Field Device Integration (FDI) - Part 6: Technology Mapping

IEC 62769-6:2021 is available as IEC 62769-6:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 62769-6:2021 specifies the technology mapping for the concepts described in the Field Device Integration (FDI) standard. The technology mapping focuses on implementation regarding the components FDI Client and User Interface Plug-in (UIP) that are specific only to the WORKSTATION platform/.NET as defined in IEC 62769-4.

Intégration des appareils de terrain (FDI) - Partie 6: Mapping de technologies

IEC 62769-6:2021 est disponible sous forme de IEC 62769-6:2021 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente .
L'IEC 62769-6:2021 spécifie le mapping de technologies pour les concepts décrits dans la norme d'intégration des appareils de terrain (FDI). Le mapping de technologies porte essentiellement sur la mise en œuvre relative aux composants: Client FDI et Plugiciel d'Interface Utilisateur (UIP) qui ne sont spécifiques qu'à la plate-forme WORKSTATION (Poste de travail)/.NET telle que définie dans l'IEC 62769-4.

General Information

Status
Published
Publication Date
04-Feb-2021
Current Stage
PPUB - Publication issued
Completion Date
05-Feb-2021
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IEC 62769-6
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Field device integration (FDI) –
Part 6: Technology Mapping
Intégration des appareils de terrain (FDI) –
Partie 6: Mapping de technologies
IEC 62769-6:2021-02(en-fr)
---------------------- Page: 1 ----------------------
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IEC 62769-6
Edition 2.0 2021-02
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Field device integration (FDI) –
Part 6: Technology Mapping
Intégration des appareils de terrain (FDI) –
Partie 6: Mapping de technologies
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
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® Registered trademark of the International Electrotechnical Commission
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---------------------- Page: 3 ----------------------
– 2 – IEC 62769-6:2021 © IEC 2021
CONTENTS

FOREWORD ........................................................................................................................... 4

INTRODUCTION ..................................................................................................................... 6

1 Scope .............................................................................................................................. 7

2 Normative references ...................................................................................................... 7

3 Terms, definitions, abbreviated terms, symbols and conventions ..................................... 7

3.1 Terms and definitions .............................................................................................. 7

3.2 Abbreviated terms ................................................................................................... 8

3.3 Symbols .................................................................................................................. 8

3.4 Conventions ............................................................................................................ 8

4 Technical concepts .......................................................................................................... 8

4.1 General ................................................................................................................... 8

4.1.1 Overview ......................................................................................................... 8

4.1.2 Platforms ......................................................................................................... 9

4.1.3 FDI Type Library .............................................................................................. 9

4.2 UIP representation ................................................................................................ 10

4.3 UIP executable representation .............................................................................. 11

4.4 UIP executable compatibility rules ........................................................................ 11

4.5 Allowed .NET Common Language Run-time versions ............................................ 11

4.5.1 General ......................................................................................................... 11

4.5.2 CLR compatibility strategy ............................................................................. 11

4.5.3 How to identify the .NET target platform of a UIP ........................................... 12

4.6 UIP Deployment .................................................................................................... 12

4.7 UIP Lifecycle......................................................................................................... 13

4.7.1 General ......................................................................................................... 13

4.7.2 UIP Assembly activation steps ....................................................................... 13

4.7.3 UIP Assembly deactivation steps ................................................................... 15

4.8 Interaction between an FDI Client and a UIP ......................................................... 16

4.8.1 Handling of standard UI elements .................................................................. 16

4.8.2 Non-blocking service execution ..................................................................... 16

4.8.3 Blocking service execution............................................................................. 17

4.8.4 Cancel service execution ............................................................................... 18

4.8.5 Threading ...................................................................................................... 19

4.8.6 Timeout ......................................................................................................... 19

4.8.7 Exception handling ........................................................................................ 20

4.8.8 Type safe interfaces ...................................................................................... 21

4.8.9 Globalization and localization ........................................................................ 21

4.8.10 WPF Control handling .................................................................................... 21

4.8.11 Win Form handling ......................................................................................... 21

4.9 Security ................................................................................................................ 21

4.9.1 General ......................................................................................................... 21

4.9.2 Access permissions ....................................................................................... 22

4.9.3 Code identity concept .................................................................................... 22

5 Interface definition ......................................................................................................... 23

Figure 1 – FDI Type Library structure .................................................................................... 10

