EN IEC 62769-2:2021

Field Device Integration (FDI) - Part 2: FDI Client

This part of IEC 62769 specifies the FDI Client. The overall FDI architecture is illustrated in Figure 1. The architectural components that are within the scope of this document have been highlighted in this figure. [Figure 1 - FDI architecture diagram]

Feldgeräteintegration (FDI) - Teil 2: FDI-Client

Intégration des appareils de terrain (FDI) - Partie 2: Client FDI

IEC 62769-2:2021 est disponible sous forme de IEC 62769-2:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente . L'IEC 62769-2:2021 définit le client FDI. L'architecture FDI complète est représentée à la Figure 1. Les composants architecturaux qui relèvent du domaine d'application du présent document ont été mis en évidence dans cette figure.

Integracija procesne naprave (FDI) - 2. del: Odjemalec FDI (IEC 62769-2:2021)

General Information

• Status: Published
• Publication Date: 25-Mar-2021
• ICS: 25.040.40 - Industrial process measurement and control
• ICS: 35.100 - Open systems interconnection (OSI)
• ICS: 35.100.05 - Multilayer applications
• Technical Committee: CLC/TC 65X - Industrial-process measurement, control and automation
• Drafting Committee: IEC/SC 65E - IEC_SC_65E
• Current Stage: 6060 - Document made available - Publishing
• Start Date: 26-Mar-2021
• Completion Date: 26-Mar-2021
• Ref Project: SIST EN IEC 62769-2:2021 - Field Device Integration (FDI) - Part 2: FDI Client (IEC 62769-2:2021)

Relations

• Replaces: EN 62769-2:2015 - Field Device Integration (FDI) - Part 2: FDI Client
• Effective Date: 07-Jun-2022
• Replaced By: EN IEC 62769-2:2023 - Field Device Integration (FDI®) - Part 2: Client
• Effective Date: 09-Nov-2021

Overview

EN IEC 62769-2:2021 (equivalent to IEC 62769-2:2021) defines the FDI Client component of the Field Device Integration (FDI) architecture. Part 2 focuses on how engineering tools and host systems interact with device-specific functionality via the FDI Client, and it details the services, models and runtime behaviors required to integrate field instrumentation consistently. This 2021 edition supersedes the 2015 version and is part of the multi-part FDI family that standardizes device integration for industrial automation.

Key technical topics and requirements

The standard specifies the FDI Client in technical detail, covering:

• Device Access Services: definitions for device and node models, services to read/write properties, device model services, locking and direct access mechanisms.
• Hosting Services: rules and services for hosting device-specific code and components on the FDI Client.
• User Interface Plug-in (UIP): lifecycle, instantiation rules, state machine, permissions and deployment for UIPs that provide device-specific UIs or functionality.
• Actions and Control Flow: action schema, sequences and request/response handling required for executing device operations.
• User Interface Description (UID): how UIDs are described and executed to present consistent, device-aware UIs across clients.
• Data types and XML Schema: normative XML schema annexes that define message, parameter and UI element structures used by the FDI Client.
• Interoperability and security considerations: integration and references to system security practices (see related standards such as IEC 62443 series).

These topics are expressed as formal service definitions, parameter types and state behaviors to ensure consistent implementation across vendors.

Practical applications and who uses this standard

FDI Client requirements are essential for:

• Automation vendors & OEMs who build engineering workstations, asset management tools or HMI/SCADA systems implementing FDI Clients.
• Device manufacturers packaging device descriptors, UIDs, and UIPs to be consumed by FDI Clients and Servers.
• System integrators and control engineers deploying field devices and needing consistent device configuration, diagnostics and commissioning workflows.
• Software developers implementing Device Access Services, UID execution engines, or UIP hosting capability.

Typical use cases include streamlined device commissioning, unified device configuration UIs across tools, secure access to device parameters, and deployment of device-specific applications (UIP) from FDI Server to Clients.

