1、 IEC 61158-5-20 Edition 3.0 2014-08 INTERNATIONAL STANDARD NORME INTERNATIONALE Industrial communication networks Fieldbus specifications Part 5-20: Application layer service definition Type 20 elements Rseaux de communication industriels Spcifications des bus de terrain Partie 5-20: Dfinition des s
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20、ication networks Fieldbus specifications Part 5-20: Application layer service definition Type 20 elements Rseaux de communication industriels Spcifications des bus de terrain Partie 5-20: Dfinition des services de la couche application Elments de type 20 INTERNATIONAL ELECTROTECHNICAL COMMISSION COM
21、MISSION ELECTROTECHNIQUE INTERNATIONALE XA ICS 25.040.40; 35.100.70; 35.110 PRICE CODE CODE PRIX ISBN 978-2-8322-1741-2 Registered trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this public
22、ation from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agr. 2 IEC 61158-5-20:2014 IEC 2014 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Terms, definitions, symbols, abbreviations and convent
23、ions . 7 3.1 Terms and definitions from other ISO/IEC standards . 7 3.2 IEC 61158-1 terms 8 3.3 Type 20 fieldbus application-layer specific definitions 10 3.4 Abbreviations and symbols 12 3.5 Conventions 13 4 Concepts 16 5 Data type ASE 16 5.1 Overview . 16 5.2 Formal definition of data type objects
24、 18 5.3 FAL defined data types 20 5.4 Data type ASE service specification 23 5.5 Summary of data types 24 6 Communication model specification 24 6.1 Common parameters . 24 6.2 ASEs . 25 6.3 ARs . 52 6.4 Summary of classes 54 6.5 Permitted services by AREP role . 55 Bibliography 56 Figure 1 Data type
25、 class hierarchy . 17 Figure 2 VFD model . 25 Table 1 Packed ASCII character set . 23 Table 2 ISO Latin-1 characters 23 Table 3 Data type summary . 24 Table 4 Response code values 24 Table 5 Communication status values 25 Table 6 Identify service parameters . 28 Table 7 Read service parameters . 32
26、Table 8 Write service parameters . 33 Table 9 Information report parameters . 34 Table 10 Action service parameters . 36 Table 11 AR get attributes service parameters . 53 Table 12 AR set attributes service parameters . 54 Table 13 Class summary 55 Table 14 Confirmed services by AREP class 55 Table
27、15 Unconfirmed services by AREP class 55 IEC 61158-5-20:2014 IEC 2014 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ INDUSTRIAL COMMUNICATION NETWORKS FIELDBUS SPECIFICATIONS Part 5-20: Application layer service definition Type 20 elements FOREWORD 1) The International Electrotechnical Commission (IE
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36、f its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any
37、 other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be
38、 the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. Attention is drawn to the fact that the use of the associated protocol type is restricted by its intellectual-property-right holders. In all cases, the commitment to limited release of int
39、ellectual-property-rights made by the holders of those rights permits a layer protocol type to be used with other layer protocols of the same type, or in other type combinations explicitly authorized by its intellectual-property-right holders. NOTE Combinations of protocol types are specified in IEC
40、 61784-1 and IEC 61784-2. International Standard IEC 61158-5-20 has been prepared by subcommittee 65C: Industrial networks, of IEC technical committee 65: Industrial-process measurement, control and automation. This third edition cancels and replaces the second edition published in 2010. This editio
41、n constitutes a technical revision. 4 IEC 61158-5-20:2014 IEC 2014 The main change with respect to the previous edition is listed below: added Data types; added services; updated the Normative references, Terms, definitions, symbols, abbreviations; corrected the editorial errors and the text. The te
42、xt of this standard is based on the following documents: FDIS Report on voting 65C/763/FDIS 65C/773/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. This publication has been drafted in accordance with ISO/IEC Dir
43、ectives, Part 2. A list of all 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 decided that the contents of this publication will remain unchanged until the stability date
44、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 amended. IEC 61158-5-20:2014 IEC 2014 5 INTRODUCTION This document is one of a series produced
45、to facilitate the interconnection of automation system components. It is related to other documents in the set as defined by the “three-layer” fieldbus reference model described in IEC 61158-1. The application service is provided by the application protocol making use of the services available from
46、the data-link or other immediately lower layer. This document defines the application service characteristics that fieldbus applications and/or system management may exploit. Throughout the set of fieldbus standards, the term “service” refers to the abstract capability provided by one layer of the O
47、SI Basic Reference Model to the layer immediately above. Thus, the application layer service defined in this document is a conceptual architectural service, independent of administrative and implementation divisions. 6 IEC 61158-5-20:2014 IEC 2014 INDUSTRIAL COMMUNICATION NETWORKS FIELDBUS SPECIFICA
48、TIONS Part 5-20: Application layer service definition 1 Scope The fieldbus application layer (FAL) provides user programs with a means to access the fieldbus communication environment. In this respect, the FAL can be viewed as a “window between corresponding application programs.” This International
49、 Standard provides common elements for basic time-critical and non-time- critical messaging communications between application programs in an automation environment and material specific to Type 20 fieldbus. 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 defin
