Hello, all. I have been using mach for about 3 years now, driving a 3 axis servo system (homebuilt).
I understand that there are inputs for a DRO within mach. Are these plugged in using the parallel port, or can I use another input?

I currently use my parallel port to control my Gecko Drives, and I would like to send the encoder signals from my servos to both the Drive and back to the computer, for diagnostic stuff I want to do.