Does anybody use the Mazak M32 controller in "drip feed" mode? There is not much memory in the controller and we are using a cam system to produce G-code. I can successfully send "small" files into the memory of the controller to run them using the Tape I/O softkey. If I use the DNC option, it error's out with "DNC option not installed". Is there an optional board that has to be purchased from Mazak?