IEC 61158-3-4:2023
(Main)Industrial communication networks - Fieldbus specifications - Part 3-4: Data-link layer service definition - Type 4 elements
Industrial communication networks - Fieldbus specifications - Part 3-4: Data-link layer service definition - Type 4 elements
IEC 61158-3-4:2023 provides common elements for basic time-critical messaging communications between devices in an automation environment. 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 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 document defines in an abstract way the externally visible services provided by the Type 4 fieldbus data-link layer in terms of
the primitive actions and events of the services;
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.
The purpose of this document is to define the services provided to
the Type 4 fieldbus application layer at the boundary between the application and data-link layers of the fieldbus reference model;
systems management at the boundary between the data-link layer and systems management of the fieldbus reference model.
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 3-4: Définition des services de la couche liaison de données - Éléments de type 4
L’IEC 61158-3-4:2023 fournit les éléments communs pour les communications de messagerie prioritaires entre les appareils d’un environnement d’automatisation. Le terme "prioritaire" est utilisé pour indiquer la présence d’une fenêtre temporelle, dans laquelle il est exigé de réaliser une ou plusieurs actions spécifiées selon un niveau défini de certitude. La non‑réalisation des actions spécifiées dans la fenêtre temporelle induit un risque de défaillance des applications qui demandent ces actions, avec les risques qui en découlent pour l’équipement, les installations et éventuellement la vie humaine.
Le présent document définit de manière abstraite les services visibles externes fournis par la couche liaison de données de bus de terrain de type 4, concernant:
les actions et événements liés aux primitives du service;
les paramètres associés à chaque action et événement de primitive, ainsi que la forme prise par ces paramètres; et
l’interrelation entre ces actions et événements, et leurs séquences valides.
Le présent document a pour objet de définir les services fournis:
la couche application de bus de terrain de type 4 à la limite entre les couches application et liaison de données du modèle de référence de bus de terrain;
la gestion-système à la frontière entre la couche liaison de données et la gestion-système du modèle de référence de bus de terrain.
General Information
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Standards Content (Sample)
IEC 61158-3-4 ®
Edition 4.0 2023-03
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 3-4: Data-link layer service definition – Type 4 elements
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IEC 61158-3-4 ®
Edition 4.0 2023-03
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –
Part 3-4: Data-link layer service definition – Type 4 elements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-6575-8
– 2 – IEC 61158-3-4:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
1.1 General . 7
1.2 Specifications . 7
1.3 Conformance . 7
2 Normative references . 8
3 Terms, definitions, symbols, abbreviated terms and conventions . 8
3.1 Reference model terms and definitions . 8
3.2 Service convention terms and definitions . 9
3.3 Data-link service terms and definitions . 10
3.4 Symbols and abbreviations . 12
3.5 Conventions . 13
4 Data-link service and concepts . 14
4.1 Overview. 14
4.1.1 General . 14
4.1.2 Overview of DL-naming (addressing) . 14
4.2 Types and classes of data-link service . 15
4.3 Functional classes . 15
4.4 Facilities of the connectionless-mode data-link service . 15
4.5 Model of the connectionless-mode data-link service . 15
4.5.1 General . 15
4.5.2 Unconfirmed request . 15
4.5.3 Confirmed request . 16
4.6 Sequence of primitives . 16
4.6.1 Constraints on sequence of primitives . 16
4.6.2 Relation of primitives at the end-points of connectionless service . 17
4.6.3 Sequence of primitives at one DLSAP. 18
4.7 Connectionless-mode data transfer functions . 18
4.7.1 General . 18
4.7.2 Types of primitives and parameters . 18
5 DL-management service . 21
5.1 Scope and inheritance . 21
5.2 Facilities of the DL-management service . 21
5.3 Model of the DL-management service . 21
5.4 Constraints on sequence of primitives . 21
5.5 Set . 22
5.5.1 Function . 22
5.5.2 Types of parameters . 22
5.6 Get . 23
5.6.1 Function . 23
5.6.2 Types of parameters . 23
5.7 Action . 23
5.7.1 Function . 23
5.7.2 Types of parameters . 24
5.7.3 Sequence of primitives . 24
5.8 Event . 25
5.8.1 Function . 25
5.8.2 Types of parameters . 25
Bibliography . 26
Figure 1 – Relationship of PhE, DLE and DLS-users . 14
Figure 2 – Confirmed and unconfirmed UNITDATA request time-sequence diagram . 17
Figure 3 – Repeated confirmed request time-sequence diagram . 17
Figure 4 – State transition diagram for sequences of primitives at one DLSAP . 18
Figure 5 – Sequence of primitives for the DLM action service . 21
Table 1 – Summary of DL-connectionless-mode primitives and parameters . 17
Table 2 – Unitdata transfer primitives and parameters . 18
Table 3 – Control-status error codes . 20
Table 4 – Summary of DL-management primitives and parameters . 22
Table 5 – DLM-Set primitive and parameters . 22
Table 6 – DLM-Get primitive and parameters . 23
Table 7 – DLM-Action primitive and parameters . 24
Table 8 – DLM-Event primitive and parameters . 25
– 4 – IEC 61158-3-4:2023 © IEC 2023
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –
Part 3-4: Data-link layer service definition –
Type 4 elements
FOREWORD
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