OPC Unified Architecture - Part 5: Information Model

IEC 62541-5:2020 is available as IEC 62541-5:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 62541-5:2020 defines the Information Model of the OPC Unified Architecture. The Information Model describes standardized Nodes of a Server’s AddressSpace. These Nodes are standardized types as well as standardized instances used for diagnostics or as entry points to server-specific Nodes. Thus, the Information Model defines the AddressSpace of an empty OPC UA Server. However, it is not expected that all Servers will provide all of these Nodes.
This third edition cancels and replaces the second edition published in 2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Added Annex F on User Authentication. Describes the Role Information Model that also allows configuration of Roles.
b) Added new data types: "Union", "Decimal", "OptionSet", "DateString", "TimeString", "DurationString", NormalizedString", "DecimalString", and "AudioDataType".
c) Added Method to request a state change in a Server.
d) Added Method to set Subscription to persistent mode.
e) Added Method to request resending of data from a Subscription.
f) Added concept allowing to temporarily create a file to write to or read from a server in C.4.
g) Added new Variable type to support Selection Lists.
h) Added optional properties to FiniteStateMachineType to expose currently available states and transitions.
i) Added UrisVersion Property to ServerType. This version information can be used for session-less service invocation.

Architecture unifiée OPC - Partie 5: Modèle d'informations

IEC 62541-5:2020 est disponible sous forme de IEC 62541-5:2020 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.IEC 62541-5:2020 définit le Modèle d'information de l'Architecture unifiée OPC. Le Modèle d'information décrit des Nœuds normalisés de l'AddressSpace d'un Serveur. Ces Nœuds sont des types normalisés ainsi que des instances normalisées utilisés pour le diagnostic ou comme des points d'entrée à des Nœuds spécifiques au serveur. Ainsi, le Modèle d'information définit l'AddressSpace d'un Serveur OPC UA vide. Cependant, tous les Serveurs ne sont pas supposés fournir la totalité de ces Nœuds.
Cette troisième édition annule et remplace la deuxième édition parue en 2015. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
a) ajout de l'Annexe F concernant l'Authentification des utilisateurs; description du Modèle d'information de rôle qui autorise également la configuration des Rôles;
b) ajout de nouveaux types de données: "Union", "Decimal", "OptionSet", "DateString", "TimeString", "DurationString", "NormalizedString", "DecimalString" et "AudioDataType";
c) ajout d'une méthode afin de demander un changement d'état dans un Serveur;
d) ajout d'une méthode afin de définir un Abonnement en mode persistant;
e) ajout d'une méthode afin de demander le renvoi de données à partir d'un Abonnement;
f) ajout en C.4 d'un concept permettant la création temporaire d'un fichier pour l'écriture ou la lecture sur un serveur;
g) ajout d'un nouveau type de Variable afin de prendre en charge les Listes de sélection;
h) ajout de propriétés facultatives au FiniteStateMachineType afin de présenter les états et transitions actuellement disponibles;
i) ajout d'une propriété UrisVersion au ServerType. Ces informations de version peuvent être utilisées pour l'invocation de services sans session.

General Information

Status
Published
Publication Date
09-Jul-2020
Current Stage
PPUB - Publication issued
Completion Date
10-Jul-2020
Ref Project

Buy Standard

Standard
IEC 62541-5:2020 - OPC Unified Architecture - Part 5: Information Model
English and French language
371 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

IEC 62541-5
Edition 3.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 5: Information Model
Architecture unifiée OPC –
Partie 5: Modèle d'information
IEC 62541-5:2020-07(en-fr)
---------------------- Page: 1 ----------------------
THIS PUBLICATION IS COPYRIGHT PROTECTED
Copyright © 2020 IEC, Geneva, Switzerland

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

et les microfilms, sans l'accord écrit de l'IEC ou du Comité national de l'IEC du pays du demandeur. Si vous avez des

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.
A propos de l'IEC

La Commission Electrotechnique Internationale (IEC) est la première organisation mondiale qui élabore et publie des

Normes internationales pour tout ce qui a trait à l'électricité, à l'électronique et aux technologies apparentées.

A propos des publications IEC

Le contenu technique des publications IEC est constamment revu. Veuillez vous assurer que vous possédez l’édition la

plus récente, un corrigendum ou amendement peut avoir été publié.
Recherche de publications IEC - Electropedia - www.electropedia.org

webstore.iec.ch/advsearchform Le premier dictionnaire d'électrotechnologie en ligne au

La recherche avancée permet de trouver des publications IEC monde, avec plus de 22 000 articles terminologiques en

en utilisant différents critères (numéro de référence, texte, anglais et en français, ainsi que les termes équivalents dans

comité d’études,…). Elle donne aussi des informations sur les 16 langues additionnelles. Egalement appelé Vocabulaire

projets et les publications remplacées ou retirées. Electrotechnique International (IEV) en ligne.

