EN 62056-42-2002 en Electricity Metering - Data Exchange for Meter Reading Tariff and Load Control Part 42 Physical Layer Services and Procedures for Connection-Oriented Asynchrono.pdf

1、BRITISH STANDARD BS EN IEC 62056-42 12002 62056-42 12002 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

2、 Standard ICs 91.140.50; 35.100.10 British Sta nda rds NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 6205642:2002 Amd. No. 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

3、UKparticipation in its preparation was entrusted to Technical Committee PEL/13, Electricity meters, which has the responsibility to: Date Comments This British Standard, having been prepared under the direction of the Electrotechnical Sector Policy and Strategy Committee, was published under the aut

4、hority of the Standards Policy and Strategy Committee on 16 July 2002 - - aid enquirers to understand the text; present to the responsible internationalEuropean committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international a

5、nd European developments and promulgate them in the UK. - A list of 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 6002

6、7-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers from both systems. Cros s-r e fer en ces The British Standards which implement international or European publications referred to in this document may be found in the BSI Sta

7、ndards Catalogue under the section entitled “International Standards Correspondence 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

8、 for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. 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 do

9、cument indicates when the document was last issued. OBSI 16 July 2002 ISBN O 580 39993 I EUROPEAN STANDARD EN 62056-42 NORME EUROP .ENNE EUROPfISCHE NORM June 2002 ICs 91.140.50; 35.100.10 English version Electricity metering - Data exchange for meter reading, tariff and load control Part 42: Physic

10、al layer services and procedures for connection-oriented asynchronous data exchange (I EC 62056-4212002) Equipements de mesure de Inergie lectrique - Echange des donnes pour la lecture des compteurs, le contre des tarifs et de la charge Partie 42: Services et procdures de la couche physique pour Ich

11、ange de donnes $ laide de connexion asynchrone (CE1 62056-42 12002) Messung der elektrischen Energie - Z%hierstand s, bertragung, Tarif- und Laststeuerung Teil 42: Bit, bertragungsschichtdienste und Verfahren far verbindungsorientierten asynchronen Datenaustausch (I E C 62 056-42 120 02) This Europe

12、an Standard was approved by CENELEC on 2002-03-01. CENELEC members are bound to comply with the CENICENELEC 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

13、concerning such national standards 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

14、into its own language and notified to the Central Secretariat has the same status as the oficial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta,

15、 Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique EuropYkches Komitee f, r Elektrotechnische Normung Central Secretariat: rue de Stassart 35. B - 105

16、0 Brussels O 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 Page 2 EN 62056-422002 Foreword The text of document 13/1266/FDIS, future edition 1 of IEC 62056-42, prepared by IEC TC 13, Equipment for electrical

17、energy measurement and load control, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC 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 end

18、orsement latest date by which the national standards conflicting with the EN have to be withdrawn (dop) 2003-01-01 (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 / Europea

19、n Standard may involve the use of a maintenance service concerning the stack of protocols on which the present 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 s

20、ervice has assured the IEC that he is willing to provide services under reasonable and non-discriminatory terms 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

21、be obtained from: DLMSI) User Association Geneva / Switzerland www.dlms.ch Annexes designated “normative“ are part 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

22、been added by CENELEC. En dorse ment not i ce The text of the International Standard IEC 62056-42:2002 was approved 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

23、 NOTE Harmonized as EN 61 334-4-41 :I996 (not modified). IEC 61334-6 NOTE Harmonized as EN 61 334-6:2000 (not modified). 1) Device Language Message Specification O BSI 16 July 2002 Page 3 EN 62056-422002 CONTENTS 1 Scope . 2 Normative references . 5.1 List of services . 5.1 .I Connection establishme

24、ntlrel 5.1.2 Data communication services 7 5.1.3 Layer management services 7 5.2 Use of the physical layer services . 8 5.3.1 PH-CONNECT.request 8 5.3.2 PH-CONNECT.indication . 9 5.3.3 PH-CONNECT.confirm 9 5.3.4 PH-ABORT.req uest 5.3.5 PH-ABORT.confirm 5.3.7 PH-DATA.request 8 5.3 Service definitions

25、 6 Protocol specification . 6.1 6.2 Transmission order and characteristics 6.3 Physical layer protocol data unit Physical layer operation - description of the procedures . 12 6.3.1 General . 12 6.3.2 Setting up a physical connection . 13 6.3.3 The identification service . 14 6.3.4 Data communication

26、s 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 protocol 24 Annex ZA (normative) Normative references to international publications with their corresponding European pu

27、blications . 27 Bibliography . .25 Figure 1 - Typical PSTN configuration Figure 2 -The location of the physical layer . Figure 3 - Protocol layer services of the COSEM 3-layer connection oriented profile Figure 5 - MSC for IDENTIFY.request/.response message exchange . 16 Figure 6 - Handling the iden

28、tification service at the COSEM server side . 16 Figure A.l - MSC for physical connection request Figure A.2 - Physical connection establishment at the CALLING station Figure A.3 - MSC for physical connection establishment Figure A.4 - Data exchange between the calling and called stations. Figure A.

