EN 60848:2002

GRAFCET specification language for sequential function charts

Defines the GRAFCET specification language for the functional description of the behaviour of the sequential part of a control system.Specifies the symbols and the rules for the graphical representation of this language, as well as for its interpretation. This standard has been prepared for automated production systems of industrial applications.However no particular area of application is excluded.

Entwurfssprache GRAFCET für Ablauf-Funktionspläne

Langage de spécification GRAFCET pour diagrammes fonctionnels en séquence

Définit le langage de spécification GRAFCET pour la description fonctionnelle du comportement de la partie séquentielle des systèmes de commande.Définit les symboles et les règles nécessaires à la représentation graphique de ce langage, ainsi que l'interprétation qui en est faite. Cette norme a été établie pour les systèmes automatisés de production des applications industrielles, cependant aucun champ d'application n'est exclu.

GRAFCET specification language for sequential function charts (IEC 60848:2002)

General Information

• Status: Withdrawn
• Publication Date: 23-Apr-2002
• Withdrawal Date: 31-Mar-2005
• ICS: 29.020 - Electrical engineering in general
• Technical Committee: CLC/SR 3 - Information structures, documentation and graphical symbols
• Drafting Committee: IEC/TC 3 - IEC_TC_3
• Parallel Committee: IEC/SC 3B - IEC_SC_3B
• Current Stage: 9960 - Withdrawal effective - Withdrawal
• Start Date: 03-Apr-2016
• Completion Date: 03-Apr-2016
• Ref Project: SIST EN 60848:2003 - GRAFCET specification language for sequential function charts

Relations

• Replaced By: EN 60848:2013 - GRAFCET specification language for sequential function charts
• Effective Date: 29-Jan-2023

Standards Content (Sample)

SLOVENSKI STANDARD
01-maj-2003
GRAFCET specification language for sequential function charts (IEC 60848:2002)
GRAFCET specification language for sequential function charts
Entwurfssprache GRAFCET für Ablauf-Funktionspläne
Langage de spécification GRAFCET pour diagrammes fonctionnels en séquence
Ta slovenski standard je istoveten z: EN 60848:2002
ICS:
01.100.25 5LVEHVSRGURþMD Electrical and electronics
HOHNWURWHKQLNHLQHOHNWURQLNH engineering drawings
35.060 Jeziki, ki se uporabljajo v Languages used in
informacijski tehniki in information technology
tehnologiji
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN 60848
NORME EUROPÉENNE
EUROPÄISCHE NORM April 2002
ICS 29.020
English version
GRAFCET specification language for sequential function charts
(IEC 60848:2002)
Langage de spécification GRAFCET Entwurfssprache GRAFCET
pour diagrammes fonctionnels en séquence für Ablauf-Funktionspläne
(CEI 60848:2002) (IEC 60848:2002)
This European Standard was approved by CENELEC on 2002-04-01. 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, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands,
Norway, Portugal, Spain, Sweden, Switzerland and 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
© 2002 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 60848:2002 E
Foreword
The text of document 3B/344/FDIS, future edition 2 of IEC 60848, prepared by SC 3B, Documentation,
of IEC TC 3, Information structures, documentation and graphical symbols, was submitted to the
IEC-CENELEC parallel vote and was approved by CENELEC as EN 60848 on 2002-04-01.
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) 2003-01-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2005-04-01
Annexes designated "normative" are part of the body of the standard.
Annexes designated "informative" are given for information only.
In this standard, annex ZA is normative and annexes A, B and C are informative.
Annex ZA has been added by CENELEC.
__________
Endorsement notice
The text of the International Standard IEC 60848:2002 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61131-3 NOTE Harmonized as EN 61131-3:1993 (not modified).
__________
- 3 - EN 60848:2002
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of any
of these publications apply to this European Standard only when incorporated in it by amendment or
revision. For undated references the latest edition of the publication referred to applies (including
amendments).
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 60050-351 1998 International Electrotechnical --
Vocabulary
Part 351: Automatic control
IEC 60617-12 1997 Graphical symbols for diagrams EN 60617-12 1998
Part 12: Binary logic elements

