Tool length sensor and touch probe with Mesa7i76e

Double check your work offset. It sounds like you have a positive value. Possibly in the g92

I will test today once I reach my shop.
Just as a confirmation, the workpiece coordinates are stored in g54, and for Z I should have a value smaller than the Z of my tool. I'm I right?
I'm quite beginner so this is quite new to me.

G54 could be zero if you touch off the part.

If you touch off guage length g54 would have a value.

That warning sounds like it wants to travel past the software limit "switch".

Without knowing your specific setup if you tuch off with a sensor you may want to write the joint position and not absolute or relative

I am in the process of setting up the machine. I have a touch probe that I used to take the g54 coordinates, by probing the vice's fixed jaw.
I also have a tool length sensor, that I can read it in linuxcnc as a pin input, but never ended up using it yet.
I have set the coordinates for TOOL_CHANGE, the machine moves to those coordinates and then I get this: "Linear move on line -1 would exceed axis Z positive limit".
I have checked the G54 coordinates and the Z is -132, and for the tool I want to change I have set the Z to -110.
I don't understand why the line is, if I would have a line number that actually exists, it would be a bit easier to debug..
Please advice!

Do you have a high clearance height in the program, possibly a typo?

Also check the g92 z offset
Edit, zoom out on the plot, what does it look like? I

It appears Linux CNC can read ahead because I tried a sample program in the Sim and it stops after a few lines and says a move on line 368 would exceed limit.

Are you using an mdi command?

For now I would set g54 to zero and touch the tool off a gauge block the height of the face of the top of the part.

This is what I have for G92 in the offsets tab

And this is the macro that gets executed when I try to change a tool:

%
; manual toolchange with automatic tool length probe

o<manual_change> sub
;(debug, in change tool_in_spindle=#<tool_in_spindle> current_pocket=#<current_pocket>)
;(debug, selected_tool=#<selected_tool> selected_pocket=#<selected_pocket>)

;otherwise after the M6 this information is gone!
#<tool> = #<selected_tool>
#<pocket> = #<selected_pocket>

;(debug, tool is = #<tool>)
;(debug, pocket is = #<pocket>)

; we must execute this only in the milltask interpreter
; or preview will break, so test for '#<_task>' which is 1 for
; the milltask interpreter and 0 in the UI's
O100 if [#<_task> EQ 0]
(debug, Task ist Null)
O100 return [999]
O100 endif

;first go up
G53 G0 Z[#<_ini[AXIS_2]MAX_LIMIT>]
; then move to change position
G53 G0 X[#<_ini[CHANGE_POSITION]X>] Y[#<_ini[CHANGE_POSITION]Y>]
G53 G0 Z[#<_ini[CHANGE_POSITION]Z>]

; cancel tool offset
G49
; using the code being remapped here means 'use builtin behaviour'
M6

(debug, after m6)

O200 if [#<_hal[probe.use_toolmeasurement]> EQ 0]
O200 return [3] ; indicate no tool measurement
O200 endif

G53 G0 X[#<_ini[TOOLSENSOR]X>] Y[#<_ini[TOOLSENSOR]Y>]
G53 G0 Z[#<_ini[TOOLSENSOR]Z>]

O300 if [#<_hal[probe.ps_searchvel]> LE 0]
O300 return [-1] ; indicate searchvel <= 0
O300 endif

O400 if [#<_hal[probe.ps_probevel]> LE 0]
O400 return [-2] ; indicate probevel <= 0
O400 endif

F #<_hal[probe.ps_searchvel]>
G91
G38.2 Z #<_ini[TOOLSENSOR]MAXPROBE>
G0 Z0.26
; This is commented out only for sim.
F #<_hal[probe.ps_probevel]>
G38.2 Z-0.5

O500 if [#5070 EQ 0]
G90
O500 return [-3] ; indicate probe contact failure to epilog
O500 endif

G90
G53 G0 Z[#<_ini[CHANGE_POSITION]Z>]
G53 G0 X[#<_ini[CHANGE_POSITION]X>] Y[#<_ini[CHANGE_POSITION]Y>]

#<touch_result> = #5063
#<probeheight> = #<_hal[probe.probeheight]>
#<blockheight> = #<_hal[probe.blockheight]>

;(DEBUG, #<touch_result> #<probeheight> #<blockheight>)

G10 L1 P#<tool> Z[#<touch_result> - #<_hal[probe.probeheight]> + #<_hal[probe.blockheight]>]
G43

;G10 L1 P#<tool> Z#<touch_result>
;G10 L2 P0 Z[#<workpieceheight> + #<probeheight> + #<touch_result>]

; signal success be returning a value > 0:
o<manual_change> endsub [1]
m2
%

If you are using gmoccapy:
Have you read ( and understood [ I myself did not for the first reading ]) the documentation in gmoccapy. I had to file with block hight / tool measurement hight and do things in positive numbers, also my z moves only from 5 to - 130..
Mike

I'm thinking your tool offset value is tool high.

It should probably be the difference between the probe gauge length and the tool gauge length.

So if your probe is 50mm long and tool is 70 your height offset would be +20 since you are setting g54 to your vise