1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationIndustrial communication networks Fieldbus specificationsPart 4-18: Data-link layer protocol specification Type 18 elementsBS EN 61158-4-18:2012National forewordThis British Stan
2、dard is the UK implementation of EN 61158-4-18:2012. It is identical to IEC 61158-4-18:2010. It supersedes BS EN 61158-4-18:2008 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee AMT/7, Industrial communications: process measurement and control, includin
3、g fieldbus.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2012Published by
4、BSI Standards Limited 2012 ISBN 978 0 580 71548 8 ICS 25.040.40; 35.100.20; 35.240.50Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2012.Amendments issu
5、ed since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 61158-4-18:2012EUROPEAN STANDARD EN 61158-4-18 NORME EUROPENNE EUROPISCHE NORM May 2012 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrot
6、echnische Normung Management Centre: Avenue Marnix 17, B - 1000 Brussels 2012 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 61158-4-18:2012 E ICS 25.040.40; 35.100.20; 35.110 Supersedes EN 61158-4-18:2008English version Industri
7、al communication networks - Fieldbus specifications - Part 4-18: Data-link layer protocol specification - Type 18 elements (IEC 61158-4-18:2010) Rseaux de communication industriels - Spcifications de bus de terrain - Partie 4-18: Spcification du protocole de couche de liaison de donnes - Elments de
8、type 18 (CEI 61158-4-18:2010) Industrielle Kommunikationsnetze - Feldbusse - Teil 4-18: Protokollspezifikation des Data Link Layer (Sicherungsschicht) - Typ 18-Elemente (IEC 61158-4-18:2010) This European Standard was approved by CENELEC on 2012-03-28. CENELEC members are bound to comply with the CE
9、N/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 CEN-CENELEC Management Ce
10、ntre 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 CEN-CENELEC Management Centre has the same sta
11、tus as the official versions. CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands,
12、Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 61158-4-18:2012EN 61158-4-18:2012 - 2 - Foreword The text of document 65C/605/FDIS, future edition 2 of IEC 61158-4-18, prepared by SC 65C, “Industrial networks“, of IEC/TC 65, “In
13、dustrial-process measurement, control and automation“ was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as EN 61158-4-18:2012. The following dates are fixed: latest date by which the document has to be implemented at national level by publication of an identical national standar
14、d or by endorsement (dop) 2012-12-28 latest date by which the national standards conflicting with the document have to be withdrawn (dow) 2015-03-28 This document supersedes EN 61158-4-18:2008. EN 61158-4-18:2012 includes the following significant technical changes with respect to EN 61158-4-18:2008
15、: Editorial improvements; Addition of cyclic data segmenting. 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. Endorsement notice The t
16、ext of the International Standard IEC 61158-4-18:2010 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 the standards indicated: IEC/TR 61158-1:2010 NOTE Harmonized as CLC/TR 61158-1:2010 (not
17、modified). IEC 61158-2:2010 NOTE Harmonized as EN 61158-2:2010 (not modified). IEC 61158-3-18 NOTE Harmonized as EN 61158-3-18. IEC 61158-5-18:2010 NOTE Harmonized as EN 61158-5-18:2012 (not modified). IEC 61158-6-18:2010 NOTE Harmonized as EN 61158-6-18:2012 (not modified). BS EN 61158-4-18:2012- 3
18、 - EN 61158-4-18:2012 Annex ZA (normative) Normative references to international publications with their corresponding European publications The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only
19、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. 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 IS
20、O/IEC 7498-1 - Information technology - 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 13239 2002 Information technology - Telecommunications a
21、nd information exchange between systems - High-level data link control (HDLC) procedures - - BS EN 61158-4-18:2012 2 61158-4-18 IEC:2010(E) CONTENTS INTRODUCTION.7 1 Scope.8 1.1 General .8 1.2 Specifications8 1.3 Procedures8 1.4 Applicability.9 1.5 Conformance.9 2 Normative references .9 3 Terms, de
22、finitions, symbols, abbreviations and conventions .9 3.1 Reference model terms and definitions9 3.2 Type 18: Symbols10 3.3 Type 18: Additional conventions10 4 DL-protocol overview10 4.1 Introduction .10 4.2 Polled DLE classes .11 4.3 Packed DLE classes11 5 DLPDU encoding and transmission.11 5.1 DL P
23、hL interface 11 5.2 DLPDU transmission encoding 12 6 DLPDU basic structure 14 6.1 Overview .14 6.2 Address field .14 6.3 Status field 15 6.4 Data field.17 7 DLPDU Detailed structure, segmenting and reassembly 19 8 Data transmission methods 23 8.1 Overview .23 8.2 Master-polled method23 8.3 Level A s
24、lave-polled method24 8.4 Level B slave-polled method25 8.5 Level C slave-polled method .25 8.6 Master-packed method 26 8.7 Slave-packed method27 9 DL-management procedures28 9.1 Overview .28 9.2 Establish master-polled DLE procedure.28 9.3 Establish slave-polled DLE procedure .29 9.4 Establish maste
25、r-packed DLE procedure .31 9.5 Establish slave-packed DLE procedure .32 9.6 Release connection procedure 33 9.7 Suspend connection procedure .33 9.8 Resume connection procedure 33 9.9 Activate standby Master procedure34 Bibliography35 BS EN 61158-4-18:201261158-4-18 IEC:2010(E) 3 Figure 1 HDLC flag
26、12 Table 1 HDLC convention summary .13 Table 2 HDLC exception summary .14 Table 3 Master-polled DLE address octet 014 Table 4 Slave-polled DLE address octet 015 Table 5 Master-packed DLE address octet 015 Table 6 Master-polled DLE status octet 0.16 Table 7 Master-polled DLE status octet 1.16 Table 8
27、 Slave-polled DLE status octet 0.17 Table 9 slave-polled DLE status octet 1 .17 Table 10 Slave-packed DLE status 17 Table 11 DLPDU Master-polled DLE acyclic data field 18 Table 12 DLPDU Slave-polled DLE acyclic data field 19 Table 13 Example master-polled DLE RY contiguous data field .20 Table 14 Ex
