As a Computer Integrated Manufacturing system is a complex, expensive
and long-term investment, it is necessary to have a good reference mod
el as a first step to deal with its design and operation. A promising
way to assist in CIM design and implementation is the Concurrent Engin
eering (CE) approach. This paper introduces a reference model (based o
n the CIM-OSA Architectural Framework) that was developed from a funct
ional point of view. Details are given on how this model can be used f
or the concurrent design of products and Flexible Manufacturing System
s (FMS).