ISO 10303-203:1994

Is0
INTERNATIONAL
10303-203
STANDARD
First edition
1994-12-15
Industrial automation systems and
duct data representation
integration - Pro
and exchange -
Part 203:
: Configuration controlled
Application protoco
design
- Rep&en ta tion
Sys t&mes d ‘automa tisa tion indus trielle et in t6gra tion
et bchange de don&es de produits -
Partie 203: Protocole d ’applica tion: Conception con tr6ke de configuration
Reference number
IS0 10303-203:1994(E)

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IS0 10303=203:1994(E)
Page
Contents
1
1 Scope.
3
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4
3 Definitions and abbreviations .
4
....................................
3.1 Terms defined in IS0 10303-l
5
...................................
3.2 Terms defined in IS0 10303-31
5
...................................
3.3 Terms defined in IS0 10303-42
7
...................................
3.4 Terms defined in IS0 10303-43
7
...................................
3.5 Terms defined in IS0 10303-44
8
3.6 Other definitions .
8
.................................
3.6.1 boundary representation model
8
3.6.2 design phase .
8
3.6.3 mechanical part . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
3.6.4 solid model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
............................................
3.6.5 sub-assembly
8
3.6.6 wireframe model .
8
3.7 Abbreviations .
9
4 Information requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9
. 4.1 Units of functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
boundary representation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.1 advanced
- -
11
4.1.2 authorization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
4.1.3 bill of material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11
. . . . . . . . . . . . . . . . . . . . . . . .
deskn-activity control . . . . . . . . . . . . . .
4.1.4
- -
12
information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
4.1.5 design
-
12
4.1.6 effectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13
4.1.7 end item identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- -
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.1.8 faceted boundary representation
-
-
13
4.1.9 manifold surface with topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
- - -
13
4.1.10 non topological surface and wireframe . . . . . . . . . . . . . . . . . . . . . . . . . . .
- - -
-
0 IS0 1994
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 the publisher.
International Organization for Standardization
Case Postale 56 l CH- 1211 Genkve 20 l Switzerland
Printed in Switzerland
ii

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IS0 10303=203:1994(E)
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14
.........................................
4.1.11 part identification
14
4.1.12 shape .
14
4.1.13 source control .
15
topology .
4.1.14 wireframe with
-
-
15
...........................................
4.2 Application objects
33
.........................................
4.3 Application assertions
39
.......................................
5 Application interpreted model
39
..............................................
5.1 Mapping table
89
.....................................
5.2 AIM EXPRESS short listing
96
............................
5.2.1 Fundamental concepts and assumptions
99
.............................
5.2.2 Configuration controlled design types
102
...........................
5.2.3 Configuration controlled design entities
150
............................
5.2.4 Configuration controlled design rules
209
..........................
5.2.5 Configuration controlled design functions
243
.......................................
6 Conformance requirements
244
....................................
6.1 Conformance class 1 entities
247
....................................
6.2 Conformance class 2 entities
252
....................................
6.3 Conformance class 3 entities
256
....................................
6.4 Conformance class 4 entities
261
....................................
6.5 Conformance class 5 entities
265
....................................
6.6 Conformance class 6 entities
Annexes
270
A AIM EXPRESS expanded listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
401
B AIM short names of entities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
412
C Protocol Implementation Conformance Statement (PIGS) proforma . . . . . . . . . . . . . . .
414
D Implementation method specific requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . .
415
......................................
E Information object registration
415
.......................................
E.l Document identification
415
........................................
E.2 Schema identification
415
..........................
E.2.1 config control design expanded schema
415
..........................
E.2.2 config-control-design short form schema
- -
416
........................................
F Application activity model
417
...........................................
F.l AAMdefinitions
420
............................................
F.2 AAM Diagrams
.*.
111

