EN 62541-3:2015

OPC unified architecture - Part 3: Address Space Model

IEC 62541-3:2015 describes the OPC Unified Architecture (OPC UA) AddressSpace and its Objects. It is the OPC UA meta model on which OPC UA information models are based. This second edition cancels and replaces the first edition published in 2010 and constitutes a technical revision. It includes the following changes: - Added rules for subtyping enumerations; - Added Property EnumValues; - Added Property ValueAsText; - Added EventType SystemStatusChangeEventType; - Added Properties MaxArrayLength and MaxStringLength; - Removed the concept of ModelParent; - Added EventType ProgressEventType; - Stated that it is allowed to use TAI in all places where UTC time is used; - Added Property EngineeringUnits; - Added ModellingRules OptionalPlaceholder and MandatoryPlaceholder.

OPC Unified Architecture - Teil 3: Adressraummodell

Architecture unifiée OPC - Partie 3: Modèle de l'Espace d'Adressage

L'IEC 62541-3:2015 décrit l'Espace d'Adressage (AddressSpace) de l'Architecture Unifiée OPC (OPC UA) ainsi que les Objets correspondants. Elle est le métamodèle OPC UA sur lequel se fondent les modèles d'informations OPC UA. Cette deuxième édition annule et remplace la première édition parue en 2010 et constitue une révision technique. Cette édition inclut les modifications suivantes: - Ajout de règles de sous-typage pour les énumérations; - Ajout de la Propriété EnumValues (Valeurs d'Énumération); - Ajout de la Propriété ValueAsText (Valeur comme Texte); - Ajout du Type d'Événement SystemStatusChange (Changement de Statut du Système); - Ajout des Propriétés MaxArrayLength (Longueur de Matrice Maximale) et MaxStringLength (Longueur de Chaîne Maximale); - Suppression du concept de Modèle Parent (ModelParent); - Ajout du Type d'Événement ProgressEventType (Type d'Événement de Progrès); - Indication qu'il est admis d'utiliser le TAI (Temps Atomique International - International Atomic Time) au lieu du temps UTC; - Ajout de la Propriété EngineeringUnits (Unités Techniques); - Ajout des Règles de Modélisation OptionalPlaceholder (Espace Réservé Facultatif) et MandatoryPlaceholder (Espace Réservé Obligatoire).

Enotna arhitektura OPC - 3. del: Model naslovnega prostora (IEC 62541-3:2015)

Ta del standarda IEC 62541 opisuje naslovni prostor enotne arhitekture OPC (OPC UA) in pripadajoče predmete. Ta del standarda IEC 62541 je meta model enotne arhitekture OPC, na katerem temeljijo informacijski modeli enotne arhitekture OPC.

General Information

• Status: Withdrawn
• Publication Date: 28-May-2015
• Withdrawal Date: 28-Apr-2018
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100 - Open systems interconnection (OSI)
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65E - IEC_SC_65E
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 12-Aug-2023
• Completion Date: 12-Aug-2023
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: SIST EN 62541-3:2015 - OPC Unified Architecture -- Part 3: Address Space Model (IEC 62541-3:2015)

Relations

• Replaces: EN 62541-3:2010 - OPC unified architecture - Part 3: Address Space Model
• Effective Date: 29-Jan-2023
• Replaced By: EN IEC 62541-3:2020 - OPC Unified Architecture - Part 3: Address Space Model
• Effective Date: 08-Sep-2020

Standards Content (Sample)

SLOVENSKI STANDARD
01-oktober-2015
1DGRPHãþD
SIST EN 62541-3:2010
Enotna arhitektura OPC - 3. del: Model naslovnega prostora (IEC 62541-3:2015)
OPC Unified Architecture -- Part 3: Address Space Model (IEC 62541-3:2015)
OPC unified architecture - Part 3: Address Space Model (IEC 62541-3:2015)
Architecture unifiée OPC - Partie 3: Modèle de l'Espace d'Adressage (IEC 62541-
3:2015)
Ta slovenski standard je istoveten z: EN 62541-3:2015
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 62541-3
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2015
ICS 25.040.40; 35.100 Supersedes EN 62541-3:2010
English Version
OPC unified architecture - Part 3: Address Space Model
(IEC 62541-3:2015)
Architecture unifiée OPC - Partie 3: Modèle de l'Espace OPC Unified Architecture - Teil 3: Adressraummodell
d'Adressage (IEC 62541-3:2015)
(IEC 62541-3:2015)
This European Standard was approved by CENELEC on 2015-04-29. 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, 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: Avenue Marnix 17, B-1000 Brussels
© 2015 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN 62541-3:2015 E
Foreword
The text of document 65E/374/CDV, future edition 2 of IEC 62541-3, 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 (dop) 2016-01-29
national level by publication of an identical national
standard or by endorsement
(dow) 2018-04-29
• latest date by which the national standards conflicting with
the document have to be withdrawn

This document supersedes EN 62541-3:2010.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such
patent rights.
This document has been prepared under a mandate given to CENELEC by the European Commission
and the European Free Trade Association, and supports essential requirements of EU Directive(s).
Endorsement notice
The text of the International Standard IEC 62541-3:2015 was approved by CENELEC as a European
Standard without any modification.

