IEC 62541-7:2015

OPC unified architecture - Part 7: Profiles

IEC 62541-7:2015 describes the OPC Unified Architecture (OPC UA) Profiles. The Profiles in this document are used to segregate features with regard to testing of OPC UA products and the nature of the testing (tool based or lab based). This includes the testing performed by the OPC Foundation provided OPC UA CTT (a self-test tool) and by the OPC Foundation provided Independent certification test labs. It is also defining functionality that can only be tested in an a lab and defining the grouping of functionality that is to be used when testing OPC UA products either in a lab or using automated tools. This second edition cancels and replaces the first edition published in 2012 and constitutes a technical revision. It includes the following changes:
- Added a large number of new Facets to cover additional functional areas of OPC UA. Most significantly:
- Facets for Historical Access;
- Facets for Aggregates;
- Facets for HTTPs;
- New Security Facets;
- New User Token Facet that supports anonymous access;
- Best Practice Facets as well as New Security Policy for asymmetric key length > 2048.

Architecture unifiée OPC - Partie 7: Profils

L'IEC 62541-7:2015 décrit les Profils de l'Architecture unifiée OPC (OPC UA). Les Profils du présent document permettent de dissocier les caractéristiques relatives aux essais des produits OPC UA, ainsi que la nature des essais (basés sur un outil ou en laboratoire). Ceci inclut les essais effectués par l'outil d'essai de conformité (CTT) OPC UA de la Fondation OPC (outil autonome pour les essais), ainsi que les essais réalisés par des laboratoires de certification indépendants de cette même fondation. Elle inclut la définition d'une fonctionnalité qui ne peut être soumise à l'essai qu'en laboratoire, ainsi que la définition du regroupement d'une fonctionnalité à appliquer lors des essais de produits OPC UA en laboratoire ou en utilisant des outils automatisés. Cette deuxième édition annule et remplace la première édition parue en 2012. Elle constitue une révision technique. Cette édition inclut les modifications suivantes:
- Ajout d'un nombre important de nouvelles Facettes pour couvrir des additional functional areas of OPC UA. Plus particulièrement:
- Facettes pour l'Accès à l'historique;
- Facettes pour les Agrégats;
- Facettes pour les HTTP;
- Nouvelles facettes de sécurité;
- Nouvelle facette de Jeton Utilisateur prenant en charge l'accès Anonyme et Facettes Meilleures Pratiques;
- Et une Nouvelle Politique de Sécurité pour longueur de clé asymétrique > 2048.

General Information

• Status: Published
• Publication Date: 24-Mar-2015
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100.05 - Multilayer applications
• Technical Committee: SC 65E - Devices and integration in enterprise systems
• Drafting Committee: WG 8 - TC 65/SC 65E/WG 8
• Current Stage: DELPUB - Deleted Publication
• Start Date: 22-Jun-2020
• Completion Date: 29-Sep-2017

Relations

• Revises: IEC 62541-7:2012 - OPC unified architecture - Part 7: Profiles
• Effective Date: 05-Sep-2023
• Revised: IEC 62541-7:2020 - OPC Unified Architecture - Part 7: Profiles
• Effective Date: 05-Sep-2023

Overview

IEC 62541-7:2015 is an international standard that defines the profiles for the OPC Unified Architecture (OPC UA). The document establishes the framework for segregating OPC UA features based on their testing requirements-either tool-based or laboratory-based-to ensure consistent product conformance. This second edition, a technical revision of the 2012 edition, introduces new functional facets, including advanced security features, historical access, and support for HTTPS, enhancing the reliability and interoperability of OPC UA implementations.

This standard is fundamental for developers, testers, and certification bodies focusing on OPC UA products, providing a structured methodology for defining and verifying compliance through clearly defined profiles and conformance units.

Key Topics

• OPC UA Profiles and Conformance Units
  IEC 62541-7 categorizes OPC UA functionality into conformance units that bundle related features for practical testing. These units streamline the certification process and clarify the scope of functionality under evaluation.

• Testing Framework
  The standard differentiates between testing methods: automated tool-based tests using OPC Foundation's OPC UA Certification Test Tool (CTT) and rigorous laboratory-based assessments performed by independent certification labs.