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IS0 10303=203:1994(E) aIso
G Application reference mddel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 423
H AIM EXPRESS-G . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
431
J AIM EXPRESS listing . . . . . . . . . . . . . . . . . . . . . . . . e . . . . . . . . . . . . . . . . . . 471
....................................
K Application protocol usage guide
472
K.l Usage test purposes .
472
K.2 Example part .
476
L Bibliography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
481
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
482
Figures
Figure F.l - IDEFO basic notation . 416
Figure F.2 - A0 Manage product development in IDEFO
.......................
421
Figure F.3 - A3 Develop product design in IDEFO .
422
Figure G.1 - ARM diagram 1 of 7 in IDEFlX .
424
FigureG.2-ARMdiagram2of7inIDEFlX .
425
FigureG.3-ARMdiagram3of7inIDEFlX .
426
FigureG.4-ARMdiagram4of7inIDEFlX .
427
Fig-ureG.5-ARMdiagram5of7inIDEFlX .
428
FigureG.6-ARMdiagram6of7inIDEFlX .
429
FigureG.7-ARMdiagram7of7inIDEFlX .
430
Figure H. 1 - application context - AIM EXPRESS-G diagram 1 of 39 . 432
Figure H.2 - product definition - AIM EXPRESS-G diagram 2 of 39
............... 433
Figure H.3 - product category - AIM EXPRESS-G diagram 3 of 39 . 434
Figure H.4 - property definition - AIM EXPRESS-G diagram 4 of 39
.............. 435
Figure H.5 - property representation - AIM EXPRESS-G diagram 5 of 39 . 436
Figure H.6 - shape representation relationship - AIM EXPRESS-G diagram 6 of 39
...... 437
Figure H.7 - representation - AIM EXPRESS-G diagram 7 of 39 . 438
Figure H.8 - geometric representation items - AIM EXPRESS-G diagram 8 of 39 .
439
Figure H.9 - topological representation items AIM EXPRESS-G diagram 9 of 39 .
440
.....................
Figure H.10 - point - AIM EXPRESS-G diagram 10 of 39
441
Figure H. 11 - geometric orientation - AIM EXPRESS-G diagram 11 of 39 .
442
Figure H. 12 - curve - AIM EXPRESS-G diagram 12 of 39 . 443
Figure H.13 - conic - AIM EXPRESS-G diagram 13 of 39 .
444
Figure H.14 - bounded curves - AIM EXPRESS-G diagram 14 of 39 . 445
AIM EXPRESS-G diagram 15 of 39
Figure H. 15 - surface curve - . 446
Figure H. 16 - b-spline curve - AIM EXPRESS-G diagram 16 of 39 . 447
AIM EXPRESS-G diagram 17 of 39
Figure H. 17 - surface - . 448
iv

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aIso
Figure H. 18 - elementary surfaces - AIM EXPRESS-G diagram 18 of 39 . 449
Figure H.19 - bounded surface - AIM EXPRESS-G diagram 19 of 39 .
450
Figure H.20 - b-spline surface - AIM EXPRESS-G diagram 20 of 39 .
451
Figure H.21 - topology - AIM EXPRESS-G diagram 21 of 39 .
452
Figure H.22 - shell - AIM EXPRESS-G diagram 22 of 39 . 453
- AIM EXPRESS-G diagram 23 of 39
Figure H.23 - solid model . 454
Figure H.24 - surface and wireframe models - AIM EXPRESS-G diagram 24 of 39 . 455
Figure H.25 - document - AIM EXPRESS-G diagram 25 of 39 .
456
Figure H.26 - approval - AIM EXPRESS-G diagram 26 of 39 . 457
Figure H.27 - person and organization - AIM EXPRESS-G diagram 27 of 39 . 458
Figure H.28 - person and organization assignment - AIM EXPRESS-G diagram 28 of 39 . . 459
Figure H.29 - date and time - AIM EXPRESS-G diagram 29 of 39 . 460
Figure H.30 - date and time assignment - AIM EXPRESS-G diagram 30 of 39 . -461
Figure H.31 - work and change documentation - AIM EXPRESS-G diagram 31 of 39
.... 462
Figure H.32 - certification - AIM EXPRESS-G diagram 32 of 39 . 463
Figure H.33 - contract - AIM EXPRESS-G diagram 33 of 39 .
464
Figure H.34 - security classification - AIM EXPRESS-G diagram 34 of 39 . 465
Figure H.35 - units - AIM EXPRESS-G diagram 35 of 39 . 466
Figure H.36 - measure with unit - AIM EXPRESS-G diagram 36 of 39
............. 467
Figure H.37 - measures - AIM EXPRESS-G diagram 37 of 39 . 468
Figure H.38 - product structure - AIM EXPRESS-G diagram 38 of 39 . 469
- EXPRESS-G diagram 39 of 39
Figure H.39 - configuration . 470
Tables
.................. 41
Table 1 - Mapping table - advanced boundary representation UoF
..............................
Table 2 - Mapping table - authorization UoF T 42
.............................
Table 3 - Mapping table - bill of materials UoF 47
Table 4 - Mapping table - design-activity control UoF .
53
........................... 61
Table 5 - Mapping table - design-information UoF
.................................
Table 6 - Mapping table - effectivity UoF 64
Table 7 - Mapping table - end item identification UoF .
67
...................
Table 8 - Mapping table - faceted boundary representation UoF 69
...................
Table 9 - Mapping table - manifold surface-with topology UoF 70
.............
Table 10 - Mapping table - non topological-surf&e and wireframe UoF 71
.......................
Table 11 - Mapping table - part-identification UoF -. . -. 72
...................................
Table 12 - Mapping table - shapi UoF 80
Table 13 - Mapping table - source control UoF .
83
.......................
Table 14 - Mapping table - wireframe with topology UoF 87
- -
.....................................
Table 15 - Conformance Options 244
........................... ; ..... 401
TableB.l - AIM short names of entities

