Design of graphical symbols for use in the technical documentation of products -- Part 2: Specification for graphical symbols in a computer sensible form, including graphical symbols for a reference library, and requirements for their interchange

This part of International Standard 81714 specifies requirements for graphical symbols to be included in a reference symbol library in a computer sensible form, and requirements for their interchange among computer aided tools. The reference symbol library may be used as a basis for the design and editing of documents, and for the interchange of documents and graphical symbol libraries among computer-aided tools. The specification of a physical file format required for the interchange is not included in this standard.

Gestaltung von graphischen Symbolen zur Anwendung in der technischen Produktdokumentation -- Teil 2: Spezifikation für graphische Symbole in rechnerinterpretierbarer Form einschließlich graphischer Symbole für eine Referenzbibliothek und Anforderungen für ihren Datenaustausch

Création de symboles graphiques utilisables dans la documentation technique de produits -- Partie 2: Spécification pour symboles graphiques sous forme adaptée à l'ordinateur, y compris les symboles pour bibliothèque de références et exigences relatives à leur échange

Spécifie les exigences relatives aux symboles graphiques à inclure dans une bibliothèque de références sous forme adaptée à l'ordinateur et les exigences relatives à leur échange entre outils assistés par ordinateur. La bibliothèque de symboles de références peut être utilisée comme base pour la création et la rédaction de documents et pour l'échange de documents et de bibliothèques de symboles graphiques entre outils assistés par ordinateur. Elle a le statut d'une norme horizontale conformément au Guide 108 de la CEI.

Načrtovanje grafičnih simbolov za uporabo v tehnični dokumentaciji izdelkov - 2. del: Specifikacija za grafične simbole v računalniško prepoznavni obliki, vključno z grafičnimi simboli za referenčno knjižnico, ter zahteve za njihovo izmenjavo (IEC 81714-2:2006)

General Information

Status
Published
Publication Date
07-Jan-2008
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
17-Dec-2007
Due Date
21-Feb-2008
Completion Date
08-Jan-2008

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Design of graphical symbols for use in the technical documentation of products - Part 2:

Specification for graphical symbols in a computer sensible form, including graphical

symbols for a reference library, and requirements for their interchange (IEC 81714-

2:2006)
Gestaltung von graphischen Symbolen zur Anwendung in der technischen
Produktdokumentation - Teil 2: Spezifikation für graphische Symbole in
rechnerinterpretierbarer Form einschließlich graphischer Symbole für eine
Referenzbibliothek und Anforderungen für ihren Datenaustausch (IEC 81714-2:2006)
Création de symboles graphiques utilisables dans la documentation technique de
produits - Partie 2: Spécification pour symboles graphiques sous forme adaptée à

l'ordinateur, y compris les symboles pour bibliothèque de références et exigences

relatives à leur échange (IEC 81714-2:2006)
Ta slovenski standard je istoveten z: EN 81714-2:2007
ICS:
01.080.50
35.240.01
SIST EN 81714-2:2008 en,fr

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
EUROPEAN STANDARD
EN 81714-2
NORME EUROPÉENNE
March 2007
EUROPÄISCHE NORM
ICS 01.080.50 Supersedes EN 81714-2:1998
English version
Design of graphical symbols
for use in the technical documentation of products -
Part 2: Specification for graphical symbols
in a computer sensible form, including graphical symbols
for a reference library, and requirements for their interchange
(IEC 81714-2:2006)
Création de symboles graphiques Gestaltung von graphischen Symbolen
utilisables dans la documentation zur Anwendung in der technischen
technique de produits - Produktdokumentation -
Partie 2: Spécification Teil 2: Spezifikation für graphische
pour symboles graphiques Symbole in rechnerinterpretierbarer Form
sous forme adaptée à l'ordinateur, einschließlich graphischer Symbole
y compris les symboles pour bibliothèque für eine Referenzbibliothek
de références et exigences relatives und Anforderungen
à leur échange für ihren Datenaustausch
(CEI 81714-2:2006) (IEC 81714-2:2006)

This European Standard was approved by CENELEC on 2006-10-01. 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 Central Secretariat 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 Central Secretariat has the same status as the official versions.

CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Cyprus, the

Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,

Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,

Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels

© 2007 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.

Ref. No. EN 81714-2:2007 E
---------------------- Page: 2 ----------------------
EN 81714-2:2007 - 2 -
Foreword

The text of the International Standard IEC 81714-2:2006, prepared by IEC TC 3, Information structures,

documentation and graphical symbols, in cooperation with ISO subcommittee SC 1, Basic conventions, of

ISO technical committee 10, Technical product documentation, was submitted to the formal vote and was

approved by CENELEC as EN 81714-2 on 2006-10-01 without any modification.
This European Standard supersedes EN 81714-2:1998.
The main changes with respect to EN 81714-2:1998 are as follows:

Subclauses 6.16, 6.18 and Annex D contain the major changes; other changes are basically updates.

The following dates were fixed:
– latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2007-10-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2009-10-01
Annex ZA has been added by CENELEC.
__________
Endorsement notice

The text of the International Standard IEC 81714-2:2006 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:

ISO 10303-1 NOTE Harmonized as ENV ISO 10303-1:1995 (not modified).
ISO 10303-11 NOTE Harmonized as ENV ISO 10303-11:1995 (not modified).
ISO 10303-21 NOTE Harmonized as ENV ISO 10303-21:1995 (not modified).
IEC 60445 NOTE Harmonized as EN 60445:2000 (not modified).
__________
---------------------- Page: 3 ----------------------
- 3 - EN 81714-2:2007
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications

The following referenced documents are indispensable for the application 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD

applies.
Publication Year Title EN/HD Year
IEC 60617 Data- Graphical symbols for diagrams - -
base
1) 2)
IEC 61082-1 - Preparation of documents used in EN 61082-1 2006
electrotechnology -
Part 1: Rules
IEC 61286 (mod) 2001 Information technology - Coded graphic EN 61286 2002
character set for use in the preparation of
documents used in electrotechnology and for
information interchange
IEC 61346-1 1996 Industrial systems, installations and EN 61346-1 1996
equipment and industrial products -
Structuring principles and reference
designations -
Part 1: Basic rules
IEC 61346-2 2000 Industrial systems, installations and EN 61346-2 2000
equipment and industrial products -
Structuring principles and reference
designations -
Part 2: Classification of objects and codes for
classes
IEC 61360-1 2002 Standard data element types with associated EN 61360-1 2002
A1 2003 classification scheme for electric A1 2004
components -
Part 1: Definitions - Principles and methods
1) 2)
IEC 61360-4 - Standard data element types with associated EN 61360-4 2005
classification scheme for electric + corr. December 2005
components -
Part 4: IEC reference collection of standard
data element types and component classes
IEC 61666 1997 Industrial systems, installations and EN 61666 1997
equipment and industrial products -
Identification of terminals within a system
Undated reference.
Valid edition at date of issue.
---------------------- Page: 4 ----------------------
EN 81714-2:2007 - 4 -
Publication Year Title EN/HD Year
IEC 61966-2-1 1999 Multimedia systems and equipment - Colour EN 61966-2-1 2000
measurement and management -
Part 2-1: Colour management - Default RGB
colour space - sRGB
IEC 81714-3 2004 Design of graphical symbols for use in the - -
technical documentation of products -
Part 3: Classification of connect nodes,
networks and their encoding
ISO/IEC 646 1991 Information technology - ISO 7-bit coded - -
character set for information interchange

