I have an old 1983 Fadal VMC-40 with the keyboard mounted to the right of the screen (CNC 88). I am able to send programs to it with the RS232 but I haven't been able to run it in DNC. I have messed with all of the Baud Rates but nothing works. When I use the baud rate of 2400 it looks like the DNC is about to work but when I hit the start button I get the "RS232 Error". Any ideas??