which has the responsibility to: A list o
4、f organizations represented on this committee can be obtained on request to its secretary. From 1 January 1997, all IEC publications have the number 60000 added to the old number. For instance, IEC 27-1 has been renumbered as IEC 60027-1. For a period of time during the change over from one numberin
5、g system to the other, publications may contain identifiers from both systems. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Co
6、rrespondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does
7、 not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European develo
8、pments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 27, and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication
9、Amd. No. Date CommentsEUROPEAN STANDARD EN 62056-42 NORME EUROPENNE EUROPISCHE NORM June 2002 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B -
10、1050 Brussels 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 62056-42:2002 E ICS 91.140.50; 35.100.10 English version Electricity metering - Data exchange for meter reading, tariff and load control Part 42: Physical layer se
11、rvices and procedures for connection-oriented asynchronous data exchange (IEC 62056-42:2002) Equipements de mesure de lnergie lectrique - Echange des donnes pour la lecture des compteurs, le contrle des tarifs et de la charge Partie 42: Services et procdures de la couche physique pour lchange de don
12、nes laide de connexion asynchrone (CEI 62056-42:2002) Messung der elektrischen Energie - Zhlerstandsbertragung, Tarif- und Laststeuerung Teil 42: Bitbertragungsschichtdienste und Verfahren fr verbindungsorientierten asynchronen Datenaustausch (IEC 62056-42:2002) This European Standard was approved b
13、y CENELEC on 2002-03-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national s
14、tandards may be obtained on application to the Central Secretariat or to any CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and
15、notified to the Central Secretariat has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Por
16、tugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom.Foreword The text of document 13/1266/FDIS, future edition 1 of IEC 62056-42, prepared by IEC TC 13, Equipment for electrical energy measurement and load control, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC
17、 as EN 62056-42 on 2002-03-01. The following dates were fixed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2003-01-01 latest date by which the national standards conflicting with the EN have to be withdr
18、awn (dow) 2005-03-01 The International Electrotechnical Commission (IEC) and CENELEC draw attention to the fact that it is claimed that compliance with this International Standard / European Standard may involve the use of a maintenance service concerning the stack of protocols on which the present
19、standard IEC 62056-42 / EN 62056-42 is based. The IEC and CENELEC take no position concerning the evidence, validity and scope of this maintenance service. The provider of the maintenance service has assured the IEC that he is willing to provide services under reasonable and non-discriminatory terms
20、 and conditions with applicants throughout the world. In this respect, the statement of the provider of the maintenance service is registered with the IEC. Information (see also 6.3.3) may be obtained from: DLMS 1)User Association Geneva / Switzerland www.dlms.ch Annexes designated “normative“ are p
21、art of the body of the standard. Annexes designated “informative“ are given for information only. In this standard, annexe ZA is normative and annexes A and B are informative. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62056-42:2002 was approv
22、ed by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61334-4-41 NOTE Harmonized as EN 61334-4-41:1996 (not modified). IEC 61334-6 NOTE Harmonized as EN 61334-6:2000 (not modifie
23、d). _1)Device Language Message Specification 2egaP 2002:2465026NE 2002enuJ61 Page4BSI16July2002 Page2 EN6205642:2002 BSI16July2002260-6542 CEI:0220(E) 3 CONTENTS 1 Scope.4 2 Normative references .4 3 Terms, definitions and abbreviations 5 4 Overview 6 5 Service specification.7 5.1 List of services 7
24、 5.1.1 Connection establishment/release related services7 5.1.2 Data communication services 7 5.1.3 Layer management services 7 5.2 Use of the physical layer services .8 5.3 Service definitions.8 5.3.1 PH-CONNECT.request 8 5.3.2 PH-CONNECT.indication .9 5.3.3 PH-CONNECT.confirm 9 5.3.4 PH-ABORT.requ
25、est .10 5.3.5 PH-ABORT.confirm .10 5.3.6 PH-ABORT.indication 10 5.3.7 PH-DATA.request11 5.3.8 PH-DATA.indication.11 6 Protocol specification .12 6.1 Physical layer protocol data unit12 6.2 Transmission order and characteristics .12 6.3 Physical layer operation description of the procedures .12 6.3.1
26、 General .12 6.3.2 Setting up a physical connection .13 6.3.3 The identification service.14 6.3.4 Data communications 18 6.3.5 Disconnection of an existing physical connection.18 Annex A (informative) An example: PH service primitives and Hayes commands 19 Annex B (informative) Data model and protoc
27、ol 24 Annex ZA (normative) Normative references to international publications with their corresponding European publications .27 Bibliography25 Figure 1 Typical PSTN configuration6 Figure 2 The location of the physical layer .7 Figure 3 Protocol layer services of the COSEM 3-layer connection oriente
28、d profile8 Figure 4 MSC for physical connection establishment14 Figure 5 MSC for IDENTIFY.request/.response message exchange .16 Figure 6 Handling the identification service at the COSEM server side.16 Figure 7 Partial state machine for the client side physical layer17 Figure A.1 MSC for physical co
29、nnection request 19 Figure A.2 Physical connection establishment at the CALLING station.20 Figure A.3 MSC for physical connection establishment 21 Figure A.4 Data exchange between the calling and called stations.22 Figure A.5 MSC for a physical disconnection .23 Figure B.1 The three-step approach of
