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ISO 10303-11:2004

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Industrial automation systems and integration — Product data representation and exchange — Part 11: Description methods: The EXPRESS language reference manual

Industrial automation systems and integration — Product data representation and exchange — Part 11: Description methods: The EXPRESS language reference manual

ISO 10303 specifies a language by which aspects of product data can be defined. The language is called EXPRESS. ISO 10303-11:2004 also specifies a graphical representation for a subset of the constructs in the EXPRESS language. This graphical representation is called EXPRESS-G. EXPRESS is a data specification language as defined in ISO 10303-1. It consists of language elements that allow an unambiguous data definition and specification of constraints on the data defined. The following are within the scope of ISO 10303-11:2004: data types; constraints on instances of the data types. The following are outside the scope of this part of ISO 10303: definition of database formats; definition of file formats; definition of transfer formats; process control; information processing; exception handling. EXPRESS is not a programming language.

Systèmes d'automatisation industrielle et intégration — Représentation et échange de données de produits — Partie 11: Méthodes de description: Manuel de référence du langage EXPRESS

General Information

Status
Published
Publication Date
09-Nov-2004
ICS
25.040.40 - Industrial process measurement and control
Technical Committee
ISO/TC 184/SC 4 - Industrial data
Drafting Committee
ISO/TC 184/SC 4/WG 11 - Implementation methods and conformance methods
Current Stage
9020 - International Standard under periodical review
Start Date
15-Oct-2024
Completion Date
15-Oct-2024
Ref Project

Relations

Revises
ISO 10303-11:1994 - Industrial automation systems and integration — Product data representation and exchange — Part 11: Description methods: The EXPRESS language reference manual
Effective Date
15-Apr-2008
Revises
ISO 10303-11:1994/Cor 1:1999 - Industrial automation systems and integration — Product data representation and exchange — Part 11: Description methods: The EXPRESS language reference manual — Technical Corrigendum 1
Effective Date
15-Apr-2008

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ISO 10303-11:2004 - Industrial automation systems and integration -- Product data representation and exchange
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INTERNATIONAL ISO
STANDARD 10303-11
Second edition
2004-11-01
Industrial automation systems and
integration — Product data
representation and exchange —
Part 11:
Description methods: The EXPRESS
language reference manual
Systèmes d'automatisation industrielle et intégration — Représentation
et échange de données de produits —
Partie 11: Méthodes de description: Manuel de référence du langage
EXPRESS
Reference number
©
ISO 2004
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©  ISO 2004
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
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Published in Switzerland
ii © ISO 2004 – All rights reserved

Contents Page
0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
0.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
0.2 Language overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xii
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Terms and definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.1 Terms defined in ISO 10303–1. . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.2 Terms defined in ISO/IEC 10646 . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3.3 Other terms and definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
4 Conformance requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1 Formal specifications written in EXPRESS . . . . . . . . . . . . . . . . . . . . 5
4.1.1 Lexical language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4.1.2 Graphical form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2 Implementations of EXPRESS . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2.1 EXPRESS language parser . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4.2.2 Graphical editing tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Fundamental principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Language specification syntax . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.1 The syntax of the specification . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6.2 Special character notation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Basic language elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1 Character set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.1.1 Digits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.1.2 Letters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.1.3 Special characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1.4 Underscore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1.5 Whitespace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.1.6 Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.2 Reserved words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.2.1 Keywords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.2.2 Reserved words which are operators . . . . . . . . . . . . . . . . . . . . . 14
7.2.3 Built-in constants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.2.4 Built-in functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.2.5 Built-in procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.3 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.4 Identifiers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.5 Literals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.5.1 Binary literal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.5.2 Integer literal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.3 Real literal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7.5.4 String literal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
7.5.5 Logical literal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8 Data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.1 Simple data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
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8.1.1 Number data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.1.2 Real data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8.1.3 Integer data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1.4 Logical data type. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1.5 Boolean data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1.6 String data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1.7 Binary data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
8.2 Aggregation data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
8.2.1 Array data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
8.2.2 List data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8.2.3 Bag data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.2.4 Set data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8.2.5 Value uniqueness on aggregates . . . . . . . . . . . . . . . . . . . . . . . . 27
8.3 Named data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.3.1 Entity data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.3.2 Defined data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.4 Constructed data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.4.1 Enumeration data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
8.4.2 Select data type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.5 Generalized data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.6 Data type usage classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
8.6.1 Instantiable data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.6.2 Parameter data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.6.3 Underlying data types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
9 Declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.1 Type declaration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
9.2 Entity declaration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
9.2.1 Attributes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
9.2.2 Local rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
9.2.3 Subtypes and supertypes . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
9.2.4 Abstract entity data type . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
9.2.5 Subtype/supertype constraints . . . . . . . . . . . . . . . . . . . . . . . . 55
9.2.6 Implicit declarations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
9.2.7 Specialization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
9.3 Schema . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
9.4 Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
9.5 Algorithms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
9.5.1 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
9.5.2 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.5.3 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
9.5.4 Local variables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
9.6 Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
9.7 Subtype constraints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
9.7.1 Abstract supertype constraint . . . . . . . . . . . . . . . . . . . . . . . . 75
9.7.2 Total coverage subtypes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
9.7.3 Overlapping subtypes and their specification . . . . . . . . . . . . . . . . 76
10 Scope and visibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
10.1 Scope rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
10.2 Visibility rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
10.3 Explicit item rules . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.3.1 Alias statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
iv �cISO 2004 — All rights reserved

