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1、BRITISH STANDARD BS EN 61158-4-17:2008 Industrial communication networks Fieldbus specifications Part 4-17: Data-link layer protocol specification Type 17 elements ICS 25.040.40; 35.100.20 BS EN 61158-4-17:2008 This British Standard was published under the authority of the Standards Policy and Strat
2、egy Committee on 30 May 2008 BSI 2008 ISBN 978 0 580 61585 6 National foreword This British Standard is the UK implementation of EN 61158-4-17:2008. It is identical with IEC 61158-4-17:2007. Together with all of the other sections of BS EN 61158-4, it supersedes BS EN 61158-4:2004 which is withdrawn
3、. The UK participation in its preparation was entrusted to Technical Committee AMT/7, Industrial communications Process measurement and control, including Fieldbus. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to
4、 include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments/corrigenda issued since publication DateComments EUROPEAN STANDARD EN 61158-4-17 NORME EUROPENNE EUROPI
5、SCHE 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 form an
6、d by any means reserved worldwide for CENELEC members. Ref. No. EN 61158-4-17:2008 E ICS 35.100.20; 25.040.40 Partially supersedes EN 61158-4:2004 English version Industrial communication networks - Fieldbus specifications - Part 4-17: Data-link layer protocol specification - Type 17 elements (IEC 6
7、1158-4-17:2007) Rseaux de communication industriels - Spcifications des bus de terrain - Partie 4-17: Spcification des protocoles des couches de liaison de donnes - Elments de type 17 (CEI 61158-4-17:2007) Industrielle Kommunikationsnetze - Feldbusse - Teil 4-17: Protokollspezifikation des Data Link
8、 Layer (Sicherungsschicht) - Typ 17-Elemente (IEC 61158-4-17:2007) 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 sta
9、ndard without any 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 ot
10、her 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 official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the Czech Repu
11、blic, Denmark, 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. Foreword The text of document 65C/474/FDIS, fut
12、ure edition 1 of IEC 61158-4-17, 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 was approved by CENELEC as EN 61158-4-17 on 2008-02-01. This and the other parts of the EN 61158-4 series
13、 supersede EN 61158-4:2004. With respect to EN 61158-4:2004 the following changes were made: deletion of Type 6 fieldbus, and the placeholder for a Type 5 fieldbus data-link layer, for lack of market relevance; addition of new fieldbus types; partition into multiple parts numbered 4-1, 4-2, , 4-19.
14、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) 2008-11-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-02-01 NOTE Use o
15、f 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-rights made by the holders of those rights permits a particular data-link layer protocol type to be used with physical layer an
16、d 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 permission from their respective intellectual-property-right holders. IEC and CENELEC draw attention to the fact that it is claimed t
17、hat compliance with this standard may involve the use of patents as follows, where the xx notation indicates the holder of the patent right: Type 17 and possibly other types: PCT Application No. PCT/JP2004/011537 YEC Communication control method PCT Application No. PCT/JP2004/011538 YEC Communicatio
18、n control method IEC and CENELEC take no position concerning the evidence, validity and scope of these patent rights. The holders of these patent rights have assured IEC that they are willing to negotiate licences under reasonable and non- discriminatory terms and conditions with applicants througho
19、ut the world. In this respect, the statement of the holders of these patent rights are registered with IEC. Information may be obtained from: YEC: Yokogawa Electric Corporation 2-9-32 Nakacho, Musashino-shi, 180-8750 Tokyo, Japan Attention: Intellectual Property b) for use in the testing and procure
20、ment of equipment; c) as part of an agreement for the admittance of systems into the open systems environment; d) as a refinement to the understanding of time-critical communications within OSI. This standard is concerned, in particular, with the communication and interworking of sensors, effectors
21、and other automation devices. By using this standard together with other standards positioned within the OSI or fieldbus reference models, otherwise incompatible systems may work together in any combination. 5 BS EN 61158-4-17:2008 INDUSTRIAL COMMUNICATION NETWORKS FIELDBUS SPECIFICATIONS Part 4-17:
22、 Data-link layer protocol specification Type 17 elements 1 Scope 1.1 General The data-link layer provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to all participating data-link entities a) in a cycl
23、ic asynchronous manner, sequentially to each of those data-link entities, and b) in a synchronous manner, either cyclically or acyclically, according to a pre-established schedule. The specified protocol also provides means of changing the set of participating data-link entities and of modifying the
24、 set of scheduled communications opportunities. When the set of scheduled communications opportunities is null, the distribution of communication opportunities to the participating data-link entities is completely asynchronous. Thus this protocol can be characterized as one which provides access asy
25、nchronously but with a synchronous overlay. 1.2 Specifications This standard specifies a) procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data- link service provider; b)
26、the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. 1.3 Procedures The procedures are defined in terms of a) the interactions between peer DL-entities (DLEs) through th
27、e exchange of fieldbus DLPDUs; b) the interactions between a DL-service (DLS) provider and a DLS-user in the same system through the exchange of DLS primitives; c) the interactions between a DLS-provider and a Ph-service provider in the same system through the exchange of Ph-service primitives. 1.4
28、Applicability These procedures are applicable to instances of communication between systems which support time-critical communications services within the data-link layer of the OSI or fieldbus reference models, and which require the ability to interconnect in an open systems interconnection environ
