Industrial communication networks - Fieldbus specifications - Part 4-24: Data-link layer protocol specification - Type 24 elements (IEC 61158-4-24:2019)

The data-link layer provides basic time-critical messaging communications between devices in an automation environment. This protocol provides communication opportunities to all participating data- link entities: a) in a synchronously-starting cyclic manner, according to a pre-established schedule, or b) in an acyclic manner, as requested by each of those data-link entities. Thus this protocol can be characterized as one which provides cyclic and acyclic access asynchronously but with a synchronous restart of each cycle.

Industrielle Kommunikationsnetze - Feldbusse - Teil 4-24: Protokollspezifikation des Data Link Layer (Sicherungsschicht) - Typ 24-Elemente (IEC 61158-4-24:2019)

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-24: Spécification du protocole de la couche liaison de données - Éléments de type 24 (IEC 61158-4-24:2019)

L'IEC-61158-4-24:2019 spécifie
a) les procédures de transfert en temps opportun des données et des informations de commande entre une entité utilisateur de liaison de données et une entité utilisateur homologue et, parmi les entités de liaison de données formant le fournisseur de services distribués de liaison de données;
b) les procédures pour donner des opportunités de communication à toutes les entités DL participantes, séquentiellement et de manière cyclique pour le transfert déterministe et synchronisé à intervalles cycliques pouvant aller jusqu'à 64 ms;
c) les procédures pour donner les opportunités de communication disponibles pour la transmission de données prioritaires ainsi que pour la transmission de données non prioritaires, sans nuire à la transmission de données prioritaire;
d) les procédures pour donner des opportunités de communication cyclique et acyclique pour la transmission de données prioritaires avec accès hiérarchisés;
e) les procédures pour donner des opportunités de communication selon le contrôle d'accès au support physique normalisé par l'ISO/IEC/IEEE 8802 3, avec des dispositions pour les nœuds à ajouter ou à retirer lors du fonctionnement normal;
f) la structure des DLPDU de bus de terrain utilisées par le protocole du présent document pour le transfert des données et des informations de commande, et leur représentation sous forme d'unités de données d'interface physique.

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-24. del: Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 24 (IEC 61158-4-24:2019)

Nivo podatkovnih povezav omogoča osnovne časovno kritične sporočilne komunikacije med napravami v avtomatizacijskem okolju. Ta protokol omogoča komunikacijske priložnosti vsem sodelujočim entitetam podatkovnih povezav a) na cikličen način s sinhronim začetkom v skladu z vnaprej določenim razporedom ali b) na necikličen način, kot zahtevajo posamezne entitete podatkovnih povezav. Tako lahko ta protokol opredelimo kot protokol, ki asinhrono omogoča cikličen in acikličen dostop s sinhronim ponovnim zagonom vsakega cikla.

General Information

Status
Published
Publication Date
10-Oct-2019
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jul-2019
Due Date
05-Sep-2019
Completion Date
11-Oct-2019

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SLOVENSKI STANDARD
SIST EN IEC 61158-4-24:2019
01-november-2019
Nadomešča:
SIST EN 61158-4-24:2015
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-24. del:
Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 24 (IEC 61158
-4-24:2019)
Industrial communication networks - Fieldbus specifications - Part 4-24: Data-link layer
protocol specification - Type 24 elements (IEC 61158-4-24:2019)
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-24: Protokollspezifikation des
Data Link Layer (Sicherungsschicht) - Typ 24-Elemente (IEC 61158-4-24:2019)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-24:
Spécification du protocole de la couche liaison de données - Éléments de type 24 (IEC
61158-4-24:2019)
Ta slovenski standard je istoveten z: EN IEC 61158-4-24:2019
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
SIST EN IEC 61158-4-24:2019 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN IEC 61158-4-24:2019


