The first Technical Note in this series [1] introduced the international standard ISO 10303, informally known as STEP (STandard for the Exchange of Product model data). Subsequent Technical Notes discussed various issues faced by users of STEP and how the ISO TC184/SC4 committee is addressing these issues. This paper presents the current move to modularize the STEP application protocol architecture. This paper describes the initial STEP architecture, requirements for improvements to the architecture, features of the new modular architecture, status and issues.

Issue Section:
Technical Note
Keywords:
production engineering computing, standards, manufacturing industries, data communication, protocols
Topics:
Accelerator mass spectrometry, Engineering standards, Teams, Manufacturing industry, Production engineering computing
1.
Pratt, M.J., 2001, “Introduction to ISO 10303—the STEP Standard for Product Data Exchange,” ASME J. Comput. Inf. Sci. Eng. 1, (1), pp.102-103.
2.
SC4 On-Line Web Page: http://www.tc184-sc4.org.
3.
ISO TC 184/SC4 Web Page: http://www.iso.ch/.
4.
ISO 10303-1:1994, Product data representation and exchange –Part 1: Overview and Fundamental Principles.
5.
Kemmerer, S. (ed.), 1999; STEP the Grand Experience, NIST Special Publication 939, US Government Printing Office, Washington, DC 20402.
6.
ISO 10303-11:1994, Product Data Representation and Exchange—Part 11: Description Methods: The EXPRESS Language Reference Manual.
7.
ISO 10303-203:1994, Product Data Representation and Exchange–Part 203: Application Protocol: Configuration Controlled Design.
8.
Price, D. M., “WG10 STEP Modularization Requirements Specification,” ISO TC 184/SC4 WG10 N227, 1998-12-14. Available on-line at http://www.nist.gov/sc4/wg_qc/wg10/current/n227/wg10n227.htm.
9.
Dunford, J. “Categorisation of Application Modules,” ISO TC 184/SC4 WG12 N1031, 2002-03-25. Available on-line at http://www.tc184-sc4.org/SC4_Open/SC4_and_Working_Groups/WG12/N-DOCS.
10.
ISO/DIS 10303-14:2002, Product Data Representation and Exchange—Part 14: Description methods: The EXPRESS-X Language Reference Manual.
11.
“Guidelines for the Content of Application Protocols Using Application Modules,” ISO TC 184/SC4 N1113, 2001-05-02. Available on-line at http://www.nist.gov/sc4/howto/methods/modules/ap_content/.
12.
“Guidelines for the Content of Application Modules,” ISO TC 184/SC4 N1161, 2001-05-02. Available on-line at http://www.nist.gov/sc4/howto/methods/modules/am_content/.
13.
Barnard Feeney, A. “Application Module Development Points in the Application Protocol Development Process,” ISO TC184/SC4 WG12 N1312, 2002-07-02. Available on-line at http://www.tc184-sc4.org/SC4_Open/SC4_and_Working_Groups/WG12/N-DOCS.
14.
World Wide Web Consortium. Extensible Markup Language (XML) 1.0 (Second Edition). W3C Recommendation. 2000-10-06. Available on-line at http://www.w3.org/TR/REC-xml.
15.
Cederqvist, P. et al. “Version Management with CVS.” Available on-line at http://www.cvshome.org/docs/manual/.
16.
STEP Module Respository Web Page: http://stepmod.sourceforge.net.
Copyright © 2002
 by ASME
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