10.3.2 Attribute . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.3.3 Constant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.3.4 Enumeration item . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.3.5 Entity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
10.3.6 Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
10.3.7 Parameter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.3.8 Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.3.9 Query expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
10.3.10 Repeat statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.3.11 Rule . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
10.3.12 Rule label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.3.13 Schema . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
10.3.14 Subtype constraint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
10.3.15 Type . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
10.3.16 Type label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
10.3.17 Variable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
11 Interface specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
11.1 Use interface specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.2 Reference interface specification . . . . . . . . . . . . . . . . . . . . . . . . . . 87
11.3 The interaction of use and reference . . . . . . . . . . . . . . . . . . . . . . . . 88
11.4 Implicit interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.4.1 Constant interfaces. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
11.4.2 Defined data type interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . 90
11.4.3 Entity data type interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . 90
11.4.4 Function interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11.4.5 Procedure interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11.4.6 Rule interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
11.4.7 Subtype constraint interfaces . . . . . . . . . . . . . . . . . . . . . . . . . 91
12 Expression . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
12.1 Arithmetic operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
12.2 Relational operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94
12.2.1 Value comparison operators . . . . . . . . . . . . . . . . . . . . . . . . . . 95
12.2.2 Instance comparison operators . . . . . . . . . . . . . . . . . . . . . . . . 99
12.2.3 Membership operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
12.2.4 Interval expressions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
12.2.5 Like operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
12.3 Binary operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
12.3.1 Binary indexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
12.3.2 Binary concatenation operator . . . . . . . . . . . . . . . . . . . . . . . . 104
12.4 Logical operators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
12.4.1 NOT operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
12.4.2 AND operator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
12.4.3 OR operator . . . . . . . . . . . . . . . . . . . . . . . . . . . .
...

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ISO
ISO 10303-2:2024(Main)
Industrial automation systems and integration — Product data representation and exchange — Part 2: Vocabulary

This document specifies the vocabulary for the ISO 10303 series.

  • Standard
    1110 pages
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ISO
ISO 10303-1:2024(Main)
Industrial automation systems and integration — Product data representation and exchange — Part 1: Overview and fundamental principles

This document provides an overview of the ISO 10303 series. This document defines the architectural principles of product information representation and exchange used in the ISO 10303 series. It specifies the characteristics of the various sets of parts in the ISO 10303 series and the relationships among them. The following are within the scope of this document: — scope statement for the ISO 10303 series as a whole; — overview of the ISO 10303 series; — architectures of the ISO 10303 series; — structure of the ISO 10303 series; — overview of data specification methods used in the ISO 10303 series; NOTE This includes the EXPRESS data specification language and graphical presentation of product information models. — introduction to the ISO 10303 series: — integrated resources (IRs); — application interpreted constructs (AICs); — application modules (AMs); — application domain models (ADMs); — Core model; — business object models (deprecated); — application protocols (APs); — implementation methods; — usage guides; — conformance testing methodology and framework; — abstract test suites (ATSs); — scheme for identification of schemas and other information objects defined in the ISO 10303 series.

  • Standard
    23 pages
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ISO
ISO/TS 23301:2023(Main)
STEP geometry visualization services

This document defines a set of metadata to support the audit trail of the transformation of a geometry definition, while it is distributed and shared in supply-chains, to ensure the traceability of geometric model data. It also defines a set of web services based on the utilisation of these metadata. The following are within the scope of this document: — metadata definitions for geometry transformation audit trail: — syntax for storing these metadata in geometry data sets in various formats; — conformance level for implementers and business processes; — definitions of web services to query the geometric model data set and its associated metadata. The following are outside the scope of this document: — service specifications for CAD operations; — specifications of a cybersecurity infrastructure to enable web services; — the technical implementation of a STEP geometry services client or server; — any geometric model definition; — any product and manufacturing information (PMI) definition; — archiving.

  • Technical specification
    30 pages
    English language
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ISO
ISO/TR 20123:2023(Main)
Automation systems and integration — Industrial data — Nuclear digital ecosystem specifications

This document provides: — a review and summary of the adoption of digital methods and technology in the national nuclear sectors; — a summary of the state of the art of some of the standards supporting the digital representation and interoperability of industrial data; — orientation on the use of these standards for model-based systems engineering (MBSE) in order to achieve a nuclear digital ecosystem (NDE); — a high-level roadmap of the stages by which this ecosystem can be achieved, taking into account the maturity of the actors of the ecosystem, their relationships and the added value of using advanced standards. NOTE The complete reports from the participating entities are presented in Annexes A to G. This document includes the following: — the systems composing the nuclear facilities and their input, output, and other products resulting from interactions in the nuclear system or with its environment; — the material accounting and the corresponding requirements; — waste management: all types of nuclear waste produced during processes and activities, and their properties are considered for a seamless management of information in the whole value chain of the nuclear ecosystem.

  • Technical report
    87 pages
    English language
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ISO
ISO/TR 3151-1:2023(Main)
Visualization elements of PLM-MES interface — Part 1: Overview

This document outlines the visualization elements for data exchange between the Product Lifecycle Management and Manufacturing Execution System (PLM-MES) or Manufacturing Operations Management (MOM). The following are within the scope of this document: — the need for a PLM-MES interface; — the technical elements that make up the PLM-MES interface; — the visualization elements of the PLM-MES interface. The following is outside the scope of this document: — application of the PLM-MES interface and its visualization elements.

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    29 pages
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