Use your Fluke to measure the voltage of one of the pins directly on the PP cable connector. Unplug it from the C11G, put one of the probes on one of the direction pins, say pin 3, and the other on any of 18-25 (ground). Now using the arrows of the corresponding axis, jog it alternately each direction. The direction pin should be changing its state and you should see the readings reflect it.
Tell me something, how do you plan to make the coolant flow from the right side of the tray to the left side where the drain appears to be? My F1 sits the same way in the middle of the tray and I don't know where to do the drain and how to make the coolant flow there.
Yep, Hood. Simple indeed ... Spindle which acts like a linear axis... afraid you lost me there.
Is the chuck on the left being called X and the stepper on the right being called A? Aren't they supposed to be rotating continuously, while the longitudinal axis feeds back and forth? How do you achieve the continuous rotation with a linear axis in Mach3?