1、BSI Standards PublicationIndustrial communication networks Fieldbus specificationsPart 5-20: Application layer service definition Type 20 elementsBS EN 61158-5-20:2014National forewordThis British Standard is the UK implementation of EN 61158-5-20:2014. It isidentical to IEC 61158-5-20:2014. It supe
2、rsedes BS EN 61158-5-20:2012which is withdrawn.The UK participation in its preparation was entrusted to Technical Com-mittee AMT/7, Industrial communications: process measurement andcontrol, including fieldbus.A list of organizations represented on this committee can be obtained onrequest to its sec
3、retary.This publication does 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 79462 9ICS 25.040.40; 35.100.70; 35.110Compliance with a Brit
4、ish Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 October 2014.Amendments issued since publicationDate Text affectedBRITISH STANDARDBS EN 61158-5-20:2014EUROPEAN STANDARD NORME EUROPEN
5、NE EUROPISCHE NORM EN 61158-5-20 October 2014 ICS 25.040.40; 35.100.70; 35.110 Supersedes EN 61158-5-20:2012 English Version Industrial communication networks - Fieldbus specifications - Part 5-20: Application layer service definition - Type 20 elements (IEC 61158-5-20:2014) Rseaux de communication
6、industriels - Spcifications des bus de terrain - Partie 5-20: Dfinition des services de la couche application - Elments de type 20 (CEI 61158-5-20:2014) Industrielle Kommunikationsnetze - Feldbusse - Teil 5-20: Dienstfestlegungen des Application Layer (Anwendungsschicht) - Typ 20-Elemente (IEC 61158
7、-5-20:2014) This European Standard was approved by CENELEC on 2014-09-22. 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 bibl
8、iographical references concerning such national 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 re
9、sponsibility of a CENELEC member into its own 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, Fi
10、nland, Former Yugoslav Republic of Macedonia, 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 Ele
11、ctrotechnical Standardization Comit Europen 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.
12、 Ref. No. EN 61158-5-20:2014 E BS EN 61158-5-20:2014EN 61158-5-20:2014 - 2 - Foreword The text of document 65C/763/FDIS, future edition 3 of IEC 61158-5-20, prepared by SC 65C “Industrial networks” of IEC/TC 65 “Industrial-process measurement, control and automation“ was submitted to the IEC-CENELEC
13、 parallel vote and approved by CENELEC as EN 61158-5-20:2014. 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) 2015-06-22 latest date by which the national standards confl
14、icting with the document have to be withdrawn (dow) 2017-09-22 This document supersedes EN 61158-5-20:2012. 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 al
15、l such patent rights. This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association. Endorsement notice The text of the International Standard IEC 61158-5-20:2014 was approved by CENELEC as a European Standard without any modifica
16、tion. In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 61158-6-20 NOTE Harmonized as EN 61158-6-20. IEC 61784-1 NOTE Harmonized as EN 61784-1. IEC 61784-2 NOTE Harmonized as EN 61784-2. BS EN 61158-5-20:2014- 3 - EN 61158-5-20:2014 Anne
17、x 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 the edition cited applies
18、. For undated references, the latest edition of the referenced document (including any amendments) applies. NOTE 1 When an International Publication 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
19、European Standards listed in this annex is available here: www.cenelec.eu Publication Year Title EN/HD Year IEC 61158-1 2014 Industrial communication networks - Fieldbus specifications - Part 1: Overview and guidance for the IEC 61158 and IEC 61784 series EN 61158-1 2014 IEC 62591 2010 Industrial co
20、mmunication networks - Wireless communication network and communication profiles - WirelessHARTTMEN 62591 2010 ISO/IEC 7498-1 - Information technology - Open Systems Interconnection - Basic reference model: The basic model - - ISO/IEC 8824-1 - Information technology - Abstract Syntax Notation One (A
21、SN.1): Specification of basic notation - - ISO/IEC 8859-1 - Information technology - 8-bit single-byte coded graphic character sets - Part-1: Latin alphabet No. 1 - - ISO/IEC 9545 - Information technology - Open Systems Interconnection - Application layer structure - - ISO/IEC 10731 - Information te
22、chnology - Open Systems Interconnection - Basic Reference Model - Conventions for the definition of OSI services - - IEEE 754 - IEEE Standard for Floating-Point Arithmetic - - BS EN 61158-5-20:2014 2 IEC 61158-5-20:2014 IEC 2014 CONTENTS INTRODUCTION . 5 1 Scope . 6 2 Normative references . 6 3 Term
23、s, definitions, symbols, abbreviations and conventions . 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 Overvi
24、ew . 16 5.2 Formal definition of data type objects 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
25、 AREP role . 55 Bibliography 56 Figure 1 Data type 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 par
26、ameters . 28 Table 7 Read service parameters . 32 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 T
27、able 14 Confirmed services by AREP class 55 Table 15 Unconfirmed services by AREP class 55 BS EN 61158-5-20:2014IEC 61158-5-20:2014 IEC 2014 5 INTRODUCTION This document is one of a series produced to facilitate the interconnection of automation system components. It is related to other documents in