ISO/IEC 7942-1 1994 Information technology - Computer graphics EN ISO/IEC 7942-1 1995

and image processing - Graphical Kernel
System (GKS) -
Part 1: Functional description
ISO/IEC 9592-1 1997 Information technology - Computer graphics - -
and image processing - Programmer's
Hierarchical Interactive Graphics System
(PHIGS) -
Part 1: Functional description
ISO 128-20 1996 Technical drawings - General principles of EN ISO 128-20 2001
presentation -
Part 20: Basic conventions for lines
ISO 128-21 1997 Technical drawings - General principles of EN ISO 128-21 2001
presentation -
Part 21: Preparation of lines by CAD systems
ISO 639-1 2002 Codes for the representation of names of - -
languages -
Part 1: Alpha-2 code
ISO 3098-0 1997 Technical product documentation - Lettering - EN ISO 3098-0 1997
Part 0: General requirements
ISO 3098-5 1997 Technical product documentation - Lettering - EN ISO 3098-5 1997
Part 5: CAD lettering of the Latin alphabet,
numerals and marks
ISO 3166-1 1997 Codes for the representation of names of EN ISO 3166-1 1997
countries and their subdivisions -
Part 1: Country codes
ISO 6428 1982 Technical drawings - Requirements for EN ISO 6428 1999
microcopying
ISO 6523-1 1998 Information technology - Structure for the - -
identification of organizations and
organization parts -
Part 1: Identification of organization
identification schemes
ISO 10303-201 1994 Industrial automation systems and ENV ISO 10303-201 1995
integration - Product data representation and
exchange -
Part 201: Application protocol: Explicit
draughting
---------------------- Page: 5 ----------------------
- 5 - EN 81714-2:2007
Publication Year Title EN/HD Year
ISO 81714-1 1999 Design of graphical symbols for use in the EN ISO 81714-1 1999
technical documentation of products -
Part 1: Basic rules
---------------------- Page: 6 ----------------------
NORME CEI
INTERNATIONALE
IEC
81714-2
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2006-06
Création de symboles graphiques utilisables
dans la documentation technique de produits –
Partie 2:
Spécification pour symboles graphiques
sous forme adaptée à l'ordinateur, y compris
les symboles pour bibliothèque de références
et exigences relatives à leur échange
Design of graphical symbols for use in the
technical documentation of products –
Part 2:
Specification for graphical symbols in a computer
sensible form, including graphical symbols
for a reference library, and requirements for
their interchange
 IEC 2006 Droits de reproduction réservés  Copyright - all rights reserved

Aucune partie de cette publication ne peut être reproduite ni No part of this publication may be reproduced or utilized in any

utilisée sous quelque forme que ce soit et par aucun procédé, form or by any means, electronic or mechanical, including

électronique ou mécanique, y compris la photocopie et les photocopying and microfilm, without permission in writing from

microfilms, sans l'accord écrit de l'éditeur. the publisher.

International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland

Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmail@iec.ch Web: www.iec.ch

CODE PRIX
PRICE CODE
Pour prix, voir catalogue en vigueur
For price, see current catalogue
---------------------- Page: 7 ----------------------
81714-2  IEC:2006 – 3 –
CONTENTS

FOREWORD...........................................................................................................................9

1 Scope.............................................................................................................................15

2 Normative references .....................................................................................................15

3 Terms and definitions .....................................................................................................19

3.1 Graphical symbols for use on documents ..............................................................19

3.2 Nodes ...................................................................................................................19

3.3 Administration of openings ....................................................................................21

3.4 Graphical constructs..............................................................................................23

3.5 Routing and placing of graphical symbols in diagrams...........................................23

3.6 Administration of graphical symbols ......................................................................23

3.7 Text.......................................................................................................................25

4 Markers ..........................................................................................................................27

4.1 Markers for reference points and connect nodes ...................................................27

4.2 Markers for alignment of text .................................................................................27

5 Reference symbols.........................................................................................................27

6 Specifications for symbols including symbols for a reference library ...............................29

6.1 General .................................................................................................................29

6.2 Variants of graphical symbols................................................................................31

6.3 Scaling ..................................................................................................................35

6.4 Module sizes in reference libraries ........................................................................37

6.5 Use of layer technique...........................................................................................39

6.6 Constructs used in the creation of graphical symbols ............................................39

6.7 Text.......................................................................................................................43

