BL Touch

dc42

Are you allowing the bed to cool right down to room temperature before you start the tuning process? That is essential.

Gost101

@dc42 indeed.

droftarts

@Gost101 M500 saves the results of an autotune (and some other info) to config_override.g in the 'sys' folder on your SD card. An example of config_override.g:

; config-override.g file generated in response to M500 at 2020-09-30 10:19
; This is a system-generated file - do not edit
; Heater model parameters
M307 H0 A215.5 C661.6 D5.8 S1.00 V11.6 B1
M307 H1 A341.8 C144.9 D4.6 S1.00 V12.2 B0
M307 H2 A341.8 C144.9 D4.6 S1.00 V12.2 B0
; Workplace coordinates
G10 L2 P1 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P2 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P3 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P4 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P5 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P6 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P7 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P8 X0.00 Y0.00 Z0.00 U0.00
G10 L2 P9 X0.00 Y0.00 Z0.00 U0.00

You can then:

either open config_override.g, copy the M307 H0 ... line to your config.g, making sure you paste it in after, or in place of, any existing M307 H0 command,

or add M501 to the end of your config.g, which causes it to run config_override.g after config.g.

M500 and M501 are well-documented in the gcode dictionary: https://duet3d.dozuki.com/Wiki/Gcode?revisionid=HEAD#Section_M500_Store_parameters

Ian

Gost101

@droftarts Thanks. Also the printer just finished the M303 with another cancelled:

9/30/2020, 3:27:43 AM	Auto tune cancelled because target temperature was not reached
9/30/2020, 2:57:35 AM	Auto tune phase 1, heater on
9/30/2020, 2:57:29 AM	M303 H0 S70
Auto tuning heater 0 using target temperature 70.0°C and PWM 1.00 - do not leave printer unattended
9/30/2020, 2:57:22 AM	M307 H0 A55 C297 D23

Gost101

@droftarts Is there a way to ignore the safety's and allow the bed to heat up to 70*C?

droftarts

@Gost101 It's going to be very difficult to tune the bed to the maximum temperature it can achieve, because sometimes it gets there, and sometimes it doesn't. There isn't anyway to disable the heater warning, because that would be unsafe. Try tuning to 60C.

Also, have you changed the thermistor setting in config.g to what they actually are? I've just checked the Creality CR10 S5 Marlin firmware source code. Your bed thermistor should be a 100k EPCOS, and so is your hotend as standard. For the hot end, you linked an E3D heater cartridge, not the thermistor! Are you still using the stock thermistor? If so, it's also a 100k EPCOS thermistor. If they are both standard, change these lines in config.g for (slightly) more accurate temperatures:

M308 S0 P"bedtemp" Y"thermistor" T100000 B4092 ; configure sensor 0 as thermistor on pin bedtemp
...
M308 S1 P"e0temp" Y"thermistor" T100000 B4092  ; configure sensor 1 as thermistor on pin e0temp

If you've changed the hot end thermistor, post what it is. Perhaps also post your current config.g.

Ian

Gost101

I'm using this e3D thermistor for the hotend and the stock one for the bed. Granted I need to buy a higher temp one for the hotend. link text alt text

droftarts

@Gost101 Okay, so that's a Semitec 104NT (a drop-in replacement for the discontinued Semitec 104GT). Change config.g to:

M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8 ; configure sensor 1 as thermistor on pin e0temp

Ian

Gost101

@droftarts Tunning for the bed failed again.

Gost101

@droftarts Is there a way to increase the time before the heater faults for rising to slowly?