28、ample slave-polled DLE RX contiguous data field20 Table 15 Example master-polled DLE RWw contiguous data field 20 Table 16 Example slave-polled DLE RWr contiguous data field20 Table 17 Bit-oriented segment header .21 Table 18 Polled DLE acyclic segment number field 22 Table 19 Slave-polled DLE acycl
29、ic data type and sequence field .22 Table 20 DLPDU Polled class poll with data23 Table 21 Slave-polled DLE response timeout.23 Table 22 DLPDU Poll 24 Table 23 DLPDU End of cycle.24 Table 24 slave-polled DLE request timeout 24 Table 25 DLPDU Level A poll response.25 Table 26 DLPDU Level B poll respon
30、se.25 Table 27 DLPDU Level C poll response 26 Table 28 DLPDU Packed class poll with data 26 Table 29 Slave-packed DLE response timeout .26 Table 30 Slave-packed DLE request timeout27 Table 31 DLPDU Packed class poll response27 Table 32 Slave-packed DLE time constraints .28 Table 33 DLPDU Poll with t
31、est data 28 Table 34 Slave-polled DLE response timeout.29 Table 35 DLPDU Poll test .29 Table 36 Slave-polled DLE request timeout .29 Table 37 DLPDU Poll test response 30 Table 38 Slave-polled DLE configuration parameter.30 Table 39 DLPDU Baud rate synchronization31 Table 40 DLPDU Poll test .31 Table
32、 41 Slave-packed DLE response timeout .31 BS EN 61158-4-18:2012 4 61158-4-18 IEC:2010(E) Table 42 Slave-packed DLE number of occupied DLE station slots 32 Table 43 Slave-packed DLE baud rate synchronization timeout .32 Table 44 Slave-packed DLE Master timeout.33 Table 45 DLPDU Packed poll test respo
33、nse 33 BS EN 61158-4-18:201261158-4-18 IEC:2010(E) 7 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 IE
34、C 61158-1. The data-link protocol provides the data-link service by making use of the services available from the physical layer. The primary aim of this standard is to provide a set of rules for communication expressed in terms of the procedures to be carried out by peer data-link entities (DLEs) a
35、t the time of communication. These rules for communication are intended to provide a sound basis for development in order to serve a variety of purposes: a) as a guide for implementors and designers; b) for use in the testing and procurement of equipment; c) as part of an agreement for the admittanc
36、e 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 and other automation devices. By using this standard together w
37、ith other standards positioned within the OSI or fieldbus reference models, otherwise incompatible systems may work together in any combination. NOTE Use of some of the associated protocol types is restricted by their intellectual-property-right holders. In all cases, the commitment to limited relea
38、se 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 and application layer protocols in Type combinations as specified explicitly in the profile parts. Use of the various protocol types in other combi
39、nations may require permission from their respective intellectual-property-right holders. The International Electrotechnical Commission (IEC) draws attention to the fact that it is claimed that compliance with this document may involve the use of patents concerning Type 18 elements and possibly othe
40、r types given in 7.1.2 as follows: 3343036/Japan MEC Network System for a Programmable Controller 5896509/USA MEC Network System for a Programmable Controller 246906/Korea MEC Network System for a Programmable Controller 19650753/Germany MEC Network System for a Programmable Controller IEC takes no
41、position concerning the evidence, validity and scope of these patent rights. The holder of thess patent rights has assured the IEC that he/she is willing to negotiate licences either free of charge or under reasonable and non-discriminatory terms and conditions with applicants throughout the world.
42、In this respect, the statement of the holder of thess patent rights is registered with IEC. Information may be obtained from: MEC Mitsubishi Electric Corporation Corporate Licensing DeivsionDivision 7-3, Marunouchi 2-chome, Chiyoda-ku, Tokyo 100-8310, Japan Attention is drawn to the possibility that
43、 some of the elements of this document may be the subject of patent rights other than those identified above. IEC shall not be held responsible for identifying any or all such patent rights. ISO (www.iso.org/patents) and IEC (http:/www.iec.ch/tctools/patent_decl.htm) maintain on-line data bases of p
44、atents relevant to their standards. Users are encouraged to consult the data bases for the most up to date information concerning patents. BS EN 61158-4-18:2012 8 61158-4-18 IEC:2010(E) INDUSTRIAL COMMUNICATION NETWORKS FIELDBUS SPECIFICATIONS Part 4-18: Data-link layer protocol specification Type 1
45、8 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 synchronously-starting cyclic manner, according to
46、 a pre-established schedule, and b) in a cyclic or acyclic asynchronous manner, as requested each cycle by each of those data-link entities. Thus this protocol can be characterized as one which provides cyclic and acyclic access asynchronously but with a synchronous restart of each cycle. 1.2 Specif
47、ications This part of IEC 61158 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) procedures for giving communications opportuni
48、ties to all participating DL-entities, sequentially and in a cyclic manner for deterministic and synchronized transfer at cyclic intervals up to one millisecond; c) procedures for giving communication opportunities available for time-critical data transmission together with non-time-critical data tr
49、ansmission without prejudice to the time-critical data transmission; d) procedures for giving cyclic and acyclic communication opportunities for time-critical data transmission with prioritized access; e) procedures for giving communication opportunities based on standard ISO/ IEC 8802-3 medium access control, with provisions for nodes to be added or removed during nor
