1、BRITISH STANDARD BS EN 60870-6-2:1996 IEC870-6-2: 1995 Telecontrol equipment and systems Part6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations Section2: Use of basic standards (OSIlayers1-4) The European Standard EN60870-6-2:1995 has the status of a British Standard IC
2、S33.200BSEN60870-6-2:1996 This British Standard, having been prepared under the directionof the Electrotechnical Sector Board, was published underthe authority of the Standards Board and comesintoeffect on 15August1996 BSI11-1999 The following BSI references relate to the work on this standard: Comm
3、ittee reference PEL/57 Draft for comment90/25650 DC ISBN 0 580 25636 7 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee PEL/57, Power system control and associated communications, upon which the following bodies were repre
4、sented: Association of Consulting Engineers BEAMA Ltd. BEAMA Metering Association (BMA) EEA (Association of Electronics, Telecommunications and Business Equipment Industries) Electricity Association GAMBICA (BEAMA Ltd.) Transmission and Distribution Association (BEAMA Ltd.) Amendments issued since p
5、ublication Amd. No. Date CommentsBSEN60870-6-2:1996 BSI 11-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN60870-6-2 3 List of references Inside back coverBSEN60870-6-2:1996 ii BSI 11-1999 National foreword This British Standard has been prepa
6、red by Technical Committee PEL/57 and is the English language version of EN60870-6-2:1995 Telecontrol equipment and systems Part6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations Section2: Use of basic standards (OSI layers1-4) published by the European Committee for El
7、ectrotechnical Standardization (CENELEC). It is identical with IEC870-6-2:1995 published by the International Electrotechnical Commission (IEC). Cross-references Publication referred to Corresponding British Standard BS4727 Glossary of electrotechnical power, telecommunication, electronics, lighting
8、, and colour terms Part2 Terms particular to power engineering IEC50(371):1984 Group12:1990 Telecontrol terminology Part3 Terms particular to telecommunications and electronics IEC50(721):1991 Group03:1992 Telegraphy, facsimile and data communication IEC870-1-3:1990 BS7404 Telecontrol equipment and
9、systems Part1 General considerations Section1.3:1991 Glossary ISO2110:1989 BS ISO2110:1989 Information technology. Data communications. 25-pole DTE/DCE interface connector and contact number assignments ISO2382-9:1984 BS ISO2382 Information technology. Vocabulary Part9:1984 Data communication ISO/IE
10、C3309:1993 BS ISO/IEC3309:1993 Information technology. Telecommunications and information exchange between systems. High-level data link control (HDLC) procedures. Frame structure ISO/IEC4335:1993 BS ISO/IEC4335:1993 Information technology. Telecommunications and information exchange between systems
11、. High-level data link control (HDLC) procedures. Elements of procedures ISO4903:1989 BS ISO4903:1989 Information technology. Data communication. 15-pole DTE/DCE interface connector and contact number assignments ISO7776:1986 BS5397 High-level data link control (HDLC) procedures Part7:1990 Specifica
12、tion for X.25 LAPB-compatible DTE data link procedures ISO/IEC7809:1993 BS ISO/IEC7809:1993 Information technology. Telecommunications and information exchange between systems. High-level data link control (HDLC) procedures. Classes of procedures ISO/IEC8072:1994 BS ISO8702:1994 Information technolo
13、gy. Open Systems Interconnection. Transport service definition EN28073:1993 (ISO/IEC8703:1992) BS EN28073:1994 Information technology. Telecommunications and information exchange between systems. Open Systems Interconnection. Protocol for providing the connects-mode transport serviceBSEN60870-6-2:19
14、96 BSI 11-1999 iii 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 not of itself confer immunity from legal obligations. Publication referred t
15、o Corresponding British Standard ISO/IEC8208:1990 BS ISO/IEC8208:1990 Information technology. Datacommunications. X.25 packet layer protocol for data terminal equipment ISO/IEC8348:1993 BS ISO/IEC8348:1993 Information technology. Open systems interconnection. Network service definition ISO8602:1987
16、BS7222:1990 Open systems interconnection: connectionless-mode transport protocol specification ISO8648:1988 BS7221:1989 Open systems interconnection: specification for internal organization of the NetworkLayer ISO8802-2:1989 BS ISO8802 Information technology. Local and metropolitan area networks Par
