Rotating 3D model based on hardware inputs

I have a 3d model (.step) of a obotic arm. I'd like to put accelerometers on the real arm and have a windows unity application that updates the 3d view. What would be the best way for Unity to get the position information from the usb sensors to the unity app? I currently have a C++ console application that prints x,y,z coordinates on the screen (it uses a dll to interface to the usb sensors). Could Unity access this existing console output or perhaps better/faster can Unity call the dll driver and get the data itself (similar to my c++ console app)?