EN IEC 61158-4-19:2019

Industrial communication networks - Fieldbus specifications - Part 4 -19: Data-link layer protocol specification - Type 19 elements

IEC 61158-4-19:2019 specifies procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data-link service provider and the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. This fourth edition cancels and replaces the third edition published in 2014 and constitutes a technical revision. The main changes are: •improving the hotplug and redundancy features; •improving the phase switching and the error handling; •editorial improvements

Industrielle Kommunikationsnetze - Feldbusse - Teil 4-19: Protokollspezifikation des Data-Link Layer (Sicherungsschicht) - Typ 19-Elemente

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-19: Spécification du protocole de la couche liaison de données - Eléments de type 19

IEC 61158-4-19:2019 La couche liaison de données assure les communications de messagerie prioritaires de base entre les appareils d’un environnement d’automatisation. Ce protocole offre à toutes les entités de liaison de données participantes a) des opportunités de communication cyclique à démarrage synchrone, selon un ordre préétabli, et b) de manière asynchrone cyclique ou acyclique, tel que requis à chaque cycle par chacune de ces entités de liaison de données. Ainsi, ce protocole peut être caractérisé comme un protocole qui offre un accès cyclique et acyclique asynchrone, mais avec un redémarrage synchrone de chaque cycle.

Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-19. del: Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 19 (IEC 61158-4-19:2019)

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 in b) na cikličen ali necikličen asinhroni način, kot posamezne entitete podatkovnih povezav zahtevajo v vsakem ciklu. 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: 20-Jun-2019
• Withdrawal Date: 22-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 61158-4-19:2019 - Industrial communication networks - Fieldbus specifications - Part 4 -19: Data-link layer protocol specification - Type 19 elements (IEC 61158-4-19:2019)

Relations

• Replaces: EN 61158-4-19:2014 - Industrial communication networks - Fieldbus specifications - Part 4-19: Data-link layer protocol specification - Type 19 elements
• Effective Date: 07-May-2019

Standards Content (Sample)

SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 61158-4-19:2015
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-19. del:
Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 19 (IEC 61158
-4-19:2019)
Industrial communication networks - Fieldbus specifications - Part 4 -19: Data-link layer
protocol specification - Type 19 elements (IEC 61158-4-19:2019)
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-19: Protokollspezifikation des
Data Link Layer (Sicherungsschicht) - Typ 19-Elemente (IEC 61158-4-19:2019)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-19:
Spécification du protocole de la couche liaison de données - Eléments de type 19 (IEC
61158-4-19:2019)
Ta slovenski standard je istoveten z: EN IEC 61158-4-19:2019
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 61158-4-19

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
Supersedes EN 61158-4-19:2014
ICS 25.040.40; 35.100.20; 35.110
English Version
Industrial communication networks - Fieldbus specifications -
Part 4 -19: Data-link layer protocol specification - Type 19
elements
(IEC 61158-4-19:2019)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 4-19:
bus de terrain - Partie 4-19: Spécification du protocole de la Protokollspezifikation des Data Link Layer
couche liaison de données - Eléments de type 19 (Sicherungsschicht) - Typ 19-Elemente
(IEC 61158-4-19:2019) (IEC 61158-4-19:2019)
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 61158-4-19:2019 E

European foreword
The text of document 65C/946/FDIS, future edition 4 of IEC 61158-4-19, 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-
19:2019.
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 61158-4-19:2014.
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 61158-4-19:2019 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 61131 series NOTE Harmonized as EN 61131 series
IEC 61158-1 NOTE Harmonized as EN 61158-1
IEC 61158-3-19 NOTE Harmonized as EN 61158-3-19
IEC 61158-5-16 NOTE Harmonized as EN 61158-5-16
IEC 61158-5-19 NOTE Harmonized as EN 61158-5-19
IEC 61158-6-16 NOTE Harmonized as EN 61158-6-16
IEC 61158-6-19 NOTE Harmonized as EN 61158-6-19
IEC 61784-1 NOTE Harmonized as EN 61784-1
IEC 61784-2 NOTE Harmonized as EN 61784-2
IEC 61800-7 series NOTE Harmonized as EN 61800-7 series

