1、BRITISH STANDARD BS EN 62056-46:2002 Incorporating amendment no. 1 Electricity metering Data exchange for meter reading, tariff and load control Part 46: Data link layer using HDLC protocol The European Standard EN 62056-46:2002, incorporating amendment A1:2007, has the status of a British Standard
2、ICS 91.140.50; 35.100.20 BS EN 62056-46:2002 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 17 July 2002 BSI 2007 ISBN 978 0 580 59364 2 National foreword This British Standard is the UK implementation of EN 62056-46:2002, incorporating amen
3、dment A1:2007. It is identical with IEC 62056-46:2002, incorporating amendment 1:2006. The start and finish of text introduced or altered by IEC amendment is indicated in the text by tags !“. Tags indicating changes to IEC text carry the number of the IEC amendment. For example, text altered by IEC
4、amendment 1 is indicated by !“. The UK participation in its preparation was entrusted to Technical Committee PEL/13, Electricity meters. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary p
5、rovisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. Date Comments 17133 29 June 2007 See national forewordEUROPEAN STANDARD EN 62056-46 NORME EUROPEN
6、NE 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 - 1050 Brussels 2002 CENELEC - All rights of exploitation in any fo
7、rm and by any means reserved worldwide for CENELEC members. Ref. No. EN 62056-46:2002 E ICS 91.140.50; 35.100.20 English version Electricity metering - Data exchange for meter reading, tariff and load control Part 46: Data link layer using HDLC protocol (IEC 62056-46:2002) Equipements de mesure de l
8、nergie lectrique - Echange des donnes pour la lecture des compteurs, le contrle des tarifs et de la charge Partie 46: Couche liaison utilisant le protocole HDLC (CEI 62056-46:2002) Messung der elektrischen Energie - Zhlerstandsbertragung, Tarif- und Laststeuerung Teil 46: Anwendung des HDLC-Protokol
9、ls in der Verbindungsschicht (IEC 62056-46:2002) This European Standard was approved by 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
10、alteration. Up-to-date lists and bibliographical references 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
11、by translation under the responsibility of a CENELEC member into its own language and 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,
12、 Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United Kingdom. +A1 April 2007NE 260-6546:2002 -2 - Foreword The text of document 13/1267/FDIS, future edition 1 of IEC 62056-46, prepared by IEC TC 13, Equipment for
13、 electrical energy measurement and load control, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 62056-46 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 standa
14、rd or by endorsement (dop) 2003-01-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2005-05-01 The International Electrotechnical Commission (IEC) and CENELEC draw attention to the fact that it is claimed that compliance with this International Standa
15、rd / European Standard may involve the use of a maintenance service concerning the stack of protocols on which the present standard IEC 62056-46 / EN 62056-46 is based. The IEC and CENELEC take no position concerning the evidence, validity and scope of this maintenance service. The provider of the m
16、aintenance service 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 may be ob
17、tained from: DLMS 1)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, annex ZA is normative and annexes A, B and C are informative. Annex ZA has bee
18、n added by CENELEC. _ Endorsement notice The text of the International Standard IEC 62056-46:2002 was approved by CENELEC as a European Standard without any modification. _1)Device Language Message Specification Page2 EN6205646:2002 Foreword to amendment A1 The text of document 13/1376/FDIS, future
19、amendment 1 to IEC 62056-46:2002, prepared by IEC TC 13, Electrical energy measurement, tariff- and load control, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A1 to EN 62056-46:2002 on 2007-02-01. The following dates were fixed: latest date by which the ame
20、ndment has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2007-11-01 latest date by which the national standards conflicting with the amendment have to be withdrawn (dow ) 2010-02-01 Annex ZA has been added by CENELEC. _ Endorsement notic
