Minimum probe distance

[johu]

Using:
UCCNC version: 1.2114
UC300ETH_5LPT firmware: 1.0370, Hardware revision: 1.0000

I'm trying to probe "Circle inner" a 3mm hole with a 2mm diameter wireless touch probe.
But UCCNC repeatedly reports: "Probe did not touch!"

Before I press the "Start Probing" button, the led's are off:

Probe LEDs.png (16.05 KiB) Viewed 2569 times

Then I press the "Start Probing" button, I see the Axis 2 (Y) moving, and the orange led goes on:

Probing.png (12.47 KiB) Viewed 2569 times

Then I see the LED on my physical probe activated synchronously with the UCCNC LEDs:

Probe Active.png (12.54 KiB) Viewed 2569 times

And then a confirmation of Probed OK":

Probed OK.png (15.74 KiB) Viewed 2569 times

I see that UCCNC registered some values because the "Axis 2" values are filled...
But at the same time the message "Probe did not touch!" appears.
The "Axis 1" motion never starts.

Changing the "Fine distance" from 10 to 0.1mm and the Retract from 1 to 0.5mm didn't result in a succesful probe.

I've also noticed the same behaviour when "Pocket" probing in the Y direction.

So:
1)
Hope you can explain why this happens.
Maybe because of a minimum probe distance... if so... there should be a message explaining that.
If there isn't, then I think this is a bug.

2)
I also noticed that directly after a failed probe a press on "Start probing" doesn't do anything, I think this is also a bug.
Maybe the internal state management of the probing algorithm needs to be reviewed?

3)
Is there a debug/write-to-log-file option available?

[dezsoe]

It's very strange. Here is how to log the probing plugin. Please, try a Y pocket and the circle then upload the log for me. Thanks!

[johu]

Hi dezsoe,

here are the debug logs. Hope I can contribute to finding the cause of this strange issue.

I also noticed something else:
When on position X80 Y580 Z100 and entering on the MDI: G31 X100 F10 <enter>
Sometimes the X-axis moves and but sometimes not...

On the UCR201 I can see that the MPG mode is changing from "Velocity Speed: 10%" to "Off" when the probing starts, and it also switches back.
But sometimes this does not happen, the UCR201 stays on "Velocity Speed: 10%" and the axis doesn't move.


1. Starting at X80; on the MDI: G31 X100 F10 <enter>; X-axis moves; I trigger the probe by touching it with my hand around X81, axis stops.
2. At position X81.075; I use the arrow down on the MDI and select the last command G31 X100 F10 <enter>; the axis quickly moves to X80; !!! This is unexpected.
3. Again on the MDI I pick the last entry: G31 X100 F10 <enter>; nothings happens
4. Again on the MDI I pick the last entry: G31 X100 F10 <enter>; Now it moves again.

While repeating the MDI last command it seems to cycle through steps 1-2-3.

[johu]

Any updates on this issue?