EN IEC 61158-3-21:2019

Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements

IEC 61158-3-21:2019 defines in an abstract way the externally visible service provided by the Type 21 fieldbus data-link layer in terms of the primitive actions and events of the service; the parameters associated with each primitive action and event, and the form which they take and the interrelationship between these actions and events, and their valid sequences. It cancels and replaces the first edition published in 2010 and constitutes a technical revision. The main changes are listed below: •Added Network Control Message Type; •Miscellaneous editorial corrections.

Industrielle Kommunikationsnetze - Feldbusse - Teil 3-21: Dienstfestlegungen des Data-Link Layer (Sicherungsschicht) - Typ 21-Elemente

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 3-21: Définition des services de couche liaison de données - Eléments de Type 21

L’IEC 61158-3-21:2019 fournit les éléments communs pour les communications de messagerie de base à temps critique entre des dispositifs dans un environnement d'automation. Le terme "à temps critique" dans ce contexte signifie la communication hiérarchisée par priorité et déterministe dans le temps sans collision en duplex intégral, dont l'une ou plusieurs actions spécifiées sont tenues d'être parachevées avec un certain niveau défini de certitude. Le manquement à parachever les actions spécifiées dans les limites du délai requis 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. La présente norme définit de manière abstraite le service visible de l'extérieur fourni par la couche liaison de données de type 21 en termes: a) des actions et événements primitifs du service; b) des paramètres associés à chaque action primitive et événement primitif, et la forme qu'ils prennent; et c) des interrelations entre ces actions et événements, et leurs séquences valides.

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 3-21. del: Definicija opravil na ravni podatkovnih povezav - Elementi tipa 21 (IEC 61158-3-21:2019)

Ta dokument določa skupne elemente za osnovne časovno kritične sporočilne komunikacije med napravami v avtomatizacijskem okolju. Izraz »časovno kritičen« v tem okviru pomeni prednostno časovno deterministično komunikacijo brez kolizije in s popolno hkratnostjo, v okviru katere se zahteva dokončanje enega ali več opredeljenih dejanj z določeno stopnjo gotovosti. Zaradi neuspešnega dokončanja opredeljenih dejanj v zahtevanem času 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 nivo podatkovnih povezav tipa 21 v zvezi s/z: a) primitivnimi dejanji in dogodki opravila; b) parametri, povezanimi z vsakim primitivnim dejanjem in dogodkom, ter obliko, ki jo prevzamejo; in c) medsebojno povezavo med temi dejanji in dogodki ter njihovimi veljavnimi zaporedji. Namen tega dokumenta je opredeliti opravila, ki se zagotavljajo za: – aplikacijski nivo tipa 21 na meji med aplikacijskim nivojem in nivojem podatkovnih povezav referenčnega modela procesnih vodil; – vodenje sistemov na meji med nivojem podatkovnih povezav in vodenje sistemov referenčnega modela procesnih vodil.

General Information

• Status: Published
• Publication Date: 20-Jun-2019
• Withdrawal Date: 28-May-2022
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.20 - Data link layer
• ICS: 35.110 - Networking
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65C - IEC_SC_65C
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 21-Jun-2019
• Completion Date: 21-Jun-2019
• Ref Project: SIST EN IEC 61158-3-21:2019 - Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements (IEC 61158-3-21:2019)

Relations

• Replaces: EN 61158-3-21:2012 - Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer service definition - Type 21 elements
• Effective Date: 07-May-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 61158-3-21:2012
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 3-21. del:
Definicija opravil na ravni podatkovnih povezav - Elementi tipa 21 (IEC 61158-3-
21:2019)
Industrial communication networks - Fieldbus specifications - Part 3-21: Data-link layer
service definition - Type 21 elements (IEC 61158-3-21:2019)
Industrielle Kommunikationsnetze - Feldbusse - Teil 3-21: Dienstfestlegungen des Data
Link Layer (Sicherungsschicht) - Typ 21-Elemente (IEC 61158-3-21:2019)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 3-21:
Définition des services de couche liaison de données - Eléments de Type 21 (IEC 61158-
3-21:2019)
Ta slovenski standard je istoveten z: EN IEC 61158-3-21:2019
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.100.20 Podatkovni povezovalni sloj Data link layer
35.110 Omreževanje Networking
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 61158-3-21