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 61158-4-16 2007 Industrial communication networks - EN 61158-4-16 2008
Fieldbus specifications - Part 4-16: Data-
link layer protocol specification - Type 16
elements
ISO 8601 -  Data elements and interchange formats – - -
Information interchange – Representation
of dates and times
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/IEEE 8802--  Information technology – - -
3 Telecommunications and information
exchange between systems – Local and
metropolitan area networks – Specific
requirements – Part 3: Standard for
Ethernet
IEEE Std 802.3 -  IEEE Standard for Information technology - -
– Telecommunications and information
exchange between systems – Local and
metropolitan area networks – Specific
requirements – Part 3: Carrier Sense
Multiple Access with Collision Detection
(CSMA/CD) Access Method and Physical
Layer Specifications
RFC 879 - The TCP - Maximum Segment Size and
Related Topics
IEC 61158-4-19 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications –

Part 4-19: Data-link layer protocol specification – Type 19 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-6776-9

– 2 – IEC 61158-4-19:2019 © IEC 2019
CONTENTS
FOREWORD . 24
INTRODUCTION . 26
1 Scope . 28
1.1 General . 28
1.2 Specifications . 28
1.3 Procedures . 28
1.4 Applicability . 28
1.5 Conformance . 29
2 Normative references . 29
3 Terms, definitions, symbols, acronyms, abbreviations and conventions . 29
3.1 Reference model terms and definitions . 29
3.2 Additional Type 19 terms and definitions . 30
3.3 Symbols . 33
3.4 Acronyms and abbreviations . 34
3.5 Additional conventions . 35
4 DL-protocol overview . 35
4.1 Overview . 35
4.2 General DLPDU identification . 37
4.2.1 Introduction . 37
4.2.2 Destination address (Dest MAC) . 37
4.2.3 Source address (Src MAC) . 37
4.2.4 EtherType . 37
4.3 General DLPDU structure . 37
4.3.1 Introduction . 37
4.3.2 DLPDU header . 38
4.3.3 DLPDU payload . 38
4.4 DLPDU header . 38
4.4.1 Introduction . 38
4.4.2 DLPDU type. 38
4.5 MDT DLPDU . 39
4.5.1 MDT MST field summary . 39
4.5.2 Evaluation of MDT header in the slaves . 39
4.5.3 MDT type . 40
4.5.4 MDT phase . 40
4.5.5 MDT CRC . 40
4.5.6 MDT payload during initialization . 40
4.5.7 MDT payload in normal operation (CP4) . 44
4.6 AT DLPDU . 51
4.6.1 AT header field summary . 51
4.6.2 Evaluation of AT header in the slaves . 51
4.6.3 AT type . 52
4.6.4 AT phase . 52
4.6.5 AT CRC . 52
4.6.6 AT Payload during initialization . 52
4.6.7 AT payload in CP4 . 56
4.7 Mechanisms of connections . 62
4.7.1 Introduction . 62

IEC 61158-4-19:2019 © IEC 2019 – 3 –
4.7.2 Configuration of connections . 63
4.7.3 Connection control . 64
4.7.4 Producer state machine . 66
4.7.5 Consumer state machine . 68
5 DL management . 72
5.1 Overview . 72
5.2 Initialization of cyclic communication. 72
5.2.1 Introduction .
...

SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 61158-4-19:2015
Industrijska komunikacijska omrežja - Specifikacije za procesna vodila - 4-19. del:
Specifikacija protokola na ravni podatkovnih povezav - Elementi tipa 19 (IEC 61158
-4-19:2019)
Industrial communication networks - Fieldbus specifications - Part 4 -19: Data-link layer
protocol specification - Type 19 elements (IEC 61158-4-19:2019)
Industrielle Kommunikationsnetze - Feldbusse - Teil 4-19: Protokollspezifikation des
Data Link Layer (Sicherungsschicht) - Typ 19-Elemente (IEC 61158-4-19:2019)
Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-19:
Spécification du protocole de la couche liaison de données - Eléments de type 19 (IEC
61158-4-19:2019)
Ta slovenski standard je istoveten z: EN IEC 61158-4-19:2019
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 61158-4-19

NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2019
Supersedes EN 61158-4-19:2014
ICS 25.040.40; 35.100.20; 35.110
English Version
Industrial communication networks - Fieldbus specifications -
Part 4 -19: Data-link layer protocol specification - Type 19
elements
(IEC 61158-4-19:2019)
Réseaux de communication industriels - Spécifications des Industrielle Kommunikationsnetze - Feldbusse - Teil 4-19:
bus de terrain - Partie 4-19: Spécification du protocole de la Protokollspezifikation des Data Link Layer
couche liaison de données - Eléments de type 19 (Sicherungsschicht) - Typ 19-Elemente
(IEC 61158-4-19:2019) (IEC 61158-4-19:2019)
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 61158-4-19:2019 E