• New Functional Facets
  Key additions include facets for:

  • Historical Access, enabling the querying and manipulation of historical data within OPC UA servers.
  • Aggregates, supporting computation over datasets.
  • HTTPS support, improving secure communication channels.
  • Enhanced Security Facets, including policies for asymmetric key lengths beyond 2048 bits.
  • User Token facet with support for anonymous access.
  • Best Practice Facets which guide secure and performant implementation strategies.

• Profile Categories
  Profiles are organized to reflect different application scenarios, such as embedded devices or full-fledged server capabilities, allowing implementers to target specific functionalities tailored to their systems.

Applications

• OPC UA Product Development
  Vendors use IEC 62541-7 to align their products with internationally recognized profiles, ensuring their offerings are compatible with industry standards and interoperable with other OPC UA-compliant products.

• Certification and Compliance Testing
  OPC UA certification labs employ the detailed conformance units to systematically verify a product’s adherence to required profiles, supporting reliable operation in industrial environments.

• Industrial Automation and Control
  The standard’s focus on historical data access and advanced security makes it vital for sectors such as manufacturing, energy, and infrastructure where robust, traceable, and secure data exchange is paramount.

• Embedded Systems
  Profiles targeting nano and micro embedded device servers assist manufacturers in implementing OPC UA on constrained hardware platforms without compromising essential features.

Related Standards

IEC 62541-7:2015 is part of the broader IEC 62541 series covering OPC UA. Key related standards include:

• IEC 62541-1: OPC UA Overview and Concepts
  Provides foundational knowledge on OPC UA architecture and principles, essential for understanding the profiles defined in Part 7.

• IEC 62541-4: Services
  Details the OPC UA services, which are grouped within the conformance units of Part 7.

• IEC 62541-5: Information Model
  Defines the OPC UA information modeling approach that underlies many profile features.

• IEC 62541-3: Address Space Model
  Integral for the structure of information representation referenced in various profiles.

These interconnected standards create a comprehensive framework ensuring OPC UA’s functionality, interoperability, and security across diverse industrial applications.

---

By implementing and adhering to IEC 62541-7:2015, organizations can ensure their OPC UA products meet stringent industry requirements, support scalable and secure communication, and facilitate seamless integration within the global automation ecosystem. This contributes to enhanced system reliability, operational efficiency, and future-proof investments in industrial communication technology.

Standards Content (Sample)

IEC 62541-7 ®
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 7: Profiles
Architecture unifiée OPC –
Partie 7: Profils
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IEC 62541-7 ®
Edition 2.0 2015-03
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
OPC unified architecture –
Part 7: Profiles
Architecture unifiée OPC –
Partie 7: Profils
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100 ISBN 978-2-8322-2372-7

– 2 – IEC 62541-7:2015 © IEC 2015
CONTENTS
FOREWORD . 10
1 Scope . 12
2 Normative references . 12
3 Terms, definitions, and conventions . 13
3.1 Terms and definitions . 13
3.2 Abbreviations . 14
4 Overview . 14
4.1 General . 14
4.2 ConformanceUnit . 15
4.3 Profiles . 15
4.4 Profile Categories . 16
5 ConformanceUnits . 16
5.1 Overview. 16
5.2 Services . 17
5.3 Transport and communication related features . 28
5.4 Information Model and AddressSpace related features . 36
5.5 Miscellaneous . 55
6 Profiles . 56
6.1 Overview. 56
6.2 Profile list . 56
6.3 Conventions for Profile definitions . 62
6.4 Applications . 62
6.5 Profile tables . 64
6.5.1 Introduction . 64
6.5.2 Core Server Facet . 64
6.5.3 Base Server Behaviour Facet . 65
6.5.4 Attribute WriteMask Server Facet . 65
6.5.5 File Access Server Facet . 66
6.5.6 Documentation Server Facet . 66
6.5.7 Embedded DataChange Subscription Server Facet . 66
6.5.8 Standard DataChange Subscription Server Facet . 67
6.5.9 Enhanced DataChange Subscription Server Facet . 67
6.5.10 Data Access Server Facet . 68
6.5.11 ComplexType Server Facet . 68
6.5.12 Standard Event Subscription Server Facet . 68
6.5.13 Address Space Notifier Server Facet . 69
6.5.14 A & C Base Condition Server Facet . 69
6.5.15 A & C Address Space Instance Server Facet . 70
6.5.16 A & C Enable Server Facet . 70
6.5.17 A & C Alarm Server Facet . 70
6.5.18 A & C Acknowledgeable Alarm Server Facet . 70
6.5.19 A & C Exclusive Alarming Server Facet . 71
6.5.20 A & C Non-Exclusive Alarming Server Facet . 71
6.5.21 A & C Previous Instances Server Facet . 71
6.5.22 A & C Dialog Server Facet . 72
6.5.23 A & E Wrapper Facet . 72

