IEC 61784-2:2019
(Main)Industrial communication networks - Profiles - Part 2: Additional fieldbus profiles for real-time networks based on ISO/IEC/IEEE 8802-3
Industrial communication networks - Profiles - Part 2: Additional fieldbus profiles for real-time networks based on ISO/IEC/IEEE 8802-3
IEC 61784-2:2019 specifies the performance indicators supporting classification schemes for Real-Time Ethernet (RTE) requirements; the profiles and related network components based on ISO/IEC 8802-3 or IEEE 802.3, IEC 61158 series, and IEC 61784-1 and the RTE solutions that are able to run in parallel with ISO/IEC 8802-3 or IEEE 802.3 based applications. These communication profiles are called Real-Time Ethernet communication profiles. This fourth edition cancels and replaces the third edition published in 2014 and constitutes a technical revision. The main changes are:
• update of reference from ISO/IEC 8802-3 to ISO/IEC/IEEE 8802-3;
• update of the dated references to the IEC 61158 series, to IEC 61784 1, to the IEC 61784-5 series and to IEC 61918 throughout the document;
• update of selection tables for CPF 2, CPF 3, CPF 4, CPF 8 and CPF 17;
• CPF3: update of the requirements for all conformance classes;
• CPF3: updated timing requirements for IO devices;
• CPF3: refining the added application classes;
• addition of a new Communication Profile Family – CPF 20 in Clause 21;
• addition of a new Communication Profile Family – CPF 21 in Clause 22
Réseaux de communication industriels - Profils - Partie 2 : Profils de bus de terrain supplémentaires pour les réseaux en temps réel fondés sur l’ISO/IEC/IEEE 8802-3
EC 61784-2:2019 spécifie:
• les indicateurs de performance prenant en charge les schémas de classement pour les exigences RTE (Real-Time Ethernet);
• les profils et les composants de réseau connexes reposant sur l’ISO/IEC/IEEE 8802-3, la série IEC 61158 et l’IEC 61784-1;
• les solutions RTE capables de fonctionner en parallèle avec les applications ISO/IEC/IEEE 8802-3.
Ces profils de communication sont appelés Ethernet en temps réel (RTE).
Cette quatrième édition annule et remplace la troisième édition parue en 2014. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
• la mise à jour de la référence de l’ISO/IEC 8802-3 à l’ISO/IEC/IEEE 8802-3;
• la mise à jour des références datées à la série IEC 61158, à l’IEC 61784 1, à la série IEC 61784-5 et à l’IEC 61918 dans tout le document;
• la mise à jour des tableaux de sélection pour CPF 2, CPF 3, CPF 4, CPF 8 et CPF 17;
– CPF3: mise à jour des exigences pour toutes les classes de conformité;
– CPF3: mise à jour des exigences de temporisation pour les appareils d'entrée-sortie;
– CPF3: affinage des classes d'application ajoutées;
• l'ajout d’une nouvelle famille de profils de communication – CPF 20 à l’Article 21;
• l'ajout d’une nouvelle famille de profils de communication – CPF 21 à l’Article 22.
La présente version bilingue (2020-04) correspond à la version anglaise monolingue publiée en 2019-04.
