SIST EN 62541-4:2015

OPC Unified Architecture - Part 4: Services (IEC 62541-4:2015)

This part of IEC 62541 defines the OPC Unified Architecture (OPC UA) Services. The
Services described are the collection of abstract Remote Procedure Calls (RPC) that are
implemented by OPC UA Servers and called by OPC UA Clients. All interactions between
OPC UA Clients and Servers occur via these Services. The defined Services are considered
abstract because no particular RPC mechanism for implementation is defined in this part.
IEC 62541-6 specifies one or more concrete mappings supported for implementation. For
example, one mapping in IEC 62541-6 is to XML Web Services. In that case the Services
described in this part appear as the Web service methods in the WSDL contract.
Not all OPC UA Servers will need to implement all of the defined Services. IEC 62541-7
defines the Profiles that dictate which Services need to be implemented in order to be
compliant with a particular Profile.

OPC unified architecture - Part 4: Services (IEC 62541-4:2015)

Architecture unifiée OPC - Partie 4: Services (IEC 62541-4:2015)

L'IEC 62541-4:2015 définit les Services de l'Architecture Unifiée OPC (OPC UA). Les Services décrits sont le recueil d'appels de procédures abstraites distantes (RPC - Remote Procedure Calls) qui sont mises en oeuvre par les Serveurs OPC UA et qui sont appelées par les Clients OPC UA. Cette deuxième édition annule et remplace la première édition parue en 2011. Elle constitue une révision technique. Cette édition inclut les modifications suivantes:
- Mise à jour de 6.4 Redondance.
- Clarifications pour les scénarios Publish et Reconnect.
- Gestion des modifications de MonitoredItem dans les scénarios de courte interruption du réseau.
- Mise à jour de 6.1.3 Déterminer si un Certificat est fiable.
- Révision de la définition des paramètres semaphoreFile et isOnline dans le Service.
- Services ModifySubscription et ModifyMonitoredItems.

Enotna arhitektura OPC - 4. del: Storitve (IEC 62541-4:2015)

Ta del standarda IEC 62541 določa storitve enotne arhitekture OPC (OPC UA). Opisane storitve so zbirka abstraktnih klicev oddaljenih procedur (RPC), ki jih izvajajo strežniki enotne arhitekture OPC, kličejo pa odjemalci enotne arhitekture OPC. Vsi odnosi med odjemalci in strežniki enotne arhitekture OPC potekajo prek teh storitev. Opredeljene storitve se štejejo za abstraktne, ker v tem delu ni opredeljen poseben mehanizem klicev oddaljenih procedur za izvajanje. IEC 62541-6 določa eno ali več konkretnih načrtovanj, ki imajo podporo za izvajanje. Eno načrtovanje v standardu IEC 62541-6 na primer zajema spletne storitve XML. V tem primeru se storitve iz tega dela v pogodbi WSDL pojavijo kot metode spletnih storitev. Vsi strežniki enotne arhitekture OPC ne bodo nujno izvajali vseh opredeljenih storitev. Standard IEC 62541-7 opredeljuje profile, ki določajo, katere storitve se morajo izvajati, da bodo skladne z določenim profilom.

General Information

• Status: Withdrawn
• Publication Date: 09-Sep-2015
• Withdrawal Date: 30-May-2023
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.240.50 - IT applications in industry
• Technical Committee: MOV - Measuring equipment for electromagnetic quantities
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 30-May-2023
• Due Date: 22-Jun-2023
• Completion Date: 31-May-2023
• Mandate: M/490 - Standardisation mandate to the European Standardisation Organisations (ESOs) to support European Smart Grid deployment
• Ref Project: EN 62541-4:2015 - OPC unified architecture - Part 4: Services

Relations

• Replaces: SIST EN 62541-4:2012 - OPC unified architecture - Part 4: Services (IEC 62541-4:2011)
• Effective Date: 10-Dec-2013
• Replaced By: SIST EN IEC 62541-4:2020 - OPC Unified Architecture - Part 4: Services (IEC 62541-4:2020)
• Effective Date: 22-Sep-2020

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 62541-4:2015
01-oktober-2015
1DGRPHãþD
SIST EN 62541-4:2012
Enotna arhitektura OPC - 4. del: Storitve (IEC 62541-4:2015)
OPC Unified Architecture - Part 4: Services (IEC 62541-4:2015)
OPC unified architecture - Part 4: Services (IEC 62541-4:2015)
Architecture unifiée OPC - Partie 4: Services (IEC 62541-4:2015)
Ta slovenski standard je istoveten z: EN 62541-4:2015
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
SIST EN 62541-4:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 62541-4:2015

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SIST EN 62541-4:2015


EUROPEAN STANDARD EN 62541-4

NORME EUROPÉENNE

EUROPÄISCHE NORM
May 2015
ICS 35.100; 25.040.40 Supersedes EN 62541-4:2011
English Version
OPC unified architecture - Part 4: Services
(IEC 62541-4:2015)
Architecture unifiée OPC - Partie 4: Services OPC Unified Architecture - Teil 4: Dienste
(IEC 62541-4:2015) (IEC 62541-4:2015)
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 62541-4:2015 E

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SIST EN 62541-4:2015
EN 62541-4:2015 - 2 -
Foreword
The text of document 65E/375/CDV, future edition 2 of IEC 62541-4, 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
EN 62541-4:2015.
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 62541-4:2011.
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 62541-4:2015 was approved by CENELEC as a European
Standard without any modification.

