Strange error

Hi everyone.
I’ve suddenly got a strange error.
and I just can’t figure it out.
I’ve run a few projects without any problems and haven’t changed anything.

The error occurs the moment the bit touches the probe.
I’ve checked that my probe is working correctly.

I am attaching my starting g-code:

(Project )
(Created with Estlcam )
(Machining time about hours)

(Required tools:)

G21 ; set to MM
G90 ; set to Absolute positioning
$HX
$HY
M0 (MSG Remove stopblocks.)
$HZ
G1 F4000 X40
G1 F4000 Y40
M0 (MSG Attach probe)
G38.2 Z-110 F200 P1.0 (move to probe)
G91 Z5 F300
M0 (MSG Remove probe)
G91 Z5 F300
M0 (MSG Turn on router and dust collector)
G90 (MSG Set to absolute positioning)

Is it because it’s Saturday and the CNC just doesn’t feel like doing anything today?

Run the commands one at a time in the terminal. It seems like it is in an alarm state before that line. But I don’t see why. Maybe the terminal will have a clue.

I have tried running each line separately. The error comes as soon as the probe touches.


Is it showing as already triggered before you start?

No i dont think so…
I have tryed rebooting everything. Nothing changed.

It seams to work as intendet


It’s weird that it cares about the G91. Did you try sending them one at a time (don’t paste all of them at once)? Did you get an alarm before you sent the G91?

It looks like it is saying it is triggered before it touches the probe, or maybe that it isn’t clearing the probe after backing off.

I don’t use a Jackpot, but when I check the FluidNC reference, G38.4 and G38.5 are triggered when you lose contact where G38.2 and G38.3 are triggered when contact is detected. The error message implies your system is detecting a triggered state at the start of your probing.

One problem we’ve seen a couple of times on Marlin builds is that the router bit is grounded and the signal line is connected to the alligator clip. You can check to see if this is the issue by probing using just the plate and the clip (no connection to the bit). If this turns out to be the issue, the solution is to reverse the probe connection at on the control board so that the alligator clip is connected to the ground connection of the probe.

And there are other sources of shorts.

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