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While MES (manufacturing execution systems) are becoming increasingly more popular in the factory environment, the intrinsic hardware heterogeneity of equipment suppliers has always been a problem to their easy and cost-effective implementation. New distributed objects technologies now exist, both open and proprietary, operating system-dependent and independent, that can be used to solve this heterogeneity related problem. This work is intended to review the technologies of MES and new distributed objects, making a comparison of specifications, standards and commercial MES products based on each one. First, this work shows a general overview of MES and the potential of distributed objects applied to them: i.e. new concepts as intelligent sensors and other. Then, the two leading distributed object technologies will be reviewed: OPC/DCOM and CORBA. Finally, an industry survey focusing on commercial MES products and the distributed objects technology used by each one will be shown.
Blanco et al. (Mon,) studied this question.
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