30、 COSEM .24 3egaP 2002:2465026NE 2002enuJ61 Page5 BSI16July2002 Page3 EN6205642:2002 BSI16July2002 4 620-6542 CEI:0220(E) ELECTRICITY METERING DATA EXCHANGE FOR METER READING, TARIFF AND LOAD CONTROL Part 42: Physical layer services and procedures for connection-oriented asynchronous data exchange 1
31、Scope This part of IEC 62056 specifies the physical layer services and protocols within the Companion Specification for Energy Metering (COSEM) three-layer connection oriented profile for asynchronous data communication. The document does not specify physical layer signals and mechanical aspects. Lo
32、cal, implementation-specific issues are also not specified. In annex A, an example of how this physical layer can be used for data exchange through the Public Switched Telephone Network (PSTN) using intelligent Hayes modems is given. The use of the physical layer for the purposes of direct local dat
33、a exchange using an optical port or a current loop physical interface is specified in IEC 62056-21. Annex B gives an explanation of the role of data models and protocols in electricity meter data exchange. 2 Normative references The following referenced documents are indispensable for the applicatio
34、n of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. IEC 60050-300:2001, International Electrotechnical Vocabulary Electrical and electronic measurements and measuring instr
35、uments Part 311: General terms relating to measurements Part 312: General terms relating to electrical measurements Part 313: Types of electrical measuring instruments Part 314: Specific terms according to the type of instrument IEC/TR 62051:1999, Electricity metering Glossary of terms IEC 62056-21,
36、 Electricity metering Data exchange for meter reading, tariff and load control Part 21: Direct local data exchange 1 IEC 62056-46, Electricity metering Data exchange for meter reading, tariff and load control Part 46: Data link layer using HDLC protocol 1 IEC 62056-53, Electricity metering Data exch
37、ange for meter reading, tariff and load control Part 53: COSEM application layer 1 IEC 62056-61, Electricity metering Data exchange for meter reading, tariff and load control Part 61: OBIS Object identification system 1 IEC 62056-62, Electricity metering Data exchange for meter reading, tariff and l
38、oad control Part 62: Interface objects 1 NEMA C12.21:1999, Protocol Specification for Telephone Modem Communication _ 1To be published. 4egaP 2002:2465026NE 2002enuJ61 Page6BSI16July2002 Page4 EN6205642:2002 BSI16July2002260-6542 CEI:0220(E) 5 3 Terms, definitions and abbreviations 3.1 Terms and def
39、initions For the purpose of this part of IEC 62056, the definitions in IEC 60050-300 and IEC/TR 62051 as well as the following definitions apply: 3.1.1 client a station asking for services, normally the master station 3.1.2 master central station station which takes the initiative and controls the d
40、ata flow 3.1.3 server a station delivering services. The tariff device (meter) is normally the server, delivering the requested values or executing the requested tasks 3.1.4 slave station responding to requests of a master station. The tariff device (meter) is normally a slave station 3.2 Abbreviati
41、ons COSEM COmpanion Specification for Energy Metering DCE Data Communication Equipment (communications interface or modem) DTE Data Terminal Equipment (computers, terminals or printers) MSC Message Sequence Chart PDU Protocol Data Unit PH PHysical layer PHPDU PHysical layer Protocol Data Unit PHSDU
42、PHysical layer Service Data Unit SDU Service Data Unit 5egaP 2002:2465026NE 2002enuJ61 Page7BSI16July2002 Page5 EN6205642:2002 BSI16July2002 6 620-6542 CEI:0220(E) 4 Overview From the external point of view, the physical layer provides the interface between the DTE and the DCE, see Figure 2. Figure
43、1 shows a typical configuration for data exchange through a wide area network, for example the PSTN. kWh Schlumberge r 00001,6 10 (40)A 230V 50Hz (o) N 00012356 Transit network DTE to DCE ITU-T V series EIA RS232, RS485 Hayes, etc. DCE to DTE ITU-T V series EIA RS232, RS485 Hayes, etc Figure 1 Typic
44、al PSTN configuration From the physical connection point of view, all communications involve two sets of equipment represented by the terms caller system and called system. The caller is the system that decides to initiate a communication with a remote system known as the called party; these denomin
45、ations remain valid throughout the duration of the communication. A communication is broken down into a certain number of transactions. Each transaction is represented by a transmission from the transmitter to the receiver. During the sequence of transactions, the caller and called systems take turn
46、s to act as transmitter and receiver. From the data link point of view the central station normally acts as a master, taking the initiative and controlling the data flow. The tariff device is the slave, responding to the master station. From the application point of view the central station normally
47、 acts as a client asking for services, and the tariff device acts as a server delivering the requested services. The situation involving a caller client and a called server is undoubtedly the most frequent case, but a communication based on a caller server and a called client is also possible, in pa
48、rticular to report the occurrence of an urgent alarm. For the purpose of local data exchange, two DTEs can be directly connected using appropriate connections. To allow using a wide variety of media, this standard does not specify the physical layer signals and their characteristics. However, the following assumptions are made: the communication is point to point or point to multipoint; both half-duplex and duplex connections are possible; asynchronous transmission with 1 start bit, 8 data bits, no parity and 1 stop bit (8N1). COSEM client COSEM server DTE DTE DCE DCE
