Z probe questions

Sorry hijacking the other hread.

I have MPCNC with recent up grade to the new Jackpot board, using Rambo 1.4 previously.
Have dual end stops running fine. I want to be able to probe Z like I did with the Rambo and LCD.

I found the code to add at the start of the program and for tool change on the milling basics page. However, I have divided up my different tools into separate files. I would finish, then change tools and probe Z to reset to 0. I know now that using the Z home button on the WEBUI controls causes the the Z to rise.
I am not gifted with the programing side of things. It really is a foriegn language to me.
If I was going to program a macro button for Z probe, I understand I have to write a file with that command, but I do not understand how to upload or save it. Also, I looked at the Fluid NC settings to set the Z probe thickness, but none of the settings are obvious to me which one.
One of the settiung is /axes/z/homing/positive_direction and it is set to true, will changing it to false cause the Z to lower when using the Z home button?
Please pardon my ignorace. I do apprecaite all of you who understand this and are willing to help the rest of us.

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There is a probe tab but is not enabled by default.

Hi go to the option menu and just enable the probe section.

Im using webuiV2 (look for the highlighted button

and sorry, cant move much more into the menus xD im currently using it

I enabled the probe tab. Conducted a test, worked fine except it did not retract, got to the touch plate and stopped. I set the retract at 5.0 mm. I also got a green check mark that the probe touched.
How do I address not retracting after touching? And shouldn’t it reset the Z height to probe thickness and any retract height? It did not.

I believe its a firmware issue 3.9.1 had this ( im still in the old 3.7.4 i think :thinking: :sweat_smile:, my machines are slaves and have to do forced working 10hs a day).

What version are you using?

V3.9.1

Z probe thickness is the P parameter within G38.2

It should look like this
G38.2 Z-20 F100 P0.5 (G38.2 probe and error if no contact-Z probe down Z 20mm- F feedrate 100 mm/min- P probe thickness 0.5mm)

But I would like to add that I too had a problem with the fluid dial probing menu adding 1-2 mm in the positive direction for Z0. I still haven’t dug into it in the code, but by running a probe.gcode macro I wrote, and an able to control the commands used, I haven’t had that problem anymore.
probe.gcode (282 Bytes)

On the subject of Z homing, the only way I’m aware of that you can home Z is if you have a limit switch installed. So “homing in positive direction” is moot because if you don’t have a Z limit switch, you can’t home Z. Zeroing Z is more common it seems.

If someone can correct me, thats the version with the probe code issues

thank you, I was able to save the file and make a new macro for it, seemed to work.

And I probably use Homing and probing interchangeably but shouldnt.

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