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
ICS 25.040.40; 35.100.20; 35.110 Supersedes EN 61158-3-21:2012
English Version
Industrial communication networks - Fieldbus specifications -
Part 3-21: Data-link layer service definition - Type 21 elements
(IEC 61158-3-21:2019)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 3-21:
bus de terrain - Partie 3-21: Définition des services de Dienstfestlegungen des Data Link Layer
couche liaison de données - Eléments de Type 21 (Sicherungsschicht) - Typ 21-Elemente
(IEC 61158-3-21:2019) (IEC 61158-3-21:2019)
This European Standard was approved by CENELEC on 2019-05-29. 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 61158-3-21:2019 E

European foreword
The text of document 65C/945/FDIS, future edition 2 of IEC 61158-3-21, 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) 2020-02-29
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-29
document have to be withdrawn
This document supersedes EN 61158-3-21:2012.
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 61158-3-21:2019 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 61158-5-21:2019 NOTE Harmonized as EN IEC 61158-5-21:2019 (not modified)
IEC 61784-2:2019 NOTE Harmonized as EN IEC 61784-2:2019 (not modified)
IEC 61918:2018 NOTE Harmonized as EN IEC 61918:2018 (not modified)

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 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 10731 -  Information technology - Open Systems - -
Interconnection - Basic Reference Model -
Conventions for the definition of OSI
services
ISO/IEC/IEEE 8802--  Standard for Ethernet - -
IEC 61158-3-21 ®
Edition 2.0 2019-04
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –

Part 3-21: Data-link layer service definition – Type 21 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-6790-5

– 2 – IEC 61158-3-21:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
1.1 Overview. 8
1.2 Specifications . 8
1.3 Conformance . 8
2 Normative references . 9
3 Terms, definitions, symbols, abbreviations, and conventions . 9
3.1 Reference model terms and definitions . 9
3.2 Service convention terms and definitions . 11
3.3 Common data-link service terms and definitions . 12
3.4 Additional Type 21 data-link specific definitions . 15
3.5 Common symbols and abbreviations . 15
3.6 Additional Type 21 symbols and abbreviations . 16
3.7 Common conventions . 16
3.8 Additional Type 21 conventions. 17
4 Data-link layer services and concepts . 17
4.1 General . 17
4.1.1 Overview . 17
4.1.2 Overview of full duplex flow control . 17
4.1.3 Types and classes of DL-layer service . 18
4.2 Detailed description of the data service . 21
4.2.1 General . 21
4.2.2 Sequence of primitives . 21
4.2.3 Transmit/receive data . 22
4.3 Detailed description of the sporadic data service . 23
4.3.1 General . 23
4.3.2 Sequence of Primitive . 24
4.3.3 Transmit/receive sporadic data . 24
4.4 Detailed description of network control message service . 25
4.4.1 General . 25
4.4.2 Sequence of Primitives . 25
4.4.3 Transmit/receive network control message . 25
5 Data-link management services . 28
5.1 General . 28
5.2 Data link management service (DLMS) facilities . 28
5.3 Data link management service (DLMS) . 28
5.3.1 Overview . 28
5.3.2 Reset . 29
5.3.3 Set-value . 29
5.3.4 Get-value . 29
5.3.5 SAP-allocation . 29
5.3.6 SAP-deallocation . 29
5.3.7 Get-SAP information . 29
5.3.8 Get-diagnostic-information . 29
5.3.9 Event . 29

IEC 61158-3-21:2019 © IEC 2019 – 3 –
5.3.10 Get-path . 29
5.4 Overview of interactions . 29
5.5 Detailed specification of service and interactions . 31
5.5.1 Reset . 31
5.5.2 Set-value . 31
5.5.3 Get-value . 32
5.5.4 SAP-allocation . 33
5.5.5 SAP-deallocation . 34
5.5.6 Get-SAP-information . 35
5.5.7 Get-diagnostic-information . 36
5.5.8 Event . 37
5.5.9 Get-path . 38
6 MAC control service . 39
6.1 General . 39
6.2 MAC control service . 39
6.2.1 Overview . 39
6.2.2 MAC-reset .
...