EN IEC 62541-14:2020

OPC unified architecture - Part 14: PubSub

IEC 62541-14:2020 defines the OPC Unified Architecture (OPC UA) PubSub communication model. It defines an OPC UA publish subscribe pattern which complements the client server pattern defined by the Services in IEC 62541-4. IEC TR 62541-1 gives an overview of the two models and their distinct uses. PubSub allows the distribution of data and events from an OPC UA information source to interested observers inside a device network as well as in IT and analytics cloud systems. This document consists of • a general introduction of the PubSub concepts, • a definition of the PubSub configuration parameters, • mapping of PubSub concepts and configuration parameters to messages and transport protocols, and • a PubSub configuration model. Not all OPC UA Applications will need to implement all defined message and transport protocol mappings. IEC 62541-7 defines the Profile that dictates which mappings need to be implemented in order to be compliant with a particular Profile.

OPC Unified Architecture – Teil 14: Festlegungen zur Umsetzung des Publisher-Subscriber-Models

Architecture unifiée OPC - Partie 14: PubSub

IEC 62541-14:2020 définit le modèle de communication PubSub de l'architecture unifiée OPC (OPC UA). Elle définit un modèle publication/abonnement OPC UA qui vient compléter le modèle client/serveur défini par les Services dans l'IEC 62541-4. Une présentation des deux modèles et de leurs utilisations est donnée dans l'IEC TR 62541-1. PubSub permet de distribuer des données et des événements provenant d'une source d'informations OPC UA aux observateurs d'intérêt à l'intérieur d'un réseau de dispositifs ainsi que dans les systèmes Cloud informatiques et d'analyse. Le présent document se compose: • d'une présentation générale des concepts PubSub; • d'une définition des paramètres de configuration PubSub; • d'un mapping des concepts et des paramètres de configuration PubSub avec les messages et les protocoles de transport; et • d'un modèle de configuration PubSub. Il n'est pas nécessaire que l'ensemble des Applications OPC UA mettent en œuvre tous les mappings avec les messages et les protocoles de transport. L'IEC 62541-7 définit le Profil qui dicte les mappings qu'il est nécessaire de mettre en œuvre afin d'être conforme à un Profil particulier.

Enotna arhitektura OPC - 14. del: Objava

General Information

• Status: Published
• Publication Date: 03-Sep-2020
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.05 - Multilayer applications
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65E - IEC_SC_65E
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 04-Sep-2020
• Completion Date: 04-Sep-2020
• Ref Project: SIST EN IEC 62541-14:2020 - OPC Unified Architecture - Part 14: PubSub

Relations

• Revised: prEN IEC 62541-14:2024 - OPC unified architecture - Part 14: Pubsub
• Effective Date: 31-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-december-2020
Enotna arhitektura OPC - 14. del: Objava
OPC Unified Architecture - Part 14: PubSub
OPC Unified Architecture - Teil 14: Festlegungen zur Umsetzung des Publisher-
Subscriber-Models
Architecture unifiée OPC - Partie 14: PubSub
Ta slovenski standard je istoveten z: EN IEC 62541-14:2020
ICS:
25.040.40 Merjenje in krmiljenje Industrial process
industrijskih postopkov measurement and control
35.240.50 Uporabniške rešitve IT v IT applications in industry
industriji
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 62541-14

NORME EUROPÉENNE
EUROPÄISCHE NORM
September 2020
ICS 25.040.40; 35.100.05
English Version
OPC unified architecture - Part 14: PubSub
(IEC 62541-14:2020)
Architecture unifiée OPC - Partie 14: PubSub OPC Unified Architecture - Teil 14: Festlegungen zur
(IEC 62541-14:2020) Umsetzung des Publisher-Subscriber-Models
(IEC 62541-14:2020)
This European Standard was approved by CENELEC on 2020-08-12. 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
© 2020 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62541-14:2020 E

European foreword
The text of document 65E/720/FDIS, future edition 1 of IEC 62541-14, prepared by SC 65E "Devices
and integration in enterprise systems" of IEC/TC 65 "Industrial-process measurement, control and
automation" was submitted to the IEC-CENELEC parallel vote and approved by CENELEC as
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2021-05-12
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2023-08-12
document have to be withdrawn
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 62541-14:2020 was approved by CENELEC as a European
Standard without any modification.

