Control is done by means of an RS-232C connection to the 'Computer RS-232' port on the AXC-8 System Controller. Serial port parameters should be set to 9600 baud rate, no parity, 8 data bits, 1 stop bit and no terminator. The AXC-8 must be equipped with firmware built to use the 'conventional' command protocol -- the 'enhanced' version will not work!