EN IEC 61158-5-21:2019
(Main)Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements
Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer service definition - Type 21 elements
IEC 61158-5-21:2019 specifies the structure and services of the type 21 IEC fieldbus Application Layer, in conformance with the OSI Basic Reference Model (ISO/IEC 7498) and the OSI Application Layer Structure (ISO/IEC 9545). This second edition cancels and replaces the first edition published in 2010. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: •added Write and Read service; •miscellaneous editorial corrections.
Industrielle Kommunikationsnetze - Feldbusse - Teil 5-21: Dienstfestlegungen des Application Layer (Anwendungsschicht) - Typ 21-Elemente
Réseaux de communication industriels- Spécifications des bus de terrain - Partie 5-21 : Définition des services de la couche application - Éléments de type 21
L’IEC 61158-5-21:2019 fournit les éléments communs pour les communications de base à temps critique et à temps non critique entre des programmes d'application dans un environnement d'automatisation ainsi que le matériau spécifique au protocole de type 21. Le terme "à temps critique" sert à représenter la présence d'une fenêtre temporelle, dans les limites de laquelle il est exigé qu'une ou plusieurs actions spécifiées soient terminées avec un certain niveau défini de certitude. Le manquement à parachever les actions spécifiées dans les limites de la fenêtre temporelle risque d'entraîner la défaillance des applications qui demandent ces actions, avec le risque concomitant pour l'équipement, la centrale et éventuellement pour la vie humaine.
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 5-21. del: Definicija opravil na aplikacijski ravni - Elementi tipa 21 (IEC 61158-5-21:2019)
Aplikacijski nivo procesnih vodil (FAL) uporabniškim programom omogoča dostop do komunikacijskega okolja procesnih vodil. Glede na to je mogoče aplikacijski nivo procesnih vodil šteti za »okno med ustreznimi aplikacijami«. Ta del standarda IEC 61158 določa skupne elemente za osnovne časovno kritične in časovno nekritične sporočilne komunikacije med aplikacijami v avtomatizacijskem okolju ter material, specifičen za protokol tipa 21. Izraz »časovno kritičen« se uporablja za predstavitev prisotnosti časovnega okna, v okviru katerega se zahteva dokončanje enega ali več opredeljenih dejanj z določeno stopnjo gotovosti. Zaradi neuspešnega dokončanja opredeljenih dejanj v časovnem oknu je možna odpoved aplikacij, ki zahtevajo dejanja, pri čemer so ogroženi oprema, obrat in morda človeška življenja. Ta mednarodni standard na abstrakten način določa zunanje vidno opravilo, ki ga zagotavlja aplikacijski nivo procesnih vodil v zvezi s/z: a) abstraktnim modelom za določanje aplikacijskih virov (objektov), ki jih uporabniki lahko spreminjajo prek opravila aplikacijskega nivoja procesnih vodil; b) primitivnimi dejanji in dogodki opravila; c) parametri, povezanimi z vsakim primitivnim dejanjem in dogodkom, kot tudi obliko, ki jo prevzamejo; d) medsebojno povezavo med temi dejanji in dogodki ter njihovimi veljavnimi zaporedji. Namen tega dokumenta je opredeliti opravila, ki se zagotavljajo za: a) uporabnika aplikacijskega nivoja procesnih vodil na meji med uporabnikom in aplikacijskim nivojem referenčnega modela procesnih vodil; b) upravljanje sistemov na meji med aplikacijskim nivojem in upravljanje sistemov referenčnega modela procesnih vodil. Ta dokument opisuje strukturo in opravila aplikacijskega nivoja procesnih vodil IEC v skladu z osnovnim referenčnim modelom OSI (ISO/IEC 7498) ter strukturo aplikacijskega nivoja OSI (ISO/IEC 9545). Opravila in protokole aplikacijskega nivoja procesnih vodil zagotavljajo aplikacijski osebki (AE) aplikacijskega nivoja procesnih vodil v aplikacijskih procesih. Aplikacijski osebek aplikacijskega nivoja procesnih vodil sestavljata sklop objektno usmerjenih aplikacijskih opravilnih elementov (ASE) in osebek za upravljanje nivojev (LME), ki upravlja aplikacijski osebek. Aplikacijski opravilni elementi zagotavljajo komunikacijska opravila, ki delujejo na sklopu povezanih razredov objektov aplikacijskega procesa (APO). Med aplikacijske opravilne elemente aplikacijskega nivoja procesnih vodil spada aplikacijski opravilni element za upravljanje, ki zagotavlja skupen sklop opravil za upravljanje primerkov razredov aplikacijskega nivoja procesnih vodil. Čeprav ta opravila z vidika aplikacij določajo način izdajanja ter dostavljanja zahtev in odzivov, ne zajemajo specifikacije v zvezi s tem, kako naj se nanje odzovejo aplikacije, ki te zahteve in odzive oddajajo. To pomeni, da ta opravila opredeljujejo samo zahteve in odzive, ki jih lahko aplikacije pošiljajo ali prejemajo, in ne funkcije samih aplikacij. Tako se uporabnikom aplikacijskega nivoja procesnih vodil omogoči večja prilagodljivost pri standardizaciji takega vedenja objektov. Poleg teh opravil so v tem dokumentu opredeljena tudi nekatera podporna opravila, da se omogoči dostop do aplikacijskega nivoja procesnih vodil za nadzorovanje nekaterih vidikov njegovega delovanja.