European foreword
The text of document 65C/946/FDIS, future edition 4 of IEC 61158-4-19, 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-
19:2019.
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 61158-4-19:2014.
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 61158-4-19:2019 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 61131 series NOTE Harmonized as EN 61131 series
IEC 61158-1 NOTE Harmonized as EN 61158-1
IEC 61158-3-19 NOTE Harmonized as EN 61158-3-19
IEC 61158-5-16 NOTE Harmonized as EN 61158-5-16
IEC 61158-5-19 NOTE Harmonized as EN 61158-5-19
IEC 61158-6-16 NOTE Harmonized as EN 61158-6-16
IEC 61158-6-19 NOTE Harmonized as EN 61158-6-19
IEC 61784-1 NOTE Harmonized as EN 61784-1
IEC 61784-2 NOTE Harmonized as EN 61784-2
IEC 61800-7 series NOTE Harmonized as EN 61800-7 series

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 61158-4-16 2007 Industrial communication networks - EN 61158-4-16 2008
Fieldbus specifications - Part 4-16: Data-
link layer protocol specification - Type 16
elements
ISO 8601 -  Data elements and interchange formats – - -
Information interchange – Representation
of dates and times
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/IEEE 8802--  Information technology – - -
3 Telecommunications and information
exchange between systems – Local and
metropolitan area networks – Specific
requirements – Part 3: Standard for
Ethernet
IEEE Std 802.3 -  IEEE Standard for Information technology - -
– Telecommunications and information
exchange between systems – Local and
metropolitan area networks – Specific
requirements – Part 3: Carrier Sense
Multiple Access with Collision Detection
(CSMA/CD) Access Method and Physical
Layer Specifications
RFC 879 - The TCP - Maximum Segment Size and
Related Topics
IEC 61158-4-19 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications –

Part 4-19: Data-link layer protocol specification – Type 19 elements

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-6776-9

– 2 – IEC 61158-4-19:2019 © IEC 2019
CONTENTS
FOREWORD . 24
INTRODUCTION . 26
1 Scope . 28
1.1 General . 28
1.2 Specifications . 28
1.3 Procedures . 28
1.4 Applicability . 28
1.5 Conformance . 29
2 Normative references . 29
3 Terms, definitions, symbols, acronyms, abbreviations and conventions . 29
3.1 Reference model terms and definitions . 29
3.2 Additional Type 19 terms and definitions . 30
3.3 Symbols . 33
3.4 Acronyms and abbreviations . 34
3.5 Additional conventions . 35
4 DL-protocol overview . 35
4.1 Overview . 35
4.2 General DLPDU identification . 37
4.2.1 Introduction . 37
4.2.2 Destination address (Dest MAC) . 37
4.2.3 Source address (Src MAC) . 37
4.2.4 EtherType . 37
4.3 General DLPDU structure . 37
4.3.1 Introduction . 37
4.3.2 DLPDU header . 38
4.3.3 DLPDU payload . 38
4.4 DLPDU header . 38
4.4.1 Introduction . 38
4.4.2 DLPDU type. 38
4.5 MDT DLPDU . 39
4.5.1 MDT MST field summary . 39
4.5.2 Evaluation of MDT header in the slaves . 39
4.5.3 MDT type . 40
4.5.4 MDT phase . 40
4.5.5 MDT CRC . 40
4.5.6 MDT payload during initialization . 40
4.5.7 MDT payload in normal operation (CP4) . 44
4.6 AT DLPDU . 51
4.6.1 AT header field summary . 51
4.6.2 Evaluation of AT header in the slaves . 51
4.6.3 AT type . 52
4.6.4 AT phase . 52
4.6.5 AT CRC . 52
4.6.6 AT Payload during initialization . 52
4.6.7 AT payload in CP4 . 56
4.7 Mechanisms of connections . 62
4.7.1 Introduction . 62

IEC 61158-4-19:2019 © IEC 2019 – 3 –
4.7.2 Configuration of connections . 63
4.7.3 Connection control . 64
4.7.4 Producer state machine . 66
4.7.5 Consumer state machine . 68
5 DL management . 72
5.1 Overview . 72
5.2 Initialization of cyclic communication. 72
5.2.1 Introduction . 72
5.2.2 Communication phases (CP) . 73
5.2.3 Switching of communication phases (CPS) . 86
5.2.4 Communication Version .
...