Hi XLR84x4
I have followed your suggestion and installed a switch instead of the optical setup you installed. The reason is that the cnc4pc is very expensive. They want $27,00 shipping charge for sending it to Germany; that means a total of approx $50,00.
I do get a zero reference. But every time the actuator passes the switch the machine stops regardless if I mark A++, A-- or Home, or any combination. Since your setup works, I must a wrong basic setup. The Mach3 software I use is the latest available. The A-Axis moves the knife up to 900 mm/sec, lifts the axis if the angle is >45 degrees, etc.
Can you help or do you need more info?
Best Regards Karl