29、ment. Profiles provide a simple multi-attribute means of summarizing an implementations capabilities, and thus its applicability to various time-critical communications needs. 6 BS EN 61158-4-17:2008 1.5 Conformance This standard also specifies conformance requirements for systems implementing these
30、 procedures. This standard does not contain tests to demonstrate compliance with such requirements. 2 Normative reference The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For all other undated references,
31、 the latest edition of the referenced document (including any amendments) applies. IEC 61158-3-17, Industrial communication networks Fieldbus specifications Part 3-17: Data-link layer service definition Type 17 elements ISO/IEC 7498 (all parts), Information technology Open Systems Interconnection Ba
32、sic Reference Model ISO/IEC 8802-3, Information technology Telecommunications and information exchange between systems Local and metropolitan area networks - Specific requirements Part 3: Carrier sense multiple access with collision detection (CSMA/CD) access method and physical layer specifications
33、 ISO/IEC 10731, Information technology Open Systems Interconnection Basic Reference Model Conventions for the definition of OSI services IEEE Std 802.3ab, Information technology Telecommunications and information exchange between systems - Local and metropolitan area networks Specific requirements S
34、upplement to Carrier Sense Multiple Access with Collision Detection (CSMA/CD) access method and physical layer specifications Physical layer parameters and specifications for 1000 Mb/s operation over 4-pair of category 5 balanced copper cabling, type 1000BASE-T Internet Engineering Task Force (IETF)
35、, Request for Comments (RFC): RFC 768 User Datagram Protocol (available at ) RFC 791 Internet Protocol (available at ) RFC 792 Internet Control Message Protocol (available at ) RFC 826 Ethernet Address Resolution Protocol (available at ) RFC 894 A standard for the Transmission of IP Datagrams over E
36、thernet Networks (available at ) RFC 1112 Host Extensions for IP Multicasting (available at ) RFC 2236 Internet Group Management Protocol Version 2 (available at ) 3 Definitions For the purposes of this document, the following terms and definitions apply. 3.1 Terms and definitions 3.1.1 ISO/IEC 1073
37、1 terms a) (N)-connection b) (N)-entity c) (N)-layer 7 BS EN 61158-4-17:2008 d) (N)-service e) (N)-service-access-point f) confirm (primitive) g) deliver (primitive) h) indication (primitive) i) request (primitive) j) response (primitive) 3.1.2 Other terms and definitions 3.1.2.1 bridge intermediate
38、 equipment that connects two or more segments using a Data Link layer relay function 3.1.2.2 domain part of the RTE network consisting of one or two subnetwork(s) NOTE Two subnetworks are required to compose a dual-redundant RTE network, and each end node in the domain is connected to both of the su
39、bnetworks. 3.1.2.3 domain master station which performs diagnosis of routes to all other domains, distribution of network time to nodes inside the domain, acquisition of absolute time from the network time master and notification of status of the domain 3.1.2.4 domain number numeric identifier which
40、 indicates a domain 3.1.2.5 external bridge bridge to which neither internal bridges nor RTE stations are connected directly 3.1.2.6 interface port physical connection point of an end node, which has an independent DL-address 3.1.2.7 internal bridge bridge to which no routers, external bridges or no
41、des non-compliant with this specification are connected directly 3.1.2.8 junction bridge bridge to which at least one router, external bridge or node non-compliant with this specification, and to which at least one internal bridge or RTE station is connected 3.1.2.9 link physical communication chann
42、el between two nodes 3.1.2.10 network time master station which distributes network time to domain masters 8 BS EN 61158-4-17:2008 3.1.2.11 non-redundant interface node node whch has a single interface port 3.1.2.12 non-redundant station station that consists of a single end node NOTE “non-redundant
43、 station” is synonymous with “end node”. 3.1.2.13 path logical communication channel between two nodes, which consists of one or two link(s) 3.1.2.14 redundant interface node node with two interface ports one of which is connected to a primary network, while the other is connected to a secondary net
44、work 3.1.2.15 redundant station station that consists of a pair of end nodes NOTE Each end node of a redundant station has the same station number, but has a different DL-address. 3.1.2.16 route logical communication channel between two communication end nodes 3.1.2.17 router intermediate equipment
45、that connects two or more subnetworks using a network layer relay function 3.1.2.18 RTE station station with real-time capability 3.1.2.19 segment communication channel that connects two nodes directly without intervening bridges 3.1.2.20 station end node or a pair of end nodes that perform a specif
46、ic application function 3.1.2.21 station number numeric identifier which indicates a RTE station 3.1.2.22 subnetwork part of a network that does not contain any routers. A subnetwork consists of end nodes, bridges and segments NOTE Every end node included in a subnetwork has the same IP network addr
47、ess. 9 BS EN 61158-4-17:2008 3.2 Abbreviations and symbols 3.2.1 ISO/IEC 10731 abbreviations OSI Open Systems Interconnection 3.2.2 Other abbreviations and symbols ASS acknowledged sequence of unitdata transfer service AUS acknowledged unitdata transfer service DL- Data-link layer (as a prefix) DLE
48、DL-entity (the local active instance of the data-link layer) DLL DL-layer DLM DL-management DLMS DL-management Service DLPDU DL-protocol-data-unit DLS DL-service DLSAP DL-service-access-point DLSDU DL-service-data-unit FIFO first-in first-out (queuing method) ID identifier IEC International Electrot
49、echnical Commission ind indication primitive IP Internet protocol ISO International Organization for Standardization LLC logical link control lsb least significant bit MAC medium access control msb most significant bit MSS multipoint sequence of unitdata transfer service MUS multipoint unitdata transfer service PDU protocol data unit Ph- physical layer (as a prefix) PhL Ph-layer QoS quality of service req request primitive rsp response primitive