Problem in few probing in one time.

I remaped M-program for probbing.
I use G38.4 for probe - Move up to lose contact with probe.
When I run probe first time, it works fine, but when I try secon time. I get error in qtPyVCP visual:

Probe is already clear when starting G38.4 or G38.5 mode

What does it mean? Possibly I need to reset some parameters as I understood.

To probe from motion.probe-in = true to motion.probe-in = false it is necessary that the state is true at the start of the probe move. The error message indicates that this is not the case.

I used G38.4 to probe that is mean:

G38.4 - probe away from workpiece, stop on loss of contact, signal error if failure

Current I use inductive sensor and manualy touch the tool. And move up from tool. So, condition

To probe from motion.probe-in = true to motion.probe-in = false it is necessary that the state is true at the start of the probe move.

is fulfield in some kind.

I tried to to disconnect sensor but when I start probing I must connect prob to tool.

Tool is Saw with 200mm diameter for stone cutting.
I use G10L20 code if probbing is succesfull, may be I need to use something else.

Maybe there is noise on the probe sensor input? You could try debouncing it slightly.

So, I found where problem is.

In code G38.4 I need to set current position for Z + [some shift], coordinate was in absolute coorinates.
So, now everything works fine.