IEC 62744:2014

Representation of states of objects by graphical symbols

IEC 62744:2014 provides generic rules for the representation of states of objects by graphical symbols standardized in IEC 60617, ISO 14617, IEC 60417, for example, and for future graphical symbols included in these standards. It also provides operational states of an object as examples that typically occur and which need to be represented by standardized graphical symbols and defines generic rules to be applied. It specifies which types of presentation facilities are recommended to present the different operational states to humans.
It has the status of a horizontal standard in accordance with IEC Guide 108.

Représentation d'états d'objets par des symboles graphiques

L'IEC 62744:2014 fournit les règles génériques pour la représentation d'états d'objets par des symboles graphiques normalisés dans les normes IEC 60617, ISO 14617, IEC 60417, par exemple, et pour les symboles graphiques futurs inclus dans ces normes. Elle fournit éfalement les états opérationnels d'un objet à titre d'exemples qui se produisent typiquement et qu'il est nécessaire de représenter par des symboles graphiques normalisés. Elle définit également les règles génériques à appliquer. Elle spécifie les types de moyens de représentation recommandés pour présenter les différents états opérationnels aux êtres humains.
Elle a le statut de norme horizontale conformément au Guide IEC 108.

General Information

• Status: Published
• Publication Date: 26-Nov-2014
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 01.080.20 - Graphical symbols for use on specific equipment
• Technical Committee: TC 3 - Documentation, graphical symbols and representations of technical information
• Current Stage: PPUB - Publication issued
• Start Date: 31-Dec-2014
• Completion Date: 27-Nov-2014

Standards Content (Sample)

IEC 62744 ®
Edition 1.0 2014-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL STANDARD
NORME HORIZONTALE
Representation of states of objects by graphical symbols

Représentation d'états d'objets par des symboles graphiques

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IEC 62744 ®
Edition 1.0 2014-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
HORIZONTAL STANDARD
NORME HORIZONTALE
Representation of states of objects by graphical symbols

Représentation d'états d'objets par des symboles graphiques

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
V
CODE PRIX
ICS 01.080.20 ISBN 978-2-8322-1935-5

– 2 – IEC 62744:2014 © IEC 2014
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references. 7
3 Terms, definitions and abbreviations . 8
3.1 Terms and definitions . 8
3.2 Abbreviations . 12
4 General . 12
5 Reasons for dynamic representation of objects . 13
5.1 General . 13
5.2 Change of state of an object in the supervised process . 13
5.3 Operators command/action . 14
5.4 Time controlled activities . 15
5.5 Sporadic change . 15
6 Area of application . 16
6.1 General . 16
6.2 SCADA user interface . 16
6.3 Process control user interface . 16
6.4 Engineering and configuration tool interface . 16
6.5 Different operator displays of product with interactive functions . 16
6.6 Graphical symbols related to safety signal words such as danger, warning
and caution . 17
6.6.1 Graphical symbols related to safety . 17
6.6.2 Symbols in alarm and signalling displays . 18
6.7 Representation of actuators . 18
6.7.1 General . 18
6.7.2 Recommended location of information associated with graphical
symbols . 18
6.8 Instructions for use in electronic form . 20
7 Types of presentation – Rules and examples . 20
7.1 General . 20
7.2 Change of shape . 21
7.2.1 General . 21
7.2.2 Usage of symbols . 21
7.3 Change of colours . 21
7.3.1 General . 21
7.3.2 Use of background colours . 22
7.3.3 Colour contrast . 22
7.3.4 Operational states and associated recommended colours . 22
7.3.5 Flashing . 22
7.4 Change size . 23
7.5 Acoustic codes . 23
7.6 Actuators as parts of a pictorial presentation on a video display unit. 23
7.7 Add-in or change letters/text . 23
7.8 Combination of presentation types on the same graphical symbol . 24
8 Consideration of regional or national legislation . 28

Annex A (informative) Example of presentation of a graphical symbol in different
forms for use on equipment . 29
Bibliography . 30

Figure 1 – Example of changing the operational state from OFF to ON . 15
Figure 2 – Recommended location of information associated with graphical symbols . 19
Figure 3 – Examples of graphical symbols including related information . 20

Table 1 – Generic operational states used during operation of an object (informative /
exemplary) . 13
Table 2 – General principles for meaning of basic shapes . 17
Table 3 – Meaning of indication codes with respect to the operational states . 25
Table A.1 – Example of presentation of the graphical symbol ISO 7000-0034
representing different operational temperature states . 29

– 4 – IEC 62744:2014 © IEC 2014
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
REPRESENTATION OF STATES OF
OBJECTS BY GRAPHICAL SYMBOLS
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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consensus of opinion on the relevant subjects since each technical committee has represe
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