6.8 Connect nodes ......................................................................................................49

6.9 Reference point of reference symbols ...................................................................57

6.10 Identification of schematic connect nodes .............................................................59

6.11 Routing and placing of symbols .............................................................................61

6.12 Identifying block ....................................................................................................65

6.13 Descriptive data block ...........................................................................................65

6.14 Defaulted location of identifying and descriptive block...........................................69

6.15 Creation of reference symbols not shown in IEC 60617 nor in ISO 14617 .............69

6.16 Classification of graphical symbols ........................................................................71

6.17 Description of symbols ..........................................................................................73

6.18 Reference symbol identifier ...................................................................................75

Annex A (informative) Relations to IEC 60617 and ISO 14617 ...........................................79

Annex B (informative) Interchange of diagrams and symbol libraries....................................81

Annex C (informative) Application reference model..............................................................89

Annex D (informative) Product identification ......................................................................129

Annex E (normative) Data types, value formats, recommended lengths, defaults ...............131

Annex F (normative) Requirements concerning lines..........................................................137

Annex G (normative) Requirements concerning text...........................................................143

---------------------- Page: 8 ----------------------
81714-2  IEC:2006 – 5 –

Annex H (informative) Examples of pattern definitions .......................................................151

Annex I (normative) Library versions – Conformance requirements....................................155

Annex J (normative) Requirements concerning global definitions in a library......................157

Annex K (informative) Data element type specification.......................................................161

Bibliography........................................................................................................................169

Figure 1 – Examples of presentation of connect node linkage ...............................................21

Figure 2 – Encoding of text alignment ...................................................................................27

Figure 3 – Variants of a graphical symbol .............................................................................31

Figure 4 – Example of variants of a graphical symbol representing a thyristor.......................33

Figure 5 – Example of variants of a graphical symbol representing a variable resistor

showing terminal designations with respect to the product aspect.........................................33

Figure 6 – Example of variants of a graphical symbol representing a resistor........................35

Figure 7 – Graphical symbols indicating a delayed action .....................................................35

Figure 8 – Example of enlarging a symbol with a scaling factor 1:2.......................................37

Figure 9 – Example of a change of the module size ..............................................................39

Figure 10 – Example of use of the spline function .................................................................41

Figure 11 – Recommended colours.......................................................................................41

Figure 12 – General labels in graphical symbols and their alignment ....................................47

Figure 13 – Use of general labels in graphical symbols.........................................................47

Figure 14 – Examples of location of schematic connect nodes ..............................................49

Figure 15 – Examples of locations of schematic connect nodes ............................................51

Figure 16 – Example of position of the textfield for product terminal designations .................53

Figure 17 – Example of position of the textfield for product terminal designations for

symbols without terminal lines ..............................................................................................55

Figure 18 – Example of position of the textfields for product terminal and function

terminal designations............................................................................................................55

Figure 19 – Reference point of symbols ................................................................................57

Figure 20 – Connect node identification ................................................................................59

Figure 21 –Schematic connect node identification.................................................................59

Figure 22 – Examples of embedded areas ............................................................................61

Figure 23 – Examples of sectors for drawing connecting lines onto a schematic

connect node ........................................................................................................................61

Figure 24 – Example of graphical swapping of schematic connect nodes ..............................63

Figure 25 – Example of graphical swapping of schematic connect nodes ..............................63

Figure 26 – Sequence and justification of the textfields associated with the identifying

block.....................................................................................................................................65

Figure 27 – Justification and sequence of the textfields associated with the descriptive

block.....................................................................................................................................67

Figure 28 – Example of defaulted locations of ib, db, and textfield for the product

terminal designation..............................................................................................................69

Figure 29 – Examples taken from the section on recording, integrating and measuring

instruments...........................................................................................................................71

---------------------- Page: 9 ----------------------
81714-2  IEC:2006 – 7 –

Figure 30 – Structure of the symbol identifier........................................................................75