NORME
CEI
INTERNATIONALE IEC
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
2002-02
Langage de spécification GRAFCET
pour diagrammes fonctionnels en séquence
GRAFCET specification language
for sequential function charts
© IEC 2002 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: [phone] Telefax: [phone] E-mail: [e-mail]  Web: www.iec.ch
CODE PRIX
XA
Commission Electrotechnique Internationale PRICE CODE
International Electrotechnical Commission
ɆɟɠɞɭɧɚɪɨɞɧɚɹɗɥɟɤɬɪɨɬɟɯɧɢɱɟɫɤɚɹɄɨɦɢɫɫɢɹ
Pour prix, voir catalogue en vigueur
For price, see current catalogue

60848 © IEC:2002 – 3 –
CONTENTS
FOREWORD.5
INTRODUCTION.7
1 Scope and object .9
2 Normative references.9
3 Terms and definitions .9
4 General principles.13
4.1 Context.13
4.2 GRAFCET, a behaviour specification language .15
4.3 GRAFCET, short presentation.15
4.4 Syntax rule .19
4.5 Evolution rules.19
4.6 Input events.21
4.7 Internal events.21
4.8 Output modes.23
4.9 Application of the evolution rules.23
4.10 Comparison between the two output modes .29
5 Graphical representation of the elements .31
6 Graphical representation of sequential structures .57
6.1 Basic structures.57
6.2 Particular structures .63
7 Structuring.69
7.1 Partition of a grafcet .69
7.2 Structuring using the forcing of a partial grafcet .73
7.3 Structuring using the enclosure.75
7.4 Structuring using the macro-steps.81
Annex A (informative) Example of control of a press.83
Annex B (informative) Example: Automatic weighing-mixing.85
Annex C (informative) Relations between the GRAFCET of IEC 60848
and the SFC of IEC 61131-3.97
Bibliography . 101

60848 © IEC:2002 – 5 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
GRAFCET SPECIFICATION LANGUAGE
FOR SEQUENTIAL FUNCTION CHARTS
FOREWORD
1) The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of the 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, the IEC publishes International Standards. 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. The 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 the 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 National Committees.
3) The documents produced have the form of recommendations for international use and are published in the form
of standards, technical specifications, technical reports or guides and they are accepted by the National
Committees in that sense.
4) In order to promote international unification, IEC National Committees undertake to apply IEC International
Standards transparently to the maximum extent possible in their national and regional standards. Any
divergence between the IEC Standard and the corresponding national or regional standard shall be clearly
indicated in the latter.
5) The IEC provides no marking procedure to indicate its approval and can not be rendered responsible for any
equipment declared to be in conformity with one of its standards.
6) Attention is drawn to the possibility that some of the elements of this International Standard may be the subject
of patent rights. The IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60848 has been prepared by subcommittee 3B: Documentation, of
IEC technical committee 3: Information structures, documentation and graphical symbols.
This second edition cancels and replaces the first edition published in 1988 and constitutes a
global technical revision with the addition of the following main concepts: input event, internal
event, assignation, allocation, forcing, macro-step and enclosure.
The text of this standard is based on the following documents:
FDIS Report on voting
3B/344/FDIS 3B/346/RVD
Full information on the voting for the approval of this standard can be found in the report on
voting indicated in the above table.
This publication has been drafted in accordance with the ISO/IEC Directives, Part 3.
Annexes A, B and C are for information only.
The committee has decided that the contents of this publication will remain unchanged until
2006. At this date, the publication will be
• reconfirmed;
• withdrawn;
• replaced by a revised edition, or
• amended.
60848 © IEC:2002 – 7 –
INTRODUCTION
The main reason for the revision of this standard is the desire of the users to increase the
standardised specification language with new concepts, allowing a structured and hierarchical
description.
Otherwise, in addition to the descriptive and functional aspects of the first edition, it now seems
necessary to add the formal and behavioural aspects, which are essential for the definition of a
real specification language.
For all these reasons, an overall review of the document is required.
This standard is mainly for people (design engineers, realisation engineers, maintenance
engineers, etc.) who need to specify the behaviour of a system (control-command of an
automatic machine, safety component, etc.). This specification language should also serve as
a communication means between designers and users of automated systems.

60848 © IEC:2002 – 9 –
GRAFCET SPECIFICATION LANGUAGE
FOR SEQUENTIAL FUNCTION CHARTS
1 Scope and object
1)
This International Standard defines the GRAFCET specification language for the functional
description of the behaviour of the sequential part of a control system.
This standard specifies the symbols and the rules for the graphical representation of this
language, as well as for its interpretation.
This standard has been prepared for automated production systems of industrial applications.
However no particular area of application is excluded.
Methods of development of a specification that makes use of GRAFCET are beyond the scope
of this stand
...