ISO/TS 21308-4:2007

TECHNICAL ISO/TS
SPECIFICATION 21308-4
First edition
2007-12-01
Road vehicles — Product data exchange
between chassis and bodywork
manufacturers (BEP) —
Part 4:
Mapping to STEP application
protocol 239
Véhicules routiers — Échange de données de produit entre les
fabricants de châssis et de carrosseries (BEP) —
Partie 4: Élaboration en accord avec le protocole d'application 239
de STEP
Reference number
©
ISO 2007
PDF disclaimer
This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but
shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In
downloading this file, parties accept therein the responsibility of not infringing Adobe's licensing policy. The ISO Central Secretariat
accepts no liability in this area.
Adobe is a trademark of Adobe Systems Incorporated.
Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation
parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by ISO member bodies. In
the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below.

©  ISO 2007
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 ISO at the address below or
ISO's member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2007 – All rights reserved

Contents Page
Foreword. iv
Introduction . v
0.1 General. v
0.2 Intentions of this Technical Specification. v
0.3 Relationship with STEP. v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions. 2
4 Abbreviated terms . 2
5 Overview . 3
5.1 General. 3
5.2 Mapping techniques and instantiation diagrams . 4
6 Exchange specification. 4
6.1 General. 4
6.2 Data exchange sets and capabilities . 6
6.3 Type and individual data. 7
6.4 External_class_library. 7
6.5 Attributes . 7
6.6 Partitioning of mapping examples. 8
7 Instantiation diagrams and related part files . 8
7.1 Part/type root. 8
7.2 Classification of part . 10
7.3 Individual root . 11
7.4 Classification of individual root . 12
7.5 Type properties . 13
7.6 Individual properties. 14
7.7 Organization information . 15
7.8 Project information – Example 1 . 16
7.9 Project information – Example 2 . 17
7.10 Purchase order information. 18
7.11 Delivery information . 19
7.12 Legal reference . 20
Annex A (informative) STEP information background . 22
Annex B (informative) Complete Part 21 text file (with data taken from earlier examples) . 23
Annex C (informative) Complete Part 28 OSEB XML file (with data taken from earlier examples). 26
Bibliography . 32

Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
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. ISO collaborates closely with the
International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the 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.
In other circumstances, particularly when there is an urgent market requirement for such documents, a
technical committee may decide to publish other types of document:
⎯ an ISO Publicly Available Specification (ISO/PAS) represents an agreement between technical experts in
an ISO working group and is accepted for publication if it is approved by more than 50 % of the members
of the parent committee casting a vote;
⎯ an ISO Technical Specification (ISO/TS) represents an agreement between the members of a technical
committee and is accepted for publication if it is approved by 2/3 of the members of the committee casting
a vote.
An ISO/PAS or ISO/TS is reviewed after three years in order to decide whether it will be confirmed for a
further three years, revised to become an International Standard, or withdrawn. If the ISO/PAS or ISO/TS is
confirmed, it is reviewed again after a further three years, at which time it must either be transformed into an
International Standard or be withdrawn.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO/TS 21308-4 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 6,
Terms and definitions of dimensions and masses.
ISO/TS 21308 consists of the following parts, under the general title Road vehicles — Product data exchange
between chassis and bodywork manufacturers (BEP):
⎯ Part 1: General principles [Publicly Available Specification]
⎯ Part 2: Dimensional bodywork exchange parameters
⎯ Part 3: General, mass and administrative exchange parameters
⎯ Part 4: Mapping to STEP application protocol 239 [Technical Specification]
iv © ISO 2007 – All rights reserved

Introduction
0.1 General
Truck chassis manufacturers deal with the configuration of chassis in infinite numbers of possible
combinations, and bodywork manufacturers produce highly customized superstructures on these chassis.
Bodywork manufacturers build their superstructures on chassis of several different truck brands.
The production efficiency of a specific truck chassis and its body combinations can be greatly improved by
ensuring that the correct technical and commercial information about the specific chassis is communicated
with the bodywork manufacturer in advance. The information needs to be reliable such that the bodywork
manufacturer has sufficient confidence to prefabricate the body or the superstructure before the chassis is
delivered. With uniform conditions, unambiguous dimensions and supplementary information can be
established, transferred and correctly interpreted by the receiver. Increased information efficiency improves
quality and reduces lead times.
The ISO 21308 series specifies a system of codes to exchange specific data between chassis and bodywork
manufacturers, providing a platform for efficient communication between the parties. The process of
exchanging data according to the ISO 21308 series is not dependent on the degree of IT sophistication. Any
medium can be used, from fax or e-mail to a STEP (standard for the exchange of product model data)
protocol.
Exchanging codes in accordance with the ISO 21308 series is useful in various situations, e.g. for design and
manufacturing, technical specifications, technical drawings and leaflets.
The codes provide the basic information level, and are also the basic input parameters for a data exchange
system based on the STEP protocol. This Technical Specification covers the mapping of these data to STEP
application protocol 239 (STEP AP 239).
0.2 Intentions of this Technical Specification
This Technical Specification is aimed at those parties interested in using STEP for their transmission of
product data. STEP can be implemented in different ways when used for the exchange of BEP (bodywork
exchange parameter) data. The intention with this Technical Specification is to create a basis for compatible
STEP applications when used for exchanging BEP data. In order to achieve this, it is necessary to map the
BEP properties to the STEP application in a uniform way. This Technical Specification specifies the general
principles of this mapping and shows examples of mapping of specific properties, as well as a complete STEP
file for the transmission of data.
This Technical Specification is intended for use by implementation and software design experts with in-depth
knowledge of the ISO 10303 series on STEP product data. Special knowledge of object-oriented syntaxes and
the data descriptive language of STEP, EXPRESS and EXPRESS-G (the graphical notation) is necessary for
the understanding and assimilation of this Technical Specification.
0.3 Relationship with STEP
The product data model schema of main interest is the ARM (application reference model) contained in STEP
application protocol 239 (ISO 10303-239), published in 2005.
In addition, complementary standards and documentation are developed within OASIS (a part of W3C) to
further assist in a successful usage and implementation of STEP AP 239 based solutions, referred to as data
exchange sets (DEXs).
TECHNICAL SPECIFICATION ISO/TS 21308-4:2007(E)

Road vehicles — Product data exchange between chassis
and bodywork manufacturers (BEP) —
Part 4:
Mapping to STEP application protocol 239
1 Scope
This Technical Specification describes the mapping to STEP application protocol 239 for the exchange of
dimensional data between truck chassis manufacturers and bodywork manufacturers. It applies to commercial
vehicles, as defined in ISO 3833, which have a maximum gross vehicle mass greater than 3 500 kg.
The process of exchanging the above information can involve
⎯ the chassis manufacturer,
⎯ the chassis importer,
⎯ the chassis dealer,
⎯ one or more bodywork manufacturers, and
⎯ bodywork component suppliers, e.g. manufacturers of demountable bodies, cranes and loading
equipment, tipping equipment.
2 Normative references
The following referenced documents a
...