Heigh error after calibrating

Stephen6309

@TristanKoeln The code I showed above it in a macro, in the macors folder and it called PETGOffset. In the slicers start gcode I have added: M98 P"/macros/PETGOffset" ; set z probe offsets
to call the macro. Editing a macro is faster than editing config.g and then waiting for the duet to restart after the edit.

Also, I have a different one for setting PLA, since the hotend is at a lower temp than PETG. First line in the macro is the printer's name, since I have two printers.

ziggymanpopo

Another way is to use M564 S0 that will allow you to probe down to the glas it overrided the previous G92 Z0 comand which tells the printer where Z0
Or your bed height is at ....
Checknout the documentation tab on this site (three bars top left)
You will find all of the process under the z prob section look for a link to calibrate z-probe
This link takes you to what you seek
Good luck..

Phaedrux

Post your config.g homeall homez bed.g and start gcode so we can see everything that could be going on in sequence.

TristanKoeln

@Phaedrux here are all my files:
homez.g homeall.g config.g bed.g
Startcode:
M98 P"/macros/PLA_Offset" ;set z probe offsets
G29 S1 ;load heighmap
@Stephen6309 i add the macro thing xD

fcwilt

@TristanKoeln said in Heigh error after calibrating:

Startcode:
M98 P"/macros/PLA_Offset" ;set z probe offsets
G29 S1 ;load heighmap
@Stephen6309 i add the macro thing xD

Adjusting the probe Z trigger height is a curious way to make such an adjustment.

The probe Z trigger height should be a constant that only varies with temperature perhaps.

If you wish to tweak the Z height when printing different materials you may want to use the "baby steps" setting instead - see M290.

You can, if you wish, make use of the filament handling feature of DWC to specify different filaments at the start of a print and obtain different Z height "tweaks" using M290 based on the selected filament.

Frederick

TristanKoeln

@fcwilt thx for you advice, but first i want that my printer prints something befor i will realy start tweaking out some thing, right now my problem is that the nozzel is allways 1-2 mm to high

fcwilt

@TristanKoeln said in Heigh error after calibrating:

@fcwilt thx for you advice, but first i want that my printer prints something befor i will realy start tweaking out some thing, right now my problem is that the nozzel is allways 1-2 mm to high

OK that should be easy to correct.

One thing you need to remember is that before creating a height map with G29 S0 and before loading the height map with G29 S1 you need to perform a G1 to move the probe to the center of the bed and then do a single G30 to set the Z=0 datum.

And of course for the Z probe to work properly it's Z trigger height value (in G31) needs to be set to the correct value.

Frederick

TristanKoeln

@fcwilt all of that is done see in the homeZ and the trigger hiegh is calibrated with :
Move the nozzel to the middle
G30
than moving nozzel down till it hits the bed
G92 Z0
G1 Z10
G30 S-1

fcwilt

@TristanKoeln said in Heigh error after calibrating:

@fcwilt all of that is done see in the homeZ and the trigger hiegh is calibrated with :
Move the nozzel to the middle
G30
than moving nozzel down till it hits the bed
G92 Z0
G1 Z10
G30 S-1

That calibration looks fine.

However homeZ.g looks a bit wonky.

I've re-posted it here using the </> tag:

; homez.g
; called to home the Z axis
;
G91               ; relative positioning
G1 H2 Z10 F6000   ; lift Z relative to current position
G1 H1 Z-500 F3000 ;Go down till endstop
G1 H2 Z10 F6000
G1 X200 Y200 F4000 ;go to midle
G30 ; move Z down until the endstop is triggered
G92 Z0         ; set Z position to axis minimum (you may want to adjust this)

; Uncomment the following lines to lift Z after probing
;G91              ; relative positioning
;G1 Z10 F100      ; lift Z relative to current position
G90              ; absolute positioning

This line, which occurs after the G30, may be the cause of your problems:

G92 Z0 ; set Z position to axis minimum (you may want to adjust this)

On my printer, running firmware 3.2.2, after a G30 the Z position is the probe dive height (the H parameter in M558) plus the Z trigger height (the Z parameter in G31).

But the G92 is telling the firmware that the Z position is 0.

Perhaps that is correct for your firmware but it would cause a problem with mine.

Frederick

TristanKoeln

@fcwilt with the G92 Z(dive heigh+triger high)
is still the same problem

fcwilt

@TristanKoeln said in Heigh error after calibrating:

@fcwilt with the G92 Z(dive heigh+triger high)
is still the same problem

After you performed the calibration routine you posted did you go back and update the G31 command with the correct Z trigger height as reported by the G30 S-1?

Frederick

TristanKoeln

@fcwilt jup its 3.760

fcwilt

@TristanKoeln said in Heigh error after calibrating:

@fcwilt with the G92 Z(dive heigh+triger high)
is still the same problem

Since the G30 leaves Z at dive height + trigger height setting it again to the same value with G92 is redundant.

It doesn't hurt but isn't needed.

Frederick

fcwilt

@TristanKoeln said in Heigh error after calibrating:

@fcwilt jup its 3.760

Are you still running the "PLA" macro?

If so what does it look like.