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IEC 61784-2 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Profiles –
Part 2: Additional fieldbus profiles for real-time networks based on
ISO/IEC/IEEE 8802-3
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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
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IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
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variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
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IEC publications issued since 2002. Some entries have been
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need further assistance, please contact the Customer Service
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IEC 61784-2 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Profiles –
Part 2: Additional fieldbus profiles for real-time networks based on
ISO/IEC/IEEE 8802-3
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 35.100.20; 35.240.50 ISBN 978-2-8322-6725-7
– 2 – IEC 61784-2:2019 © IEC 2019
CONTENTS
FOREWORD . 17
INTRODUCTION . 19
1 Scope . 20
2 Normative references . 20
3 Terms, definitions, abbreviated terms, acronyms, and conventions . 26
3.1 Terms and definitions . 26
3.2 Abbreviated terms and acronyms . 30
3.3 Symbols . 31
3.3.1 CPF 2 symbols . 32
3.3.2 CPF 3 symbols . 33
3.3.3 CPF 4 symbols . 34
3.3.4 CPF 6 symbols . 34
3.3.5 CPF 10 symbols . 35
3.3.6 CPF 11 symbols . 36
3.3.7 CPF 12 symbols . 37
3.3.8 CPF 13 symbols . 37
3.3.9 CPF 14 symbols . 38
3.3.10 CPF 15 symbols . 39
3.3.11 CPF 16 symbols . 39
3.3.12 CPF 17 symbols . 40
3.3.13 CPF 18 symbols . 41
3.3.14 CPF 20 symbols . 42
3.3.15 CPF 21 symbols . 43
3.4 Conventions . 43
3.4.1 Conventions common to all layers . 43
3.4.2 Physical layer . 45
3.4.3 Data-link layer . 45
3.4.4 Application layer . 46
4 Conformance to communication profiles . 46
5 RTE performance indicators . 47
5.1 Basic principles of performance indicators . 47
5.2 Application requirements . 48
5.3 Performance indicators . 48
5.3.1 Delivery time . 48
5.3.2 Number of RTE end-stations . 49
5.3.3 Basic network topology . 49
5.3.4 Number of switches between RTE end-stations . 49
5.3.5 Throughput RTE . 49
5.3.6 Non-RTE bandwidth . 49
5.3.7 Time synchronization accuracy . 50
5.3.8 Non-time-based synchronization accuracy . 50
5.3.9 Redundancy recovery time . 50
6 Conformance tests . 50
6.1 Concept . 50
6.2 Methodology . 51
6.3 Test conditions and test cases . 51
6.4 Test procedure and measuring . 51
6.5 Test report . 52
7 Communication Profile Family 2 (CIP™) – RTE communication profiles . 52
7.1 General overview . 52
7.2 Profile 2/2 . 53
7.2.1 Physical layer . 53
7.2.2 Data-link layer . 53
7.2.3 Application layer . 53
7.2.4 Performance indicator selection . 53
7.3 Profile 2/2.1 . 57
7.3.1 Physical layer . 57
7.3.2 Data-link layer . 57
7.3.3 Application layer . 59
7.3.4 Performance indicator selection . 61
8 Communication Profile Family 3 (PROFIBUS & PROFINET) – RTE communication
profiles . 63
8.1 General overview . 63
8.1.1 CPF 3 overview . 63
8.1.2 Administrative numbers . 63
8.1.3 Node Classes . 64
8.1.4 Protocol and timing parameters . 66
8.1.5 Communication classes . 76
8.1.6 Media redundancy classes . 79
8.1.7 Media classes . 80
8.1.8 Application classes . 81
8.1.9 Records . 86
8.1.10 Communication feature list . 94
8.1.11 Conformance class behaviors . 94
8.2 Profile 3/4 . 101
8.2.1 Physical layer . 101
8.2.2 Data link layer . 101
8.2.3 Application layer . 102
8.2.4 Performance indicator selection . 110
8.3 Profile 3/5 . 117
8.3.1 Physical layer . 117
8.3.2 Data link layer . 117
8.3.3 Application layer . 118
8.3.4 Performance indicator selection . 125
8.4 Profile 3/6 . 126
8.4.1 Physical layer . 126
8.4.2 Data link layer . 126
8.4.3 Application layer . 127
8.4.4 Performance indicator selection . 133
9 Communication Profile Family 4 (P-NET) – RTE communication profiles . 137
9.1 General overview . 137
9.2 Profile 4/3, P-NET on IP . 138
9.2.1 Physical layer . 138
9.2.2 Data-link layer . 138
9.2.3 Application layer .
...
IEC 61784-2 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Profiles –
Part 2: Additional fieldbus profiles for real-time networks based on
ISO/IEC/IEEE 8802-3
Réseaux de communication industriels – Profils –
Partie 2: Profils de bus de terrain supplémentaires pour les réseaux en temps
réel fondés sur l’ISO/IEC/IEEE 8802-3
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
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.
Droits de reproduction réservés. Sauf indication contraire, aucune partie de cette publication ne peut être reproduite
ni utilisée sous quelque forme que ce soit et par aucun procédé, électronique ou mécanique, y compris la photocopie
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questions sur le copyright de l'IEC ou si vous désirez obtenir des droits supplémentaires sur cette publication, utilisez
les coordonnées ci-après ou contactez le Comité national de l'IEC de votre pays de résidence.
