1、 IEC 61158-4-18 Edition 2.0 2010-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial communication networks Fieldbus specifications Part 4-18: Data-link layer protocol specification Type 18 elements Rseaux de communications industriels Spcifications de bus de terrain Partie 4-18: Spcification
2、de protocole de couche de liaison de donnes Elments de Type 18 IEC 61158-4-18:2010 THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2010 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, e
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16、contactez-nous: csciec.ch. IEC 61158-4-18 Edition 2.0 2010-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial communication networks Fieldbus specifications Part 4-18: Data-link layer protocol specification Type 18 elements Rseaux de communications industriels Spcifications de bus de terrain
17、Partie 4-18: Spcification de protocole de couche de liaison de donnes Elments de Type 18 INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE V ICS 25.04.40; 35.100.20; 35.110 PRICE CODE CODE PRIX ISBN 978-2-83220-261-6 Registered trademark of the International Electr
18、otechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 61158-4-18 IEC:2010 CONTENTS FO
19、REWORD . 5 INTRODUCTION . 7 1 Scope . 8 1.1 General . 8 1.2 Specifications 8 1.3 Procedures 8 1.4 Applicability . 9 1.5 Conformance . 9 2 Normative references . 9 3 Terms, definitions, symbols, abbreviations and conventions . 9 3.1 Reference model terms and definitions 9 3.2 Type 18: Symbols 10 3.3
20、Type 18: Additional conventions 10 4 DL-protocol overview 10 4.1 Introduction . 10 4.2 Polled DLE classes . 11 4.3 Packed DLE classes 11 5 DLPDU encoding and transmission . 11 5.1 DL PhL interface 11 5.2 DLPDU transmission encoding 12 6 DLPDU basic structure 14 6.1 Overview . 14 6.2 Address field .
21、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 method 23 8.3 Level A slave-polled method 24 8.4 Level B slave-polled method 25 8.5 Level C slave-polled method . 25 8.6 Master-packed
22、 method 26 8.7 Slave-packed method 27 9 DL-management procedures 28 9.1 Overview . 28 9.2 Establish master-polled DLE procedure . 28 9.3 Establish slave-polled DLE procedure . 29 9.4 Establish master-packed DLE procedure . 31 9.5 Establish slave-packed DLE procedure . 32 9.6 Release connection proce
23、dure 33 9.7 Suspend connection procedure . 33 9.8 Resume connection procedure 33 9.9 Activate standby Master procedure 34 Bibliography 35 61158-4-18 IEC:2010 3 Figure 1 HDLC flag 12 Table 1 HDLC convention summary . 13 Table 2 HDLC exception summary . 14 Table 3 Master-polled DLE address octet 0 14
24、Table 4 Slave-polled DLE address octet 0 15 Table 5 Master-packed DLE address octet 0 15 Table 6 Master-polled DLE status octet 0 . 16 Table 7 Master-polled DLE status octet 1 . 16 Table 8 Slave-polled DLE status octet 0 . 17 Table 9 slave-polled DLE status octet 1 . 17 Table 10 Slave-packed DLE sta
25、tus 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 Example slave-polled DLE RX contiguous data field 20 Table 15 Example master-polled DLE RWw contiguous data fi
26、eld 20 Table 16 Example slave-polled DLE RWr contiguous data field 20 Table 17 Bit-oriented segment header . 21 Table 18 Polled DLE acyclic segment number field 22 Table 19 Slave-polled DLE acyclic data type and sequence field . 22 Table 20 DLPDU Polled class poll with data 23 Table 21 Slave-polled
27、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 response . 25 Table 27 DLPDU Level C poll response 26 Table 28 DLPDU Packed class poll with data 26 Tab
28、le 29 Slave-packed DLE response timeout . 26 Table 30 Slave-packed DLE request timeout 27 Table 31 DLPDU Packed class poll response 27 Table 32 Slave-packed DLE time constraints . 28 Table 33 DLPDU Poll with test data 28 Table 34 Slave-polled DLE response timeout . 29 Table 35 DLPDU Poll test . 29 T
29、able 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 synchronization 31 Table 40 DLPDU Poll test . 31 Table 41 Slave-packed DLE response timeout . 31 4 61158-4-18 IEC:2010 Table 42 Slave-pac
30、ked 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 response 33 61158-4-18 IEC:2010 5 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INDUSTRIAL COMMUNICATION NETWOR
31、KS FIELDBUS SPECIFICATIONS Part 4-18: Data-link layer protocol specification Type 18 elements FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of I
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41、pensable for the correct application of this publication. International Standard IEC 61158-4-18 has been prepared by subcommittee 65C: Industrial networks, of IEC technical committee 65: Industrial-process measurement, control and automation. This bilingual version (2012-08) corresponds to the monol
42、ingual English version, published in 2010-08. This second edition cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. The main changes with respect to the previous edition are listed below: Editorial improvements Addition of cyclic data segmenting
43、 6 61158-4-18 IEC:2010 The text of this standard is based on the following documents: FDIS Report on voting 65C/605/FDIS 65C/619/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. The French version of this standard
44、 has not been voted upon. This publication has been drafted in accordance with ISO/IEC Directives, Part 2. A list of all the parts of the IEC 61158 series, published under the general title Industrial communication networks Fieldbus specifications, can be found on the IEC web site. The committee has
45、 decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data related to the specific publication. At this date, the publication will be reconfirmed; withdrawn; replaced by a revised edition, or a
46、mended. NOTE The revision of this standard will be synchronized with the other parts of the IEC 61158 series. 61158-4-18 IEC:2010 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 t
47、he set as defined by the “three-layer” fieldbus reference model described in IEC 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 i
48、n terms of the procedures to be carried out by peer data-link entities (DLEs) at 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 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 interwork
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