Centroid Community CNC Support Forum

If the report at the top of the thread is after setting up for the 4th axis (A), then you didn't do these from Keith's post, in the wizard...

- define the input that you have the rotary switch wired to as 4th axis Home Ok

- go to the homing menu , select Automatic Homing, double check the homing direction and order


There's no input set for 4th axis HomeOk.
Also confirm that the prox is working in the diagnostics screen (Alt-i).

thanks scott,

and i'll add
then you can set 4th WCS zero position with the cnc12 setup menu.

or with a macro and vcp button if you like.

cnckeith wrote: ↑Wed Mar 13, 2024 2:40 pm thanks scott,

and i'll add
then you can set 4th WCS zero position with the cnc12 setup menu.

or with a macro and vcp button if you like.

set 4tth zero.png

My guess is that VCP button is custom, right?
How can I can set 4th WCS zero position with the cnc12 setup menu?
You can see that on the picture and on the side of the chuck there is a screw, that should be the Zero.

F1 setup, F1 part, F1 next axis until you land on the rotary axis.

jog tool to known diameter, type in radius position, press F10 to set

yes, it is custom button , very easy to add.

it will also become a standard included centroid macro and vcp button in cnc12 router with cnc12 v5.1 , but you can also install it on your system as well.

Hello,
A few things:
- I did follow Keith's instructions
- I also followed the Scott's and did the F1F1F1 procedure
When I pressed the M91/A command the A axis keeps rotating. The M92/A it does stop...
I noticed that the light of the A axis is always red unless I stop it right where the screw is (which should be home or zero).
Sorry if I sound lost but I am a bit. Not sure why the A axis is not homing... Something I did wrong in the input screen?

what do you mean by not homing? not moving? not finding the switch? not changing from dashed lines to numbers in the dro?

cnckeith wrote: ↑Wed Mar 13, 2024 7:38 pm what do you mean by not homing? not moving? not finding the switch? not changing from dashed lines to numbers in the dro?

I am not sure if I am correct Keith but when I home the CNC when I start it up the A axis does not move like all the other axis do.

Your cncm.hom file has only an M26 for the A axis. It has no M92 to move it to its switch.

You have correctly indicated that INP6 is a fourth axis home switch, and it shows up in your Machine Configuration -> Motor Parameters table as such.

You have correctly indicated that you want to home your A axis in the positive direction.

However, you have selected "I will create my own home program ...". This prevents the Wizard from changing your cncm.hom file to match your selections. You either need to select "Wizard to generate automatic home program ...", or you need to edit the M92/A code into cncm.hom yourself.

How much gap is there between the proxy and the bolt? You might need to close the gap a bit more. Also, try a flatter hex head bolt with a bit of a radius groeund on it. It might sense better.

Your cncm.hom file doesn't have the home command for the 4th yet. Once you set the direction for the 4th, set "wizard to create" and then write the settings.

You can check the proxy by watching the input in the diagnostic screen while spinning the axis with the arrow keys.

Cross posted with cncsnw.