I have a external start cycle button hooked up to one machine. I'm using Mach3 and the switch is connected to pin 15 of the parallel port, I use OEM trig #1 hotkey 1000. It works great. Now I want to move it to another machine but with a Mach3 USB Motion Card STB4100. It has 4 inputs and 4 outputs. I can't figure out how to assign the switch to one of the inputs.