EUROPEAN STANDARD EN IEC 61158-4-24

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2019
Supersedes EN 61158-4-24:2014
ICS 25.040.40; 35.100.20; 35.110
English Version
Industrial communication networks - Fieldbus specifications -
Part 4-24: Data-link layer protocol specification - Type 24
elements
(IEC 61158-4-24:2019)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 4-24:
bus de terrain - Partie 4-24: Spécification du protocole de la Protokollspezifikation des Data Link Layer
couche liaison de données - Éléments de type 24 (Sicherungsschicht) - Typ 24-Elemente
(IEC 61158-4-24:2019) (IEC 61158-4-24:2019)
This European Standard was approved by CENELEC on 2019-05-23. 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 61158-4-24:2019 E

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SIST EN IEC 61158-4-24:2019
EN IEC 61158-4-24:2019 (E)
European foreword
The text of document 65C/946/FDIS, future edition 2 of IEC 61158-4-24, 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 EN IEC 61158-4-
24:2019.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2020-02-23
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2022-05-23
document have to be withdrawn

This document supersedes EN 61158-4-24:2014.
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 61158-4-24:2019 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 NOTE Harmonized as EN 61158-1
IEC 61784-1 NOTE Harmonized as EN 61784-1
IEC 61784-2 NOTE Harmonized as EN 61784-2

2

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SIST EN IEC 61158-4-24:2019
EN IEC 61158-4-24:2019 (E)
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
IEC 61158-2 -  Industrial communication networks - EN 61158-2 -
Fieldbus specifications - Part 2: Physical
layer specification and service definition
IEC 61158-3-24 2014 Industrial communication networks - EN 61158-3-24 2014
Fieldbus specifications - Part 3-24: Data-
link layer service definition - Type 24
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 9899 -  Information technology - Programming - -
languages - C
ISO/IEC 10731 -  Information technology - Open Systems - -
Interconnection - Basic Reference Model -
Conventions for the definition of OSI
services
ISO/IEC 13239 2002 Information technology_- - -
Telecommunications and information
exchange between systems_- High-level
data link control (HDLC) procedures
ISO/IEC 19501 2005 Information technology - Open Distributed - -
Processing - Unified Modeling Language
(UML) Version 1.4.2
ISO/IEC/IEEE 8802-2017 Standard for Ethernet - -
3


3

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SIST EN IEC 61158-4-24:2019




IEC 61158-4-24

®


Edition 2.0 2019-04




INTERNATIONAL



STANDARD








colour

inside










Industrial communication networks – Fieldbus specifications –

Part 4-24: Data-link layer protocol specification – Type 24 elements



























INTERNATIONAL

ELECTROTECHNICAL


COMMISSION





ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-6779-0




  Warning! Make sure that you obtained this publication from an authorized distributor.


® Registered trademark of the International Electrotechnical Commission

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CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 10
1.1 General . 10
1.2 Specifications . 10
1.3 Procedures . 10
1.4 Applicability . 11
1.5 Conformance . 11
2 Normative references . 11
3 Terms, definitions, symbols, abbreviations and conventions . 12
3.1 Reference model terms and definitions . 12
3.2 Service convention terms and definitions . 13
3.3 Common terms and definitions . 13
3.4 Symbols and abbreviations . 16
3.5 Additional Type 24 symbols and abbreviations . 17
3.6 Common Conventions . 17
3.7 Additional Type 24 conventions . 18
3.7.1 Primitive conventions . 18
3.7.2 State machine conventions . 18
4 Overview of DL-protocol . 19
4.1 Characteristic feature of the DL-protocol . 19
4.2 DL layer component . 20
4.2.1 Cyclic transmission control (CTC) . 21
4.2.2 Send Receive Control (SRC) . 21
4.2.3 DL-management . 21
4.3 Timing sequence. 21
4.3.1 Overview . 21
4.3.2 Cyclic transmission mode . 21
4.3.3 Acyclic transmission mode . 29
4.4 Service assumed from the PhL . 30
4.4.1 General requirement . 30
4.4.2 DL_Symbols . 30
4.4.3 Assumed primitives of the PhS . 30
4.5 Local parameters, variables, counters, timers . 30
4.5.1 Overview . 30
4.5.2 Variables, parameters, counters and timers to support DLE function . 31
5 DLPDU structure . 35
5.1 Overview . 35
5.1.1 Transfer syntax for bit sequences . 35
5.1.2 Data type encodings . 36
5.1.3 Frame format . 36
5.2 Basic format DLPDU structure . 36
5.2.1 General . 36
5.2.2 Synchronous frame . 40
5.2.3 Output data or Input data frame . 40
5.2.4 Delay measurement start frame . 41

