The structure feature of DXF (Drawing Exchange Format) graphic file is analyzed in this study. According to its feature, information of lines and circles and arcs can be extracted through computer programming. The data is used for the interpolation to generate processing data and then, all processed data is sent to the microcontroller through the communication port once. The microcontroller receives data and stores them in the memory. When it works, the microcontroller reads the data from the memory and controls the driver to drive a stepper motor. The study introduces the motion control system.
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