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IEC 62769-6:2021 © IEC 2021 – 3 –

Figure 2 – .NET surrogate process ....................................................................................... 12

Figure 3 – Identification of Run-time Version......................................................................... 12

Figure 4 – IAsyncPattern based asynchronous service execution example ............................ 17

Figure 5 – Blocking service execution example using IAsyncResult based pattern ................ 18

Figure 6 – Cancel service processing sequence example ..................................................... 18

Figure 7 – Exception source ................................................................................................. 20

Table 1 – Technology edition reference .................................................................................. 9

Table 2 – Base Property Services ......................................................................................... 23

Table 3 – Device Model Services .......................................................................................... 23

Table 4 – Access Control Services ........................................................................................ 24

Table 5 – Direct Access Services .......................................................................................... 24

Table 6 – Hosting Services ................................................................................................... 24

Table 7 – UIP Services ......................................................................................................... 26

Table 8 – Base Data Types ................................................................................................... 26

Table 9 – Special Types ....................................................................................................... 27

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– 4 – IEC 62769-6:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIELD DEVICE INTEGRATION (FDI) –
Part 6: Technology Mapping
FOREWORD

1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

all national electrotechnical committees (IEC National Committees). The object of IEC is to promote

international co-operation on all questions concerning standardization in the electrical and electronic fields. To

this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,

Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as "IEC

Publication(s)"). Their preparation is entrusted to technical committees; any IEC National Committee interested

in the subject dealt with may participate in this preparatory work. International, governmental and non-

governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely

with the International Organization for Standardization (ISO) in accordance with conditions determined by

agreement between the two organizations.

2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

consensus of opinion on the relevant subjects since each technical committee has representation from all

interested IEC National Committees.

3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

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6) All users should ensure that they have the latest edition of this publication.

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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

indispensable for the correct application of this publication.

9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of

patent rights. IEC shall not be held responsible for identifying any or all such patent rights.

International Standard IEC 62769-6 has been prepared by subcommittee 65E: Devices and

integration in enterprise systems, of IEC technical committee 65: Industrial-process

measurement, control and automation.

This second edition cancels and replaces the first 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) redesign of the security concept for UIP execution.
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IEC 62769-6:2021 © IEC 2021 – 5 –
The text of this International Standard is based on the following documents:
FDIS Report on voting
65E/763/FDIS 65E/773/RVD

Full information on the voting for the approval of this International Standard can be found in

the report on voting indicated in the above table.

This document has been drafted in accordance with the ISO/IEC Directives, Part 2.

A list of all parts in the IEC 62769 series, published under the general title Field Device

Integration (FDI), can be found on the IEC website.

The committee has decided that the contents of this document will remain unchanged until the

stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.

IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates

that it contains colours which are considered to be useful for the correct

understanding of its contents. Users should therefore print this document using a

colour printer.
---------------------- Page: 7 ----------------------
– 6 – IEC 62769-6:2021 © IEC 2021
INTRODUCTION

The IEC 62769 series has the general title Field Device Integration (FDI) and the following

parts:
– Part 1: Overview
– Part 2: FDI Client
– Part 3: FDI Server
– Part 4: FDI Packages
– Part 5: FDI Information Model
– Part 6: FDI Technology Mapping
– Part 7: FDI Communication Devices
– Part 100: Profiles – Generic Protocol Extensions
– Part 101-1: Profiles – Foundation Fieldbus H1
– Part 101-2: Profiles – Foundation Fieldbus HSE
– Part 103-1: Profiles – PROFIBUS
– Part 103-4: Profiles – PROFINET
– Part 109-1: Profiles – HART and WirelessHART
– Part 115-2: Profiles – Protocol-specific Definitions for Modbus RTU
– Part 150-1: Profiles – ISA 100.11a
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IEC 62769-6:2021 © IEC 2021 – 7 –
FIELD DEVICE INTEGRATION (FDI) –
Part 6: Technology Mapping
1 Scope

This part of IEC 62769 specifies the technology mapping for the concepts described in the

Field Device Integration (FDI) standard. The technology mapping focuses on implementation

regarding the components FDI Client and User Interface Plug-in (UIP) that are specific only to

the WORKSTATION platform/.NET as defined in IEC 62769-4.
2 Normative references

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.