IEC Just Published - webstore.iec.ch/justpublished Glossaire IEC - std.iec.ch/glossary

Restez informé sur les nouvelles publications IEC. Just 67 000 entrées terminologiques électrotechniques, en anglais

Published détaille les nouvelles publications parues. et en français, extraites des articles Termes et Définitions des

Disponible en ligne et une fois par mois par email. publications IEC parues depuis 2002. Plus certaines entrées

antérieures extraites des publications des CE 37, 77, 86 et
Service Clients - webstore.iec.ch/csc CISPR de l'IEC.
Si vous désirez nous donner des commentaires sur cette
publication ou si vous avez des questions contactez-nous:
sales@iec.ch.
---------------------- Page: 2 ----------------------
IEC 62541-5
Edition 3.0 2020-07
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 5: Information Model
Architecture unifiée OPC –
Partie 5: Modèle d'information
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.05 ISBN 978-2-8322-8592-3

Warning! Make sure that you obtained this publication from an authorized distributor.

Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur agréé.

® Registered trademark of the International Electrotechnical Commission
Marque déposée de la Commission Electrotechnique Internationale
---------------------- Page: 3 ----------------------
– 2 – IEC 62541-5:2020 © IEC 2020
CONTENTS

FOREWORD ......................................................................................................................... 14

1 Scope ............................................................................................................................ 16

2 Normative references .................................................................................................... 16

3 Terms, definitions, abbreviated terms and conventions .................................................. 17

3.1 Terms and definitions ............................................................................................ 17

3.2 Abbreviated terms ................................................................................................. 17

3.3 Conventions for Node descriptions ........................................................................ 17

4 NodeIds and BrowseNames ........................................................................................... 19

4.1 NodeIds ................................................................................................................ 19

4.2 BrowseNames ....................................................................................................... 19

5 Common Attributes ........................................................................................................ 19

5.1 General ................................................................................................................. 19

5.2 Objects ................................................................................................................. 20

5.3 Variables .............................................................................................................. 20

5.4 VariableTypes ....................................................................................................... 21

5.5 Methods ................................................................................................................ 21

6 Standard ObjectTypes ................................................................................................... 21

6.1 General ................................................................................................................. 21

6.2 BaseObjectType ................................................................................................... 22

6.3 ObjectTypes for the Server Object ........................................................................ 22

6.3.1 ServerType .................................................................................................... 22

6.3.2 ServerCapabilitiesType .................................................................................. 25

6.3.3 ServerDiagnosticsType .................................................................................. 28

6.3.4 SessionsDiagnosticsSummaryType ............................................................... 29

6.3.5 SessionDiagnosticsObjectType ...................................................................... 29

6.3.6 VendorServerInfoType ................................................................................... 30

6.3.7 ServerRedundancyType................................................................................. 30

6.3.8 TransparentRedundancyType ........................................................................ 31

6.3.9 NonTransparentRedundancyType .................................................................. 31

6.3.10 NonTransparentNetworkRedundancyType ..................................................... 32

6.3.11 OperationLimitsType ...................................................................................... 33

6.3.12 AddressSpaceFileType .................................................................................. 34

6.3.13 NamespaceMetadataType ............................................................................. 35

6.3.14 NamespacesType .......................................................................................... 36

6.4 ObjectTypes used as EventTypes ......................................................................... 37

6.4.1 General ......................................................................................................... 37

6.4.2 BaseEventType ............................................................................................. 37

6.4.3 AuditEventType ............................................................................................. 40

6.4.4 AuditSecurityEventType ................................................................................. 41

6.4.5 AuditChannelEventType ................................................................................ 42

6.4.6 AuditOpenSecureChannelEventType ............................................................. 42

6.4.7 AuditSessionEventType ................................................................................. 43

6.4.8 AuditCreateSessionEventType....................................................................... 44

6.4.9 AuditUrlMismatchEventType .......................................................................... 45

6.4.10 AuditActivateSessionEventType .................................................................... 45

---------------------- Page: 4 ----------------------
IEC 62541-5:2020 © IEC 2020 – 3 –

