7MESA International. Controls Definition & MES to Controls Data Flow Possibilities[S]. MESA International White Paper Number 2,2000.
8Chen F T, Shen E, Deng J Y. et al. Development of a distributed object-oriented system framework for compuler integrated manu- facturing execution system [C]. Proceedings of IEEE intemational conference on robotics & automation , Leuven, Belgium,1998: 2116-2121.