21、e The text of amendment 1:2006 to the International Standard IEC 62056-46:2002 was approved by CENELEC as an amendment to the European Standard without any modification. _ BSI 2007260-6546 CEI:0220(E) 3 CONTENTS 1 Scope 5 2 Normative references .5 3 Terms, definitions and abbreviations 6 4 Overview
22、7 4.1 The LLC sub-layer.7 4.2 The MAC sub-layer7 4.3 Specification method .7 5 The LLC sub-layer 8 5.1 The role of the LLC sub-layer 8 5.2 Service specification for the LLC sub-layer8 5.2.1 Setting up the Data Link Connection9 5.2.2 Disconnecting the Data Link Connection12 5.2.3 Data communication15
23、 5.3 Protocol specification for the LLC sub-layer.18 5.3.1 Overview .18 5.3.2 LLC protocol data unit (LPDU) structure 18 5.3.3 State transition tables for the LLC sub-layer 18 6 The MAC sub-layer 19 6.1 HDLC selections20 6.2 Service specification for the MAC sub-layer.20 6.2.1 Setting up the MAC con
24、nection20 6.2.2 Disconnecting the MAC connection23 6.2.3 Data communication27 6.3 Physical layer services used by the MAC sub-layer .29 6.3.1 Overview .29 6.3.2 Setting up a physical link.29 6.3.3 Disconnecting the physical link30 6.3.4 Data communication30 6.4 Protocol specification for the MAC sub
25、-layer .30 6.4.1 The MAC PDU and the HDLC frame 30 6.4.2 MAC addressing 32 6.4.3 Command and response frames 36 6.4.4 Elements of the procedures .39 6.4.5 State transition diagram for the server MAC sub-layer .53 Annex A (informative) FCS calculation.54 Annex B (informative) Data model and protocol
26、.57 Annex C (informative) Data link layer management services 58 Annex ZA (normative) Normative references to international publications with their corresponding European publications .64 Page3 EN6205646:2002 BSI 2007 4 620-6546 CEI:0220(E) Figure 1 Data Link (LLC) services for setting up the Data L
27、ink Connection 9 Figure 2 Data Link (LLC) services for disconnecting the Data Link Connection 12 Figure 3 Data link layer data communication services 15 Figure 4 The ISO/IEC 8802-2 LLC protocol data unit format.18 Figure 5 The used LLC protocol data unit format18 Figure 6 MAC sub-layer services for
28、setting up the MAC (DL) connection at the client and server sides 21 Figure 7 MAC sub-layer services for disconnecting the MAC (DL) connection at the client and server sides 24 Figure 8 MAC sub-layer data communication services .27 Figure 9 Physical layer services used by the MAC sub-layer29 Figure
29、10 MAC sub-layer frame format (HDLC frame format type 3).31 Figure 11 Multiple frames.31 Figure 12 The frame format field31 Figure 13 MSC for long MSDU transfer in a transparent manner 47 Figure 14 Example configuration to illustrate broadcasting.48 Figure 15 Sending out a pending UI frame with a .r
30、esponse data.49 Figure 16 Sending out a pending UI frame with a response to a RR frame.50 Figure 17 Sending out a pending UI frame on receipt of an empty UI frame .50 Figure 18 State transition diagram for the server MAC sub-layer53 Figure B.1 The three-step approach of COSEM .57 Figure C.1 Layer ma
31、nagement services .58 Table 1 State transition table of the client side LLC sub-layer 19 Table 2 State transition table of the server side LLC sub-layer.19 Table 3 Table of reserved client addresses34 Table 4 Table of reserved server addresses.34 Table 5 Handling inopportune address lengths.36 Table
32、 6 Command and response frames 36 Table 7 Control field format37 Table 8 Example for parameter negotiation values with the SNRM/UA frames .44 Table 9 Summary of MAC Addresses for the example48 Table 10 Broadcast UI frame handling .48 Page4 EN6205646:2002 BSI 2007260-6546 CEI:0220(E) 5 ELECTRICITY ME
33、TERING DATA EXCHANGE FOR METER READING, TARIFF AND LOAD CONTROL Part 46: Data link layer using HDLC protocol 1 Scope This part of IEC 62056 specifies the data link layer for connection-oriented, HDLC-based, asynchronous communication profile. In order to ensure a coherent data link layer service spe
34、cification for both connection-oriented and connectionless operation modes, the data link layer is divided into two sub-layers: the Logical Link Control (LLC) sub-layer and the Medium Access Control (MAC) sub-layer. This specification supports the following communication environments: point-to-point