29、5 - MSC for a physical disconnection . Figure B.l - The three-step approach of COSEM . Figure 4 - MSC for physical connection establishment Figure 7 - Partial state machine for the client side physica 17 19 20 21 22 23 24 O BSI 16 July 2002 Page 4 EN 62056-422002 ELECTRICITY METERING - DATA EXCHANGE

30、 FOR METER READING, TARIFF AND LOAD CONTROL - Part 42: Physical layer services and procedures for con nect i on -or en t ed as yn c h ron o us da ta exchange 1 Scope This part of IEC 62056 specifies the physical layer services and protocols within the Companion Specification for Energy Metering (COS

31、EM) three-layer connection oriented profile for asynchronous data communication. The document does not specify physical layer signals and mechanical aspects. Local, implementation-specific issues are also not specified. In annex A, an example of how this physical layer can be used for data exchange

32、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 data 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

33、 of data models and protocols in electricity meter data exchange. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced docum

34、ent (including any amendments) applies. I EC 60050-300:2001, Infernafional Elecfrofechnical Vocabulary -lecfrica1 and elecfronic measuremenfs and measuring insfrumenfs - Parf 31 1: General ferms relafing fo measuremenfs - Parf 312: General ferms relafing fo elecfrical measuremenfs - Parf 313: Types

35、of elecfrical measuring insfrumenfs - Parf 314: Specific ferms according fo fhe type of insfrumenf IEC/TR 62051 :I 999, Elecfricify mefering - Glossary of ferms IEC 62056-21, Elecfricify mefering - Dafa exchange for mefer reading, fariff and load confrol - Parf 21: Direcf local dafa exchange 1 IEC 6

36、2056-46, Elecfricify mefering - Dafa exchange for mefer reading, fariff and load confrol - Parf 46: Dafa link layer using HDLC profocol 1 IEC 62056-53, Elecfricify mefering - Dafa exchange for mefer reading, fariff and load confrol - Parf 53: COSEM applicafion layer 1 IEC 62056-61, Elecfricify mefer

37、ing - Dafa exchange for mefer reading, fariff and load confrol - Parf 61: OBIS Objecf idenfificafion sysfem 1 IEC 62056-62, Elecfricify mefering - Dafa exchange for mefer reading, fariff and load confrol - Parf 62: Inferface objecfs 1 NEMA C12.21:1999, Profocol Specificafion for Telephone Modem Comm

38、unicafion _ 1 To be published O BSI 16 July 2002 Page 5 EN 62056-422002 3 Terms, definitions and abbreviations 3.1 Terms and definitions 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 ask

39、ing for services, normally the master station 3.1.2 master central station - station which takes the initiative and controls the data 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.

40、1.4 s I ave station responding to requests of a master station. The tariff device (meter) is normally a slave station 3.2 Abbreviations COSEM DCE DTE MSC PDU PH PHPDU PHSDU SDU Companion Specification for Energy Metering Data Communication Equipment (communications interface or modem) Data Terminal

41、Equipment (computers, terminals or printers) Message Sequence Chart Protocol Data Unit PHysical layer PHysical layer Protocol Data Unit PHysical layer Service Data Unit Service Data Unit O BSI 16 July 2002 Page 6 EN 62056-422002 4 Overview From the external point of view, the physical layer provides

42、 the interface between the DTE and the DCE. see Figure 2. Figure 1 shows a typical configuration for data exchange through a wide area network, for example the PSTN. COSEM client COSEM server DTE to DCE ITU-T V series EIA RS232, RS485 Hayes, etc . DCE to DTE ITU-T V series EIA RS232, RS485 Hayes, et

43、c . IEC 235/02 Figure 1 -Typical 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 t

44、he called party; these denominations 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 calle

45、r and called systems take turns 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 vie

46、w the central station normally 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

47、client is also possible, in particular 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 ch

48、aracteristics. However, the following assumptions are made: 0 0 0 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) O BSI 16 July 2002 Page 7 EN 620

49、56-422002 From the internal point of view, the physical layer is the lowest layer in the protocol stack. COSEM client 3 DTE I Data comm. eq u i pm ent WE) Transit network -:11I11-: COSEM server DTE Data comm. equipment WE) Figure 2 -The location of the physical layer This standard defines the services of the physical layer towards its peer layer(s) and the upper layers, and the protocol of the physical layer. 5 Service specification 5.1 List of services ITU-T X.211 defines a set of capabilities to be made available by the physical layer over the physical me