Figure 31 – Examples of symbol identifiers of reference symbols..........................................77

Figure B.1 – Data interchange ..............................................................................................83

Figure C.1 – EXPRESS-G model of the graphical part of a symbol........................................91

Figure C.2 – Hatching patterns .............................................................................................99

Figure C.3 – EXPRESS–G model concerning text requirements..........................................103

Figure C.4 – EXPRESS–G symbol part ...............................................................................109

Figure C.5 – Symbol variant text block part.........................................................................123

Figure F.1 – Line end types and their codes .......................................................................139

Figure F.2 – Line corner types and their codes ...................................................................141

Figure F.3 – Grouping of lines.............................................................................................141

Figure G.1 – Character slant angle .....................................................................................143

Figure G.2 – Character spacing ..........................................................................................145

Figure G.3 – Tabular lettering .............................................................................................145

Figure G.4 – Examples of proportional lettering with different character spacing.................147

Figure G.5 – Possible alignments of a textstring using a character slant angle of 0° and

a rotation of 0°....................................................................................................................149

---------------------- Page: 10 ----------------------
81714-2  IEC:2006 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
DESIGN OF GRAPHICAL SYMBOLS FOR USE
IN THE TECHNICAL DOCUMENTATION OF PRODUCTS –
Part 2: Specification for graphical symbols in a computer sensible form,
including graphical symbols for a reference library, and requirements
for their interchange
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

Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

misinterpretation by any end user.

4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

transparently to the maximum extent possible in their national and regional publications. Any divergence

between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in

the latter.

5) IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any

equipment declared to be in conformity with an IEC Publication.

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

7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

members of its technical committees and IEC National Committees for any personal injury, property damage or

other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

Publications.

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 81714-2 has been prepared by IEC technical committee 3:

Information structures, documentation and graphical symbols in cooperation with ISO

subcommittee SC 1: Basic conventions of ISO technical committee 10: Technical product

documentation.
This publication is published as a double logo standard.

This second edition cancels and replaces the first edition published in 1998. It constitutes a

technical revision. The main changes with respect to the previous edition are as follows:

Subclauses 6.16, 6.18 and Annex D contain the major changes; other changes are basically

updates.
---------------------- Page: 11 ----------------------
81714-2  IEC:2006 – 11 –
The text of this standard is based on the following documents of IEC:
CDV Report on voting
3/738/CDV 3/760A/RVC

Full information on the voting for the approval of this part of this standard can be found in the

report on voting indicated in the above table. In ISO, the standard has been approved by 8 P

members out of 8 having cast a vote.

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

In order to collect all requirements concerning relevant graphical symbols within one single

numerical series, IEC technical committee 3 in conjunction with ISO technical committee 10:

Technical product documentation, agreed to publish all parts of this International Standard

within the 81714 series.

The Technical Management Board of ISO and the Standardization Management Board of IEC

have decided that, for each part of this series, one organization shall be chosen responsible.

The technical committees involved have agreed not to change any part of International

Standard 81714 without mutual agreement.

International Standard 81714 consists of the following parts, under the general title Design of

graphical symbols for use in the technical documentation of products:
Part 1: Basic rules (published by ISO)

Part 2: Specification for graphical symbols in a computer sensible form, including graphical

symbols for a reference library, and requirements for their interchange
(published by IEC)
Part 3: Classification of connect nodes, networks and their encoding
(published by IEC)

Part 2 serves as the basis for the design of graphical symbols for use in CAx-systems in all

fields of the technical documentation of products. Applications of the standard are, for

example, IEC 60617 and ISO 14617 as well as the web based databases of those standards.

This standard has been updated and is kept compatible with the 1 edition of this part of IEC

81714.

Annex A describes the relations between this standard, IEC 60617 and the edition of

ISO 14617 [8] .

Annex B contains information concerning the interchange of graphical symbol libraries among

computer-aided systems.
Annex C contains the E
...

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