IEC 61804 (all parts), Function blocks (FB) for process control and Electronic Device

Description Language (EDDL)
IEC 62769-1, Field Device Integration (FDI) – Part 1: Overview
IEC 62769-2, Field Device Integration (FDI) – Part 2: FDI Client
IEC 62769-4, Field Device Integration (FDI) – Part 4: FDI Packages
IEC 62541 (all parts), OPC Unified Architecture

ISO/IEC 19505-1, Information technology – Object Management Group Unified Modeling

Language (OMG UML) – Part 1: Infrastructure

ISO/IEC 29500, (all parts) Information technology – Document description and processing

languages – Office Open XML File Formats
3 Terms, definitions, abbreviated terms, symbols and conventions
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in IEC 62769-1 as well as

the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following

addresses:
• IEC Electropedia: available at http://www.electropedia.org/
• ISO Online browsing platform: available at http://www.iso.org/obp
3.1.1
Application Domain
isolated environment where applications execute
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– 8 – IEC 62769-6:2021 © IEC 2021
3.1.2
FDI Type Library

assembly that contains the interfaces and data types that are used for the data exchange and

interaction between a UIP and an FDI Client
3.1.3
Global Assembly Cache

machine-wide code cache that stores Assemblies specifically designated to be shared by

several applications
3.1.4
Windows Registry

system-defined database in which applications and system components store and retrieve

configuration data
3.2 Abbreviated terms

For the purposes of this document, the abbreviated terms given in IEC 62769-1 as well as the

following apply.
CLR Common Language Run-time
MSI Microsoft Installer
WPF Windows Presentation Foundation
UML Unified Modeling Language
3.3 Symbols

Figures in this document use graphical symbols in accordance with ISO/IEC 19505-1

(UML 2.0).
3.4 Conventions
For the purposes of this document, the conventions given in IEC 62769-1 apply.

The description of Non-blocking service execution in 4.8.2 uses italics to identify a generic

operation name the internal function is being applied to.
4 Technical concepts
4.1 General
4.1.1 Overview

In 4.1.2, 4.2, 4.3, 4.4, and 4.5, this document describes first the technology base for UIP

implementation, the hardware and software environment including the related implementation

rules. Clause 4 follows a life-cycle (use case) oriented approach.

Subclause 4.6 describes the copy deployment procedures and related implementation rules

for the UIP and the FDI Client. UIP executable instantiation and termination is described in

4.7. Subclause 4.8 defines the rules about interaction between the FDI Client and the UIP.

Security related definitions are written in 4.9. The service interface definitions for the FDI

Client and the UIP are found in Clause 5.
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IEC 62769-6:2021 © IEC 2021 – 9 –
4.1.2 Platforms

The UIP and FDI Client shall be built upon the Microsoft .NET Framework and executed in

the .NET Common Language Run-time.

The minimum set of workstation-supported I/O devices is: mouse, keyboard, and color screen

resolution of 1024 × 768 pixels.

The following Table 1 lists all the technologies and their editions that are consistent with FDI

components.
Table 1 – Technology edition reference
Technology Standard Edition
.NET N/A CLR4 for UIP Implementation
EDDL IEC 61804 2016
OPC UA (Parts 1-8) IEC 62541 2015
Open Packaging Convention ISO/IEC 29500 2016
Extensible Markup Language (XML) N/A W3C, 1.0 (fifth edition)
4.1.3 FDI Type Library

The Device Access Services and the UIP Services can be modelled as .NET interfaces

passing .NET data type arguments. These interfaces and data types are used for the data

exchange and interaction between the UIP and the FDI Client. For runtime error handling

purposes during interface method calls, .NET exceptions classes are defined.

The FDI .NET interfaces, data types, and exception classes are defined in a single FDI Type

Library. The FDI Type Library is a strong-named Assembly. The file name of this Assembly

shall be ‘fdi.dll’. The fdi.dll shall be versioned as per IEC 62769-1:2020, 8.1. The FDI Type

Library is part of the FDI Core Technology as per IEC 62769-1:2020, 8.3.2.1 and therefore

directly influences the FDI Technology Version. All Compatible changes of the fdi.dll lead to

an increase of the minor portion of the FDI Technology Version. Incompatible changes lead to

an increase of the major portion of the FDI Technology Version (see IEC 62769-1:2020,

8.3.2.2).

