1、BRITISH STANDARD BS EN 61334-4-42: 1997 IEC 61334-4-42: 1996 Distribution automation using distribution line carrier system Part 4: Data communication protocols Section 42: Application protocols Application layer The European Standard EN61334-4-42:1997 has the status of a British Standard ICS 35.100
2、.70BSEN61334-4-42:1997 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comesintoeffect on 15November1997 BSI 04-2000 ISBN 0 580 28700 9 National foreword This British Standard is the Engl
3、ish language version of EN61334-4-42:1997. It is identical with IEC61334-4-42:1996. The UK participation in its preparation was entrusted to Technical Committee PEL/57, Power system control and associated communications, which has the responsibility to: aid enquirers to understand the text; present
4、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 developments and promulgate them in the UK. A list of organizations represented on this committee can be ob
5、tained on request to its secretary. From 1January1997, all IEC publications have the number60000 added to the old number. For instance, IEC27-1 has been renumbered as IEC60027-1. For a period of time during the change over from one numbering system to the other, publications may contain identifiers
6、from both systems. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement these international or Euro
7、pean publications may be found in the BSI Standards 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 contrac
8、t. Users of British Standards are responsible 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, pages i and ii, theEN title page, pages 2 to 36, a
9、n inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSEN61334-4-42:1997 BSI 04-2000 i Con
10、tents Page National foreword Inside front cover Foreword 2 Text of EN 61334-4-42 5ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61334-4-42 December 1996 ICS 35.100.70 Descriptors: Electric power, distribution automation, line carrier systems, data communication protocols, application
11、protocols, application layer English version Distribution automation using distribution line carrier systems Part 4: Data communication protocols Section 42: Application protocols Application layer (IEC 1334-4-42:1996) Automatisation de la distribution laidedesystmes de communication courants porteu
12、rs Partie4:Protocolesdecommunication dedonnes Section 42: Protocoles dapplication Coucheapplication (CEI 1334-4-42:1996) Verteilungsautomatisierung mit Hilfe vonTrgersystemen auf Verteilungsleitungen Teil 4: Datenkommunikationsprotokolle Hauptabschnitt 42: Anwendungsprotokolle Anwendungsschicht (IEC
13、 1334-4-42:1996) This European Standard was approved by CENELEC on1996-10-01. 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
14、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 by translation under the responsi
15、bility 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, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Net
16、herlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. 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 1996 Co
17、pyright reserved to CENELEC members Ref. No. EN 61334-4-42:1996 EEN61334-4-42:1996 BSI 04-2000 2 Foreword The text of document 57/265/FDIS, future edition1 of IEC1334-4-42, prepared by IEC TC57, Power system control and associated communications, was submitted to the IEC-CENELEC parallel vote and wa
18、s approved by CENELEC as EN61334-4-42 on1996-10-01. The following dates were fixed: Annexes designated “normative” are part of the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex A andAnnex ZA are normative andAnnex B is informative. Ann
19、ex ZA has been added by CENELEC. Endorsement notice The text of the International Standard IEC1334-4-42:1996 was approved by CENELEC as a European Standard without any modification. latest date by which the EN has to be implemented at national level by publication of an identical national standard o
20、r by endorsement (dop) 1997-07-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 1997-07-01EN61334-4-42:1996 BSI 04-2000 3 Contents Page Foreword 2 Introduction 5 1 Scope 5 2 Normative references 5 3 Definitions 6 3.1 Reference model definitions 6 3.2
21、Naming and addressing definitions 6 3.3 Service conventions definitions 6 3.4 Application layer specific definitions 6 4 Abbreviations 8 5 Application layer concepts 8 5.1 Introduction 8 5.2 Application processes 8 5.3 Application entities 9 5.4 Application service elements 9 5.5 Application-associa
22、tions 9 5.6 Application context 9 5.7 Single association object 10 5.8 Single association control function 10 5.9 Names and directory functions 10 5.10 Use of application-association 11 5.11 Use of the data link services 11 5.12 Application service element standards 11 5.13 Abstract syntax definitio
23、n 11 5.14 Encoding rules 12 5.15 DCP restrictions 12 5.16 Registration requirements 12 6 Association control service element (ACSE) 12 6.1 ACSE specific definitions 12 6.2 Basic concepts 13 6.3 Relationship with other ASEs 13 6.4 Connectionless-mode ACSE service 13 6.5 Connectionless-mode ACSE proto
24、col 15 7 DLMS application entity 16 7.1 Overview 16 7.2 General structure 17 7.3 Client-DLMS ASE 20 7.4 Server-DLMS ASE 20 8 Elements of protocol procedure 21 8.1 Descriptive convention 21 8.2 Mapping to ACSE and data link services 21 8.3 Entering and leaving the DLMS environment 22 Page 8.4 Operati
25、ng in the DLMS environment 28 Annex A (normative) Default application context 35 Annex B (informative) Bibliography 36 Annex ZA (normative) Normative references to international publications with their corresponding European publications Inside back cover Figure 1 Application process structure 18 Ta
26、ble 1 The A_Unit_Data service 14 Table 2 Server context management state table 24 Table 3 Client context management state table 25 Table 4 Server confirmed service state table 29 Table 5 Client confirmed service state table 30 Table 6 Server unconfirmed service state table 31 Table 7 Client unconfir
27、med service state table 31 Table 8 Server unsolicited service state table 32 Table 9 Client unsolicited service state table 324 blankEN61334-4-42:1996 BSI 04-2000 5 Introduction The application layer supports the DLMS application specification and the management application of each station. DCP make
28、s use of the connectionless ACSE ISO standards and of the application service elements DLMS and management. 1 Scope The specifications of the sections of IEC1334-4 apply to the communication through the so-called distribution line carrier technology (DLC) on both low and medium voltage distribution
29、networks. The application range based on telecommunication processes is wide and cannot be described exhaustively in this section; application examples are: control and monitoring of the distribution network, order broadcast, control of user interfaces, public lighting, traffic lights supervision, a
30、utomatic meter reading, etc. This section of IEC1334-4 describes the rules used to design an application service element, the ISO connectionless ACSE, and the DLMS Application Service Element. Extensions to other communication media are also allowed. The mapping of the DLMS services is based on the
31、three-layer stack. Future extensions to stacks of more than three layers are possible and may use the rules described in this section. In such a case, the DLMS interface with the underlying layers should be remapped to the new one: the specification of the mapping criteria will be dealt with in corr
32、esponding appendices, in respect of the rules defined in this section. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this section of IEC1334-4. At the time of publication, the editions indicated were valid.