- 3 - EN 62541-3:2015
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
NOTE 1 When 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 - CLC/TR 62541-1 -
Part 1: Overview and concepts
IEC 62541-4 -  OPC Unified Architecture - EN 62541-4 -
Part 4: Services
IEC 62541-5 -  OPC unified architecture - EN 62541-5 -
Part 5: Information Model
IEC 62541-6 -  OPC unified architecture - EN 62541-6 -
Part 6: Mappings
IEC 62541-8 -  OPC Unified Architecture - EN 62541-8 -
Part 8: Data Access
IEC 62541-11 -  OPC unified architecture - EN 62541-11 -
Part 11: Historical Access
ISO/IEC 10918-1 -  Information technology - Digital - -
compression and coding of
continuous-tone still images:
Requirements and guidelines
ISO/IEC 15948 -  Information technology - Computer - -
graphics and image processing -
Portable Network Graphics (PNG) -
Functional specification
ISO 639 series Codes for the representation of - -
names of languages
ISO 3166 series Codes for the representation of - -
names of countries and their
subdivisions
ANSI/IEEE 754 1985 IEEE Standard for Binary Floating- - -
Point Arithmetic
Publication Year Title EN/HD Year
IETF RFC 3066 -  Tags for the Identification of - -
Languages
W3C XML Schema Part 1 -  Structures - -
W3C XML Schema Part 2 -  Datatypes - -
W3C Xpath -  XML Path Language (XPath) - -

IEC 62541-3 ®
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 3: Address Space Model
Architecture unifiee OPC –
Partie 3: Modèle de l'Espace d'Adressage

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100 ISBN 978-2-8322-2385-7

– 2 – IEC 62541-3:2015 © IEC 2015
CONTENTS
FOREWORD . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions, abbreviations and conventions . 13
3.1 Terms and definitions . 13
3.2 Abbreviations . 14
3.3 Conventions . 14
3.3.1 Conventions for AddressSpace figures. 14
3.3.2 Conventions for defining NodeClasses . 14
4 AddressSpace concepts . 16
4.1 Overview. 16
4.2 Object Model . 16
4.3 Node Model . 16
4.3.1 General. 16
4.3.2 NodeClasses . 17
4.3.3 Attributes . 17
4.3.4 References . 17
4.4 Variables . 18
4.4.1 General. 18
4.4.2 Properties . 18
4.4.3 DataVariables . 18
4.5 TypeDefinitionNodes . 19
4.5.1 General. 19
4.5.2 Complex TypeDefinitionNodes and their InstanceDeclarations . 20
4.5.3 Subtyping . 20
4.5.4 Instantiation of complex TypeDefinitionNodes . 21
4.6 Event Model . 22
4.6.1 General. 22
4.6.2 EventTypes . 22
4.6.3 Event Categorization. 23
4.7 Methods . 23
5 Standard NodeClasses . 23
5.1 Overview. 23
5.2 Base NodeClass . 24
5.2.1 General. 24
5.2.2 NodeId . 24
5.2.3 NodeClass . 24
5.2.4 BrowseName . 24
5.2.5 DisplayName . 25
5.2.6 Description . 25
5.2.7 WriteMask. 25
5.2.8 UserWriteMask . 26
5.3 ReferenceType NodeClass . 26
5.3.1 General. 26
5.3.2 Attributes . 27
5.3.3 References . 28

IEC 62541-3:2015 © IEC 2015 – 3 –
5.4 View NodeClass . 29
5.5 Objects . 31
5.5.1 Object NodeClass . 31
5.5.2 ObjectType NodeClass . 33
5.5.3 Standard ObjectType FolderType . 35
5.5.4 Client-side creation of Objects of an ObjectType . 35
5.6 Variables . 35
5.6.1 General. 35
5.6.2 Variable NodeClass . 35
5.6.3 Properties . 39
5.6.4 DataVariable . 39
5.6.5 VariableType NodeClass . 40
5.6.6 Client-side creation of Variables of an VariableType . 42
5.7 Method NodeClass . 42
5.8 DataTypes . 44
5.8.1 DataType Model.
...