IEC Central Office Tel.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform Electropedia - www.electropedia.org
The advanced search enables to find IEC publications by a The world's leading online dictionary on electrotechnology,
variety of criteria (reference number, text, technical containing more than 22 000 terminological entries in English
committee,…). It also gives information on projects, replaced and French, with equivalent terms in 16 additional languages.
and withdrawn publications. Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Just Published - webstore.iec.ch/justpublished
Stay up to date on all new IEC publications. Just Published IEC Glossary - std.iec.ch/glossary
details all new publications released. Available online and 67 000 electrotechnical terminology entries in English and
once a month by email. French extracted from the Terms and Definitions clause of
IEC publications issued since 2002. Some entries have been
IEC Customer Service Centre - webstore.iec.ch/csc collected from earlier publications of IEC TC 37, 77, 86 and
If you wish to give us your feedback on this publication or CISPR.
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
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IEC 61784-2 ®
Edition 4.0 2019-04
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Industrial communication networks – Profiles –
Part 2: Additional fieldbus profiles for real-time networks based on
ISO/IEC/IEEE 8802-3
Réseaux de communication industriels – Profils –
Partie 2: Profils de bus de terrain supplémentaires pour les réseaux en temps
réel fondés sur l’ISO/IEC/IEEE 8802-3
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 35.100.20; 35.240.50 ISBN 978-2-8322-8043-0
– 2 – IEC 61784-2:2019 © IEC 2019
CONTENTS
FOREWORD . 17
INTRODUCTION . 19
1 Scope . 20
2 Normative references . 20
3 Terms, definitions, abbreviated terms, acronyms, and conventions . 26
3.1 Terms and definitions . 26
3.2 Abbreviated terms and acronyms . 30
3.3 Symbols . 31
3.3.1 CPF 2 symbols . 32
3.3.2 CPF 3 symbols . 33
3.3.3 CPF 4 symbols . 34
3.3.4 CPF 6 symbols . 34
3.3.5 CPF 10 symbols . 35
3.3.6 CPF 11 symbols . 36
3.3.7 CPF 12 symbols . 37
3.3.8 CPF 13 symbols . 37
3.3.9 CPF 14 symbols . 38
3.3.10 CPF 15 symbols . 39
3.3.11 CPF 16 symbols . 39
3.3.12 CPF 17 symbols . 40
3.3.13 CPF 18 symbols . 41
3.3.14 CPF 20 symbols . 42
3.3.15 CPF 21 symbols . 43
3.4 Conventions . 43
3.4.1 Conventions common to all layers . 43
3.4.2 Physical layer . 45
3.4.3 Data-link layer . 45
3.4.4 Application layer . 46
4 Conformance to communication profiles . 46
5 RTE performance indicators . 47
5.1 Basic principles of performance indicators . 47
5.2 Application requirements . 48
5.3 Performance indicators . 48
5.3.1 Delivery time . 48
5.3.2 Number of RTE end-stations . 49
5.3.3 Basic network topology . 49
5.3.4 Number of switches between RTE end-stations . 49
5.3.5 Throughput RTE . 49
5.3.6 Non-RTE bandwidth . 49
5.3.7 Time synchronization accuracy . 50
5.3.8 Non-time-based synchronization accuracy . 50
5.3.9 Redundancy recovery time . 50
6 Conformance tests . 50
6.1 Concept . 50
6.2 Methodology . 51
6.3 Test conditions and test cases . 51
6.4 Test procedure and measuring . 51
6.5 Test report . 52
7 Communication Profile Family 2 (CIP™) – RTE communication profiles . 52
7.1 General overview . 52
7.2 Profile 2/2 . 53
7.2.1 Physical layer . 53
7.2.2 Data-link layer . 53
7.2.3 Application layer . 53
7.2.4 Performance indicator selection . 53
7.3 Profile 2/2.1 . 57
7.3.1 Physical layer . 57
7.3.2 Data-link layer . 57
7.3.3 Application layer . 59
7.3.4 Performance indicator selection . 61
8 Communication Profile Family 3 (PROFIBUS & PROFINET) – RTE communication
profiles . 63
8.1 General overview . 63
8.1.1 CPF 3 overview . 63
8.1.2 Administrative numbers . 63
8.1.3 Node Classes . 64
8.1.4 Protocol and timing parameters . 66
8.1.5 Communication classes . 76
8.1.6 Media redundancy classes . 79
8.1.7 Media classes . 80
8.1.8 Application classes .
...
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