I've finished getting everything setup and connected, but when I clear the emergency stop in Mach 3, I get this. Click Emergency stop and everything is happy again. I've triple checked all the wiring and everything appears to be fine, so I'm at a complete loss!
[ame=http://www.youtube.com/watch?v=oztNlO-G4q8]blinkingcnc.mov - YouTube[/ame]