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SIST EN 62541-4:2015
- 3 - EN 62541-4:2015
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/TR 62541-2 - OPC unified architecture - CLC/TR 62541-2 -
Part 2: Security model
IEC 62541-3 -  OPC unified architecture - EN 62541-3 -
Part 3: Address Space Model
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 62541-7 -  OPC unified architecture - EN 62541-7 -
Part 7: Profiles
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
IEC 62541-13 -  OPC unified architecture - EN 62541-13 -
Part 13: Aggregates

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SIST EN 62541-4:2015

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SIST EN 62541-4:2015




IEC 62541-4

®


Edition 2.0 2015-03




INTERNATIONAL



STANDARD




NORME



INTERNATIONALE
colour

inside










OPC Unified Architecture –

Part 4: Services




Architecture Unifiée OPC –

Partie 4: Services

















INTERNATIONAL

ELECTROTECHNICAL

COMMISSION


COMMISSION

ELECTROTECHNIQUE


INTERNATIONALE




ICS 25.040.40; 35.100 ISBN 978-2-8322-2369-7



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

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SIST EN 62541-4:2015
– 2 – IEC 62541-4:2015 © IEC 2015
CONTENTS
FOREWORD . 12
1 Scope . 14
2 Normative references . 14
3 Terms, definitions and conventions . 15
3.1 Terms and definitions . 15
3.2 Abbreviations and symbols . 15
3.3 Conventions for Service definitions . 16
4 Overview . 17
4.1 Service Set model . 17
4.2 Request/response Service procedures . 21
5 Service Sets . 21
5.1 General . 21
5.2 Service request and response header . 21
5.3 Service results . 21
5.4 Discovery Service Set . 23
5.4.1 Overview . 23
5.4.2 FindServers . 24
5.4.3 GetEndpoints . 25
5.4.4 RegisterServer . 28
5.5 SecureChannel Service Set . 31
5.5.1 Overview . 31
5.5.2 OpenSecureChannel . 32
5.5.3 CloseSecureChannel . 35
5.6 Session Service Set . 36
5.6.1 Overview . 36
5.6.2 CreateSession . 36
5.6.3 ActivateSession . 40
5.6.4 CloseSession . 43
5.6.5 Cancel . 43
5.7 NodeManagement Service Set . 44
5.7.1 Overview . 44
5.7.2 AddNodes . 44
5.7.3 AddReferences . 46
5.7.4 DeleteNodes . 47
5.7.5 DeleteReferences . 48
5.8 View Service Set . 49
5.8.1 Overview . 49
5.8.2 Browse . 50
5.8.3 BrowseNext . 52
5.8.4 TranslateBrowsePathsToNodeIds . 54
5.8.5 RegisterNodes . 56
5.8.6 UnregisterNodes . 57
5.9 Query Service Set . 57
5.9.1 Overview . 57
5.9.2 Querying Views . 58
5.9.3 QueryFirst . 58

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SIST EN 62541-4:2015
IEC 62541-4:2015 © IEC 2015 – 3 –
5.9.4 QueryNext . 62
5.10 Attribute Service Set . 63
5.10.1 Overview . 63
5.10.2 Read . 63
5.10.3 HistoryRead . 65
5.10.4 Write . 67
5.10.5 HistoryUpdate . 69
5.11 Method Service Set . 70
5.11.1 Overview . 70
5.11.2 Call . 71
5.12 MonitoredItem Service Set . 73
5.12.1 MonitoredItem model . 73
5.12.2 CreateMonitoredItems . 79
5.12.3 ModifyMonitoredItems . 81
5.12.4 SetMonitoringMode . 83
5.12.5 SetTriggering . 84
5.12.6 DeleteMonitoredItems . 85
5.13 Subscription Service Set . 86
5.13.1 Subscription model . 86
5.13.2 CreateSubscription . 93
5.13.3 ModifySubscription . 94
5.13.4 SetPublishingMode . 95
5.13.5 Publish . 96
5.13.6 Republish . 98
5.13.7 TransferSubscriptions . 98
5.13.8 DeleteSubscriptions . 100
6 Service behaviours . 101
6.1 Security . 101
6.1.1 Overview . 101
6.1.2 Obtaining and Installing an Application Instance Certificate . 101
6.1.3 Determining if a Certificate is Trusted . 102
6.1.4 Creating a SecureChannel . 104
6.1.5 Creating a Session . 106
6.1.6 Impersonating a User . 107
6.2 Software Certificates . 107
6.2.1 Overview . 107
6.2.2 Obtaining and Installing a Software Certificate . 107
6.2.3 Validating a Software Certificate . 109
6.3 Auditing . 109
6.3.1 Overview . 109
6.3.2 General audit logs. 109
6.3.3 General audit Events . 109
6.3.4 Auditing for Discovery Service Set . 110
6.3.5 Auditing for SecureChannel Service Set . 110
6.3.6 Auditing for Session Service Set . 110
6.3.7 Auditing for NodeManagement Service Set . 111
6.3.8 Auditing for Attribute Service Set . 111
6.3.9 Auditing for Method Service Set . 111
6.3.10 Auditing for View, Query, MonitoredItem and Subscription Service Set . 112