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5.2.5 Delay measurement frame . 41
5.2.6 Message token frame . 42
5.2.7 Status frame . 42
5.2.8 Cycle Information frame . 43
5.2.9 Message frame . 44
5.3 Short format DLPDU structure. 45
5.3.1 General . 45
5.3.2 Synchronous frame . 47
5.3.3 Output data or Input data frame . 48
5.3.4 Message frame . 49
6 DLE element procedure . 49
6.1 Overview . 49
6.2 Cyclic transmission control sublayer . 49
6.2.1 General . 49
6.2.2 DLS-user interface . 49
6.2.3 Protocol machines in CTC . 50
6.2.4 CTC-DLM interface . 101
6.3 Send Receive Control . 102
6.3.1 General . 102
6.3.2 SRC-CTC interface . 103
6.3.3 Detailed specification of SRC . 104
6.3.4 SRC-DLM interface . 108
7 DL-management layer (DLM) . 109
7.1 Overview . 109
7.2 Primitive definitions . 109
7.2.1 Primitives exchanged between DLMS-user and DLM . 109
7.2.2 Parameters used with DLM primitives . 110
7.3 DLM protocol machine . 110
7.3.1 C1 master . 110
7.3.2 Slave and C2 master . 115
7.4 Functions . 119
Bibliography . 122


Figure 1 – Data-link layer component . 21
Figure 2 – Timing chart of fixed-width time slot type cyclic communication . 22
Figure 3 – Timing chart of configurable time slot type cyclic communication . 24
Figure 4 – Schematic diagram of cyclic event occurrence . 26
Figure 5 – Timing relationship between cyclic transmission and data processing . 29
Figure 6 – Timing chart example of acyclic communication . 29
Figure 7 – Basic format DLPDU structure. 37
Figure 8 – Short format DLPDU structure . 45
Figure 9 – The state diagram of the C1 master for fixed-width time slot . 51
Figure 10 – The state diagram of the C2 master for fixed-width time slot . 58
Figure 11 – The state diagram of the slave for fixed-width time slot . 62
Figure 12 – The state diagram of the C1 master for configurable time slot . 65
Figure 13 – The state diagram of the C2 master for configurable time slot . 74
Figure 14 – The state diagram of slave for configurable time slot . 77

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Figure 15 – The state diagram of message initiator for basic format . 82
Figure 16 – The state diagram of message responder for basic format . 86
Figure 17 – The state diagram of message initiator for short format . 90
Figure 18 – The state diagram of message responder for short format . 94
Figure 19 – The state diagram of the acyclic transmission protocol machine . 100
Figure 20 – Internal architecture of one-port SRC . 104
Figure 21 – Internal architecture of multi-port SRC . 104
Figure 22 – Internal architecture of serializer . 105
Figure 23 – Internal architecture of deserializer . 106
Figure 24 – State diagram of the C1 master DLM . 111
Figure 25 – State diagram of the Slave and the C2 master DLM . 116

