IEC 62424:2008
(Main)Representation of process control engineering - Requests in P&I diagrams and data exchange between P&ID tools and PCE-CAE tools
Representation of process control engineering - Requests in P&I diagrams and data exchange between P&ID tools and PCE-CAE tools
IEC 62424:2008 specifies how process control engineering requests are represented in a P&ID for automatic transferring data between P&ID and PCE tool and to avoid misinterpretation of graphical P&ID symbols for PCE. It also defines the exchange of process control engineering request relevant data between a process control engineering tool and a P&ID tool by means of a data transfer language (called CAEX). These provisions apply to the export/import applications of such tools. It cancels and replaces IEC/PAS 62424 published in 2005. This first edition constitutes a technical revision.
Répresentation de l'ingénierie de commande de processus - Demandes sous forme de diagrammes P&I et échange de données entre outils P&ID et outils PCE-CAE
La CEI 62424:2008 spécifie la méthode de représentation des demandes d'ingénierie de commande de processus dans un schéma de tuyauterie et d'instrumentation P&ID en vue d'un transfert automatique de données entre les outils P&ID et PCE, et de manière à prévenir toute interprétation erronée des symboles P&ID graphiques pour une application PCE. Elle définit également l'échange de données de type demandes d'ingénierie de commande de processus entre un outil d'ingénierie de commande de processus et un outil P&ID au moyen d'un langage de transfert de données (appelé CAEX). Ces dispositions s'appliquent aux fonctions exportation/importation de ces outils. Elle annule et remplace la CEI/PAS 62424 publiée en 2005. Cette première édition constitue une révision technique.
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IEC 62424
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
Representation of process control engineering – Requests in P&I diagrams and
data exchange between P&ID tools and PCE-CAE tools
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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IEC 62424
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
Representation of process control engineering – Requests in P&I diagrams and
data exchange between P&ID tools and PCE-CAE tools
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XF
ICS 35.240.50; 25.040.40 ISBN 2-8318-9942-7
– 2 – 62424 © IEC:2008(E)
CONTENTS
FOREWORD.6
INTRODUCTION.8
1 Scope.10
2 Normative references .10
3 Terms and definitions .10
4 Abbreviations .14
5 Conformity.15
6 Representation of PCE requests in a P&ID .16
6.1 PCE request and PCE loop .16
6.2 Objectives and principles .17
6.3 Requirements for the identification and representation of PCE requests .17
6.3.1 General .17
6.3.2 Types of lines .18
6.3.3 Displaying the location of the operator interface .18
6.3.4 PCE categories and processing functions .19
6.3.5 PCE request reference designation scheme .22
6.3.6 PU-vendor and typical identification.23
6.3.7 Device information.23
6.3.8 Alarming, switching and indicating.24
6.3.9 Safety-relevant, GMP and quality-relevant PCE requests .24
6.3.10 PCE control functions .25
7 Neutral data exchange of PCE relevant P&ID information.26
7.1 Objectives .26
7.2 Meaning of P&ID elements .26
7.3 PCE relevant information of P&ID tools .27
7.4 Formal description of PCE relevant information of P&ID tools.28
7.4.1 General .28
7.4.2 Modeling PCE relevant information using the CAEX system
description language .29
7.4.3 Basic CAEX mappings.29
7.4.4 Mapping of a PCE request interface to an external interface of the
corresponding plant hierarchy item .31
7.4.5 CAEX description of direct links between PCE request interfaces of
different plant hierarchy items .33
7.4.6 PCE loops .34
8 Additional PCE attributes.35
Annex A (normative) CAEX – Data model for machine information exchange.36
Annex B (informative) Examples of PCE requests.109
Annex C (normative) Full XML schema of the CAEX Model.119
Annex D (informative) CAEX modelling examples .128
Bibliography.135
Figure 1 – Information flow between P&ID and PCE tool .9
Figure 2 – Organization of PCE requests .17
Figure 3 – General representation of a PCE-Request in a P&ID.18
62424 © IEC:2008(E) – 3 –
Figure 4 – Multi-sensor element.18
