hi this is my homez, i am using G30 here.

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.2.2 on Mon Jan 25 2021 21:42:05 GMT-0300 (hora estándar de Argentina)
G91              ; relative positioning
  ; lift Z relative to current position
G90              ; absolute positioning

G1 X150 Y150 F3000;
G30     X38 Y0         ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91             ; relative positioning
;G1 Z5 F100      ; lift Z relative to current position
;G90             ; absolute positioning

And this is my start gcode

G90 ; use absolute coordinates
M83 ; extruder relative mode
M104 S[first_layer_temperature] ; set extruder temp
M140 S[first_layer_bed_temperature] ; set bed temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
M109 S[first_layer_temperature] ; wait for extruder temp
G28 ; home all
G32;
G29 S1;
G1 Z2 F240
G1 X-12 Y10 F3000
G1 Z0.28 F240

thanks in advance for your help.

@phaedrux
I improved a lot, with 2.43mm.

There I change the M551, thanks.

I attach the homeall.g
homeall.g

@phaedrux
config.g updatedconfig.g bed.g

@phaedrux
M98 P"config.g"
Error: in file macro line 14 column 29: M551: string too long
HTTP is enabled on port 80
FTP is disabled
TELNET is disabled
Warning: Heater 0 appears to be over-powered. If left on at full power, its temperature is predicted to reach 297C

Hello, I know that surely this issue has been addressed, I cannot find the solution. I have an IR sensor, first calibrate the machine to make the 4 points where the threaded rods are, then it senses the bed, and this is the result. I need help., Thanks! I leave the configuration files and a couple of images[alt text](config.g bed.g image url)

HELLO I HAVE A CONSULTATION, IF I CONNECT THE PT100 THERMISTOR, I WILL NOT FUNCTION CORRECTLY THE CONTROL PANEL 7i SD ?, How can I make the SD of the LCD panel work since I have to load the .gcode files