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IS0 10303=203:1994(E) (Wo
Foreword
The International Organization for Standardization (ISO) is a worldwide federation of national
standards bodies (IS0 member bodies). The work of preparing International Standards is normally
carried out through IS0 technical committees. Each member body interested in a subject for which
a technical committee has been established has the right to be represented on that committee.
International organizations, governmental and non-governmental, in liaison with ISO, also take part
in the work. IS0 collaborates closely with the International Electrotechnical Commission (IEC) on
all matters of electrotechnical standardization.
Draft International Standards adopted by technical committees are circulated to the member bodies
for voting. Publication as an International Standard requires approval by at least 75% of the member
bodies casting a vote.
International Standard IS0 10303-203 was prepared by Technical Committee ISO/TC 184, Industrial
automation systems and integration, Subcommittee SC4, Industrial data and global manufacturing
languages.
IS0 10303 consists of the following parts under the general title Industrial automation systems and
integration - Product data representation and exchange:
- Part 1, Overview and fundamental principles;
- Part 11, Description methods: The EXPRESS language reference manual;
- Part 21, Implementation methods: Clear text encoding of the exchange structure;
- Part 22, Implementation methods: Standard data access interface;
- Part 31, Conformance testing methodology and framework: General concepts;
- Part 32, Conformance testing methodology and framework: Requirements on testing laboratories
and clients;
- Part 41, Integrated generic resources: Fundamentals of product description and support;
- Part 42, Integrated generic resources: Geometric and topological representation;
- Part 43, Integrated generic resources: Representation structures;
- Part 44, Integrated generic resources: Product structure configuration;
- Part 45, Integrated generic resources: Materials;

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OISO IS0 10303=203:1994(E)
- Part 46, Integrated generic resources: Visual presentation;
- Part 47, Integrated generic resources: Shape variation tolerances;
- Part 49, Integrated generic resources: Process structure and properties;
- Part 101, Integrated application resources: Draughting;
- Part 104, Integrated application resources: Finite element analysis;
- Part 105, Integrated application resources: Kinematics;
- Part 201, Application protocol: Explicit draughting;
- Part 202, Application protocol: Associative draughting;
- Part 203, Application protocol: Configuration controlled design;
- Part 207, Application protoco : Sheet metal die planning and design;
- Part 210, Application protoco : Printed circuit assembly product design data;
: Numerical control process plans for machined parts.
- Part 213, Application protoco
The numbering of the parts
The structure of this International Standard is described in IS0 10303-l.
of this International Standard reflects its structure:
- Part 1 1 specifies the desription methods;
-Parts 21 and 22 specify the implementation methods;
31 and 32 specify the conformance testing methodology and framework;
-Parts
- Parts 41 to 49 specify the integrated generic resources;
- Parts 101 to 105 specify the integrated application resources;
- Parts 201 to 2 13 specify the application protocols.
Should further parts be published, they will follow the same numbering pattern.
Annexes A, B, C, D and E form an integral part of this part of IS0 10303. Annexes F, G, H, J and
K are for information only.
vii

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IS0 10303=203:1994(E)
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Diskette
Users should note that this part of IS0 10303 comprises a diskette:
- the short names of entities given in annex B are also included on the diskette;
- the EXPRESS listings (annex A) are provided on the diskette only;
a method to enable users to report errors in the documentation is given. Full details are
provided in the file.
. . .
Vlll