The FDI Type Library is signed with a single unique key by the issuer of the file. The FDI Type

Library shall be installed separately as part of every FDI Client installation. User Interface

Plug-Ins (UIP) and the FDI Client Application shall use this instance of the fdi.dll. UIPs shall

not carry or deploy the FDI Type Library. The FDI Client is responsible to provide means to

allow updates of this type library over time.
Figure 1 shows the FDI Type Library structure.
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– 10 – IEC 62769-6:2021 © IEC 2021

NOTE The composite structure diagram shows only the core interfaces that implement the interfaces defined in

IEC 62769-2.
Figure 1 – FDI Type Library structure
4.2 UIP representation

The UIP Variant can contain either a single or multiple runtime modules (.NET Assembly) and

their related supplementary files (for example: resource files). The runtime module of the UIP

Variant is called "UIP executable". The supplementary file(s) of the UIP Variant is/are called

"UIP supplement(s)".

UIP supplement(s) is/are stored under (a) subfolder(s) of the UIP executable installation

directory.
EXAMPLE Resource files and application configuration data.

The RuntimeId of a UIP Variant shall be ".NET Framework CLR4", see IEC 62769-4. FDI

Clients supporting this RuntimeId shall support the .NET Framework 4.6.1 or higher using the

CLR4 and UIPs with this RuntimeId shall use the .NET Framework 4.6.1 or lower supporting

the CLR4 (meaning .NET Framework 4.0 up to .NET Framework 4.6.1).

The UIP Variant shall be self-contained. All UIP required libraries (.NET Assemblies) required

by a UIP Variant are stored within the same Folder.
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IEC 62769-6:2021 © IEC 2021 – 11 –
4.3 UIP executable representation

The implementation of the UIP depends on the type of user interface elements that can be

embedded into the user interface hosting environment of the FDI Client. UIP shall be

implemented as a .NET System.Windows.Forms class UserControl or a Windows
Presentation Foundation (WPF) System.Windows.Controls class UserControl.

UIP executables and their required libraries shall have strong names. The signing of a strong-

named Assembly can be done using a self-generated key.

NOTE The identity of strong-named Assemblies consists of a name, version, culture, public key token and digital

signature.

UIP executables and their required libraries shall be shipped with file containing the public

key in order to enable Assembly verification.
4.4 UIP executable compatibility rules

The compatibility rules for different versions of the UIP component are specified in

IEC 62769-4.

The compilation target platform for the UIP shall be "anyCPU". If this is not feasible, the UIP

shall be shipped in two variants. One UIP variant shall be compiled for target platform "x86".

The second UIP variant shall be compiled for target platform "x64". The compilation platform

target shall be described in the catalog.xml file, which is defined in IEC 62769-4. This

catalog.xml file contains an xml element "CpuInformation" that describes the User Interface

Plug-in variant. The allowed values that shall be used in the xml element "CpuInformation" are

"anyCPU", "x86" or "x64".
4.5 Allowed .NET Common Language Run-time versions
4.5.1 General

Specific CLR (Common Language Run-time) versions are released for the execution of

software components built with specific .NET Framework versions. The .NET CLR version 4.0

is used to execute software components built with .NET Framework 4.0. .NET Components

are built for one CLR version only but can be capable to run also under a newer CLR version.

FDI Clients can be built based on CLR version 4.0 or future versions. An FDI Client has to

realize the following situations when starting a UIP.

• When the UIP to be started was built for the same run-time, the UIP can be started by the

FDI Client as usual.

• When the UIP to be started was built with another CLR version and is not compiled for the

current running CLR version, the FDI Client shall start the UIP in a surrogate process with

the adequate CLR version. (More details are described in 4.5.2.)

Taking this behavior in account, a UIP shall be developed for CLR version 4.0 or any future

version. If the CLR versions do not match, the UIP shall be started in a separate process. The

UIP will then not be displayed as an integrated module within the FDI Client. It is up to the

FDI Client to realize the surrogate process.
4.5.2 CLR compatibility strategy

In the future, FDI Clients and UIPs will be permitted to be built on different incompatible

versions of the CLR.

If an FDI Client detects that a UIP requires a CLR that is not compatible with the FDI Client,

the FDI Client can use a proxy class that enables interaction with the UIP built using a

different version of the CLR.
---------------------- Page: 13 ----------------------
– 12 – IEC 62769-6:2021 © IEC 2021

The FDI Client loads a proxy UIP executable, creates an instance of the proxy class, and

delegates the execution of the UIP to this proxy. The pro
...

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