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SIST EN 62541-4:2015
– 4 – IEC 62541-4:2015 © IEC 2015
6.4 Redundancy . 112
6.4.1 Redundancy overview . 112
6.4.2 Server redundancy overview . 112
6.4.3 Client redundancy . 116
6.4.4 Network redundancy . 116
6.5 Re-establishing connections . 117
7 Common parameter type definitions . 118
7.1 ApplicationDescription . 118
7.2 ApplicationInstanceCertificate . 118
7.3 BrowseResult . 119
7.4 ContentFilter . 119
7.4.1 ContentFilter structure . 119
7.4.2 ContentFilterResult . 120
7.4.3 FilterOperator . 121
7.4.4 FilterOperand parameters . 127
7.5 Counter . 128
7.6 ContinuationPoint . 129
7.7 DataValue . 129
7.7.1 General. 129
7.7.2 PicoSeconds . 130
7.7.3 SourceTimestamp . 130
7.7.4 ServerTimestamp . 130
7.7.5 StatusCode assigned to a value . 131
7.8 DiagnosticInfo . 131
7.9 EndpointDescription . 132
7.10 ExpandedNodeId . 133
7.11 ExtensibleParameter . 133
7.12 Index . 134
7.13 IntegerId . 134
7.14 MessageSecurityMode . 134
7.15 MonitoringParameters . 134
7.16 MonitoringFilter parameters . 135
7.16.1 Overview . 135
7.16.2 DataChangeFilter . 136
7.16.3 EventFilter . 136
7.16.4 AggregateFilter . 139
7.17 MonitoringMode . 140
7.18 NodeAttributes parameters . 140
7.18.1 Overview . 140
7.18.2 ObjectAttributes parameter . 141
7.18.3 VariableAttributes parameter . 141
7.18.4 MethodAttributes parameter . 142
7.18.5 ObjectTypeAttributes parameter . 142
7.18.6 VariableTypeAttributes parameter . 142
7.18.7 ReferenceTypeAttributes parameter . 143
7.18.8 DataTypeAttributes parameter . 143
7.18.9 ViewAttributes parameter . 143
7.19 NotificationData parameters . 144
7.19.1 Overview . 144

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SIST EN 62541-4:2015
IEC 62541-4:2015 © IEC 2015 – 5 –
7.19.2 DataChangeNotification parameter . 144
7.19.3 EventNotificationList parameter . 145
7.19.4 StatusChangeNotification parameter . 145
7.20 NotificationMessage . 145
7.21 NumericRange . 146
7.22 QueryDataSet . 147
7.23 ReadValueId . 147
7.24 ReferenceDescription. 148
7.25 RelativePath . 149
7.26 RequestHeader . 149
7.27 ResponseHeader . 151
7.28 ServiceFault . 151
7.29 SessionAuthenticationToken . 151
7.30 SignatureData . 153
7.31 SignedSoftwareCertificate . 153
7.32 SoftwareCertificate . 153
7.33 StatusCode . 154
7.33.1 General. 154
7.33.2 Common StatusCodes . 156
7.34 TimestampsToReturn . 159
7.35 UserIdentityToken parameters . 159
7.35.1 Overview . 159
7.35.2 AnonymousIdentityToken . 160
7.35.3 UserNameIdentityToken . 160
7.35.4 X509IdentityTokens . 161
7.35.5 IssuedIdentityToken . 161
7.36 UserTokenPolicy . 162
7.37 ViewDescription . 163
Annex A (informative) BNF definitions . 164
A.1 Overview over BNF . 164
A.2 BNF of RelativePath . 164
A.3 BNF of NumericRange . 165
Annex B (informative) Content Filter and Query Examples . 166
B.1 Simple ContentFilter examples . 166
B.1.1 Overview . 166
B.1.2 Example 1. 166
B.1.3 Example 2. 167
B.2 Complex Examples of Query Filters . 167
B.2.1 Overview . 167
B.2.2 Used type model . 168
B.2.3 Example Notes . 170
B.2.4 Example 1. 171
B.2.5 Example 2. 172
B.2.6 Example 3. 173
B.2.7 Example 4. 175
B.2.8 Example 5. 176
B.2.9 Example 6. 178
B.2.10 Example 7. 179
B.2.11 Example 8.
...