1、BSI Standards PublicationIndustrial communication networks Fieldbus specificationsPart 3-20: Data-link layer service definition Type 20 elementsBS EN 61158-3-20:2014National forewordThis British Standard is the UK implementation of EN 61158-3-20:2014. It isidentical to IEC 61158-3-20:2014.The UK par
2、ticipation in its preparation was entrusted to Technical Com-mittee AMT/7, Industrial communications: process measurement andcontrol, including fieldbus, classification and testing.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does
3、not purport to include all the necessary provisions ofa contract. Users are responsible for its correct application. The British Standards Institution 2014.Published by BSI Standards Limited 2014ISBN 978 0 580 79369 1ICS 25.040.40; 35.100.20; 35.240.50Compliance with a British Standard cannot confer
4、 immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2014.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 61158-3-20:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE N
5、ORM EN 61158-3-20 October 2014 ICS 25.040.40; 35.100.20; 35.110 English Version Industrial communication networks - Fieldbus specifications - Part 3-20: Data-link layer service definition - Type 20 elements (IEC 61158-3-20:2014) Rseaux de communication industriels - Spcifications des bus de terrain
6、- Partie 3-20: Dfinition des services de la couche liaison de donnes - lments de type 20 (CEI 61158-3-20:2014) Industrielle Kommunikationsnetze - Feldbusse - Teil 3-20: Dienstfestlegungen des Data Link Layer (Sicherungsschicht) - Typ 20-Elemente (IEC 61158-3-20:2014) This European Standard was appro
7、ved by CENELEC on 2014-09-17. 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 bibliographical references concerning such natio
8、nal standards may be obtained on application to the CEN-CENELEC Management Centre 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 ow
9、n language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia
10、, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. European Committee for Electrotechnical Standardization Comit Europen
11、de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members. Ref. No. EN 61158-3-20:2014 E BS EN 61158-3
12、-20:2014EN 61158-3-20:2014 - 2 - Foreword The text of document 65C/759/FDIS, future edition 1 of IEC 61158-3-20, prepared by SC 65C “Industrial networks“ of IEC/TC 65 “Industrial-process measurement, control and automation“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN
13、 61158-3-20:2014. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2015-06-17 latest date by which the national standards conflicting with the document have to be withdraw
14、n (dow) 2017-09-17 Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC and/or CEN shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CENELEC by
15、 the European Commission and the European Free Trade Association. Endorsement notice The text of the International Standard IEC 61158-3-20:2014 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
16、 the standards indicated: IEC 61158-1 NOTE Harmonized as EN 61158-1. IEC 61158-2 NOTE Harmonized as EN 61158-2. IEC 61158-4-20 NOTE Harmonized as EN 61158-4-20. IEC 61158-5-20 NOTE Harmonized as EN 61158-5-20. IEC 61158-6-20 NOTE Harmonized as EN 61158-6-20. IEC 61784-1:2014 NOTE Harmonized as EN 61
17、784-1 1)(not modified). IEC 62591:2010 NOTE Harmonized as EN 62591:2010 (not modified). 1)To be published. BS EN 61158-3-20:2014- 3 - EN 61158-3-20:2014 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in
18、whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Public
19、ation has been modified by common modifications, indicated by (mod), the relevant EN/HD applies. NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available here: www.cenelec.eu. Publication Year Title EN/HD Year ISO/IEC 7498-1 - Information techn
20、ology - Open Systems Interconnection - Basic Reference Model: The Basic Model - - ISO/IEC 7498-3 - Information technology - Open Systems Interconnection - Basic Reference Model: Naming and addressing - - ISO/IEC 8886 - Information technology - Open Systems Interconnection - Data link service definit
21、ion - - ISO/IEC 10731 - Information technology - Open Systems Interconnection - Basic Reference Model - Conventions for the definition of OSI services - - BS EN 61158-3-20:2014 2 IEC 61158-3-20:2014 IEC 2014 CONTENTS INTRODUCTION . 5 1 Scope . 6 General . 6 1.1Specification . 6 1.2Conformance . 6 1.