6.5.24 Method Server Facet . 73
6.5.25 Auditing Server Facet . 73
6.5.26 Node Management Server Facet. 73
6.5.27 Client Redundancy Server Facet . 74
6.5.28 Redundancy Transparent Server Facet . 74
6.5.29 Redundancy Visible Server Facet . 74
6.5.30 Historical Raw Data Server Facet . 75
6.5.31 Historical Aggregate Server Facet . 75
6.5.32 Historical Access Structured Data Server Facet . 76
6.5.33 Historical Data AtTime Server Facet . 77
6.5.34 Historical Access Modified Data Server Facet . 77
6.5.35 Historical Annotation Server Facet . 77
6.5.36 Historical Data Update Server Facet . 77
6.5.37 Historical Data Replace Server Facet . 78
6.5.38 Historical Data Insert Server Facet . 78
6.5.39 Historical Data Delete Server Facet . 78
6.5.40 Base Historical Event Server Facet . 78
6.5.41 Historical Event Update Server Facet . 79
6.5.42 Historical Event Replace Server Facet . 79
6.5.43 Historical Event Insert Server Facet . 79
6.5.44 Historical Event Delete Server Facet . 79
6.5.45 Aggregate Subscription Server Facet . 79
6.5.46 Nano Embedded Device Server Profile . 80
6.5.47 Micro Embedded Device Server Profile . 81
6.5.48 Embedded UA Server Profile . 81
6.5.49 Standard UA Server Profile . 81
6.5.50 Core Client Facet. 82
6.5.51 Base Client Behaviour Facet . 82
6.5.52 Discovery Client Facet . 83
6.5.53 AddressSpace Lookup Client Facet . 83
6.5.54 Entry-Level Support Client Facet . 83
6.5.55 Multi-Server Client Connection Facet . 84
6.5.56 File Access Client Facet . 84
6.5.57 Documentation – Client . 84
6.5.58 Attribute Read Client Facet . 84
6.5.59 Attribute Write Client Facet . 85
6.5.60 DataChange Subscriber Client Facet . 85
6.5.61 DataAccess Client Facet . 85
6.5.62 Event Subscriber Client Facet. 85
6.5.63 Notifier and Source Hierarchy Client Facet . 86
6.5.64 A & C Base ConditionClient Facet . 86
6.5.65 A & C Address Space Instance Client Facet . 86
6.5.66 A & C Enable Client Facet . 87
6.5.67 A & C Alarm Client Facet . 87
6.5.68 A & C Exclusive Alarming Client Facet . 87
6.5.69 A & C Non-Exclusive Alarming Client Facet . 87
6.5.70 A & C Previous Instances Client Facet . 88
6.5.71 A & C Dialog Client Facet . 88
6.5.72 A & E Proxy Facet . 88

