A control device configured to control a component pickup and mounting operation of a component mounting machine; and multiple devices configured to execute the component pickup and mounting operation are provided. A device out of the multiple devices is attachably and detachably attached to the component mounting machine and includes a field programmable gate array that operates each function of the device by communicating with the control device. The field programmable gate array has a clock gating function of reducing an electric current flowing into the attachable and detachable device by stopping processing on a function that is not used, out of individual functions of the attachable and detachable device, when the attachable and detachable device is in a state capable of being removed by an operator.