22、32 Normative references . 7 3 Terms, definitions, symbols, abbreviations and conventions . 7 Reference model terms and definitions 7 3.1Service convention terms and definitions . 8 3.2Common data-link service terms and definitions 9 3.3Additional Type 20 data-link specific definitions . 10 3.4Common
23、 symbols and abbreviations . 17 3.5Additional Type 20 symbols and abbreviations 17 3.6Common conventions 18 3.74 Type 20 Data-link layer services . 19 General . 19 4.1Data-link layer services . 20 4.2Bibliography 27 Figure 1 Relationships of DLSAPs, DLSAP-addresses and group DL-addresses 9 Figure 2
24、Data exchange service . 21 Figure 3 Receive only data service 21 Figure 4 Cyclic data transfer service 22 Table 1 DL-DATA-EXCHANGE primitives and parameters 22 Table 2 DL-RECEIVE primitive and parameters 24 Table 3 DL-CYCLIC-DATA primitives and parameters . 24 Table 4 DLM-SET primitive and parameter
25、s 25 Table 5 DLM-GET primitive and parameters . 25 BS EN 61158-3-20:2014IEC 61158-3-20:2014 IEC 2014 5 INTRODUCTION This standard 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”
26、 fieldbus reference model described in IEC 61158-1. Throughout the set of fieldbus 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 co
27、nceptual architectural service, independent of administrative and implementation divisions. BS EN 61158-3-20:2014 6 IEC 61158-3-20:2014 IEC 2014 INDUSTRIAL COMMUNICATION NETWORKS FIELDBUS SPECIFICATIONS Part 3-20: Data-link layer service definition Type 20 elements 1 Scope General 1.1This Internatio
28、nal Standard 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 defined
29、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 20
30、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 stan
31、dard is to define the services provided to: the Type 20 fieldbus application layer at the boundary between the application and data-link layers of the fieldbus reference model; systems management at the boundary between the data-link layer and systems management of the fieldbus reference model. Type
32、 20 DL-service provides both a connected and a connectionless subset of those services specified in ISO/IEC 8886. Specification 1.2The principal objective of this standard is to specify the characteristics of conceptual data-link layer services suitable for time-critical communications and thus supp
33、lement the OSI Basic Reference Model in guiding the development of data-link protocols for time-critical communications. 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-Program
34、ming-Interfaces. Nevertheless, it is not a formal programming interface, and any such interface will need to address implementation issues not covered by this specification, including: a) the sizes and octet ordering of various multi-octet service parameters; b) the correlation of paired request and
35、 confirm, or indication and response, primitives. Conformance 1.3This standard does not specify individual implementations or products, nor does it constrain the implementations of data-link entities within industrial automation systems. BS EN 61158-3-20:2014IEC 61158-3-20:2014 IEC 2014 7 There is n
36、o conformance of equipment to this data-link layer service definition standard. Instead, conformance is achieved through implementation of the corresponding data-link protocol that fulfills the Type 20 data-link layer services defined in this standard. 2 Normative references The following documents,
37、 in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE All parts of the IEC 61158