– 4 – IEC 62541-7:2015 © IEC 2015
6.5.73 Method Client Facet. 89
6.5.74 Auditing Client Facet . 90
6.5.75 Node Management Client Facet . 90
6.5.76 Advanced Type Programming Client Facet . 90
6.5.77 Diagnostic Client Facet . 90
6.5.78 Redundant Client Facet . 91
6.5.79 Redundancy Switch Client Facet . 91
6.5.80 Historical Access Client Facet . 91
6.5.81 Historical Annotation Client Facet . 91
6.5.82 Historical Data AtTime Client Facet . 91
6.5.83 Historical Aggregate Client Facet . 92
6.5.84 Historical Data Update Client Facet . 93
6.5.85 Historical Data Replace Client Facet. 93
6.5.86 Historical Data Insert Client Facet . 93
6.5.87 Historical Data Delete Client Facet . 93
6.5.88 Historical Access Client Server Timestamp Facet . 93
6.5.89 Historical Access Modified Data Client Facet . 94
6.5.90 Structured Data AtTime Client Facet . 94
6.5.91 Historical Structured Data Access Client Facet . 94
6.5.92 Historical Structured Data Modified Client Facet . 94
6.5.93 Historical Structured Data Delete Client Facet . 94
6.5.94 Historical Structured Data Update Client Facet . 95
6.5.95 Historical Structured Data Replace Client Facet . 95
6.5.96 Historical Structured Data Insert Client Facet . 95
6.5.97 Historical Events Client Facet . 95
6.5.98 Historical Event Update Client Facet. 95
6.5.99 Historical Event Replace Client Facet . 96
6.5.100 Historical Event Delete Client Facet . 96
6.5.101 Historical Event Insert Client Facet . 96
6.5.102 Aggregate Subscriber Client Facet . 96
6.5.103 User Token – Anonymous Facet . 98
6.5.104 User Token – User Name Password Server Facet . 98
6.5.105 User Token – X509 Certificate Server Facet . 98
6.5.106 User Token – Issued Token Server Facet . 98
6.5.107 User Token – Issued Token Windows Server Facet . 98
6.5.108 User Token – User Name Password Client Facet . 99
6.5.109 User Token – X509 Certificate Client Facet . 99
6.5.110 User Token – Issued Token Client Facet . 99
6.5.111 User Token – Issued Token Windows Client Facet . 99
6.5.112 UA-TCP UA-SC UA Binary . 99
6.5.113 SOAP-HTTP WS-SC UA XML . 100
6.5.114 SOAP-HTTP WS-SC UA Binary . 100
6.5.115 SOAP-HTTP WS-SC UA XML-UA Binary . 100
6.5.116 HTTPS UA Binary . 100
6.5.117 HTTPS UA XML . 101
6.5.118 Security User Access Control Full . 101
6.5.119 Security User Access Control Base. 101
6.5.120 Security Time Synchronization . 101
6.5.121 Best Practice – Audit Events . 102

6.5.122 Best Practice – Alarm Handling . 102
6.5.123 Best Practice – Random Numbers . 102
6.5.124 Best Practice – Timeouts . 102
6.5.125 Best Practice – Administrative Access . 102
6.5.126 Best Practice – Strict Message Handling . 103
6.5.127 Best Practice – Audit Events Client . 103
6.5.128 SecurityPolicy – None . 103
6.5.129 SecurityPolicy – Basic128Rsa15 . 103
6.5.130 SecurityPolicy – Basic256 . 104
6.5.131 SecurityPolicy – Basic256Sha256 . 104
6.5.132 TransportSecurity – TLS 1.0 . 105
6.5.133 TransportSecurity – TLS 1.1 . 105
6.5.134 TransportSecurity – TLS 1.2 . 105
Bibliography . 107

Figure 1 – Profile – ConformanceUnit – TestCases . 15
Figure 2 – HMI Client sample . 63
Figure 3 – Embedded Server sample . 63
Figure 4 – Standard UA Server sample . 64

Table 1 – ProfileCategories. 16
Table 2 – ConformanceGroups . 17
Table 3 – Discovery Services . 18
Table 4 – Session Services . 19
Table 5 – Node Management Services . 20
Table 6 – View Services . 21
Table 7 – Attribute Services . 22
Table 8 – Method Services . 23
Table 9 – Monitored Item Services . 24
Table 10 – Subscription Services . 27
Table 11 – Security . 29
Table 12 – Protocol and Encoding . 36
Table 13 – Base information . 37
Table 14 – Address Space model . 40
Table 15 – Data Access . 42
Table 16 – Alarms and Conditions . 43
Table 17 – Historical Access . 45
Table 18 – Aggregates . 49
Table 19 – Auditing . 55
Table 20 – Redundancy . 55
Table 21 – Miscellaneous . 56
Table 22 – Profile list . 58
Table 23 – Core Server Facet . 65
Table 24 – Base Server Behaviour Facet . 65

