ISO 10303-52-2011 cor1-2014 PDF

Full title and description

ISO 10303-52:2011/Cor 1:2014 — Industrial automation systems and integration — Product data representation and exchange — Part 52: Integrated generic resource: Mesh-based topology — Technical Corrigendum 1. This document is a technical corrigendum to ISO 10303-52:2011 that issues corrections and clarifications to the mesh-based topology integrated generic resource used in STEP (ISO 10303) data models.

Abstract

This corrigendum corrects technical, definitional and schema issues in ISO 10303-52:2011 related to mesh-based topology representations (vertex/cell definitions, EXPRESS entity definitions, functions and identifiers). Its purpose is to remove ambiguities and incorrect element definitions so implementations of the mesh topology resource interoperate consistently in STEP-based product-data exchange.

General information

• Status: Published.
• Publication date: July 2014 (Edition 1, Technical Corrigendum 1, 2014-07).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 25.040.40 (Industrial process measurement and control).
• Edition / version: Edition 1 — Corrigendum to ISO 10303-52:2011 (identified as ISO 10303-52:2011/Cor 1:2014).
• Number of pages: 1.

Scope

This corrigendum applies only to ISO 10303-52:2011 (the integrated generic resource for mesh‑based topology) and provides technical corrections and clarifications to its EXPRESS schemas, entity definitions and function specifications. It addresses errors that could lead to inconsistent representation of mesh connectivity, unsupported polygonal cell shapes, and ambiguous attribute or function semantics in the original 2011 publication.

Key topics and requirements

• Corrections to EXPRESS entity definitions for mesh constructs (e.g., unstructured/array-based mesh entities) to remove ambiguities.
• Clarification or removal of unsupported polygon cell shapes to constrain cell types (triangles, quadrilaterals, etc.).
• Refinements to mesh connectivity, cell counting and related functions to ensure unambiguous behaviour (for example, clarifying cell_counts and related function semantics).
• Amendments to document and schema identifiers to ensure unique and interoperable object identification within STEP frameworks.
• Editorial and technical corrections that do not change the high-level purpose of Part 52 but are required for correct implementation.

Typical use and users

Primary users are standards implementers and developers of STEP-enabled CAD/CAM/PDM software, data-exchange integrators, and organizations validating mesh-topology data models for product-data interoperability. The corrigendum is intended for implementers of ISO 10303 schemas who need authoritative corrections to ensure consistent mesh-based topology exchange. It is also relevant to engineers and data managers working with STEP-based interchange of mesh and topology data.

Related standards

This corrigendum belongs to the ISO 10303 (STEP) family. It directly corrects ISO 10303-52:2011 (Part 52) and is related to other Integrated Resources (Parts 41–62) and relevant Application Protocols that use mesh or topology representations. Implementers should consider the core STEP parts (for example, Part 1 overview, Part 11 EXPRESS, and the relevant APs) when applying these corrections.

Keywords

ISO 10303, STEP, Part 52, mesh-based topology, corrigendum, EXPRESS schema, mesh connectivity, mesh cells, technical corrigendum, product data exchange.

FAQ

Q: What is this standard?

A: ISO 10303-52:2011/Cor 1:2014 is a Technical Corrigendum to ISO 10303-52:2011 that issues corrections and clarifications for the mesh-based topology integrated generic resource used in the STEP family (ISO 10303).

Q: What does it cover?

A: It covers technical corrections to EXPRESS entity definitions, function semantics and schema identifiers for mesh-based topology so that mesh representations (vertices, cells, connectivity) are unambiguous and interoperable across STEP implementations.

Q: Who typically uses it?

A: Implementers of STEP (ISO 10303) schemas, CAD/CAM/PDM software developers, data integrators exchanging mesh/topology data, and engineers responsible for data interoperability and archival.

Q: Is it current or superseded?

A: This document is a corrigendum published in 2014 to the 2011 Part 52 standard. It does not supersede Part 52; rather it amends the 2011 edition with technical corrections. Users should apply the corrigendum together with ISO 10303-52:2011. Check ISO publications for any later amendments or revisions beyond 2014 if up‑to‑date confirmation is required.

Q: Is it part of a series?

A: Yes — it is part of the ISO 10303 (STEP) series (Automation systems and integration — Product data representation and exchange). Part 52 is one of the Integrated Generic Resources (Parts 41–62) in that family.

Q: What are the key keywords?

A: Mesh-based topology, STEP, EXPRESS, corrigendum, ISO 10303-52, mesh connectivity, cell definitions, product data exchange.