38、 series, as well as IEC 61784-1 and IEC 61784-2 are maintained simultaneously. Cross-references to these documents within the text therefore refer to the editions as dated in this list of normative references. ISO/IEC 7498-1, Information technology Open Systems Interconnection Basic Reference Model:
39、 The Basic Model ISO/IEC 7498-3, Information technology Open Systems Interconnection Basic Reference Model: Naming and addressing ISO/IEC 8886, Information technology Open Systems Interconnection Data link service definition ISO/IEC 10731, Information technology Open Systems Interconnection Basic Re
40、ference Model Conventions for the definition of OSI services 3 Terms, definitions, symbols, abbreviations and conventions For the purposes of this document, the following terms, definitions, symbols, abbreviations and conventions apply. Reference model terms and definitions 3.1This standard is based
41、 in part on the concepts developed in ISO/IEC 7498-1 and ISO/IEC 7498-3, and makes use of the following terms defined therein: 3.1.1 DL-address ISO/IEC 7498-3 3.1.2 DL-address-mapping ISO/IEC 7498-1 3.1.3 called-DL-address ISO/IEC 7498-3 3.1.4 calling-DL-address ISO/IEC 7498-3 3.1.5 centralized mult
42、i-end-point-connection ISO/IEC 7498-1 3.1.6 DL-connection ISO/IEC 7498-1 3.1.7 DL-connection-end-point ISO/IEC 7498-1 3.1.8 DL-connection-end-point-identifier ISO/IEC 7498-1 3.1.9 DL-connection-mode transmission ISO/IEC 7498-1 3.1.10 DL-connectionless-mode transmission ISO/IEC 7498-1 3.1.11 correspo
43、ndent (N)-entities correspondent DL-entities (N=2) correspondent Ph-entities (N=1) ISO/IEC 7498-1 3.1.12 DL-duplex-transmission ISO/IEC 7498-1 3.1.13 (N)-entity DL-entity (N=2) Ph-entity (N=1) ISO/IEC 7498-1 3.1.14 DL-facility ISO/IEC 7498-1 3.1.15 flow control ISO/IEC 7498-1 BS EN 61158-3-20:2014 8
44、 IEC 61158-3-20:2014 IEC 2014 3.1.16 (N)-layer DL-layer (N=2) Ph-layer (N=1) ISO/IEC 7498-1 3.1.17 layer-management ISO/IEC 7498-1 3.1.18 DL-local-view ISO/IEC 7498-3 3.1.19 DL-name ISO/IEC 7498-3 3.1.20 naming-(addressing)-domain ISO/IEC 7498-3 3.1.21 peer-entities ISO/IEC 7498-1 3.1.22 primitive n
45、ame ISO/IEC 7498-3 3.1.23 DL-protocol ISO/IEC 7498-1 3.1.24 DL-protocol-connection-identifier ISO/IEC 7498-1 3.1.25 DL-protocol-data-unit ISO/IEC 7498-1 3.1.26 DL-relay ISO/IEC 7498-1 3.1.27 reset ISO/IEC 7498-1 3.1.28 responding-DL-address ISO/IEC 7498-3 3.1.29 routing ISO/IEC 7498-1 3.1.30 segment
46、ing ISO/IEC 7498-1 3.1.31 (N)-service DL-service (N=2) Ph-service (N=1) ISO/IEC 7498-1 3.1.32 (N)-service-access-point DL-service-access-point (N=2) Ph-service-access-point (N=1) ISO/IEC 7498-1 3.1.33 DL-service-access-point-address ISO/IEC 7498-3 3.1.34 DL-service-connection-identifier ISO/IEC 7498
47、-1 3.1.35 DL-service-data-unit ISO/IEC 7498-1 3.1.36 DL-simplex-transmission ISO/IEC 7498-1 3.1.37 DL-subsystem ISO/IEC 7498-1 3.1.38 systems-management ISO/IEC 7498-1 3.1.39 DLS-user-data ISO/IEC 7498-1 Service convention terms and definitions 3.2This standard also makes use of the following terms
48、defined in ISO/IEC 10731 as they apply to the data-link layer: 3.2.1 acceptor 3.2.2 asymmetrical service 3.2.3 confirm (primitive); requestor.deliver (primitive) 3.2.4 deliver (primitive) 3.2.5 DL-confirmed-facility 3.2.6 DL-facility 3.2.7 DL-local-view 3.2.8 DL-mandatory-facility 3.2.9 DL-non-confi
49、rmed-facility 3.2.10 DL-provider-initiated-facility 3.2.11 DL-provider-optional-facility 3.2.12 DL-service-primitive; primitive 3.2.13 DL-service-provider 3.2.14 DL-service-user 3.2.15 DLS-user-optional-facility 3.2.16 indication (primitive); acceptor.deliver (primitive) 3.2.17 multi-peer 3.2.18 request (primitive); requestor.submit (primitive) 3.2.19 requestor 3.2.20 response (primitive); BS