– 6 – IEC 62541-7:2015 © IEC 2015
Table 25 – Attribute WriteMask Server Facet . 66
Table 26 –File Access Server Facet . 66
Table 27 – Documentation Server Facet . 66
Table 28 – Embedded DataChange Subscription Server Facet . 67
Table 29 – Standard DataChange Subscription Server Facet . 67
Table 30 – Enhanced DataChange Subscription Server Facet. 67
Table 31 – Data Access Server Facet . 68
Table 32 – ComplexType Server Facet . 68
Table 33 – Standard Event Subscription Server Facet . 69
Table 34 – Address Space Notifier Server Facet . 69
Table 35 – A & C Base Condition Server Facet . 69
Table 36 – A & C Address Space Instance Server Facet . 70
Table 37 – A & C Enable Server Facet . 70
Table 38 – A & C Alarm Server Facet . 70
Table 39 – A & C Acknowledgeable Alarm Server Facet . 71
Table 40 – A & C Exclusive Alarming Server Facet . 71
Table 41 – A & C Non-Exclusive Alarming Server Facet . 71
Table 42 – A & C Previous Instances Server Facet . 72
Table 43 – A & C Dialog Server Facet . 72
Table 44 – A & E Wrapper Facet . 73
Table 45 – Method Server Facet . 73
Table 46 – Auditing Server Facet . 73
Table 47 – Node Management Server Facet . 74
Table 48 – Client Redundancy Server Facet . 74
Table 49 – Redundancy Transparent Server Facet. 74
Table 50 – Redundancy Visible Server Facet . 75
Table 51 – Historical Raw Data Server Facet . 75
Table 52 – Historical Aggregate Server Facet . 76
Table 53 – Historical Access Structured Data Server Facet. 77
Table 54 – Historical Data AtTime Server Facet . 77
Table 55 – Historical Access Modified Data Server Facet . 77
Table 56 – Historical Annotation Server Facet . 77
Table 57 – Historical Data Update Server Facet . 78
Table 58 – Historical Data Replace Server Facet . 78
Table 59 – Historical Data Insert Server Facet . 78
Table 60 – Historical Data Delete Server Facet . 78
Table 61 – Base Historical Event Server Facet . 79
Table 62 – Historical Event Update Server Facet . 79
Table 63 – Historical Event Replace Server Facet . 79
Table 64 – Historical Event Insert Server Facet . 79
Table 65 – Historical Event Delete Server Facet . 79
Table 66 – Aggregate Subscription Server Facet . 80
Table 67 – Nano Embedded Device Server Profile . 81

Table 68 – Micro Embedded Device Server Profile. 81
Table 69 – Embedded UA Server Profile . 81
Table 70 – Standard UA Server Profile . 82
Table 71 – Core Client Facet . 82
Table 72 – Base Client Behaviour Facet . 83
Table 73 – Discovery Client Facet. 83
Table 74 – AddressSpace Lookup Client Facet . 83
Table 75 – Entry-Level SupportClient Facet . 84
Table 76 – Multi-Server Client Connection Facet . 84
Table 77 –File Access Client Facet . 84
Table 78 – Documentation – Client . 84
Table 79 – Attribute Read Client Facet . 84
Table 80 – Attribute Write Client Facet . 85
Table 81 – DataChange Subscriber Client Facet . 85
Table 82 – DataAccess Client Facet . 85
Table 83 – Event Subscriber Client Facet . 86
Table 84 – Notifier and Source Hierarchy Client Facet . 86
Table 85 – A & C Base Condition Client Facet . 86
Table 86 – A & C Address Space Instance Client Facet . 86
Table 87 – A & C Enable Client Facet . 87
Table 88 – A & C Alarm Client Facet . 87
Table 89 – A & C Exclusive Alarming Client Facet . 87
Table 90 – A & C Non-Exclusive Alarming Client Facet . 88
Table 91 – A & C Previous Instances Client Facet . 88
Table 92 – A & C Dialog Client Facet . 88
Table 93 – A & E Proxy Facet . 89
Table 94 – Method Client Facet . 89
Table 95 – Auditing Client Facet . 90
Table 96 – Node Management Client Facet. 90
Table 97 – Advanced Type Programming Client Facet . 90
Table 98 – Diagnostic Client Facet . 90
Table 99 – Redundant Client Facet . 91
Table 100 – Redundancy Switch Client Facet . 91
Table 101 – Historical Access Client Facet . 91
Table 102 – Historical Annotation Client Facet . 91
Table 103 – Historical Data AtTime Client Facet . 92
Table 104 – Historical Aggregate Client Facet . 92
Table 105 – Historical Data Update Client Facet . 93
Table 106 – Historical Data Replace Client Facet . 93
Table 107 – Historical Data Insert Client Facet . 93
Table 108 – Historical Data Delete Client Facet . 93
Table 109 – Historical Access Client Server Timestamp Facet . 93
Table 110 – Historical Access Modified Data Client Facet . 94