Related standards

Relevant companion and referenced standards:

• IEC 62769-1, -3, -4, -5, -6 (other FDI parts: Overview, Server, Packages, Information Model, Technology Mapping)
• IEC 62541 (OPC UA parts for address space and services)
• IEC 61804-3/-4 (related function block / interoperability)
• IEC 62443-3-3 (industrial network/system security)

Keywords: Field Device Integration (FDI), FDI Client, IEC 62769-2:2021, FDI architecture, Device Access Services, UIP, UID, industrial automation, OPC UA, device integration.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2021
Nadomešča:
SIST EN 62769-2:2015
Integracija procesne naprave (FDI) - 2. del: Odjemalec FDI (IEC 62769-2:2021)
Field Device Integration (FDI) - Part 2: FDI Client (IEC 62769-2:2021)
Feldgeräteintegration (FDI) - Teil 2: FDI-Client (IEC 62769-2:2021)
Intégration des appareils de terrain (FDI) - Partie 2: Client FDI (IEC 62769-2:2021)
Ta slovenski standard je istoveten z: EN IEC 62769-2:2021
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 IEC 62769-2

NORME EUROPÉENNE
EUROPÄISCHE NORM
March 2021
ICS 25.040.40; 35.100.05 Supersedes EN 62769-2:2015 and all of its amendments
and corrigenda (if any)
English Version
Field Device Integration (FDI) - Part 2: FDI Client
(IEC 62769-2:2021)
Intégration des appareils de terrain (FDI) - Partie 2: Client Feldgeräteintegration (FDI) - Teil 2: FDI-Client
FDI (IEC 62769-2:2021)
(IEC 62769-2:2021)
This European Standard was approved by CENELEC on 2021-03-12. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2021 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 62769-2:2021 E

European foreword
The text of document 65E/759/FDIS, future edition 2 of IEC 62769-2, 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 national (dop) 2021-12-12
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2024-03-12
document have to be withdrawn
This document supersedes EN 62769-2:2015 and all of its amendments and corrigenda (if any).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Endorsement notice
The text of the International Standard IEC 62769-2:2021 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following notes have to be added for the standards
indicated:
IEC 61804-3 NOTE Harmonized as EN IEC 61804-3
IEC 61804-4 NOTE Harmonized as EN IEC 61804-4
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements 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 1 Where 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 62443-3-3 2013 Industrial communication networks - EN IEC 62443-3-3 2019
Network and system security - Part 3-3:
System security requirements and security
levels
IEC 62541-3 - OPC Unified Architecture - Part 3: Address EN IEC 62541-3 -
Space Model
IEC 62541-4 - OPC Unified Architecture - Part 4: Services EN IEC 62541-4 -
IEC 62769-1 - Field Device Integration (FDI) - Part 1: EN 62769-1 -
Overview
IEC 62769-3 - Field Device Integration (FDI) - Part 3: EN 62769-3 -
Server
IEC 62769-4 - Field Device Integration (FDI) - Part 4: FDI EN 62769-4 -
Packages
IEC 62769-5 - Field Device Integration (FDI) - Part 5: EN 62769-5 -
Information Model
IEC 62769-6 - Field Device Integration (FDI) - Part 6: EN 62769-6 -
Technology Mapping
ISO 639 - Code for the representation of names of - -
languages
ISO 3166 - Codes for the representation of names of EN 23166 -
countries
ISO/IEC 15948 - Information technology - Computer - -
graphics and image processing - Portable
Network Graphics (PNG) - Functional
specification
IETF RFC 3066 - Tags for the Identification of Languages - -
XMLSchema-1 - XML Schema: Structures (available at - -
http://www.w3.org/TR/xmlschema-1/)
Publication Year Title EN/HD Year
XMLSchema-2 - XML Schema: Datatypes (available at - -
http://www.w3.org/TR/xmlschema-2/)

IEC 62769-2 ®
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Field device integration (FDI) –

Part 2: FDI Client
Intégration des appareils de terrain (FDI) –

Partie 2: Client FDI
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 25.040.40; 35.100.05 ISBN 978-2-8322-9309-6