35、 and point-to-multipoint configurations; dedicated and switched data transmission facilities; half-duplex and full-duplex connections; asynchronous start/stop transmission, with 1 start bit, 8 data bits, no parity, 1 stop bit. Two special procedures are also defined: transferring of separately recei
36、ved Service User layer PDU parts from the server to the client in a transparent manner. The server side Service user layer can give its PDU to the data link layer in fragments and the data link layer can hide this fragmentation from the client; event reporting, by sending UI frames from the secondar
37、y station to the primary station. 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 application of this document. For dated references, only the edition cited a
38、pplies. 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 instruments Part 311: General terms relating to measure- ments Part 312
39、: General terms relating to electrical measurements Part 313: Types of electrical measuring instruments Part 314: Specific terms according to the type of instru- ment IEC/TR 62051:1999, Electricity metering Glossary of terms IEC 62056-42, Electricity metering Data exchange for meter reading, tariff
40、and load control Part 42: Physical layer services and procedures for connection oriented asynchronous data exchange 1) _ 1)To be published. Page5 EN6205646:2002 IEC 62051-1:2004, Electricity metering Data exchange for meter reading, tariff and load control Glossary of Terms Part 1, Terms related to
41、data exchange with metering equipment using DLMS/COSEM ! “ BSI 2007ISO/IEC 8802-2:1998, Information technology Telecommunications and information exchange between systems Local and metropolitan area networks Specific requirements Part 2: Logical link control 3 Terms, definitions and abbreviations 3.
42、1 Terms and definitions 3.2 Abbreviations APDU Application layer Protocol Data Unit COSEM COmpanion Specification for Energy Metering DISC DISConnect (an HDLC frame type) DL Data Link DM Disconnected Mode (an HDLC frame type) DPDU Data link Protocol Data Unit DSAP Data link Service Access Point DSDU
43、 Data link Service Data Unit FCS Frame Check Sequence FRMR FRaMe Reject (an HDLC frame type) HCS Header Check Sequence HDLC High-level Data Link Control I Information (an HDLC frame type) LLC Logical Link Control (Sub-layer) LSAP LLC sub-layer Service Access Point LPDU LLC Protocol Data Unit LSB Lea
44、st Significant Bit LSDU LLC Service Data Unit MAC Medium Access Control (sub-layer) MSAP MAC sub-layer Service Access Point (here it is equal to the HDLC address) MSB Most Significant Bit MSDU MAC Service Data Unit NDM Normal Disconnected Mode Page6 EN6205646:2002 IEC 62056-53:2006, Electricity mete
45、ring Data exchange for meter reading, tariff and load control Part 53: COSEM Application layer IEC 62056-61:2006, Electricity metering Data exchange for meter reading, tariff and load control Part 61: OBIS Object identification system IEC 62056-62:2006, Electricity metering Data exchange for meter r
46、eading, tariff and load control Part 62: Interface classes ISO/IEC 13239:2002, Information technology Telecommunications and information exchange between systems High-level data link control (HDLC) procedures ! ! “ “ For the purposes of this document, the definitions given in IEC 60050-300, IEC 6205
47、1 and IEC 62051-1 apply. ! “ BSI 2007260-6546 CEI:0220(E) 7 NRM Normal Response Mode N(R) Receive sequence Number N(S) Send sequence Number P/F Poll/Final bit PDU Protocol Data Unit PH Physical layer PSDU Physical layer Service Data Unit RNR Receive Not Ready (an HDLC frame type) RR Receive Ready (a
48、n HDLC frame type) SAP Service Access Point SDU Service Data Unit SNRM Set Normal Response Mode (an HDLC frame type) TWA Two Way Alternate UA Unnumbered Acknowledgement (an HDLC frame type) UI Unnumbered Information (an HDLC frame type) UNC Unbalanced operation Normal response mode Class USS Unnumbered Send Status V(R) Receive state Variable V(S) Send state Variable 4 Overview 4.1 The LLC sub-layer In the connection-oriented profile the only role of the LLC sub-layer is to ensure consistent Data Link addressing. It can be considered that the LLC sub-layer, defined
