Sorted communication myself For Mr. Plc knowledge Volt : Way to restore RS232 communication with Ultra Drive ( magic jumper Power down drive, disconnect communications cable from driveAt DRIVE END ONLY, jumper pins 5 & 6 in D-shell, reconnect cable to driveWith UltraMaster open but all drive windows closed, set the following: 8 data bits, no parity, 1 stop bit, 19200 baud, correct communications portRe-power driveYou should now be able to get online and reset the communications setup. Once this is done, use the original cable or remove the link. Regards everyone. ILia