– 2 – IEC 62769-2:2021 © IEC 2021
CONTENTS
FOREWORD . 10
INTRODUCTION . 12
1 Scope . 13
2 Normative references . 13
3 Terms, definitions, abbreviated terms and conventions . 14
3.1 Terms and definitions . 14
3.1.1 Terms used for Services . 14
3.1.2 Terms used for Device Access Services . 15
3.2 Abbreviated terms . 15
3.3 Conventions . 15
4 Overview . 16
5 FDI Client . 17
5.1 Device Access Services . 17
5.1.1 General . 17
5.1.2 Device Model . 17
5.1.3 Node model . 19
5.1.4 Services . 26
5.1.5 Base Property Services . 30
5.1.6 Device Model Services . 31
5.1.7 Locking Services . 44
5.1.8 Direct Access Services . 46
5.1.9 Data types . 48
5.2 Hosting Services . 53
5.2.1 General . 53
5.2.2 Services . 53
5.2.3 Parameter Type Definitions . 65
6 UIP . 67
6.1 UIP Services . 67
6.1.1 Services . 67
6.1.2 Parameter type definitions . 70
6.2 UIP instantiation rules . 72
6.3 UIP state machine. 72
6.3.1 States . 72
6.3.2 State transitions . 73
6.4 UIP permissions and restrictions . 74
6.4.1 Introduction . 74
6.4.2 Access to local file system . 74
6.4.3 Export/Import of files . 74
6.4.4 Inter-Process Communication (IPC) . 74
6.4.5 Open files based on MIME Type . 75
6.4.6 Access to resources . 75
6.5 UIP deployment . 75
6.5.1 UIP downloads from FDI Server . 75
6.5.2 UIP management on FDI Client. 76
7 Actions . 77

IEC 62769-2:2021 © IEC 2021 – 3 –
7.1 General . 77
7.2 Sequence diagram . 77
7.3 FDI Action schema definition. 80
8 User Interface Description (UID) . 81
8.1 Overview. 81
8.2 UID execution . 83
Annex A (normative) XML schema . 87
A.1 General . 87
A.2 AbortRequestT . 87
A.3 AccessT . 87
A.4 AcknowledgementRequestT . 88
A.5 ActionListT . 88
A.6 AbortingNotificationT . 89
A.7 ActionRequestT . 89
A.8 ActionResponseT . 90
A.9 ActionT . 91
A.10 AxisListT . 92
A.11 AxisT . 92
A.12 BitEnumerationItemListT . 93
A.13 BitEnumerationItemT . 93
A.14 ButtonListT . 94
A.15 ChartT . 94
A.16 ChartTypeT . 95
A.17 ColorNameT . 96
A.18 ColorT. 97
A.19 ColorValueT . 97
A.20 ColumnBreakT . 97
A.21 DateTimeDataT . 98
A.22 DelayMessageRequestT . 98
A.23 DiagramLineT . 99
A.24 EnumerationItemListT . 100
A.25 EnumerationItemT . 100
A.26 FormatSpecifierT . 101
A.27 GraphT . 101
A.28 GridT . 102
A.29 HandlingT . 102
A.30 ImageT . 103
A.31 InfoRequestT . 104
A.32 InputRequestT . 104
A.33 InputResponseT . 105
A.34 InputValueT . 105
A.35 InputValueTypeT . 106
A.36 LabelHelpT . 106
A.37 LabelT . 107
A.38 LineTypeT . 107
A.39 MenuT . 108
A.40 MenuReferenceT . 110
A.41 MenuStyleT. 111
A.42 NumericDataT . 111

– 4 – IEC 62769-2:2021 © IEC 2021
A.43 NumericTemplateT . 112
A.44 OptionListT . 112
A.45 OrientationT . 113
A.46 ParameterInputRequestT . 113
A.47 ParameterListT . 114
A.48 ParameterT . 114
A.49 PluginT . 116
A.50 RangeListT . 116
A.51 RangeT . 117
A.52 ResponseT . 117
A.53 RowBreakT . 117
A.54 ScalingT . 118
A.55 SelectionRequestT . 118
A.56 SelectionResponseT . 119
A.57 SeparatorT . 119
A.58 SizeT . 119
A.59 ParameterClassT . 120
A.60 ActionClassT . 121
A.61 SourceListT . 123
A.62 SourceT . 124
A.63 StringDataT . 124
A.64 StringTemplateT . 125
A.65 StringOptionListT . 125
A.66 StringOptionT . 126
A.67 StringT . 126
A.68 TimeScaleT. 127
A.69 UidLayoutInformation . 127
A.70 UidRequestT . 128
A.71 UidResponseT . 128
A.72 UiElementSizeableT . 129
A.73 UiElementT . 129
A.74 UiTemplateT . 130
A.75 VariantT . 131
A.76 VariantOptionListT . 132
A.77 VariantOptionT . 132
A.78 VectorListT . 133
A.79 VectorT . 133
A.80 WaveformListT . 134
A.81 WaveformT . 134
A.82 WaveformTypeT . 135
A.83 WaveformTypeHorizontalT . 135
A.84 WaveformTypeVerticalT . 135
A.85 WaveformTypeYTT . 136
A.86 WaveformTypeXYT . 137
A.87 WaveformKeyPointListT . 138
A.88 WaveformVectorT . 138
A.89 WaveformVectorElementListT . 139
A.90 WaveformVectorElementT. 139
Annex B (informative) Action example . 141

