Quote Originally Posted by cropwell View Post
I had a look at the Zapp website and the documentation there doesn't mention the estop pin. However I then loaded up the .xml file provided and ran Mach3 with it and it is set to port 1 pin 10 active low is a red cross.

So I have doubt that you are using the right input pin.

Rob
There isn't a special E-stop pin any Input will work but Mach needs to know where to look for it and I think he's telling mach to look in wrong place.