33、 Allnormative documents are subject to revision, and parties to agreements based on this section of IEC1334-4 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid In
34、ternational Standards. IEC 1334-4-1:1996, Distribution automation using distribution line carrier systems Part 4: Data communication protocols Section 1: Reference model of the communication system. IEC 1334-4-32:1996, Distribution automation using distribution line carrier systems Part 4: Data comm
35、unication protocols Section 32: Data link layer Logical link control (LLC). IEC 1334-4-41:1996, Distribution automation using distribution line carrier systems Part 4: Data communication protocols Section 41: Application protocols Distribution line message specification. ISO 7498:1984, Information p
36、rocessing systems Open Systems Interconnection Basic Reference Model. ISO 7498-3:1989, Information processing systems Open Systems Interconnection Basic Reference Model Part 3: Naming and Addressing. ISO/TR 8509:1987, Information processing systems Open Systems Interconnection Services conventions.
37、ISO 8649:1988, Information processing systems Open Systems Interconnection Service definition for the Association Control Service Element. Amendment 2 (1991): Connectionless-mode ACSE service ISO/IEC 8824:1990, Information technology Open Systems Interconnection Specification of Abstract Syntax Nota
38、tion One (ASN.1). ISO/IEC 8825:1990, Information technology Open Systems Interconnection Specification of Basic Encoding Rules for Abstract Syntax Notation One (ASN.1). ISO/IEC 9545:1994, Information technology Open Systems Interconnection Application layer structure. EN61334-4-42:1996 6 BSI 04-2000
39、 3 Definitions For the purposes of this International Standard, the following definitions apply: 3.1 Reference model definitions This section is based on the concepts developed in ISO7498 and makes use of the following terms defined in it: a) application layer; b) application process; c) application
40、 entity; d) (N) function; e) (N) layer; f) (N) protocol; g) (N) protocol-control-information; h) (N) protocol-data-unit; i) real open system. 3.2 Naming and addressing definitions This section makes use of the following terms: a) application-process title; b) application-entity qualifier; c) applica
41、tion-entity title; d) application-process invocation-identifier; e) application-entity invocation-identifier. 3.3 Service conventions definitions This section makes use of the following terms defined in ISO/TR8509: a) service-provider; b) service-user; c) confirmed service; d) non-confirmed service;
42、 e) provider-initiated service; f) primitive; g) request (primitive); h) indication (primitive); i) response (primitive); j) confirm (primitive). 3.4 Application layer specific definitions 3.4.1 application-association, association a co-operative relationship between two applications-entities, forme
43、d by their exchange of application-protocol-control-information through their use of data link services. The relationship enables the communication of information and the co-ordination of their joint operation for an instance of communication 3.4.2 application context an explicitly identified set of
44、 application-service-elements, related options and rules shared in common by two application entity-invocations that are necessary for the interworking of application-entities in an application-associationEN61334-4-42:1996 BSI 04-2000 7 3.4.3 application-directory-function an application-function th
45、at processes data link addresses, application-entity-titles, and application-protocol-addressing-information to provide mapping among these categories of information 3.4.4 application-entity-invocation a specific use of part or all of the capabilities of a given application-entity in support of the
46、communications requirements of an application-process-invocation 3.4.5 application-entity-type a specific set (called type) of application-entity functions that share common characteristics. Such a type may be referenced with a name 3.4.6 application-function an identifiable stand alone part of the
47、activity of application-entities 3.4.7 application-process-invocation a specific utilization of part or all of the capabilities of a given application-process in support of a specific occasion of information processing 3.4.8 application-process-type a specific set (called type) of application-proces
48、s functions that share common characteristics. Such a type may be referenced with a name 3.4.9 application-protocol a set of rules and formats (semantic and syntactic) which determines the communication behaviour of application-entities in the performance of application-functions 3.4.10 application-
49、protocol-addressing-information those elements of the application-protocol-control-information which contain addressing information 3.4.11 application-protocol-control-information the information exchanged between application-entities using data link services, to co-ordinate their joint operation. This information is contained in application-protocol-data-unit 3.4.12 application-protocol-data-unit a unit of information, specified in an application-protocol, that consists of