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 61158-5-21:2012
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 5-21. del:
Definicija opravil na aplikacijski ravni - Elementi tipa 21 (IEC 61158-5-21:2019)
Industrial communication networks - Fieldbus specifications - Part 5-21: Application layer
service definition - Type 21 elements (IEC 61158-5-21:2019)
Industrielle Kommunikationsnetze - Feldbusse - Teil 5-21: Dienstfestlegungen des
Application Layer (Anwendungsschicht) - Typ 21-Elemente (IEC 61158-5-21:2019)
Réseaux de communication industriels- Spécifications des bus de terrain - Partie 5-21 :
Définition des services de la couche application - Éléments de type 21 (IEC 61158-5-
21:2019)
Ta slovenski standard je istoveten z: EN IEC 61158-5-21:2019
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.70 Uporabniški sloj Application layer
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD EN IEC 61158-5-21
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 25.040.40; 35.100.70; 35.110 Supersedes EN 61158-5-21:2012
English Version
Industrial communication networks - Fieldbus specifications -
Part 5-21: Application layer service definition - Type 21 elements
(IEC 61158-5-21:2019)
Réseaux de communication industriels- Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 5-21:
bus de terrain - Partie 5-21 : Définition des services de la Dienstfestlegungen des Application Layer
couche application - Éléments de type 21 (Anwendungsschicht) - Typ 21-Elemente
(IEC 61158-5-21:2019) (IEC 61158-5-21:2019)
This European Standard was approved by CENELEC on 2019-05-15. 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 bibliographical 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 responsibility 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, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2019 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 61158-5-21:2019 E
European foreword
The text of document 65C/947/FDIS, future edition 2 of IEC 61158-5-21, 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 approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-02-15
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-15
document have to be withdrawn
This document supersedes EN 61158-5-21:2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 61158-5-21:2019 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 61158-1:2019 NOTE Harmonized as EN IEC 61158-1:2019 (not modified)
IEC 61158-2 NOTE Harmonized as EN 61158-2
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments)
applies.
NOTE 1 Where 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 European Standards listed in this annex is available here:
www.cenelec.eu.
Publication Year Title EN/HD Year
ISO/IEC/IEEE 2011 Information technology - Microprocessor - -
60559 Systems - Floating-Point arithmetic
IEC 61158-3-21 2019 Industrial communication networks - - -
Fieldbus specifications - Part 3-21: Data-
link layer service definition - Type 21
elements
IEC 61158-4-21 2019 Industrial communication networks - EN IEC 61158-4-21 2019
Fieldbus specifications - Part 4-21: Data-
link layer protocol specification - Type 21
elements
IEC 61158-6-21 2019 Industrial communication networks - EN 61158-6-21 2019
Fieldbus specifications - Part 6-21:
Application layer protocol specification -
Type 21 elements
ISO/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 8822 - Information technology - Open Systems - -
Interconnection - Presentation service
definition
ISO/IEC 8824 series Information technology - Abstract Syntax - -
Notation One (ASN.1): Specification of
basic notation
ISO/IEC 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
IEC 61158-5-21 ®
Edition 2.0 2019-04
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 5-21: Application layer service definition – Type 21 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.70; 35.110 ISBN 978-2-8322-6752-3
– 2 – IEC 61158-5-21:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
1.1 Overview . 8
1.2 Specifications . 9
1.3 Conformance . 9
2 Normative references . 9
3 Terms, definitions, symbols, abbreviations, and conventions . 10
3.1 Terms and definitions from other ISO/IEC standards . 10
3.1.1 ISO/IEC 7498-1 terms. 10
3.1.2 ISO/IEC 8822 terms . 10
3.1.3 ISO/IEC 8824-1 terms. 10
3.1.4 ISO/IEC 9545 terms . 11
3.2 Fieldbus data link layer terms . 11
3.3 Fieldbus application layer specific definitions . 11
3.4 Abbreviations and symbols . 17
3.5 Conventions . 17
3.5.1 Overview . 17
3.5.2 General conventions . 18
3.5.3 Conventions for class definitions . 18
3.5.4 Conventions for service definitions . 19
4 Concepts . 20
4.1 Common concepts . 20
4.1.1 Overview . 20
4.1.2 Architectural relationships . 21
4.1.3 Fieldbus application layer structure . 23
4.1.4 Fieldbus application layer naming and addressing . 34
4.1.5 Architecture summary . 35
4.1.6 FAL service procedures . 36
4.1.7 Common FAL attributes . 37
4.1.8 Common FAL service parameters . 37
4.1.9 APDU size . 38
4.2 Type specific concepts . 38
4.2.1 Node, AP, and object dictionary . 40
4.2.2 APO ASEs . 41
5 Data type ASE . 41
5.1 General . 41
5.1.1 Overview . 41
5.1.2 Basic type overview . 42
5.1.3 Fixed-length type overview . 42
5.1.4 Constructed type overview . 43
5.1.5 Specification of user-defined data types . 43
5.1.6 Transfer of user data . 43
5.2 Formal definition of data type objects . 44
5.2.1 Data type class . 44
5.3 FAL defined data types . 45
IEC 61158-5-21:2019 © IEC 2019 – 3 –
5.3.1 Fixed-length types . 45
5.3.2 String types . 48
5.4 Data type ASE service specification . 49
6 Communication model specification . 49
6.1 ASEs . 49
6.1.1 Application process ASE . 49
6.1.2 Service data object ASE . 55
6.1.3 Process data object ASE . 65
6.1.4 Application relationship ASE . 68
6.2 ARs . 75
6.2.1 Point-to-point user-triggered confirmed client/server AREP (PTC-AR) . 75
6.2.2 M
...
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