The present invention easily perform the selection processing of the motor apparatus multi-axis drive system comprising a plurality of driven mechanism. The present invention provides a device selection device for performing selection of the motor device, for each operation shaft, an operation screen for displaying to prompt the selection of one of the speed patterns from a plurality of speed pattern prepared in advance, each motion axis every, an operation screen for displaying to prompt the selection of one of the driven mechanism model from a plurality of driven mechanism model prepared in advance, for each operational axes, depending on the selection result of the driving mechanism model, is the selected one load pattern to which the one of the drive mechanism representing the variation of the load weight to bear when the driven mechanism is operated in conjunction with other driven mechanism, and the speed pattern according to the one driven mechanism a selection result, at least one list retrieves and displays names of the motor device adapted to, and displays an operation screen for displaying to prompt the selection from among the list, the.
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