IEC 62769-2:2021 © IEC 2021 – 5 –
Annex C (informative) Typical FDI Client use cases . 150
C.1 General . 150
C.2 Bulk operations . 150
C.3 Progress bar support . 150
Bibliography . 152

Figure 1 – FDI architecture diagram . 13
Figure 2 – Overall structure of a Device . 18
Figure 3 – Structure of Blocks . 19
Figure 4 – Device Model NodeClasses . 19
Figure 5 – Example: Variable hierarchy representing a RECORD . 24
Figure 6 – Variable hierarchy representing a VALUE_ARRAY of RECORDs. 25
Figure 7 – UIP state machine . 73
Figure 8 – FDI Action sequence diagram . 78
Figure 9 – User Interface Descriptions . 82
Figure 10 – User Interface Description sequence diagram . 84
Figure B.1 – Action example (step 1) . 144
Figure B.2 – Action example (step 2) . 145
Figure B.3 – Action example (step 3) . 146
Figure B.4 – Action example (step 4) . 147
Figure B.5 – Action example (step 5) . 148
Figure B.6 – Action example (step 6) . 149
Figure C.1 – Progress bar support . 151

Table 1 – BaseNodeClass Attributes . 20
Table 2 – Object NodeClass Attributes . 20
Table 3 – Variable NodeClass Attributes . 21
Table 4 – Parsing of the initial bytes . 23
Table 5 – Service Definition Table . 26
Table 6 – StatusCode Bit Assignments . 28
Table 7 – DataValue InfoBits . 28
Table 8 – Service result codes . 29
Table 9 – Operation level result codes . 29
Table 10 – GetDeviceAccessInterfaceVersion Service parameters . 31
Table 11 – GetOnlineAccessAvailability Service parameters . 31
Table 12 – Browse Service parameters . 32
Table 13 – CancelBrowse Service parameters . 33
Table 14 – Read Service parameters . 34
Table 15 – Read Service result codes . 34
Table 16 – Read operation result codes . 35
Table 17 – CancelRead Service parameters . 36
Table 18 – Write Service parameters . 37
Table 19 – Write operation result codes . 37

– 6 – IEC 62769-2:2021 © IEC 2021
Table 20 – CancelWrite Service parameters . 38
Table 21 – CreateSubscription Service parameters . 39
Table 22 – CreateSubscription Service result codes . 39
Table 23 – Subscribe Service parameters . 40
Table 24 – Subscribe operation result codes . 42
Table 25 – Unsubscribe Service Parameters . 42
Table 26 – Unsubscribe operation result codes . 42
Table 27 – DeleteSubscription Service parameters . 43
Table 28 – DataChangeCallback Service parameters . 43
Table 29 – DataChangeCallback result codes . 44
Table 30 – InitLock Service parameters . 45
Table 31 – InitLock Service result codes . 45
Table 32 – ExitLock Service parameters . 45
Table 33 – ExitLock Service result codes . 45
Table 34 – InitDirectAccess Service parameters . 46
Table 35 – InitDirectAccess Service result codes . 47
Table 36 – ExitDirectAccess Service parameters . 47
Table 37 – ExitDirectAccess Service result codes . 47
Table 38 – Transfer Service parameters . 48
Table 39 – Transfer Service result codes . 48
Table 40 – Base data types . 48
Table 41 – Identifiers assigned to Attributes . 49
Table 42 – NodeSpecifier . 50
Table 43 – DataValue . 50
Table 44 – InnerErrorInfo . 51
Table 45 – LocalizedText Definition . 51
Table 46 – LocaleId Examples . 52
Table 47 – Range Data Type Structure . 52
Table 48 – EUInformation Data Type Structure . 53
Table 49 – EnumValueType Definition . 53
Table 50 – GetClientTechnologyVersion Service parameters . 54
Table 51 – OpenUserInterface Service parameters . 54
Table 52 – LogAuditTrailMessage Service parameters . 55
Table 53 – SaveUserSettings Service parameters . 56
Table 54 – LoadUserSettings Service parameters . 56
Table 55 – Trace Service parameters . 56
Table 56 – ShowMessageBox Service parameters . 57
Table 57 – ShowProgressBar Service parameters . 57
Table 58 – UpdateShowProgressBar Service parameters . 58
Table 59 – EndShowProgressBar Service parameters . 58
Table 60 – StandardUIActionItemsChange Service parameters . 59
Table 61 – SpecificUIActionItemsChange Service parameters . 59
Table 62 – InitExportFile Service parameters . 60

