Due to higher ecological awareness and more stringent environmental laws the necessity of lowering the energy consumption of manufacturing plants rises. Therefore the possibility to optimize a planned production hall becomes more and more important. The research project INFO, a project of the Vienna University of Technology in cooperation with industry partners and supported by the FFG, the Austrian Research Promotion Agency, creates an overall simulation of a cutting factory. Overall models of such proportions deal with a lot of difficulties, one of them is that through the interdisciplinarity of the problem there are many submodels that have to be coupled to get to the overall simulation. This work studies one possible solution for this problem, namely the coupling of different model parts in one simulator. First the two partial models are described and their simulation results validated against measurement data. Afterwards the models are coupled and possible problems are analysed and the approach is evaluated.