[Problem to be Solved] A production system to facilitate the commonization of front chambers among a plurality of production devices that are different in the kind of a process to be performed for a processing substrate. According to the production system of the present invention, it is possible to reduce the development cost and production cost of the production devices. [Solution] Control units are provided separately in a processing chamber and a front chamber of a small production device. When the processing-chamber control unit outputs a load request signal, the front-chamber control unit loads a processing substrate to the processing chamber, and outputs a load acknowledgment signal. When the load acknowledgment signal is input, the processing-chamber control unit performs a process for the processing substrate, and outputs an unload request signal after the completion of the process. When the unload request signal is input, the front-chamber control unit starts the unloading of the processing substrate, and outputs an unload acknowledgment signal when the processing substrate is unloaded from the processing chamber. When the unload acknowledgment signal is input, the processing chamber starts the preparation of the next process.
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