6.4.11 AuditCancelEventType .................................................................................. 46

6.4.12 AuditCertificateEventType ............................................................................. 47

6.4.13 AuditCertificateDataMismatchEventType ....................................................... 47

6.4.14 AuditCertificateExpiredEventType .................................................................. 48

6.4.15 AuditCertificateInvalidEventType ................................................................... 48

6.4.16 AuditCertificateUntrustedEventType .............................................................. 48

6.4.17 AuditCertificateRevokedEventType ................................................................ 49

6.4.18 AuditCertificateMismatchEventType ............................................................... 49

6.4.19 AuditNodeManagementEventType ................................................................. 50

6.4.20 AuditAddNodesEventType ............................................................................. 50

6.4.21 AuditDeleteNodesEventType ......................................................................... 50

6.4.22 AuditAddReferencesEventType ..................................................................... 51

6.4.23 AuditDeleteReferencesEventType.................................................................. 51

6.4.24 AuditUpdateEventType .................................................................................. 52

6.4.25 AuditWriteUpdateEventType .......................................................................... 52

6.4.26 AuditHistoryUpdateEventType ....................................................................... 53

6.4.27 AuditUpdateMethodEventType ....................................................................... 54

6.4.28 SystemEventType .......................................................................................... 54

6.4.29 DeviceFailureEventType ................................................................................ 54

6.4.30 SystemStatusChangeEventType .................................................................... 55

6.4.31 BaseModelChangeEventType ........................................................................ 55

6.4.32 GeneralModelChangeEventType.................................................................... 56

6.4.33 SemanticChangeEventType ........................................................................... 56

6.4.34 EventQueueOverflowEventType .................................................................... 57

6.4.35 ProgressEventType ....................................................................................... 57

6.5 ModellingRuleType ............................................................................................... 58

6.6 FolderType ........................................................................................................... 58

6.7 DataTypeEncodingType ........................................................................................ 58

6.8 AggregateFunctionType ........................................................................................ 58

7 Standard VariableTypes ................................................................................................ 59

7.1 General ................................................................................................................. 59

7.2 BaseVariableType ................................................................................................. 59

7.3 PropertyType ........................................................................................................ 59

7.4 BaseDataVariableType ......................................................................................... 60

7.5 ServerVendorCapabilityType ................................................................................. 60

7.6 ServerStatusType ................................................................................................. 61

7.7 BuildInfoType ........................................................................................................ 61

7.8 ServerDiagnosticsSummaryType .......................................................................... 62

7.9 SamplingIntervalDiagnosticsArrayType ................................................................. 63

7.10 SamplingIntervalDiagnosticsType ......................................................................... 63

7.11 SubscriptionDiagnosticsArrayType ........................................................................ 63

7.12 SubscriptionDiagnosticsType ................................................................................ 64

7.13 SessionDiagnosticsArrayType ............................................................................... 65

7.14 SessionDiagnosticsVariableType .......................................................................... 66

7.15 SessionSecurityDiagnosticsArrayType .................................................................. 69

7.16 SessionSecurityDiagnosticsType .......................................................................... 69

7.17 OptionSetType ...................................................................................................... 70

7.18 SelectionListType ................................................................................................. 71

7.19 AudioVariableType ................................................................................................ 72

---------------------- Page: 5 ----------------------
– 4 – IEC 62541-5:2020 © IEC 2020

8 Standard Objects and their Variables ............................................................................. 73

8.1 General ................................................................................................................. 73

8.2 Objects used to organise the AddressSpace structure .......................................... 73

8.2.1 Overview ....................................................................................................... 73

8.2.2 Root .............................................................................................................. 73

8.2.3 Views ............................................................................................................ 74

8.2.4 Objects .......................................................................................................... 74

8.2.5 Types ............................................................................................................ 75

8.2.6 ObjectTypes .................................................................................................. 75

8.2.7 VariableTypes ............................................................................................... 76

8.2.8 ReferenceTypes ............................................................................................ 77

8.2.9 DataTypes ..................................................................................................... 78

8.2.10 EventTypes ................................................................................................... 78

8.3 Server Object and its containing Objects ............................................................... 79

8.3.1 General ......................................................................................................... 79

8.3.2 Server Object ................................................................................................ 80

8.4 ModellingRule Objects .......................................................................................... 80

8.4.1 ExposesItsArray ............................................................................................ 80

8.4.2 Mandatory ..................................................................................................... 81

8.4.3 Optional ......................................................................................................... 81

8.4.4 OptionalPlaceholder ...................................................................................... 81

8.4.5 MandatoryPlaceholder ................................................................................... 82

9 Standard Methods ......................................................................................................... 82

9.1 GetMonitoredItems ............................................................................................... 82

9.2 ResendData .......................................................................................................... 83

9.3 SetSubscriptionDurable ........................................................................................ 83

9.4 RequestServerStateChange .................................................................................. 84

10 Standard Views ............................................................................................................. 85

11 Standard ReferenceTypes ............................................................................................. 85

11.1 References ........................................................................................................... 85

