Help Please With Auto Tool Height Mach 3 Problem

[JAZZCNC]

Best to start at the source and it's Possibly a lose connection on the breakout board anyway. Trace the wire back into the control box and see if you can identify the input it's using on the breakout board.
Then to test the breakout board hasn't fried it's input take a short wire and place between the (+) input and Gnd(-) watching the digitise input in mach to see if toggles on/off.

If it does then you know it's either the wire or puck. If not then you probably have a blown Input on the Breakout board.

[howser37]

Thanks JAZZ, i will take a look at that tomorrow, it sounds plausible to me as it was working intermittently before it stopped working alltogether.

[howser37]

I have checked everything i can think of connection wise, it all checks out ok from the touch plate through the control box and to the computer.

Is there some way of telling on the diagnostic screen of mach 3 if a signal is being received when the puck is pressed.

Mach 3 senses the puck being plugged in and sets the input to pin 15 port 1 in the auto settings but detects nothing from the puck being pressed.

None of the input status leds change when the puck is pressed

[Clive S]

Have you tried what Dean suggested here

:- Then to test the breakout board hasn't fried it's input take a short wire and place between the (+) input and Gnd(-) watching the digitise input in mach to see if toggles on/off.

You can always set up a different input pin on the BOB and then of course in Mach ..Clive

[howser37]

I am a bit clueless regards checking the input guys.
This is the inside of my control box.

The signal i assume comes in on the ribbon cable via the ST port on the right of the picture and terminates next to the parallel port.

Can anyone talk me through testing it so as i don't fry myself and the control box

[JAZZCNC]

This will 99.9% be because you have the wrong Input number in Mach3. You can't trust Mach3 auto detect.

Try changing the Probe input to any of these. 10, 11, 12, 13 or 15. Getting it wrong shouldn't hurt anything, if the input is shared by another switch ie: limit or E-stop all that will happen is when you short the probe the limit will trip.
If you go to Diagnostics tab in mach3 on the right you'll see a bank of Led lights. When you touch the probe the Digitize Led should light up. If it's on already without touching then go back into inputs and change the active Low state.

If any of these input numbers don't work then you either have some wiring issue or the board input is not working. If you have limit switches then you could swap the probe with this input to check your wiring, you'll need to set the probe input to same input number as limit.



Do you have a manual or give more info about the model of machine.