EN 62541-3:2010

SLOVENSKI STANDARD
01-december-2010
Poenotena arhitektura OPC - 3. del: Model naslovnega prostora (IEC 62541-3:2010)
OPC unified architecture - Part 3: Address space model (IEC 62541-3:2010)
OPC Unified Architecture - Teil 3: Adressraummodell (IEC 62541-3:2010)
Architecture unifiée OPC -- Partie 3: Modèle d'espace d'adressage (CEI 62541-3:2010)
Ta slovenski standard je istoveten z: EN 62541-3:2010
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
October 2010
EUROPÄISCHE NORM
ICS 25.040.40; 35.100
English version
OPC unified architecture -
Part 3: Address Space Model
(IEC 62541-3:2010)
Architecture unifiée OPC -  OPC Unified Architecture -
Partie 3: Modèle d'espace d'adressage Teil 3: Adressraummodell
(CEI 62541-3:2010) (IEC 62541-3:2010)

This European Standard was approved by CENELEC on 2010-10-01. 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 Central Secretariat 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 Central Secretariat 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, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62541-3:2010 E
Foreword
The text of document 64E/160/FDIS, future edition 1 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 was approved by CENELEC as EN 62541-3 on
2010-10-01.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent
rights.
The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2011-07-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2013-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 62541-3:2010 was approved by CENELEC as a European
Standard without any modification.
__________
- 3 - EN 62541-3:2010
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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  When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD
applies.
Publication Year Title EN/HD Year

1) 2)
IEC 62541-4 200X OPC unified architecture - EN 62541-4 200X
Part 4: Services
1) 2)
IEC 62541-5 200X OPC unified architecture - EN 62541-5 200X
Part 5: Information model
1) 2)
IEC 62541-6 200X OPC unified architecture - EN 62541-6 200X
Part 6: Mappings
1) 2)
IEC 62541-8 200X OPC unified architecture - EN 62541-8 200X
Part 8: Data access
IEC/TR 62541-1 - OPC unified architecture - CLC/TR 62541-1 -
Part 1: Overview and concepts
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 EN ISO 3166 Series
countries and their subdivivions

IEEE 754 1985 Binary Floating-Point Arithmetic - -

1)
To be published.
2)
At draft stage.
IEC 62541-3 ®
Edition 1.0 2010-07
INTERNATIONAL
STANDARD
OPC unified architecture –
Part 3: Address Space Model
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XE
ICS 25.040.40; 35.100 ISBN 978-2-88912-081-9
– 2 – 62541-3 © IEC:2010(E)
CONTENTS
FOREWORD.9
INTRODUCTION.11
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.19
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

62541-3 © IEC:2010(E) – 3 –
5.3.3 References.28
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 .40
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 .44
5.8.2 Encoding Rules for different kinds of DataTypes.46
5.8.3 DataType NodeClass.47
5.8.4 DataTypeDictionary, DataTypeDescription, DataTypeEncoding and
DataTypeSystem .48
5.9 Summary of Attributes of the NodeClasses.50
6 Type Model for ObjectTypes and VariableTypes .51
6.1 Overview .51
6.2 Definitions .51
6.2.1 InstanceDeclaration.51
6.2.2 Instances without ModellingRules.51
6.2.3 InstanceDeclarationHierarchy.
...