17、t2:1989 Logical link control ISO/IEC8878:1992 BS ISO/IEC8878:1992 Information technology. Telecommunications and information exchange between systems. Use of X.25 to provide the OSI connection-mode network service BS ISO/IEC8880 Information technology. Telecommunications and information exchange bet
18、ween systems. Protocol combinations to provide and support the OSI Network Service ISO/IEC8880-2:1989 Part2:1989 Provision and support of the connection-mode Network Service ISO/IEC8880-3:1990 Part3:1990 Provision and support of the connectionless-mode Network Service ISO/IEC8886:1992 BS ISO/IEC8886
19、:1992 Information technology. Telecommunications and information exchange between systems. Data link service definition for Open System Interconnection ISO/IEC10022:1990 BS ISO/IEC10022:1990 Information technology. Open system interconnection. Physical service definition ISO/IEC TR10172:1991 BS/ISO
20、TR10172:1991 Information technology. Telecommunications and information exchange between systems. Network Transport Protocol interworking specification Summary of pages This document comprises a front cover, an inside front cover, pagesi toiv, theENtitle page, pages2 to28, an inside back cover and a
21、 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.iv blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORME EN60870-6-2 November1995 ICS33.200 Descriptors: Telecontrol, d
22、ata transmission, transport layer, network layer, data link layer, physical layer, protocol, Open Systems Interconnection, communication, interworking, end system, intermediate system, service English version Telecontrol equipment and systems Part6: Telecontrol protocols compatible with ISO standard
23、s and ITU-T recommendations Section2: Use of basic standards(OSIlayers1-4) (IEC870-6-2:1995) Matriels et systmes de tlconduite Partie6:Protocoles de tlconduite compatibles avec les normes ISO et les recommendations deIUIT-T Section2: Utilisation des normes de base (couches OSI1 4) (CEI870-6-2:1995)
24、Ferneinwirkungen und -systeme Teil6:Fernwirkprotokolle, die mit ISO-Normen und ITU-T-Empfehlungen kompatibel sind Hauptabschnitt2: Anwendungen der Grundnormen (OSI-Schichten1 bis4) (IEC870-6-2:1995) This European Standard was approved by CENELEC on1995-09-20. CENELEC members are bound to comply with
25、 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 standards may be obtained on application to the Central Secretaria
26、t 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 notified to the Central Secretariat has the same status as the of
27、ficial versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechn
28、ical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1995 Copyright reserved to CENELEC members Ref. No. EN60870-6-2:1995 EEN60870-6-2:1995 BSI 11-1999 2 Foreword The text of doc
29、ument57/201/DIS, future edition1 of IEC870-6-2, prepared by IEC TC57, Power system control and associated communications, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN60870-6-2 on1995-09-20. The following dates were fixed: Annexes designated “normative” are part of
30、 the body of the standard. Annexes designated “informative” are given for information only. In this standard, Annex A, Annex B and Annex ZA are normative and Annex C is informative. Annex ZA has been added by CENELEC. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Defin
31、itions 5 4 Abbreviations 8 5 Transport layer 8 5.1 General presentation of the transport layer 8 5.2 The transport service 9 5.3 The transport protocol 9 6 Network layer 10 6.1 Presentation of the network layer 10 6.2 The network service 11 6.3 The network protocol 12 7 Sub-networks 13 7.1 Packet sw
32、itched network 14 7.2 Circuit switched network 18 Annex A (normative) Transport protocol Elements of procedure 24 Annex B (normative) Transport protocol Protocol classes 24 Annex C (informative) Bibliography 25 Annex ZA (normative) Normative references to international publications with their corres
33、ponding European publications 25 Figure 1 Scenario description of a packet switched data network 15 Figure 2 Model description of a packet switched data network 16 Figure 3 Scenario description of a circuit switched data network 18 Figure 4 Model description of a circuit switched data network 19 Fig
34、ure 5 Scenario description of a switched telephone network 21 Figure 6 Model description of a switched telephone network 21 latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop)1996-07-01 latest date by which the
