ISO 10303-2-2024 PDF

Full title and description

Industrial automation systems and integration — Product data representation and exchange — Part 2: Vocabulary. This part of ISO 10303 (STEP) defines the standardized vocabulary and term set used across the ISO 10303 series to ensure consistent interpretation of product data representation and exchange concepts.

Abstract

ISO 10303-2:2024 establishes the controlled vocabulary, definitions and term relationships used throughout the STEP family of standards (ISO 10303). It provides authoritative definitions for concepts, objects and relationships used in product data representation and exchange, supporting consistent use of terminology by standards authors, implementers and users of STEP-based data models and application protocols.

General information

• Status: Published.
• Publication date: 6 February 2024 (recorded publication date; some listings show 5 February 2024).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 01.040.25 (Manufacturing engineering — Vocabularies); 25.040.40 (Industrial process measurement and control).
• Edition / version: First edition — 2024.
• Number of pages: 1,110 pages (English edition).

Scope

Specifies the vocabulary (terms, definitions and relationships) used by the ISO 10303 series to describe product data representation and exchange. It covers definitions for concepts used in EXPRESS schemas, application protocols (APs), implementation methods and related resources, with the goal of providing a single authoritative term set to reduce ambiguity across STEP parts and implementations.

Key topics and requirements

• Authoritative, standardized definitions for STEP terminology (terms used by APs, resources and implementation methods).
• Structured organization of terms and relationships to support consistent referencing from other ISO 10303 parts (APs and resources).
• Alignment with EXPRESS modeling concepts (used across ISO 10303-11 and AP schemas).
• Provision of vocabulary to support implementers, documentation and conformance testing of STEP-based exchanges.
• Guidance for usage of terms in technical content, ensuring interoperability across CAD/PLM/engineering toolchains.

Typical use and users

Used by standards authors, technical editors, CAD/PLM vendors, systems integrators, implementers of STEP application protocols, and organizations performing conformance testing or writing documentation for STEP-based data exchange. It is a reference for anyone who needs consistent, authoritative terminology when developing or implementing ISO 10303 schemas, APs or related tooling.

Related standards

ISO 10303-2 is part of the ISO 10303 (STEP) multi-part standard. Closely related parts include ISO 10303-1 (Overview and fundamental principles), ISO 10303-11 (EXPRESS language — description methods) and implementation/encoding parts such as ISO 10303-21 (Clear text encoding of the exchange structure). It is also used alongside STEP Application Protocols (for example AP 203, AP 214 and AP 242) that define domain-specific exchange schemas.

Keywords

STEP, ISO 10303, vocabulary, terminology, product data representation, data exchange, EXPRESS, application protocol, AP, CAD, PLM, interoperability.

FAQ

Q: What is this standard?

A: ISO 10303-2:2024 is the vocabulary part of the ISO 10303 (STEP) family; it provides the standardized terms and definitions used across the STEP series to ensure consistent interpretation of product data exchange concepts.

Q: What does it cover?

A: It covers definitions of terms, relationships between terms and guidance for their use across EXPRESS schemas, application protocols and implementation methods within the ISO 10303 series.

Q: Who typically uses it?

A: Standards authors, CAD/PLM vendors, implementers of STEP APs, systems integrators, technical editors and organizations doing conformance testing or writing documentation that references STEP terminology.

Q: Is it current or superseded?

A: ISO 10303-2:2024 is the current, published first edition (2024) of Part 2 as of its publication in February 2024. Users should check national or ISO catalogues for any subsequent amendments or revisions.

Q: Is it part of a series?

A: Yes — it is Part 2 of the ISO 10303 series (commonly called STEP). The series includes parts for overview (Part 1), description methods (Part 11, EXPRESS), encoding (Part 21) and many application protocols (APs) such as AP 203, AP 214 and AP 242.

Q: What are the key keywords?

A: Vocabulary, terminology, STEP, product data, EXPRESS, application protocol, interoperability, data exchange, ISO 10303.