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

Réseaux de communication industriels - Spécifications des bus de terrain - Partie 4-19: Spécification de 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.

General Information

• Status: Published
• Publication Date: 17-Apr-2019
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.20 - Data link layer
• ICS: 35.110 - Networking
• Technical Committee: SC 65C - Industrial networks
• Drafting Committee: WG 9 - TC 65/SC 65C/WG 9
• Current Stage: PPUB - Publication issued
• Start Date: 26-Apr-2019
• Completion Date: 18-Apr-2019

Relations

• Revises: IEC 61158-4-19:2014 - Industrial communication networks - Fieldbus specifications - Part 4-19: Data-link layer protocol specification - Type 19 elements
• Effective Date: 05-Sep-2023

Standards Content (Sample)

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

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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International Standards for all electrical, electronic and related technologies.

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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

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 . 98
5.2.5 Address allocation in the master and slave . 99
5.3 Network topologies . 101
5.3.1 Introduction . 101
5.3.2 Ring topology . 102
5.3.3 Line topology . 102
5.3.4 Topology conditions of a slave device . 103
5.3.5 Topology conditions of a multi-slave device . 104
5.3.6 Topology state machine . 108
5.3.7 States of Topology state machine of slave . 109
5.3.8 Transitions of Topology state machine . 110
5.4 Redundancy of RT communication with ring topology . 112
5.4.1 Introduction . 112
5.4.2 Sequence with ring break . 112
5.4.3 Recovery of ring topology . 113
5.4.4 Recovery of P channel . 114
5.4.5 Recovery of S channel . 115
5.5 Hot-plug procedure . 115
5.5.1 Introduction . 115
5.5.2 Hot-plug state machine . 116
5.5.3 States of HP state machine . 117
5.5.4 Transitions of HP state machine . 121
5.6 Watchdog . 122
5.7 Status procedures . 122
6 Data transmission methods . 123
6.1 Overview . 123
6.2 Service channel (SVC) . 123
6.2.1 SVC handling . 123
6.2.2 Opening and closing SVC . 124
6.2.3 Selection of data block element . 124
6.2.4 Changing of data block element . 124
6.2.5 Transmission steps . 125
6.2.6 SVC valid . 126
6.2.7 Handshake bits . 126
6.2.8 Read/Write . 127
6.2.9 Busy bit . 127
6.2.10 Service channel initialization . 128
6.2.11 Reaction to SVC handshake timeout . 128
6.2.12 Reaction to error messages in the service channel . 128
...

IEC 61158-4-19 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Fieldbus specifications –
Part 4-19: Data-link layer protocol specification – Type 19 elements

Réseaux de communication industriels – Spécifications des bus de terrain –
Partie 4-19: Spécification de protocole de la couche liaison de données –
Eléments de Type 19
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
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copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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International Standards for all electrical, electronic and related technologies.
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latest edition, a corrigendum or an amendment might have been published.
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IEC 61158-4-19 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Fieldbus specifications –

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

Réseaux de communication industriels – Spécifications des bus de terrain –

Partie 4-19: Spécification de protocole de la couche liaison de données –

Eléments de Type 19
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.20; 35.110 ISBN 978-2-8322-9176-4

– 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

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 . 98
5.2.5 Address allocation in the master and slave . 99
5.3 Network topologies . 101
5.3.1 Introduction . 101
5.3.2 Ring topology . 102
5.3.3 Line topology . 102
5.3.4 Topology conditions of a slave device . 103
5.3.5 Topology conditions of a multi-slave device . 104
5.3.6 Topology state machine . 108
5.3.7 States of Topology state machine of slave . 109
5.3.8 Transitions of Topology state machine . 110
5.4 Redundancy of RT communication with ring topology . 112
5.4.1 Introduction . 112
5.4.2 Sequence with ring break . 112
5.4.3 Recovery of ring topology . 113
5.4.4 Recovery of P channel .
...