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IS0 10303=203:1994(E)
Introduction
IS0 10303 is an International Standard for the computer-interpretable representation and exchange
of product data. The objective is to provide a neutral mechanism capable of describing product data
throughout the life cycle of a product, independent from any particular system. The nature of this
description makes it suitable not only for neutral file exchange, but also as a basis for implementing
and sharing product databases and archiving.
This International Standard is organized as a series of parts, each published separately. The parts of
IS0 10303 fall into one of the following series: description methods, integrated resources, application
protocols, abstract test suites, implementation methods, and conformance testing. The series are
described in IS0 103034. This part of IS0 10303 is a member of the application protocol series.
This part of IS0 10303 specities an application protocol (AP) for the use of product data within a
defined context which satisties an industrial need to exchange configuration-controlled 3D product
design data of mechanical parts and assemblies. In order to specify the composition of products,
organizations use many computer-based application systems. Integral to the definition of a product
are the specification of its shape, the specification of its configurations and the applicability of its
possibly multiple definitions to a particular configuration. This data may reside on one or more
application systems within an organization. The integration of the data that defines the shape of a
product with the data concerning its configuration is essential to an organization ’s ability to define
its products without relying on redundant data in disparate application systems. In order for the
definition of the design of products to be communicated, an organization must be able to share its
product data with partners, vendors, and customers.
This application protocol detines the exchange of product definitions with three-dimensional shape
representations and the data which defines and controls the configuration of those product definitions.
This application protocol is concerned solely with the design phase of the product life cycle. Only
the designs of mechanical parts and assemblies may be exchanged using this specification. The
specification of the 3D shape of a mechanical part or assembly in this application protocol may be
made by any of five different types of geometric representation.
Although important to the design of the product, the product ’s shape is not of primary focus in this
The primary focus of this specification is the data which controls the tracking
application protocol.
and management of the product. This data includes the following:
- identification of a product to an organization ’s customers and the link of the design identification
of the components which comprise the product;
- the documentation of formal change and release of designs for the product;
- the history of the development of the product as it goes through the formal initiation, change and
release process;
ix

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IS0 10303=203:1994(E) OISO
- the structure of the relationship of each of the components of the product to the whole;
- additional information concerning materials, processes, finishes and other design requirements
about the product;
- the identification of qualified suppliers for the product or the design of the product.
Application protocols provide the basis for developing implementations of IS0 10303 and abstract test
suites for the conformance testing of AP implementations.
Clause 1 defines the scope of the application protocol and summarizes the functionality and data
covered by the AP. An application activity model that is the basis for the definition of the scope is
provided in annex F. The information requirements of the application are specified in clause 4 using
terminology appropriate to the application. A graphical representation of the information
requirements, referred to as the application reference model, is given in annex G.
Resource constructs are interpreted to meet the information requirements. This interpretation produces
the application interpreted model (AIM). This interpretation, given in 5.1, shows the correspondence
between the information requirements and the AIM. The short listing of the AIM specifies the
interface to the integrated resources and is given in 5.2. Note that the definitions and EXPRESS
provided in the integrated resources for constructs used in the AIM may include select list items and
subtypes which are not imported into the AIM. The expanded listing given in Annex A contains the
complete EXPRESS for the AIM without annotation. A graphical representation of the AIM is given
in annex H. Additional requirements for specific implementation methods are given in annex D.

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INTERNATIONAL STANDARD OISO IS0 10303-203: 1994(E)
Industrial automation systems and integration -
Product data representation and exchange -
Part 203:
A plication protocol: Configuration controlled 3D designs
o P mechanical parts and assemblies
1 scope
This part of IS0 10303 specifies the integrated resources necessary for the scope and information
requirements for the exchange between application systems of configuration-controlled 3D designs
of mechanical parts and assemblies. Configuration in this context only includes data and processes
that control the 3D product design data. Exchange is used as a scoping consideration to narrow the
scope to only those data which are exchanged as part of the 3D product definition. Organizations
exchanging data within the scope of this part of IS0 10303 may have a contractual relationship, the
details of which are outside the scope of this part.
NOTE -~The application activity model in annex E provides a graphical representation of the processes and
information flows which are the basis for the definition of the scope of this part of IS0 10303.
The following are within the scope of this part of IS0 10303:
a) Products that are mechanical parts and assemblies;
b) Product definition data and configuration control data pertaining to the design phase of a
product ’s development;
c) The change of a design and data related to the documentation of the change process;
d) Five types of shape representations of a part that include wireframe and surface without
topology, wireframe geometry with topology, manifold surfaces with topology, faceted boundary
representation, and boundary representation;
e) Alternate representations of the data by different disciplines during the design phase of a
product ’s 1 ife cycle;
f) Identification of government, industry, company or other specifications for design, process,
surface finish, and materials which are specified by a designer as being applicable to the design of
the product;

