I am installing a mach 3 usb controller into a wright cnc plasma table and I need instruction on wiring the thc (proma compact ) torch height controller to this board. IE will this board work to repla

Yes, you can connect a THC, Torch Height Controller, with the Mach3 USB controller. The THC uses the inputs to determine if the z axis needs to move up or down according to the arc of the plasma torch. The THC connects its outputs to the inputs of the controller so the controller will be informed of the states of the plasma torch.