@johonline
My solution to measure the nozzle tip on the tool changer with a 2nd micro switch on the edge of the print bed (in series in the micro switch on the tool carrier). --> I no longer need to adjust the microsteps! (the nozzle and the bed should be hot!)

T-1
M98 P"homez.g"			; Home Z
G90
G1 Z10
G1 X309.5 Y205 Z10 F50000
G30 S-1
var null_Z = move.axes[2].machinePosition 0.03;   0.1 eng   -0.6 weit

G1 Y190 Z10

T0
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z0 = var.null_Z - move.axes[2].machinePosition
G10 P0 Z{var.tool_Z0}
G1 Y190 Z10


T1
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z1 = var.null_Z - move.axes[2].machinePosition
G10 P1 Z{var.tool_Z1}
G1 Y190 Z10


T2
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z2 = var.null_Z - move.axes[2].machinePosition
G10 P2 Z{var.tool_Z2}
G1 Y190 Z10


T3
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z3 = var.null_Z - move.axes[2].machinePosition
G10 P3 Z{var.tool_Z3}

G1 Y190 Z10

T-1

M500 P10

If I connect the same temperature sensor to the Duet 2, it shows a temperature that is 15° higher than the temperature connected to the Duex 5.

config.g

;....

M308 S1 P"e0temp" Y"thermistor" A"T0" T100000 B4725 C7.06e-8 	; Set thermistor
M950 H1 C"e0heat" T1						; Extruder 0 heater
M143 H1 S355 							; Set temperature limit for heater 1 

M308 S2 P"e1temp" Y"thermistor" A"T1" T100000 B4725 C7.06e-8 	; Set thermistor
M950 H2 C"e1heat" T2						; Extruder 0 heater
M143 H2 S355 							; Set temperature limit for heater 2

M308 S3 P"e2temp" Y"thermistor" A"T2" T100000 B4725 C7.06e-8	; Set thermistor
M950 H3 C"duex.e2heat" T3					; Extruder 0 heater
M143 H3 S355 							; Set temperature limit for heater 3 

M308 S4 P"e3temp" Y"thermistor" A"T3" T100000 B4725 C7.06e-8	; Set thermistor
M950 H4 C"duex.e3heat" T4					; Extruder 0 heater
M143 H4 S355 							; Set temperature limit for heater 4 

;......

@johonline
My solution to measure the nozzle tip on the tool changer with a 2nd micro switch on the edge of the print bed (in series in the micro switch on the tool carrier). --> I no longer need to adjust the microsteps! (the nozzle and the bed should be hot!)

T-1
M98 P"homez.g"			; Home Z
G90
G1 Z10
G1 X309.5 Y205 Z10 F50000
G30 S-1
var null_Z = move.axes[2].machinePosition 0.03;   0.1 eng   -0.6 weit

G1 Y190 Z10

T0
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z0 = var.null_Z - move.axes[2].machinePosition
G10 P0 Z{var.tool_Z0}
G1 Y190 Z10


T1
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z1 = var.null_Z - move.axes[2].machinePosition
G10 P1 Z{var.tool_Z1}
G1 Y190 Z10


T2
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z2 = var.null_Z - move.axes[2].machinePosition
G10 P2 Z{var.tool_Z2}
G1 Y190 Z10


T3
G90
G1 Z10
G1 X309.5 Y200 Z10 F50000
G1 X309.5 Y205 Z10 F50000
G30 S-1
var tool_Z3 = var.null_Z - move.axes[2].machinePosition
G10 P3 Z{var.tool_Z3}

G1 Y190 Z10

T-1

M500 P10

Thanks
I can use both solutions in my project.

I wrote a macro that takes the offset position from the current position (over a permanently installed camera) using G10.

;_Cam_XYset.g
;setze Offset X, Y für das aktive Tool

var curX = 310 - move.axes[0].machinePosition
var curY = -3 - move.axes[1].machinePosition

if !(state.currentTool == -1)
	G10 P{state.currentTool} X{var.curX} Y{var.curY} 

it works fine.

now I would like to automatically write the values to a file (e.g.:XYZ_offsete.g). But my attempt does not resolve the variables.

;save_offsets.g

M28 "0:/sys/xyz_offset.g"

G10 P0 X{tools[0].offsets[0]} Y{tools[0].offsets[1]} Z{tools[0].offsets[2]}        ; T0
G10 P1 X{tools[1].offsets[0]} Y{tools[1].offsets[1]} Z{tools[1].offsets[2]}        ; T1
G10 P2 X{tools[2].offsets[0]} Y{tools[2].offsets[1]} Z{tools[2].offsets[2]}        ; T2
G10 P3 X{tools[3].offsets[0]} Y{tools[3].offsets[1]} Z{tools[3].offsets[2]}        ; T3


M29 "0:/sys/xyz_offset.g"

returns

;xyz_offset.g"

G10 P0 X{tools[0].offsets[0]} Y{tools[0].offsets[1]} Z{tools[0].offsets[2]}
G10 P1 X{tools[1].offsets[0]} Y{tools[1].offsets[1]} Z{tools[1].offsets[2]} 
G10 P2 X{tools[2].offsets[0]} Y{tools[2].offsets[1]} Z{tools[2].offsets[2]}  
G10 P3 X{tools[3].offsets[0]} Y{tools[3].offsets[1]} Z{tools[3].offsets[2]} 

but it should return like that

G10 P0 X19.85 Y43.7 Z-7.68	     
G10 P1 X20.45 Y44 Z-6.71	
G10 P2 X20.15 Y44 Z-7.46	
G10 P3 X21.25 Y43.7 Z-6.99