An American National Standard. Instrumentation Systems, and Automation Society (ISA). Approved 6 June 2005. 104p. ISBN: 1-55617-955-
3. This Part 3 standard defines activity models of manufacturing operations management that enable enterprise system to control system integration. The activities defined in this Part 3 standard are consistent with the Part 1 object models definitions. The modeled activities operate between business planning and logistics functions, defined as the Part 1 Level 4 functions, and the process control functions, defined as the Part 1 Level 2 functions.