Gost101

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)

; General preferences
G90                                                ; send absolute coordinates...
M83                                                ; ...but relative extruder moves
M550 P"A.C.E."                                     ; set printer name
M918 P1 E4 F2000000                                ; configure direct-connect display

; Network
M551 P"SpaceForceHu2020!!"                         ; set password
M552 S1                                            ; enable network
M586 P0 S1                                         ; enable HTTP
M586 P1 S0                                         ; disable FTP
M586 P2 S0                                         ; disable Telnet

; Drives
M569 P0 S1                                         ; X physical drive 0 goes backwards
M569 P1 S1                                         ; Y physical drive 1 goes backwards
M569 P2 S0                                         ; Z One physical drive 2 goes forwards
M569 P2 S0                                         ; Z One physical drive 2 goes forwards
M569 P3 S0                                         ; E physical drive 3 goes backwards
M584 X0 Y1 Z2 E3                                   ; set drive mapping
M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E415.00                  ; set steps per mm
M566 X1200.00 Y1200.00 Z24.00 E300.00              ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z180.00 E6000.00            ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z100.00 E5000.00              ; set accelerations (mm/s^2)
M906 X800 Y800 Z800 E1000 I50                      ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                            ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                                   ; set axis minima
M208 X500 Y500 Z500 S0                             ; set axis maxima

;Filiment Out Sensor
M591 D0 P1 C"e0stop" S1                            ; filiment out sensor


; Endstops
M574 X1 S1 P"xstop"                                ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop"                                ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 S0 C"exp.heater7"                             ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F600 T9000                ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X37 Y0 Z2.150                               ; set Z probe trigger value, offset and trigger height
M557 X30:470 Y30:470 S25                           ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4092     ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                              ; create bed heater output on bedheat and map it to sensor 0
M307 H0 A340.0 C140.0 D600 S1.00 V0.0 B1           ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0                                            ; map heated bed to heater 0
M143 H0 S72                                        ; set temperature limit for heater 0 to 72C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8   ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                               ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit

; Fans
M950 F0 C"fan0" Q500                               ; create fan 0 on pin fan0 and set its frequency
M106 P0 S1 H-1                                     ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                               ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                                  ; set fan 1 value. Thermostatic control is turned on
M950 F2 C"fan2" Q500                               ; create fan 2 on pin fan2 and set its frequency
M106 P2 S1 H1:0 T45                                ; set fan 2 value. Thermostatic control is turned on

; Tools
M563 P0 S"Hot end" H1 D0 F1:2                      ; define tool 1
G10 P0 X0 Y0 Z0                                    ; set tool 1 axis offsets
G10 P0 R0 S0                                       ; set initial tool 1 active and standby temperatures to 0C


; Custom settings are not defined

; Miscellaneous
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

fcwilt

@Gost101 said in BL Touch:

@droftarts Is there a way to increase the time before the heater faults for rising to slowly?

From the docs:

If auto tuning fails with a message that the temperature is not rising fast enough, this indicates that either you are using too low a P value in the M303 command, or the dead time in the existing model is much too low for your heater. You can increase the dead time using the M307 command. For example, sending M307 H0 D30 will increase the dead time to 30 seconds. The actual dead time will be known after a successful auto tuning.

Frederick

Gost101

@peter247 @droftarts @fcwilt @Phaedrux @jay_s_uk @dc42 @Veti Everything works now. Here is the files for them: !!Update I'm unable to upload anything to this form for some reason so the code will be here instead!!
Config:

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)

; General preferences
G90                                                ; send absolute coordinates...
M83                                                ; ...but relative extruder moves
M550 P"A.C.E."                                     ; set printer name
M918 P1 E4 F2000000                                ; configure direct-connect display

; Network
M551 P"SpaceForceHu2020!!"                         ; set password
M552 S1                                            ; enable network
M586 P0 S1                                         ; enable HTTP
M586 P1 S0                                         ; disable FTP
M586 P2 S0                                         ; disable Telnet

; Drives
M569 P0 S1                                         ; X physical drive 0 goes backwards
M569 P1 S1                                         ; Y physical drive 1 goes backwards
M569 P2 S0                                         ; Z One physical drive 2 goes forwards
M569 P2 S0                                         ; Z One physical drive 2 goes forwards
M569 P3 S0                                         ; E physical drive 3 goes backwards
M584 X0 Y1 Z2 E3                                   ; set drive mapping
M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E415.00                  ; set steps per mm
M566 X1200.00 Y1200.00 Z24.00 E300.00              ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z180.00 E6000.00            ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z100.00 E5000.00              ; set accelerations (mm/s^2)
M906 X800 Y1200 Z800 E1000 I50                      ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                            ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1                                   ; set axis minima
M208 X500 Y500 Z500 S0                             ; set axis maxima

