Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

STEP Production Cell Technical Development Plan



James E. Fowler


This document describes a plan to construct a prototype STEP-based manufacturing cell to demonstrate how parts are produced in a STEP environment. The manufacturing cell is an integral part of an overall project to establish the National PDES Testbed at the National Institute of Standards and Technology (NIST). The Testbed was initiated in 1988 under the sponsorship of the U.S. Department of Defense Computer-aided Logistic Support (CALS) program. A major goal of the Testbed is to provide technical leadership in a national effort to implement a complete and useful specification for the exchange of product data. This specification must be designed to meet the needs of American industry and the CALS program.
NIST Interagency/Internal Report (NISTIR) - 4421
Report Number


STEP-based manufacturing, STEP, PDES Testbed, computer-aided logistic support, CALS


Fowler, J. (1990), STEP Production Cell Technical Development Plan, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed May 23, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created October 1, 1990, Updated November 10, 2018