Figure 5 – Local interface .19
Figure 6 – Manually operated switch in local control panel.19
Figure 7 – Pressure indication in central control room.19
Figure 8 – Example of PCE request identification .23
Figure 9 – Example of flow measurement with indication in the CCR delivered by
vendor A specified by typical A20 .23
Figure 10 – Example of pH-measurement with indication in the CCR .23
Figure 11 – Example of flow measurement with indication in the CCR and high and
low alarm .24
Figure 12 – Flow measurement with indication in the CCR and high alarm and a high-
high switching function.24
Figure 13 – Flow measurement with indication in the CCR and a high-high switch limit,
a high alarm, a low alarm and a low-low switch limit for a safety function.24
Figure 14 – GMP relevant, safety relevant and quality relevant flow measurement with
indication in the CCR .25
Figure 15 – Control function.25
Figure 16 – Safety relevant control function .25
Figure 17 – P&ID elements and associations (PCE relevant items are shown in dark
lines) .27
Figure 18 – Process data model (PCE relevant items are shown in dark lines).28
Figure 19 – PCE request data model .30
Figure 20 – Example of two plant sections and a signal connection via external
interfaces.32
Figure 21 – Simplified CAEX model of indirect links between PCE requests across
different plant hierarchy items.32
Figure 22 – Example of two plant sections and a direct connection .33
Figure 23 – Simplified CAEX model of direct links between PCE requests across
different plant hierarchy items.34
Figure A.1 – CAEX architecture of a SystemUnitClass .42
Figure A.2 – Example of a SystemUnitClassLib.42
Figure A.3 – Examples of Attributes .44
Figure A.4 – Examples of an InterfaceClassLib .46
Figure A.5 – Usage of Links.47
Figure A.6 – Example of a RoleClassLib .48
Figure A.7 – CAEX Role Concept.50
Figure A.8 – CAEX data definition for use case 1.50
Figure A.9 – CAEX data definition for use case 2.51
Figure A.10 – CAEX data definition for use case 3.51
Figure A.11 – CAEX data definition of a MappingObject.53
Figure A.12 – Example for a hierarchical plant structure .53
Figure A.13 – CAEX data structure .54
Figure A.14 – Distribution of data in several CAEX files .54
Figure A.15 – Referencing of external CAEX files .54
Figure A.16 – Example of how to use alias names .55
Figure A.17 – Multiple crossed structures .56
– 4 – 62424 © IEC:2008(E)
Figure B.1 – Local level indication, 1 process connection .109
Figure B.2 – Local level indication, 2 process connections.109
Figure B.3 – Local flow indication .109
Figure B.4 – Local pressure indication .109
Figure B.5 – Local temperature indication .109
Figure B.6 – Local control panel, pressure indication, high alarm.110
Figure B.7 – Local temperature indication, CCR temperature high alarm.110
Figure B.8 – Local pressure indication, CCR pressure high alarm and switch.110
Figure B.9 – CCR flow indication, device information: Orifice Plate.110
Figure B.10 – CCR pressure indication, low, low low and high alarm .110
Figure B.11 – CCR temperature indication and registration.111
Figure B.12 – CCR level indication and registration, 1 process connection .111
Figure B.13 – CCR level indication, 2 process connections.111
Figure B.14 – Two flow indications and flow ratio control in CCR .111
Figure B.15 – CCR flow indication and high alarm, flow control, control valve with extra
interlo
...
IEC 62424 ®
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Representation of process control engineering – Requests in P&I diagrams and
data exchange between P&ID tools and PCE-CAE tools
Représentation de l’ingénierie de commande de processus – Demandes sous
forme de diagrammes P&I et échange de données entre outils P&ID et outils
PCE-CAE
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester.
If you have any questions about IEC copyright or have an enquiry about obtaining additional rights to this publication,
please contact the address below or your local IEC member National Committee for further information.
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microfilms, sans l'accord écrit de la CEI ou du Comité national de la CEI du pays du demandeur.
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.
About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.
