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The DMC-41x3 motion controller has a USB port available for controller communications.  When connected to a PC USB port, the DMC-41x3 will be accessible on a virtual COM port, analogous to RS232. Connecting does require the installation of the FTDI usb driver if it is not already installed on your system.

The USB drivers for this controller are typically bundled as part of standard Windows/Linux/MacOS installations, so no additional driver loading should be required.  However, if it is found that a particular system does not have these drivers loaded, they may be loaded manually.  The drivers may be retrieved at the virtual COM port manufacturer's website below.  These should be loaded onto the system for proper communication.

FTDI USB Drivers at