Table 1 – State transition descriptions . 18
Table 2 – Description of state machine elements . 19
Table 3 – Conventions used in state machines . 19
Table 4 – Characteristic features of the fieldbus data-link protocol . 20
Table 5 – List of the values of the variable Cyc_sel . 31
Table 6 – List of the values of the variable Tunit . 32
Table 7 – List of the values of the variable PDUType . 33
Table 8 – List of the values of the variable SlotType . 34
Table 9 – Transfer syntax for bit sequences . 36
Table 10 – Bit order . 36
Table 11 – Destination and Source address format . 37
Table 12 – Station address . 37
Table 13 – Extended address . 38
Table 14 – Message control field format (Information transfer format) . 38
Table 15 – Message control field format (Supervisory format) . 38
Table 16 – The list of Supervisory function bits . 39
Table 17 – Frame type and data length format . 39
Table 18 – The list of Frame type. 39
Table 19 – Data format of the Synchronous frame . 40
Table 20 – The field list of the Synchronous frame . 40
Table 21 – Data format of the Output data or the Input data frame . 40
Table 22 – The field list of the Output data or the Input data frame . 41
Table 23 – Data format of Delay measurement start frame . 41
Table 24 – The field list of Delay measurement start frame . 41
Table 25 – Data format of Delay measurement frame. 42
Table 26 – The field list of Delay measurement frame . 42
Table 27 – Data format of Status frame. 42
Table 28 – The field list of Status frame . 43
Table 29 – The list of the DLE status . 43
Table 30 – The list of Repeater status . 43
Table 31 – Data format of Delay measurement frame. 44

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Table 32 – The field list of Cycle Information frame. 44
Table 33 – Data format of Message frame . 44
Table 34 – The field list of Message frame . 45
Table 35 – Range of Station address field. 46
Table 36 – Control field format (I/O data exchange format) . 46
Table 37 – Control field format (Message format) . 46
Table 38 – The field list of Message format . 47
Table 39 – Data format of the Synchronous frame . 47
Table 40 – The field list of the Synchronous frame . 48
Table 41 – Data format of the Output data frame . 48
Table 42 – The field list of the Output data frame . 48
Table 43 – Data format of the Input data frame . 48
Table 44 – The field list of the Input data frame . 48
Table 45 – Primitives and parameters for the DLS-user interface issued by the DLS-
user . 49
Table 46 – Primitives and parameters for the DLS-user interface issued by the CTC . 50
Table 47 – The state table of the C1 master for fixed-width time slot . 52
Table 48 – The state table of the C2 master for fixed-width time slot . 59
Table 49 – The state table of the slave for fixed-width time slot . 63
Table 50 – The state table of the C1 master for configurable time slot . 66
Table 51 – The state table of the C2 master for configurable time slot . 75
Table 52 – The state table of slave for configurable time slot . 78
Table 53 – The list of functions used by cyclic transmission machine . 79
Table 54 – The state table of message initiator for basic format . 82
Table 55 – The state table of message responder for basic format . 86
Table 56 – The state table of message initiator for short format . 90
Table 57 – The state table of message responder for short format . 95
Table 58 – List of functions used by the message segmentation machine . 99
Table 59 – The state table of the acyclic transmission protocol machine . 101
Table 60 – The list of functions used acyclic transmission protocol machine . 101
Table 61 – Primitives and parameters exchanged between CTC and DLM . 102
Table 62 – Error event primitive and parameters . 102
Table 63 – primitives and parameters for SRC-CTC interface . 103
Table 64 – Send frame primitive and parameters . 103
Table 65 – Receive frame primitives and parameters . 104
Table 66 – Primitives and parameters exchanged between SRC and DLM . 108
Table 67 – Get value primitive and parameters . 109
Table 68 – Error event primitive and parameters . 109
Table 69 – The list of primitives and parameters (DLMS-user source) . 110
Table 70 – The list of primitives and parameters (DLM source) . 110
Table 71 – State table of the C1 Master DLM . 112
Table 72 – State table of the Slave and the C2 master DLM . 117
Table 73 – The list of the functions used by DLM protocol machine . 120

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INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________

INDUSTRIAL COMMUNICATION NETWORKS –
FIELDBUS SPECIFICATIONS –

Part 4-24: Data-link layer protocol specification –
Type 24 elements

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC
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