35、national standards conflicting with the EN have to be withdrawn (dow)1996-07-01EN60870-6-2:1995 BSI 11-1999 3 Introduction IEC870: “Telecontrol equipment and systems” is composed of six parts, of which part6 is concerned with “telecontrol protocols compatible with ISO standards and ITU-T recommendat
36、ions”. The aim of part6 is the standardization of functional profiles for electric power systems. These FPs are to provide the means for specifying complete, coherent, working systems for end-to-end communication and interworking. IEC870-6-1 establishes the overall context of part6, describing exact
37、ly what part6 is to contain, what form it will take, and to what it applies. Thisincludes document structure, scope, requirements, generic communication network solutions, and the form in which the standard will be developed. It is an essential prerequisite for the sections which follow. 1 Scope Thi
38、s section of IEC870-6 considers the standards related to layers1-4 of the OSI reference model. Itsobjectives are as follows: to describe the role and the functions carried out by each layer; to list the relevant ISO basic standards; to give general considerations and recommendations for the use of t
39、he standards in the application context of part6. The use of these standards in their application to end systems (ES) and intermediate systems (IS) is described. An ES is one which contains all seven layers of the OSI reference model as well as an application process. An IS is a communication relay
40、between sub-networks. ESs and ISs are considered in IEC870-1-4 and IEC870-6-1. The description of the functions carried out by each layer is intended to be fairly complete but makes no claim to being exhaustive. For more details, the relevant sections of ISO7498 should be consulted as well as the li
41、sted ISO basic standards. Second, the ISO standards listed are the fundamental ones related to each layer; again, the list does not claim to be exhaustive. Finally, the general considerations and recommendations are intended to present the basic issues involved in the application of the standards an
42、d to lay down the fundamental manner in which they are to be used. The purpose is to codify the ground rules for making the specific comprehensive and detailed choices necessary for the definition of the functional profiles which are the subject of part6-5 and subsequent parts. This section is organ
43、ized according to the OSI layers. Because there is a strong interdependence in the choice of protocols in the three lowest layers, these layers are grouped into clauses of this section. Within these clauses, the organization is according to the type of transmission network. The treatment of each lay
44、er contains the following elements: introduction: briefly describing the layers function and role in the overall communication process; reference documents; services; list of services and QOS parameters included in the standards; guidelines and recommendations concerning the choice and use of these
45、services; protocols; list of protocol classes, subsets, etc. included in the relevant standards; guidelines and recommendations concerning the choice and use of these protocols. 2 Normative references The following normative documents contain provisions which, through reference in this text, constit
46、ute provisions of this section of IEC870-6. Atthe time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this section of IEC870-6 are encouraged to investigate the possibility of applying the most recent editions of
47、 the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC50(371):1984, International Electrotechnical Vocabulary (IEV) Chapter371: Telecontrol. IEC50(721):1991, International Electrotechnical Vocabulary (IEV) Chapter721: Teleg
48、raphy, facsimile and data communication. IEC870-1-3:1990, Telecontrol equipment and systems Part1: General considerations Section3: Glossary. IEC870-6-1:1994, Telecontrol equipment and systems Part6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations Section1: Application
49、context and organization of standards. ISO2110:1989, Information technology Data communication 25-pole DTE/DCE interface connector and contact number assignments. EN60870-6-2:1995 4 BSI 11-1999 ISO2382-9:1984, Data processing Vocabulary Part09: Data communication. ISO/IEC3309:1993, Information technology Telecommunications and information exchange between systems High-level data link control (HDLC) procedures Frame structure. ISO/IEC4335:1993, Information technology Telecommunications a
