ISO 10303-201-1994 PDF

Full title and description

Industrial automation systems and integration — Product data representation and exchange — Part 201: Application protocol: Explicit draughting. This part of ISO 10303 (commonly known as STEP AP201) defines the integrated resources and information requirements for exchange of computer‑interpretable technical drawings and explicit draughting data between systems.

Abstract

Specifies the use of the integrated resources necessary for the domain of explicit draughting: representation of exchangeable drawings (including mechanical, architectural and construction drawings), representation of true‑scale product geometry where required (for calculations and NC toolpath generation), representation of drawing revisions, 2‑D shape models used to generate views, and two‑dimensional annotations and presentation of product definition data on drawings. The standard is intended for inter‑organizational exchange of computer‑interpretable drawing information and product definition data.

General information

• Status: Withdrawn.
• Publication date: December 1994 (published 22 December 1994 in vendor records; ISO catalogue lists 1994-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Industrial process measurement and control / industrial data).
• Edition / version: Edition 1 (1994).
• Number of pages: 476 pages.

Scope

AP201 defines the information models and use of integrated generic and application resources required to represent explicit draughting data for exchange purposes. It covers representation of exchangeable drawings, true‑scale geometry to support calculations and NC path generation, revision and view generation metadata, 2D shape models and annotation/presentation conventions for product definition shown on drawings. The aim is to enable computer‑interpretable interchange of technical drawings and related product definition data between CAD, CAM and PLM systems.

Key topics and requirements

• Data models for explicit draughting (2D drawing representation and 2D shape models).
• Representation of drawing revisions and revision history.
• True‑scale geometric representation to support measurements, surface/area computations and NC toolpath generation.
• Annotation and presentation of product definition information on drawings.
• Use of integrated generic resources (e.g., geometry, topology, presentation and identification resources) defined in the ISO 10303 family.
• Interoperability rules for exchanging computer‑interpretable drawing information between organizations and systems.

Typical use and users

Typical users include CAD/CAM vendors, PLM integrators, manufacturing engineers, drafting and technical documentation teams, aerospace and automotive engineering departments, and organisations needing to exchange or archive computer‑interpretable drawings. Use cases include cross‑system drawing exchange, archival of 2D product definition, NC toolpath derivation from true‑scale drawing geometry, and migration between CAD systems.

Related standards

Part of the ISO 10303 (STEP) series. Closely related and complementary parts include ISO 10303‑101 (integrated application resources: draughting), ISO 10303‑21 (clear text encoding of the exchange structure), ISO 10303‑11 (EXPRESS language), ISO 10303‑46 (presentation resources) and later application protocols such as AP203, AP214 and AP242. AP201 has been superseded in STEP evolution by more recent APs (see lifecycle notes below).

Keywords

ISO 10303, STEP, AP201, Explicit draughting, drafting, CAD exchange, drawing exchange, 2D shape model, EXPRESS, product data representation, technical drawings.

FAQ

Q: What is this standard?

A: ISO 10303‑201:1994 (AP201) is the STEP application protocol for explicit draughting — a data model and resource usage specification for exchanging computer‑interpretable technical drawings and related product definition data.

Q: What does it cover?

A: It covers representation of exchangeable technical drawings, true‑scale geometry where required (for measurement and NC generation), drawing revisions, 2D shape models used to produce views, and two‑dimensional annotations/presentation of product definition on drawings.

Q: Who typically uses it?

A: CAD and CAM software vendors, PLM and PDM integrators, manufacturing and drafting engineers, and organisations exchanging or archiving 2D product definition and drawings. Use is common where interoperable, computer‑interpretable drawings are required across systems.

Q: Is it current or superseded?

A: ISO 10303‑201:1994 is withdrawn. Its content has been superseded in the evolution of STEP application protocols (AP242 and other later APs reflect consolidated and modernized approaches for model‑based data exchange). Check the ISO catalogue for the current AP that best matches your use case.

Q: Is it part of a series?

A: Yes — it is one part of the ISO 10303 (STEP) family of standards. The family includes many parts (resources, modules and application protocols) that together define product data representation and exchange mechanisms across industries.

Q: What are the key keywords?

A: STEP, AP201, explicit draughting, drafting, CAD exchange, product data representation, EXPRESS, 2D drawings, technical drawings, interoperability.