1、Industrial communication networks Fieldbus specifications Part 3-7: Data-link layer service definition Type 7 elementsBS EN 61158-3-7:2008raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI British StandardsLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA
2、STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSINational forewordThis British Standard is the UK implementation of EN 61158-3-7:2008. It isidentical to IEC 61158-3-7:2007. Together with all of the other sections of BS EN 61158-3, it supersedes BS EN 61158-3:2004 which is withdrawn.The UK part
3、icipation in its preparation was entrusted to Technical CommitteeAMT/7, Industrial communications: process measurement and control, includ-ing fieldbus.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all th
4、e necessary provisions of acontract. Users are responsible for its correct application. BSI 2009ISBN 978 0 580 61564 1ICS 25.040.40; 35.100.20; 35.240.50Compliance with a British Standard cannot confer immunity fromlegal obligations.Amendments issued since publicationAmd. No. Date Text affectedBRITI
5、SH STANDARDBS EN EN 61158-3-7:2008This British Standard was published under the authority of the StandardsPolicy and Strategy Committee on 31 January 2009. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSIEUROPEAN STANDARD EN 61158-3-7 NORME EUROPENN
6、E EUROPISCHE NORM February 2008 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 2008 CENELEC - All rights of exploitation in any
7、 form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61158-3-7:2008 E ICS 35.100.20; 25.040.40 Partially supersedes EN 61158-3:2004 English version Industrial communication networks - Fieldbus specifications - Part 3-7: Data-link layer service definition - Type 7 elements (IEC
8、61158-3-7:2007) Rseaux de communication industriels - Spcifications des bus de terrain - Partie 3-7: Dfinition des services des couches de liaison de donnes - Elments de type 7 (CEI 61158-3-7:2007) Industrielle Kommunikationsnetze - Feldbusse - Teil 3-7: Dienstfestlegungen des Data Link Layer (Siche
9、rungsschicht) - Typ 7-Elemente (IEC 61158-3-7:2007) This European Standard was approved by CENELEC on 2008-02-01. 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 a
10、ny 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 ma
11、de 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, Bulgaria, Cyprus, the Czech Republic, Denmark,
12、Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 61158-3-7:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHIN
13、A STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSIEN 61158-3-7:2008 - 2 - Foreword The text of document 65C/473/FDIS, future edition 1 of IEC 61158-3-7, prepared by SC 65C, Industrial networks, of IEC TC 65, Industrial-process measurement, control and automation, was submitted to the IEC-CENE
14、LEC parallel vote and was approved by CENELEC as EN 61158-3-7 on 2008-02-01. This and the other parts of the EN 61158-3 series supersede EN 61158-3:2004. With respect to EN 61158-3:2004 the following changes were made: deletion of Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link
15、layer, for lack of market relevance; addition of new fieldbus types; partition into multiple parts numbered 3-1, 3-2, , 3-19. 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) 2
16、008-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-02-01 NOTE Use of some of the associated protocol types is restricted by their intellectual-property-right holders. In all cases, the commitment to limited release of intellectual-property-r
17、ights made by the holders of those rights permits a particular data-link layer protocol type to be used with physical layer and application layer protocols in type combinations as specified explicitly in the EN 61784 series. Use of the various protocol types in other combinations may require permiss
18、ion from their respective intellectual-property-right holders. Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61158-3-7:2007 was approved by CENELEC as a European Standard without any modification. In the official version, for Bibliography, the fo
19、llowing notes have to be added for the standards indicated: IEC 61158-2 NOTE Harmonized as EN 61158-2:2008 (not modified). IEC 61158-4-7 NOTE Harmonized as EN 61158-4-7:2008 (not modified). IEC 61158-5-7 NOTE Harmonized as EN 61158-5-7:2008 (not modified). IEC 61158-6-7 NOTE Harmonized as EN 61158-6
20、-7:2008 (not modified). IEC 61784-1 NOTE Harmonized as EN 61784-1:2008 (not modified). _ BS EN 61158-3-7:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSI- 3 - EN 61158-3-7:2008 Annex ZA (normative) Normative references to international publicati
21、ons with their corresponding European publications 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 document (including any amendments) applies