11.2 HierarchicalReferences ......................................................................................... 86

11.3 NonHierarchicalReferences .................................................................................. 86

11.4 HasChild ............................................................................................................... 87

11.5 Aggregates ........................................................................................................... 87

11.6 Organizes ............................................................................................................. 87

11.7 HasComponent ..................................................................................................... 87

11.8 HasOrderedComponent ........................................................................................ 88

11.9 HasProperty .......................................................................................................... 88

11.10 HasSubtype .......................................................................................................... 88

11.11 HasModellingRule ................................................................................................. 89

11.12 HasTypeDefinition................................................................................................. 89

11.13 HasEncoding ........................................................................................................ 89

11.14 HasEventSource ................................................................................................... 90

11.15 HasNotifier ............................................................................................................ 90

11.16 GeneratesEvent .................................................................................................... 90

11.17 AlwaysGeneratesEvent ......................................................................................... 91

12 Standard DataTypes ...................................................................................................... 91

12.1 Overview............................................................................................................... 91

---------------------- Page: 6 ----------------------
IEC 62541-5:2020 © IEC 2020 – 5 –

12.2 DataTypes defined in IEC 62541‑3 ........................................................................ 91

12.3 DataTypes defined in IEC 62541‑4 ........................................................................ 98

12.4 BuildInfo ............................................................................................................... 99

12.5 RedundancySupport ............................................................................................. 99

12.6 ServerState ......................................................................................................... 100

12.7 RedundantServerDataType ................................................................................. 101

12.8 SamplingIntervalDiagnosticsDataType ................................................................ 101

12.9 ServerDiagnosticsSummaryDataType ................................................................. 102

12.10 ServerStatusDataType ........................................................................................ 102

12.11 SessionDiagnosticsDataType .............................................................................. 103

12.12 SessionSecurityDiagnosticsDataType ................................................................. 106

12.13 ServiceCounterDataType .................................................................................... 107

12.14 StatusResult ....................................................................................................... 107

12.15 SubscriptionDiagnosticsDataType ....................................................................... 107

12.16 ModelChangeStructureDataType ........................................................................ 109

12.17 SemanticChangeStructureDataType ................................................................... 110

12.18 BitFieldMaskDataType ........................................................................................ 110

12.19 NetworkGroupDataType ...................................................................................... 110

12.20 EndpointUrlListDataType .................................................................................... 111

12.21 KeyValuePair ...................................................................................................... 111

12.22 EndpointType ...................................................................................................... 112

Annex A (informative) Design decisions when modelling the server information ................. 113

A.1 Overview............................................................................................................. 113

A.2 ServerType and Server Object ............................................................................ 113

A.3 Typed complex Objects beneath the Server Object ............................................. 113

A.4 Properties versus DataVariables ......................................................................... 113

A.5 Complex Variables using complex DataTypes ..................................................... 114

A.6 Complex Variables having an array ..................................................................... 114

A.7 Redundant information ........................................................................................ 114

A.8 Usage of the BaseDataVariableType ................................................................... 115

A.9 Subtyping ........................................................................................................... 115

A.10 Extensibility mechanism ...................................................................................... 115

Annex B (normative) StateMachines .................................................................................. 116

B.1 General ............................................................................................................... 116

B.2 Examples of finite state machines ....................................................................... 116

B.2.1 Simple state machine .................................................................................. 116

B.2.2 State machine containing substates ............................................................. 117

B.3 Definition of state machine .................................................................................. 118

B.4 Representation of state machines in the AddressSpace ...................................... 118

B.4.1 Overview ..................................................................................................... 118

B.4.2 StateMachineType ....................................................................................... 119

B.4.3 StateVariableType ....................................................................................... 120

B.4.4 TransitionVariableType ................................................................................ 121

B.4.5 FiniteStateMachineType .............................................................................. 122

B.4.6 FiniteStateVariableType .............................................................................. 124

B.4.7 FiniteTransitionVariableType ....................................................................... 125

B.4.8 StateType .................................................................................................... 126

B.4.9 InitialStateType ........................................................................................... 126

B.4.10 TransitionType ............................................................................................. 127

---------------------- Page: 7 ----------------------
– 6 – IEC 62541-5:2020 © IEC 2020

B.4.11 FromState.................................................................................................... 127

B.4.12 ToState........................................................................................................ 128

B.4.13 HasCause .................................................................................................... 128

B.4.14 HasEffect ..................................................................................................... 129

B.4.15 HasSubStateMachine .................................................................................. 129

B.4.16 TransitionEventType .................................................................................... 130

B.4.17 AuditUpdateStateEventType ........................................................................ 130

B.4.18 Special Restrictions on subtyping StateMachines ..
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.