28、 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 the data-link or other immediately lower layer. This document defines the application service characte
29、ristics 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 OSI Basic Reference Model to the layer immediately above. Thus, the application layer service defined i
30、n this document is a conceptual architectural service, independent of administrative and implementation divisions. BS EN 61158-5-20:2014 6 IEC 61158-5-20:2014 IEC 2014 INDUSTRIAL COMMUNICATION NETWORKS FIELDBUS SPECIFICATIONS Part 5-20: Application layer service definition 1 Scope The fieldbus appli
31、cation 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 Standard provides common elements for basic time-critical and non-time-critical
32、 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 defined level
33、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 International Standard defines in an abstract way the externally visible service provided by the
34、Type 20 fieldbus Application Layer in terms of a) an abstract model for defining application resources (objects) capable of being manipulated by users via the use of the FAL service, b) the primitive actions and events of the service; c) the parameters associated with each primitive action and event
35、, and the form which they take; and d) the interrelationship between these actions and events, and their valid sequences. The purpose of this International Standard is to define the services provided to the FAL user at the boundary between the user and the Application Layer of the Fieldbus Reference
36、 Model. This International Standard specifies the structure and services of the IEC fieldbus Application Layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498-1) and the OSI Application Layer Structure (ISO/IEC 9545). Although these services specify, from the perspective of applicat
37、ions, how request and responses are issued and delivered, they do not include a specification of what the requesting and responding applications are to do with them. That is, the behavioral aspects of the applications are not specified; only a definition of what requests and responses they can send/
38、receive is specified. This permits greater flexibility to the FAL users in standardizing such object behavior. In addition to these services, some supporting services are also defined in this International Standard to provide access to the FAL to control certain aspects of its operation. 2 Normative
39、 references The following documents, 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) appl
40、ies. BS EN 61158-5-20:2014IEC 61158-5-20:2014 IEC 2014 7 NOTE All parts of the IEC 61158 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. IE
41、C 61158-1:2014, Industrial communication networks Fieldbus specifications Part 1: Overview and guidance for the IEC 61158 and IEC 61784 series IEC 62591:2010, Industrial communication networks Wireless communication network and communication profiles WirelessHART ISO/IEC 7498-1, Information technolo
42、gy Open Systems Interconnection Basic Reference Model: The Basic Model ISO/IEC 8824-1, Information technology Abstract Syntax Notation One (ASN.1): Specification of basic notation ISO/IEC 8859-1, Information technology 8-bit single-byte coded graphic character sets Part 1: Latin alphabet No. 1 ISO/I
43、EC 9545, Information technology Open Systems Interconnection Application Layer structure ISO/IEC 10731, Information technology Open Systems Interconnection Basic Reference Model Conventions for the definition of OSI services ANSI/IEEE 754: IEEE Standard for Floating-Point Arithmetic 3 Terms, definit
44、ions, symbols, abbreviations and conventions For the purposes of this document, the following terms, definitions, abbreviations, symbols and conventions apply. Terms and definitions from other ISO/IEC standards 3.1ISO/IEC 7498-1 terms 3.1.1a) abstract syntax b) application entity c) application proc
45、ess d) application protocol data unit e) application service element ISO/IEC 9545 terms 3.1.2a) application-entity-invocation b) application-service-element c) application-service-element ISO/IEC 8824-1 terms 3.1.3a) object identifier b) type c) value d) simple type e) structured type f) component t
46、ype BS EN 61158-5-20:2014 8 IEC 61158-5-20:2014 IEC 2014 g) tag h) true i) false j) integer type k) octet string type m) null type IEC 61158-1 terms 3.2For the purposes of this document, the following terms and definitions apply. 3.2.1application function or data structure for which data is consumed
47、 or produced 3.2.2application object object class that manages and provides the run time exchange of messages across the network and within the network device Note 1 to entry: Multiple types of application object classes may be defined. 3.2.3application process part of a distributed application on a
48、 network, which is located on one device and unambiguously addressed 3.2.4application process object component of an application process that is identifiable and accessible through an FAL application relationship Note 1 to entry: Application process object definitions are composed of a set of values
49、 for the attributes of their class (see the definition for Application Process Object Class Definition). Application process object definitions may be accessed remotely using the services of the FAL Object Management ASE. FAL Object Management services can be used to load or update object definitions, to read object definitions, and to dynamically create and delete application objects and their corresponding definitions 3.2.5application process object