22、. NOTE When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. Publication Year Title EN/HD Year ISO/IEC 7498-1 -1)Information technology - Open Systems Interconnection - Basic Reference Model: The Basic Model EN ISO/IEC 7498-1 199
23、52)ISO/IEC 7498-3 -1)Information technology - Open Systems Interconnection - Basic Reference Model: Naming and addressing - - ISO/IEC 10731 -1)Information technology - Open Systems Interconnection - Basic Reference Model - Conventions for the definition of OSI services- - 1)Undated reference. 2)Vali
24、d edition at date of issue. BS EN 61158-3-7:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSI 2 61158-3-7 IEC:2007(E) CONTENTS INTRODUCTION.6 1 Scope.7 1.1 Overview .7 1.2 Specifications 7 1.3 Conformance.7 2 Normative references8 3 Terms, defini
25、tions, symbols, abbreviations and conventions 8 3.1 Reference model terms and definitions 8 3.2 Service convention terms and definitions .9 3.3 Data-link service terms and definitions.9 3.4 Symbols and abbreviations 13 3.5 Common conventions 14 4 Data-link layer services and concepts .16 4.1 Field o
26、f application, object .16 4.2 General description of services16 4.3 Sequences of primitives.21 4.4 Buffer writing .22 4.5 Buffer reading24 4.6 Buffer transfer .25 4.7 Explicit request for buffer transfer 26 4.8 Unacknowledged message transfer30 4.9 Acknowledged message transfer32 Bibliography35 Figu
27、re 1 Relationships of DLSAPs, DLSAP-addresses and group DL-addresses .11 Figure 2 General description of medium allocation20 Figure 3 Primitives associated with the buffer writing service 23 Figure 4 Primitives associated with the buffer reading service.24 Figure 5 Primitives associated with the buf
28、fer transfer service 25 Figure 6 Primitives associated with the specified explicit request for a buffer transfer28 Figure 7 Primitives associated with the free explicit request for a buffer transfer .29 Figure 8 Primitives associated with the unacknowledged message transfer request service 31 Figure
29、 9 Primitives associated with the acknowledged message transfer request service 33 Table 1 Summary of DL-services and primitives for buffer transfers 22 Table 2 Summary of DL-services and primitives for message exchanges 22 Table 3 DL-Put primitives and parameters 23 Table 4 DL-Get primitives and pa
30、rameters24 Table 5 DL-Buffer-Sent primitive and parameter .26 Table 6 DL-Buffer-Received primitive and parameter 26 Table 7 DL-Spec-Update primitives and parameters .28 Table 8 DL-Free-Update primitives and parameters 30 BS EN 61158-3-7:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/0
31、5/2009 02:19, Uncontrolled Copy, (c) BSI61158-3-7 IEC:2007(E) 3 Table 9 DL-Message primitives and parameters .31 Table 10 DL-Message-Ack primitives and parameters.33 BS EN 61158-3-7:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSI 6 61158-3-7 IE
32、C:2007(E) INTRODUCTION This part of IEC 61158 is one of a series produced to facilitate the interconnection of automation system components. It is related to other standards in the set as defined by the “three-layer” fieldbus reference model described in IEC/TR 61158-1. Throughout the set of fieldbu
33、s standards, the term “service” refers to the abstract capability provided by one layer of the OSI Basic Reference Model to the layer immediately above. Thus, the data-link layer service defined in this standard is a conceptual architectural service, independent of administrative and implementation
34、divisions. BS EN 61158-3-7:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSI61158-3-7 IEC:2007(E) 7 INDUSTRIAL COMMUNICATION NETWORKS FIELDBUS SPECIFICATIONS Part 3-7: Data-link layer service definition Type 7 elements 1 Scope 1.1 Overview This p
35、art of IEC 61158 provides common elements for basic time-critical messaging communications between devices in an automation environment. The term “time-critical” is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defi
36、ned level of certainty. Failure to complete specified actions within the time window risks failure of the applications requesting the actions, with attendant risk to equipment, plant and possibly human life. This standard defines in an abstract way the externally visible service provided by the Type
37、 7 fieldbus data-link layer in terms of a) the primitive actions and events of the service; b) the parameters associated with each primitive action and event, and the form which they take; and c) the interrelationship between these actions and events, and their valid sequences. The purpose of this s
38、tandard is to define the services provided to the Type 7 fieldbus application layer at the boundary between the application and data-link layers of the fieldbus reference model, and systems management at the boundary between the data-link layer and systems management of the fieldbus reference model.