IEC 62769-2:2021 © IEC 2021 – 7 –
Table 63 – WriteExportFile Service parameters . 60
Table 64 – FinishExportFile Service parameters . 61
Table 65 – InitImportFile Service parameters . 61
Table 66 – ReadImportFile Service parameters . 62
Table 67 – FinishImportFile Service parameters . 62
Table 68 – InitOpenDefaultApplication Service parameters . 63
Table 69 – WriteOpenDefaultApplication Service parameters . 64
Table 70 – FinishOpenDefaultApplication Service parameters . 64
Table 71 – GetHostingProperties Service parameters . 65
Table 72 – GetHostingProperties Key Value Pairs . 65
Table 73 – DefaultResult definition . 66
Table 74 – ButtonSet definition . 66
Table 75 – AcknStyle definition . 66
Table 76 – Activate Service parameters . 67
Table 77 – Deactivate Service parameters . 68
Table 78 – SetSystemLabel Service parameters . 68
Table 79 – SetTraceLevel Service parameters . 69
Table 80 – GetStandardUIActionItems Service parameters . 69
Table 81 – GetSpecificUIActionItems Service parameters . 70
Table 82 – InvokeStandardUIAction Service parameters . 70
Table 83 – InvokeSpecificUIAction Service parameters . 70
Table 84 – TraceLevel definition . 71
Table 85 – StandardUIAction definition . 71
Table 86 – StandardUIActionItem definition . 72
Table 87 – SpecificUIActionItem definition . 72
Table 88 – UIP states . 73
Table 89 – UIP state transitions . 73
Table A.1 – Elements of AbortRequestT . 87
Table A.2 – Enumerations of AccessT. 88
Table A.3 – Elements of AcknowledgementRequestT . 88
Table A.4 – Elements of ActionListT . 88
Table A.5 – Elements of ActionRequestT . 90
Table A.6 – Elements of ActionResponseT . 91
Table A.7 – Elements of ActionT . 91
Table A.8 – Elements of AxisListT . 92
Table A.9 – Attributes of AxisT . 93
Table A.10 – Elements of AxisT . 93
Table A.11 – Elements of BitEnumerationItemListT . 93
Table A.12 – Elements of BitEnumerationItemT . 94
Table A.13 – Elements of ButtonListT . 94
Table A.14 – Elements of ChartT . 95
Table A.15 – Enumerations of ChartTypeT . 96
Table A.16 – Enumerations of ColorNameT . 97

– 8 – IEC 62769-2:2021 © IEC 2021
Table A.17 – Enumerations of DateTimeDataT. 98
Table A.18 – Elements of DelayMessageRequestT . 99
Table A.19 – Attributes of DiagramLineT . 99
Table A.20 – Elements of DiagramLineT . 100
Table A.21 – Elements of EnumerationItemListT . 100
Table A.22 – Elements of EnumerationItemT . 101
Table A.23 – Elements of GraphT . 102
Table A.24 – Elements of GridT . 102
Table A.25 – Enumerations of HandlingT . 103
Table A.26 – Attributes of ImageT . 104
Table A.27 – Elements of ImageT . 104
Table A.28 – Elements of InfoRequestT . 104
Table A.29 – Elements of InputRequestT . 105
Table A.30 – Elements of InputResponseT . 105
Table A.31 – Elements of InputValueT . 106
Table A.32 – Elements of InputValueTypeT . 106
Table A.33 – Elements of LabelHelpT . 107
Table A.34 – Elements of LabelT . 107
Table A.35 – Enumerations of LineTypeT . 108
Table A.36 – Attributes of MenuT . 109
Table A.37 – Elements of MenuT . 110
Table A.38 – Attributes of MenuReferenceT . 110
Table A.39 – Elements of MenuReferenceT . 110
Table A.40 – Enumerations of MenuStyleT . 111
Table A.41 – Enumerations of NumericDataT . 112
Table A.42 – Elements of NumericTemplateT . 112
Table A.43 – Elements of OptionListT . 113
Table A.44 – Enumerations of OrientationT . 113
Table A.
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