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IEC 62424 ®
Edition 1.0 2008-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Representation of process control engineering – Requests in P&I diagrams and
data exchange between P&ID tools and PCE-CAE tools
Représentation de l’ingénierie de commande de processus – Demandes sous
forme de diagrammes P&I et échange de données entre outils P&ID et outils
PCE-CAE
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
CODE PRIX XF
ICS 35.240.50; 25.040.40 ISBN 978-2-83220-537-2
– 2 – 62424 IEC:2008
CONTENTS
FOREWORD . 6
INTRODUCTION . 8
1 Scope . 10
2 Normative references . 10
3 Terms and definitions . 10
4 Abbreviations . 14
5 Conformity . 15
6 Representation of PCE requests in a P&ID . 16
6.1 PCE request and PCE loop . 16
6.2 Objectives and principles . 17
6.3 Requirements for the identification and representation of PCE requests . 17
6.3.1 General . 17
6.3.2 Types of lines . 18
6.3.3 Displaying the location of the operator interface . 18
6.3.4 PCE categories and processing functions . 19
6.3.5 PCE request reference designation scheme . 22
6.3.6 PU-vendor and typical identification . 23
6.3.7 Device information . 23
6.3.8 Alarming, switching and indicating . 24
6.3.9 Safety-relevant, GMP and quality-relevant PCE requests . 24
6.3.10 PCE control functions . 25
7 Neutral data exchange of PCE relevant P&ID information . 26
7.1 Objectives . 26
7.2 Meaning of P&ID elements . 26
7.3 PCE relevant information of P&ID tools . 27
7.4 Formal description of PCE relevant information of P&ID tools . 28
7.4.1 General . 28
7.4.2 Modeling PCE relevant information using the CAEX system
description language . 29
7.4.3 Basic CAEX mappings . 29
7.4.4 Mapping of a PCE request interface to an external interface of the
corresponding plant hierarchy item . 31
7.4.5 CAEX description of direct links between PCE request interfaces of
different plant hierarchy items . 33
7.4.6 PCE loops . 34
8 Additional PCE attributes . 35
Annex A (normative) CAEX – Data model for machine information exchange . 36
Annex B (informative) Examples of PCE requests . 109
Annex C (normative) Full XML schema of the CAEX Model . 119
Annex D (informative) CAEX modelling examples . 128
Bibliography . 135
Figure 1 – Information flow between P&ID and PCE tool . 9
Figure 2 – Organization of PCE requests . 17
Figure 3 – General representation of a PCE-Request in a P&ID . 18
62424 IEC:2008 – 3 –
Figure 4 – Multi-sensor element . 18
Figure 5 – Local interface . 19
Figure 6 – Manually operated switch in local control panel . 19
Figure 7 – Pressure indication in central control room . 19
Figure 8 – Example of PCE request identification . 23
Figure 9 – Example of flow measurement with indication in the CCR delivered by
vendor A specified by typical A20 . 23
Figure 10 – Example of pH-measurement with indication in the CCR . 23
Figure 11 – Example of flow measurement with indication in the CCR and high and
low alarm . 24
Figure 12 – Flow measurement with indication in the CCR and high alarm and a high-
high switching function . 24
Figure 13 – Flow measurement with indication in the CCR and a high-high switch limit,
a high alarm, a low alarm and a low-low switch limit for a safety function . 24
Figure 14 – GMP relevant, safety relevant and quality relevant flow measurement with
indication in the CCR . 25
Figure 15 – Control function . 25
Figure 16 – Safety relevant control function . 25
Figure 17 – P&ID elements and associations (PCE relevant items are shown in dark
lines) . 27
Figure 18 – Process data model (PCE relevant items are shown in dark lines) . 28
Figure 19 – PCE request data model . 30
Figure 20 – Example of two plant sections and a signal connection via external
interfaces . 32
Figure 21 – Simplified CAEX model of indirect links between PCE requests across
different plant hierarchy items . 32
Figure 22 – Example of two plant sections and a direct connection . 33
Figure 23 – Simplified CAEX model of direct links between PCE requests across
different plant hierarchy items . 34
Figure A.1 – CAEX architecture of a SystemUnitClass . 42
Figure A.2 – Example of a SystemUnitClassLib. 42
Figure A.3 – Examples of Attributes . 44
Figure A.4 – Examples of an InterfaceClassLib . 46
Figure A.5 – Usage of Links . 47
Figure A.6 – Example of a RoleClassLib . 48
Figure A.7 – CAEX Role Concept .
...
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