Update:

My script works with a few little tweaks and the thought that you safe the z offset for your main tool modules in your config an if you change your tool through a script it performs the z probe of the tool and saves it internally. If i use a tool more frequently like Tool4 i can safe it in the override with M500. After a restart the main tool should be taken from the config and other tools must be changed trhough the script.

The working script looks like so:

T-1 ;deselect any tool
G28 ;home all
M400 ;wait for current movement to finish

G1 Z65 F800 ;move bed to a save height (65 as high as the filament storage) where no tool can interfere

T4 P0 ;select tool 4 without running macros (P0)

G1 X295 Y72.9 F4000 ;move TCP over the probe

M400

G30 K2 H-0.8 S-2  ;Probe the tool Z offset at the current XY position and change it so Z is 0
M500

T-1	P0 ;deselect tool
G28 U V	Z ;home U and V

The endstop switches where set as new z probes:

; Tool Probes
M558 K1 P8 C"duex.e5stop" H80 F200 ; Set left z probe with an expected 80mm probing height a probing speed of 200 mm/min
M558 K2 P8 C"duex.e6stop" H80 F200 ; Set right z probe with an expected 80mm probing height a probing speed of 200 mm/min

I might put an output of the probed offset in the console so people can copy it from there

Update:

My script works with a few little tweaks and the thought that you safe the z offset for your main tool modules in your config an if you change your tool through a script it performs the z probe of the tool and saves it internally. If i use a tool more frequently like Tool4 i can safe it in the override with M500. After a restart the main tool should be taken from the config and other tools must be changed trhough the script.

The working script looks like so:

T-1 ;deselect any tool
G28 ;home all
M400 ;wait for current movement to finish

G1 Z65 F800 ;move bed to a save height (65 as high as the filament storage) where no tool can interfere

T4 P0 ;select tool 4 without running macros (P0)

G1 X295 Y72.9 F4000 ;move TCP over the probe

M400

G30 K2 H-0.8 S-2  ;Probe the tool Z offset at the current XY position and change it so Z is 0
M500

T-1	P0 ;deselect tool
G28 U V	Z ;home U and V

The endstop switches where set as new z probes:

; Tool Probes
M558 K1 P8 C"duex.e5stop" H80 F200 ; Set left z probe with an expected 80mm probing height a probing speed of 200 mm/min
M558 K2 P8 C"duex.e6stop" H80 F200 ; Set right z probe with an expected 80mm probing height a probing speed of 200 mm/min

I might put an output of the probed offset in the console so people can copy it from there

@mikeabuilder Thank you very much, the printer was in use and i still had´nt the chance to test my code or your code. But now i know where you got these functioncalls from and i understand how i can modify my code to get the z offset if he does´nt override the config value for it automatically.
I am btw completly new to it and now it opens a whole new world with much more abilities to get data from the printer.

Again thank you very much for your competent help
I will report my status in a few days or tomorrow if it´s possible.

@mikeabuilder Line 11 could be like u said, however in the documentation od duet3d the G30 S-2 command in Line 15 should "Probe the bed at the current XY position. When the probe is triggered, adjust the Z offset of the current tool to make the current position Z=0." (G30 on Duet Documentation)

Your way an doing it looks very good and i will look more into it and might test my code and yours. Until now i had´nt the time to test it properly

Thank you for your answer so far i will update this post after my tests.

Currently i am working on my bachelor thesis and on a tool Z offset measuring script based on a Voron 2.4 Z endstop. I wanted to know where the G30 S-2 is stored or if it is stored somewhere in the memory. If it is hidden in the memory is there a way to save it in the config or with M500 in the override?

My script looks like this:

T-1					;deselect any tool
M400					;wait for current movement to finish

M574 (Z0) S1 P"..."  		;configure active high endstop switch for none on Z ;Z0 might be too much could be deletet

T4					;select tool 4

G1 Z50 F500				;move bed to a height where no tool can interfere
G1 X... Y...			;move TCP over the probe

M558 P5 K2 C"..." H60 F120  	; Probe Z to an expected 60mm with a speed of 120

M400

G30 K2 H... S-2 			;Probe the tool Z offset at the current XY position and change it so Z is 0

(M500)

G91 					;set relative positioning
G1 Z20				;move the bed 20mm down

T-1					;deselect tool

Would be wonderful to get a confirmation or a better way to do it