;Filiment Out Sensor
M591 D0 P1 C"e0stop" S1                            ; filiment out sensor


; Endstops
M574 X1 S1 P"xstop"                                ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop"                                ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 S0 C"exp.heater7"                             ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F600 T9000                ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X37 Y0 Z2.150                               ; set Z probe trigger value, offset and trigger height
M557 X30:470 Y30:470 S25                           ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4092     ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                              ; create bed heater output on bedheat and map it to sensor 0
M307 H0 A340.0 C140.0 D600 S1.00 B1           ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0                                            ; map heated bed to heater 0
M143 H0 S72                                        ; set temperature limit for heater 0 to 72C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8   ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                               ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit

; Fans
M950 F0 C"fan0" Q500                               ; create fan 0 on pin fan0 and set its frequency
M106 P0 S1 H-1                                     ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                               ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                                  ; set fan 1 value. Thermostatic control is turned on
M950 F2 C"fan2" Q500                               ; create fan 2 on pin fan2 and set its frequency
M106 P2 S1 H1:0 T45                                ; set fan 2 value. Thermostatic control is turned on

; Tools
M563 P0 S"Hot end" H1 D0 F1:2                      ; define tool 1
G10 P0 X0 Y0 Z0                                    ; set tool 1 axis offsets
G10 P0 R0 S0                                       ; set initial tool 1 active and standby temperatures to 0C


; Custom settings are not defined

; Miscellaneous
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

bed:

![0_1601478305928_be382bf7-6196-4141-a7b8-e83585cb6c91-image.png](Uploading 100%) code_text

home all:

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)
G91                      ; relative positioning
G1 H2 Z5 F9000           ; lift Z relative to current position
G1 H1 X-505 Y-505 F21600 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F9000        ; go back a few mm
G1 H1 X-505 Y-505 F7200  ; move slowly to X and Y axis endstops once more (second pass)
G90                      ; absolute positioning                     
G1 X250 Y250 F9000       ; go to first bed probe point and home Z
G30                      ; home Z by probing the bed
G1 Z10                   ; raise Z 10mm

; Uncomment the following lines to lift Z after probing
;G91                     ; relative positioning
;G1 Z5 F150              ; lift Z relative to current position
;G90                     ; absolute positioning

home z:

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)
G91              ; relative positioning
G1 H2 Z5 F9000   ; lift Z relative to current position
G90              ; absolute positioning
G1 X15 Y15 F9000 ; go to first probe point
G30              ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91             ; relative positioning
;G1 Z5 F150      ; lift Z relative to current position
;G90             ; absolute positioning

home x:

; homex.g
; called to home the X axis
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)
G91                ; relative positioning
G1 H2 Z5 F9000     ; lift Z relative to current position
G1 H1 X-505 F21600 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 F9000     ; go back a few mm
G1 H1 X-505 F7200  ; move slowly to X axis endstop once more (second pass)
G1 H2 Z-5 F9000    ; lower Z again
G90                ; absolute positioning

home y:

; homey.g
; called to home the Y axis
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)
G91                ; relative positioning
G1 H2 Z5 F9000     ; lift Z relative to current position
G1 H1 Y-505 F21600 ; move quickly to Y axis endstop and stop there (first pass)
G1 H2 Y5 F9000     ; go back a few mm
G1 H1 Y-505 F7200  ; move slowly to Y axis endstop once more (second pass)
G1 H2 Z-5 F9000    ; lower Z again
G90                ; absolute positioning

Time to break it more lol. I'm now trying to use both z axis independent of each other to calibrate them with a BL Tocuh.
I have read this: Bed levelling using multiple independent Z motors and the following code is what I have created for it. However the printer will home all as it would before. How do I level each axis via the BL Touch not only as part of Home All & Home Z but also as just a macro to level it.
config:

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)

; General preferences
G90                                                ; send absolute coordinates...
M83                                                ; ...but relative extruder moves
M550 P"A.C.E."                                     ; set printer name
M918 P1 E4 F2000000                                ; configure direct-connect display