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/TR 62541-1 - OPC unified architecture - Part 1: CLC/TR 62541-1 -
Overview and concepts
IEC/TR 62541-2 - OPC unified architecture - Part 2: CLC/TR 62541-2 -
Security model
IEC 62541-3 - OPC Unified Architecture - Part 3: - -
Address Space Model
IEC 62541-4 - OPC Unified Architecture - Part 4: - -
Services
IEC 62541-5 - OPC Unified Architecture - Part 5: - -
Information Model
IEC 62541-6 - OPC Unified Architecture - Part 6: - -
Mappings
IEC 62541-7 - OPC unified architecture - Part 7: EN IEC 62541-7 -
Profiles
IEC 62541-8 - OPC Unified Architecture - Part 8: EN IEC 62541-8 -
Data Access
IEC 62541-12 - OPC unified architecture - Part 12: EN IEC 62541-12 -
Discovery and global services
ISO/IEC 19464 2014 Information technology - Advanced - -
Message Queuing Protocol (AMQP)
v1.0 specification
ISO/IEC 20922 2016 Information technology - Message - -
Queuing Telemetry Transport (MQTT)
v3.1.1
IETF RFC 7159 - The JavaScript Object Notation - -
(JSON) Data Interchange Format

IEC 62541-14 ®
Edition 1.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 14: PubSub
Architecture unifiée OPC –
Partie 14: PubSub
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.05 ISBN 978-2-8322-8577-0

– 2 – IEC 62541-14:2020 © IEC 2020
CONTENTS
FOREWORD . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions and abbreviated terms . 13
3.1 Terms and definitions . 13
3.2 Abbreviated terms . 14
4 Overview . 14
4.1 Fields of application . 14
4.2 Abstraction layers . 15
4.3 Decoupling by use of middleware . 15
4.4 Synergy of models . 16
5 PubSub Concepts . 16
5.1 General . 16
5.2 DataSet . 17
5.2.1 General . 17
5.2.2 DataSetClass . 18
5.2.3 DataSetMetaData . 18
5.3 Messages . 19
5.3.1 General . 19
5.3.2 DataSetMessage field . 20
5.3.3 DataSetMessage . 20
5.3.4 NetworkMessage . 21
5.3.5 Message security . 21
5.3.6 Transport security . 22
5.3.7 SecurityGroup . 22
5.4 Entities . 22
5.4.1 Publisher . 22
5.4.2 Subscriber . 25
5.4.3 Security Key Service . 26
5.4.4 Message Oriented Middleware . 29
6 PubSub communication parameters . 33
6.1 Overview. 33
6.2 Common Configuration Parameters. 34
6.2.1 PubSubState State Machine . 34
6.2.2 PublishedDataSet parameters . 36
6.2.3 DataSetWriter Parameters . 44
6.2.4 Shared PubSubGroup Parameters . 48
6.2.5 WriterGroup parameters . 50
6.2.6 PubSubConnection Parameters . 52
6.2.7 ReaderGroup parameters . 55
6.2.8 DataSetReader Parameters . 56
6.2.9 SubscribedDataSet Parameters . 60
6.2.10 Information flow and status handling . 63
6.2.11 PubSubConfigurationDataType . 65
6.3 Message mapping configuration parameters . 66
6.3.1 UADP message mapping . 66

IEC 62541-14:2020 © IEC 2020 – 3 –
6.3.2 JSON message mapping . 74
6.4 Transport Protocol mapping configuration parameters . 77
6.4.1 Datagram Transport Protocol . 77
6.4.2 Broker Transport Protocol . 78
7 PubSub mappings . 83
7.1 General . 83
7.2 Message mappings . 83
7.2.1 General . 83
7.2.2 UADP message mapping . 83
7.2.3 JSON message mapping . 99
7.3 Transport Protocol Mappings . 102
7.3.1 General . 102
7.3.2 OPC UA UDP . 102
7.3.3 OPC UA Ethernet . 103
7.3.4 AMQP . 104
7.3.5 MQTT . 109
8 PubSub security key service model . 111
8.1 Overview. 111
8.2 PublishSubscribe Object . 111
8.3 PubSubKeyServiceType . 112
8.4 GetSecurityKeys method . 112
8.5 GetSecurityGroup method
...