EN IEC 61158-4-4:2023

SLOVENSKI STANDARD
01-maj-2024
Nadomešča:
SIST EN IEC 61158-4-4:2019
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-4. del:
Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 4 (IEC 61158-
4-4:2023)
Industrial communication networks - Fieldbus specifications - Part 4-4: Data-link layer
protocol specification - Type 4 elements (IEC 61158-4-4:2023)
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-4: Protokollspezifikation des Data-
Link Layer (Sicherungsschicht) - Typ 4-Elemente (IEC 61158-4-4:2023)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-4:
Spécification du protocole de la couche liaison de données - Eléments de type 4 (IEC
61158-4-4:2023)
Ta slovenski standard je istoveten z: EN IEC 61158-4-4:2023
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 61158-4-4

NORME EUROPÉENNE
EUROPÄISCHE NORM April 2023
ICS 25.040.40; 35.100.20; 35.110 Supersedes EN IEC 61158-4-4:2019
English Version
Industrial communication networks - Fieldbus specifications -
Part 4-4: Data-link layer protocol specification - Type 4 elements
(IEC 61158-4-4:2023)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 4-4:
bus de terrain - Partie 4-4: Spécification du protocole de la Protokollspezifikation des Data-Link Layer
couche liaison de données - Eléments de type 4 (Sicherungsschicht) - Typ 4-Elemente
(IEC 61158-4-4:2023) (IEC 61158-4-4:2023)
This European Standard was approved by CENELEC on 2023-04-26. 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,
Türkiye 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
© 2023 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.

Ref. No. EN IEC 61158-4-4:2023 E

European foreword
The text of document 65C/1202/FDIS, future edition 4 of IEC 61158-4-4, 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 61158-4-4:2023.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2024-01-26
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2026-04-26
document have to be withdrawn
This document supersedes EN IEC 61158-4-4:2019 and all of its amendments and corrigenda (if any).
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.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 61158-4-4:2023 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 standard indicated:
IEC 61158-1 NOTE Approved as EN IEC 61158-1
IEC 61158-2 NOTE Approved as EN IEC 61158-2
IEC 61158-3-4 NOTE Approved as EN IEC 61158-3-4
IEC 61158-5-4 NOTE Approved as EN IEC 61158-5-4
IEC 61158-6-4 NOTE Approved as EN IEC 61158-6-4
IEC 61784-1-4 NOTE Approved as EN IEC 61784-1-4
IEC 61784-2-4 NOTE Approved as EN IEC 61784-2-4
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.cencenelec.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
IEC 61158-4-4 ®
Edition 4.0 2023-03
INTERNATIONAL
STANDARD
Industrial communication networks – Fieldbus specifications –

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

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-6574-1

– 2 – IEC 61158-4-4:2023 © IEC 2023
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
1.1 General . 7
1.2 Specifications . 7
1.3 Procedures . 7
1.4 Applicability . 7
1.5 Conformance . 7
2 Normative references . 8
3 Terms, definitions, symbols and abbreviated terms . 8
3.1 Reference model terms and definitions . 8
3.2 Service convention terms and definitions . 10
3.3 Terms and definitions . 11
3.4 Symbols and abbreviations . 14
3.4.1 Constants, variables, counters and queues . 14
3.4.2 Miscellaneous . 14
4 Data Link Protocol Definition . 14
4.1 Overview of the DL-protocol . 14
4.1.1 General . 14
4.1.2 Functional classes . 15
4.1.3 Functions of the DLL . 15
4.1.4 Service assumed from the PhL . 24
4.2 General structure and encoding of PhIDUs and DLPDUs, and related
elements of procedure . 26
4.2.1 PhIDU structure and encoding . 26
4.2.2 Frame check sequence . 27
4.2.3 Common DLPDU structure, encoding and elements of procedure . 28
4.3 DLPDU-specific structure, encoding and elements of procedure . 33
4.3.1 DLPDU types . 33
4.3.2 Confirmed DLPDU . 33
4.3.3 Unconfirmed DLPDU. 34
4.3.4 Acknowledge DLPDU . 36
4.3.5 Immediate-reply DLPDU . 36
4.4 DL-service elements of procedure . 37
4.4.1 Receipt of a DL-UNITDATA request primitive . 37
4.4.2 Receipt of a DL-UNITDATA response primitive . 38
4.4.3 Autonomous DLE acknowledge . 39
4.4.4 Generation of a DL-UNITDATA indication primitive . 39
4.5 Route mechanism . 40
4.5.1 Type 4-route function . 40
4.5.2 Request Type 4-route generation . 41
4.5.3 DL-route generation . 42
4.6 Link-access system . 43
4.7 Local variables, counters and queues . 44
4.7.1 V(ACPDU) – acknowledge confirmed PDU . 44
4.7.2 V(AUPDU) – acknowledge unconfirmed PDU . 44
4.7.3 V(NA) – node-address . 44

IEC 61158-4-4:2023 © IEC 2023 – 3 –
4.7.4 V(NDLE) – number of DLEs . 44
4.7.5 V(PNR) – permitted number of retries . 44
4.7.6 V(DC) – device class (simple or normal) . 44
4.7.7 V(BR) – bit rate . 44
4.7.8 V(MID) – max indication delay . 45
4.7.9 V(DMRT) – default max retry time . 45
4.7.10 Q(UR) – user request queue . 45
4.7.11 C(LAC) – link access counter. 45
4.7.12 C(LIC) – link idle counter . 45
Bibliography . 46

Figure 1 – Relationship of PhE, DLE and DLS-user. 15
Figure 2 – DLE state diagram for confirmed and unconfirmed, unacknowledged
DLPDUs . 17
Figure 3 – DLE state diagram for confirmed acknowledged DLPDUs . 18
Figure 4 – DLE state diagram for unconfirmed acknowledged DLPDUs . 19
Figure 5 – Full duplex DLE receive state diagram . 20
Figure 6 – Full duplex DLE transmit state diagram .
...