; Network
M551 P"SpaceForceHu2020!!"                         ; set password
M552 S1                                            ; enable network
M586 P0 S1                                         ; enable HTTP
M586 P1 S0                                         ; disable FTP
M586 P2 S0                                         ; disable Telnet

; Drives
M569 P0 S1                                         ; X physical drive 0 goes backwards
M569 P1 S1                                         ; Y physical drive 1 goes backwards
M569 P2 S0                                         ; Z One physical drive 2 goes forwards
M569 P3 S0                                         ; E physical drive 3 goes backwards
M569 P4 S0                                         ; Z Two physical drive 2 goes forwards
M584 X0 Y1 Z2:4 E3                                 ; set drive mapping
M671 X-23:523. Y0:0 S0.5;
M350 X16 Y16 Z16 E16 I1                            ; configure microstepping with interpolation
M92 X80.00 Y80.00 Z400.00 E415.00                  ; set steps per mm
M566 X1200.00 Y1200.00 Z24.00 E300.00              ; set maximum instantaneous speed changes (mm/min)
M203 X9000.00 Y9000.00 Z180.00 E6000.00            ; set maximum speeds (mm/min)
M201 X500.00 Y500.00 Z100.00 E5000.00              ; set accelerations (mm/s^2)
M906 X800 Y1200 Z800 E1000 I50                      ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                            ; Set idle timeout

; Axis Limits
M208 X30:470 Y0:250                                ; X carriage moves from 30 to 470, Y bed goes from 0 to 250
M208 X0 Y0 Z0 S1                                   ; set axis minima
M208 X500 Y500 Z500 S0                             ; set axis maxima

;Filiment Out Sensor
M591 D0 P1 C"e0stop" S1                            ; filiment out sensor


; Endstops
M574 X1 S1 P"xstop"                                ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop"                                ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S2                                         ; configure Z-probe endstop for low end on Z

; Z-Probe
M950 S0 C"exp.heater7"                             ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H5 F600 T9000                ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X37 Y0 Z2.150                             ; set Z probe trigger value, offset and trigger height
M557 X30:470 Y30:470 S25                           ; define mesh grid

; Heaters
M308 S0 P"bedtemp" Y"thermistor" T100000 B4092     ; configure sensor 0 as thermistor on pin bedtemp
M950 H0 C"bedheat" T0                              ; create bed heater output on bedheat and map it to sensor 0
M307 H0 A340.0 C140.0 D600 S1.00 B1                ; enable bang-bang mode for the bed heater and set PWM limit
M140 H0                                            ; map heated bed to heater 0
M143 H0 S72                                        ; set temperature limit for heater 0 to 72C
M308 S1 P"e0temp" Y"thermistor" T100000 B4725 C7.06e-8   ; configure sensor 1 as thermistor on pin e0temp
M950 H1 C"e0heat" T1                               ; create nozzle heater output on e0heat and map it to sensor 1
M307 H1 B0 S1.00                                   ; disable bang-bang mode for heater  and set PWM limit

; Fans
M950 F0 C"fan0" Q500                               ; create fan 0 on pin fan0 and set its frequency
M106 P0 S1 H-1                                     ; set fan 0 value. Thermostatic control is turned off
M950 F1 C"fan1" Q500                               ; create fan 1 on pin fan1 and set its frequency
M106 P1 S1 H1 T45                                  ; set fan 1 value. Thermostatic control is turned on
M950 F2 C"fan2" Q500                               ; create fan 2 on pin fan2 and set its frequency
M106 P2 S1 H1:0 T45                                ; set fan 2 value. Thermostatic control is turned on

; Tools
M563 P0 S"Hot end" H1 D0 F1:2                      ; define tool 1
G10 P0 X0 Y0 Z0                                    ; set tool 1 axis offsets
G10 P0 R0 S0                                       ; set initial tool 1 active and standby temperatures to 0C


; Custom settings are not defined

; Miscellaneous
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; set voltage thresholds and actions to run on power loss

bed:

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)
M561 ; clear any bed transform
G29  ; probe the bed and enable compensation
G30 P0 X30 Y250 Z-505 ; probe near a leadscrew, half way along Y axis
G30 P1 X470 Y250 Z-505 S2 ; probe near a leadscrew and calibrate 2 motors

I've read older topic on this. The z axis lead screws are located at about -23 and 530. However if a leveling is performed it would be best to do it at 30 and 470 while the bed is centered at 250.

fcwilt

Hi,

Going from the docs I think you want to remove the G29 and add a G28.