39、 1.2 Specifications The principal objective of this standard is to specify the characteristics of conceptual data-link layer services suitable for time-critical communications, and thus supplement the OSI Basic Reference Model in guiding the development of data-link protocols for time-critical commu
40、nications. A secondary objective is to provide migration paths from previously-existing industrial communications protocols. This specification may be used as the basis for formal DL-Programming-Interfaces. Nevertheless, it is not a formal programming interface, and any such interface will need to a
41、ddress implementation issues not covered by this specification, including a) the sizes and octet ordering of various multi-octet service parameters, and b) the correlation of paired request and confirm, or indication and response, primitives. 1.3 Conformance This standard does not specify individual
42、 implementations or products, nor does it constrain the implementations of data-link entities within industrial automation systems. There is no conformance of equipment to this data-link layer service definition standard. Instead, conformance is achieved through implementation of the corresponding d
43、ata-link protocol that fulfills the Type 7 data-link layer services defined in this standard. BS EN 61158-3-7:2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSI 8 61158-3-7 IEC:2007(E) 2 Normative references The following referenced documents are
44、indispensable for the application 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. ISO/IEC 7498-1, Information technology Open Systems Interconnection Basic Reference Mode
45、l: The Basic Model ISO/IEC 7498-3, Information technology Open Systems Interconnection Basic Reference Model: Naming and addressing ISO/IEC 10731, Information technology Open Systems Interconnection Basic Reference Model Conventions for the definition of OSI services 3 Terms, definitions, symbols, a
46、bbreviations and conventions For the purposes of this document, the following terms, definitions, symbols, abbreviations and conventions apply. 3.1 Reference model terms and definitions This standard is based in part on the concepts developed in ISO/IEC 7498-1 and ISO/IEC 7498-3, and makes use of th
47、e following terms defined therein: 3.1.1 DL-address 7498-33.1.2 DL-connection 7498-13.1.3 DL-connection-end-point 7498-13.1.4 DL-connection-end-point-identifier 7498-13.1.5 correspondent (N)-entities correspondent DL-entities (N=2) correspondent Ph-entities (N=1) 7498-13.1.6 (N)-entity DL-entity (N=
48、2) Ph-entity (N=1) 7498-13.1.7 flow control 7498-13.1.8 (N)-layer DL-layer (N=2) Ph-layer (N=1) 7498-13.1.9 DL-name 7498-33.1.10 peer-entities 7498-13.1.11 primitive name 7498-33.1.12 DL-protocol 7498-13.1.13 DL-protocol-connection-identifier 7498-13.1.14 DL-protocol-data-unit 7498-1BS EN 61158-3-7:
49、2008Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 27/05/2009 02:19, Uncontrolled Copy, (c) BSI61158-3-7 IEC:2007(E) 9 3.1.15 DL-relay 7498-13.1.16 (N)-service DL-service (N=2) Ph-service (N=1) 7498-13.1.17 (N)-service-access-point DL-service-access-point (N=2) Ph-service-access-point (N=1) 7498-13.1.18 DL-service-data-unit 7498-13.1.19 DLS-user-data 7498-13.2 Service conv