– 8 – IEC 62541-7:2015 © IEC 2015
Table 111 – Historical Structured Data AtTime Client Facet . 94
Table 112 – Historical Structured Data Access Client Facet . 94
Table 113 – Historical Structured Data Modified Client Facet . 94
Table 114 – Historical Structured Data Delete Client Facet . 95
Table 115 – Historical Structured Data Update Client Facet . 95
Table 116 – Historical Structured Data Replace Client Facet . 95
Table 117 – Historical Structured Data Insert Client Facet . 95
Table 118 – Historical Events Client Facet . 95
Table 119 – Historical Event Update Client Facet . 96
Table 120 – Historical Event Replace Client Facet . 96
Table 121 – Historical Event Delete Client Facet . 96
Table 122 – Historical Event Insert Client Facet . 96
Table 123 – Aggregate Subscriber Client Facet . 97
Table 124 – User Token – Anonymous Facet . 98
Table 125 – User Token – User Name Password Server Facet . 98
Table 126 – User Token – X509 Certificate Server Facet . 98
Table 127 – User Token – Issued Token Server Facet . 98
Table 128 – User Token – Issued Token Windows Server Facet . 99
Table 129 – User Token – User Name Password Client Facet. 99
Table 130 – User Token – X509 Certificate Client Facet . 99
Table 131 – User Token – Issued Token Client Facet . 99
Table 132 – User Token – Issued Token Windows Client Facet . 99
Table 133 – UA-TCP UA-SC UA Binary. 100
Table 134 – SOAP-HTTP WS-SC UA XML . 100
Table 135 – SOAP-HTTP WS-SC UA Binary . 100
Table 136 – SOAP-HTTP WS-SC UA XML-UA Binary . 100
Table 137 – HTTPS UA Binary . 101
Table 138 – HTTPS UA XML . 101
Table 139 – Security User Access Control Full . 101
Table 140 – Security User Access Control Base . 101
Table 141 – Security Time Synchronization . 102
Table 142 – Best Practice – Audit Events . 102
Table 143 – Best Practice – Alarm Handling . 102
Table 144 – Best Practice – Random Numbers . 102
Table 145 – Best Practice – Timeouts . 102
Table 146 – Best Practice – Administrative Access . 103
Table 147 – Best Practice – Strict Message Handling . 103
Table 148 – Best Practice – Audit Events Client . 103
Table 149 – SecurityPolicy – None . 103
Table 150 – SecurityPolicy – Basic128Rsa15 . 104
Table 151 – SecurityPolicy – Basic256 . 104
Table 152 – SecurityPolicy – Basic256Sha256 . 105
Table 153 – TransportSecurity – TLS 1.0 . 105

Table 154 – TransportSecurity – TLS 1.1 . 105
Table 155 – TransportSecurity – TLS 1.2 . 106

– 10 – IEC 62541-7:2015 © IEC 2015
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
OPC UNIFIED ARCHITECTURE –
Part 7: Profiles
FOREWORD
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