Confused about Z setup using Genmitsu 3020 Pro Ultra

[kevinfrteels]

I'm new to this, so my apologies in advance if I've missed something obvious...

I'm trying to understand the Z axis readings and how they truly relate to the location of the bit when using a a Z-Probe.

Right now I'm just trying to flatten a spoilboard for example.
My Z-Probe is 12mm tall and I entered that into the settings.
The process as I understand it is to set it up on top of the stock then run "Probe and zero Z".
It runs through the cycle, fast, then slow, sets the zero then raises back up a bit.
This is all fine.

What I don't understand is how the measurements relate to the cut.
For example, I just did this, UGS shows Z sitting at 6.085 mm at the top section of the window and -32.063 at the bottom. My cut for the spoilboard job will be .25mm.

The bit is physically measured to be about 18mm above the surface. (12mm z-probe + ~6mm showing in the window)

Since my cut will be .25 mm and it's showing at 6.085 above zero, doesn't that mean that it's going to start cutting just below where the top of the z-probe was?

Like I said, maybe I'm missing something. It seems to me that the whole point of the z-probe is to determine how far off the surface the bit actually is. So by putting 12mm into the z-probe setting for the height of the z-probe, it should add that to the amount that the bit raises after the test. But if that's the case, the number showing on the panel should be showing around 18mm.

[breiler]

After probing it should adjust the current work offsets so that tip of the tool will be at Z zero on top of the material you probed on.

I would expect that if you manually measure 18mm from the tool tip to the spoil board it should say that in the DRO as well after probing.

If the DRO shows 6.085 then I suspect you haven't entered the thickness of the probe puck into the settings:

[kevinfrteels]

ok. i think there may be a versioning issue because i'm on 2.1.23 and the UI looks much different.