On my printer, instead of using homing, I just set the Z=0 datum using G1 to move to the center of the bed and G30 to probe.

Frederick

Gost101

@fcwilt tried what you said didn't do what it was supposed to do. I think there is a lot more code that is involved in this.

fcwilt

@Gost101 said in BL Touch:

@fcwilt tried what you said didn't do what it was supposed to do. I think there is a lot more code that is involved in this.

Hi,

Here is my bed.g:

M98 P"probez.g"       ; set Z=0 datum (see below)

; specify where bed leveling adjustment screws are located

M671 X-160:-160:160  Y-160:160:0 ; positions for adjusting screws 1,2,3

; probe near each adjusting screw and compute results

G30 P2 X-140 Y-140 Z-99999   ; probe near an adjusting screw #1
G30 P0 X-140 Y140  Z-99999   ; probe near an adjusting screw #2
G30 P1 X140  Y0    Z-99999 S3; probe near an adjusting screw #3 and compute results

Here is my probez.g:

M950 S0 C"duex.pwm5"                                ; create servo pin 0 for BLTouch
M558 P9 C"^zprobe.in" H2 F120 T12000 R0.2 A5 S0.01  ; set type for BLtouch and set parameters
G31 P25 X0 Y24.5 Z2.500                             ; set trigger value, offset and trigger height (larger = closer)

G29 S2                  ; cancel mesh bed compensation
M290 R0 S0              ; cancel baby stepping

G1 X0 Y-24.5            ; position for probing
G30                     ; do single probe - sets Z to probe trigger height

Phaedrux

@Gost101 said in BL Touch:

I think there is a lot more code that is involved in this.

You're also going to need an M671 in your config.g to define the location of the lead screws. Review the independent z axis leveling doc again.

droftarts

@Phaedrux said in BL Touch:

You're also going to need an M671 in your config.g to define the location of the lead screws. Review the independent z axis leveling doc again.

He's got one, config.g line 27:

M671 X-23:523. Y0:0 S0.5;

@Gost101 Though delete the trailing '.' after '523'. And this is odd, line 36 config.g

M208 X30:470 Y0:250

It has two M208 commands following it, which will supersede it, so delete it. Though I thought that X homes off the bed? Or did you move the microswitch so it doesn't?

Re bed.g, the G29 should probably be G29 S2 to clear the bed mesh, rather than create a bed mesh. You want home (G28) first, then do the bed levelling (the G30 commands), then create (G29) or apply a saved (G29 S1) bed mesh. So try:

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.1.4 on Mon Sep 28 2020 07:45:49 GMT-0600 (Mountain Daylight Time)

M561 ; clear any bed transform
G29 S2  ; disable mesh compensation
G28 ; home all
G30 P0 X30 Y250 Z-505 ; probe near a leadscrew, half way along Y axis
G30 P1 X470 Y250 Z-505 S2 ; probe near a leadscrew and calibrate 2 motors
G29 ; or G29 S1 - create or load bed compensation mesh

Ian

fcwilt

@droftarts said in BL Touch:

M208 X30:470 Y0:250

That is an alternate form for M208.

The number before the : is the min, after the : is the max.

His line is missing the Z values but if they were added it would be perfectly valid - it is the form I use.

Frederick

Phaedrux

@fcwilt Yes it's a valid form, but it's being over written with additional commands so isn't taking effect.

; Axis Limits
M208 X30:470 Y0:250                                ; X carriage moves from 30 to 470, Y bed goes from 0 to 250
M208 X0 Y0 Z0 S1                                   ; set axis minima
M208 X500 Y500 Z500 S0                             ; set axis maxima