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IS0 10303-203:1994(E)
The identification of government, industry, company, or other standard for the purpose
g>
product ’s design;
of their inclusion in a
h) Data that are necessary for the tracking of a design ’s release;
i) Data that are necessary to track the approval of a design, a design aspect, or a configuration
control aspect of a product;
j) Data that identify the supplier of either the product or the design and, where required by an
organization, qualification information for the supplier;
k) If a part is being designed under a contract, the identification of, and reference to, that contract
under which a design is developed;
1) The identification of the security classification of a single part or a part when it is a component
in an assembly;
m) Data that is used in, or results from, the analysis or test of a design which is used as evidence
for consideration of a change to a design.
The following are outside the scope of part of IS0 10303:
a) Data that is used in, or results from, the analysis or test of a design that is not used as evidence
for consideration of a change to a design;
b) Data that results in changes to the design during the initial design evolution prior to its release;
c) Product definition data and configuration control data pertaining to any life cycle phase of a
product ’s development other than design;
d) The business data for the management of a design project;
e) Alternate representat ions of the data by different disciplines outside of the design phase (e.g.,
manufacturing);
f) The use of constructive solid geometry for the representation of objects;
g) Data that pertains to the visual presentation of any of the shape or configuration control data.
2

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IS0 10303=203:1994(E)
OISO
2 Normative references
The following standards contain provisions which, through reference in this text, constitute provisions
of this International Standard. At the time of publication, the editions indicated were valid. All,
standards are subject to revision, and parties to agreements based on this International Standard are
encouraged to investigate the possibility of applying the most recent editions of the standards indicated
below. Members of the IEC and IS0 maintain registers of currently valid International Standards.
IS0 3 1: 1992, Quantities and units.
IS0 1ooO: 1992, SI units and recommendations for the use of their multiples and of certain other units.
- Open systems interconnection - Abstract syntax
ISO/IEC 8824-1 :-l), Information technology
notation one (ASN. 1) - Part I: Specification of basic notation.
IS0 10303- 1: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 1: Overview and fundamental principles.
IS0 10303-11: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 1 I: Description methods: The EXPRESS language reference manual.
IS0 10303-2 1: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 21: Clear text encoding of the exchange structure.
IS0 10303-3 1: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 31: Conformance testing methodology and framework: General concepts.
ISO 10303-41: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 41: Integrated generic resources: Fundamentals of product description and support
ISO 10303-42: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 42: Integrated generic resources: Geometric and topological representation.
ISO 10303-43: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 43: Integrated generic resources: Representation structures.
ISO 10303-M: 1994, Industrial automation systems and integration - Product data representation and
exchange - Part 44: Integrated generic resources: Product structure configuration.
‘)To be published.

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IS0 10303-203:1994(E)
3 Definitions and abbreviations
For the purposes of this part of IS0 10303, the following definitions and abbreviations apply.
3.1 Terms defined in IS0 103034
This part of IS0 10303 makes use of the following terms defined in IS0 10303-l.
- abstract test suite;
- application;
- application activity model;
- application context;
- application interpreted model;
- application object;
- application protocol;
- application reference model;
- assembly;
- component;
- conformance class;
I conformance requirement;
- data;
- data exchange;
- implementation method;
- information;
- integrated resource;
- interpretation;
4

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IS0 10303-203:1994(E)
OISO
- PICS proforma;
- product;
- product data;
- protocol implemtnation conformance statement;
- structure;
- unit of functionality.
3.2 Terms defined in IS0 10303-31
This part of IS0 10303 makes use of the following terms defined in IS0 10303-31.
- conformance testing;
- preprocessor;
- postprocessor;
3.3 Terms defined in IS0 1030342
This partof-IS0 10303 makes use of the following terms defined in IS0 10303-42.
- arcwisexonnected;
- axi-symmetric;
- bound;.
- boundary;
- boundary representation solid model;
- closed curve;
- closed surface;
- COMeCtd;
- connected component;
5

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- curve;
- cycle;
- dimensionality;
- domain;
- extent;
- finite;
- geometric coordinate system;
- graph;
- handle;
- homomorphic;
.
- 11st
;
- d-manifold with boundary;
- open curve;
- open surface;
- orienta
...