Frederick

TristanKoeln

@fcwilt

G31 X-31.7 Y3,16 Z3,760 P25
M291 P"PLA Offset" S0 T5

fcwilt

@TristanKoeln said in Heigh error after calibrating:

@fcwilt

G31 X-31.7 Y3,16 Z3,760 P25
M291 P"PLA Offset" S0 T5

And that is the height reported by your calibration routine?

Frederick

TristanKoeln

@fcwilt ya

fcwilt

Hi,

Recall that before creating a height map with G29 S0 or before loading the height map with G29 S1 you need to position the probe to the center of the bed and do a single G30 to set the Z=0 datum.

Having set the Z trigger height to the value as reported by your calibration routine did you go back and re-create the height map using the new value?

Are you also setting the Z=0 datum when loading the new height map?

I mentioned that changing the Z trigger height to accommodate different filaments was not a good approach - one reason being is that it will mess up setting the Z=0 datum which may cause the height map to not work right.

Frederick

TristanKoeln

@fcwilt i reprobed everything still same problem, could it be something with the zmin stop and the prob are on 2 diff heights? if yes what would be the solution

fcwilt

Hi,

I've re-posted your files using the </> tag - it saves everyone the trouble of downloading your files.

Would you look at them and verify they are your current files?

Thanks.

Frederick

; Configuration file for Duet WiFi (firmware version 3)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v3.2.1 on Mon Jan 18 2021 17:44:49 GMT+0100 (Mitteleuropäische Normalzeit)

; General preferences
G90                                                 ; send absolute coordinates...
M83                                                 ; ...but relative extruder moves
M550 P"BIGCREATOR"                                  ; set printer name


; Network
M552 S1                                             ;Tun Network ON
                            
; Drives
M569 P0 S0                                          ; physical drive 0 goes forwards
M569 P1 S1                                          ; physical drive 1 goes forwards
M569 P2 S1                                          ; physical drive 2 goes forwards
M569 P3 S0                                          ; physical drive 3 goes forwards
M569 P4 S1                                          ; physical drive 4 goes forwards
M584 X0 Y1 Z2:4 E3                                  ; set drive mapping
M350 X16 Y16 Z16:16 E16 I1                          ; configure microstepping with interpolation
M92 X80.00 Y100.00 Z405:405.00 E750.00              ; set steps per mm
M566 X1800.00 Y1800.00 Z120.00:120.00 E500.00       ; set maximum instantaneous speed changes (mm/min)
M203 X36000.00 Y36000.00 Z200.00:200.00 E500.00     ; set maximum speeds (mm/min)
M201 X1000.00 Y1000.00 Z400.00:400.00 E500.00       ; set accelerations (mm/s^2)
M906 X1200 Y1200 Z1000:1000 E1000 I30               ; set motor currents (mA) and motor idle factor in per cent
M84 S30                                             ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z-10 S1                                  ; set axis minima
M208 X440 Y440 Z400 S0                              ; set axis maxima

; 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 S1 P"!zstop+!e1stop"                        ; configure active-high endstop for low end on Z via pin zstop

; Z-Probe
M558 P9 C"^zprobe.in" H5 F120 T5000                 ; BLTouch connected to Z probe IN pin
M950 S0 C"exp.heater3"                              ; create servo/gpio 0 on heater 3 pin on expansion connector
M98 P"/macros/NORMAL_Offset"                        ; set z probe offsets

M280 P0 S10                                         ; send control signal to BLTouch through servo/gpio 0                                        
                                          
;G31 P500 X0 Y0 Z25                                 ; set Z probe trigger value, offset and trigger height
M557 X10:390 Y10:390 S38:38                         ; 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 B0 S1.00                                    ; disable bang-bang mode for the bed heater and set PWM limit
M140 H0                                             ; map heated bed to heater 0
M143 H0 S120                                        ; set temperature limit for heater 0 to 120C
M308 S1 P"e1temp" Y"thermistor" T100000 B4092       ; configure sensor 1 as PT1000 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
M143 H1 S280                                        ; set temperature limit for heater 1 to 280C

; Fans
M950 F0 C"fan0" Q0                                  ; 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" Q0                                  ; create fan 1 on pin fan1 and set its frequency
;M106 P1 S1 H-1                                      ; set fan 1 value. Thermostatic control is turned off
M950 F2 C"fan2" Q0                                  ; create fan 2 on pin fan2 and set its frequency
;M106 P2 S1 H-1                                      ; set fan 2 value. Thermostatic control is turned off

; Tools
M563 P0 S"WaterColledHead" D0 H1 F-1                ; define tool 0
G10 P0 X0 Y0 Z0                                     ; set tool 0 axis offsets
G10 P0 R0 S0                                        ; set initial tool 0 active and standby temperatures to 0C

; Custom settings are not defined

; Miscellaneous
M575 P1 S1 B57600                                   ; enable support for PanelDue
M501                                                ; load saved parameters from non-volatile memory
M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000"  ; set voltage thresholds and actions to run on power loss

G28                                                 ; home

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v3.2.1 on Mon Jan 18 2021 17:44:49 GMT+0100 (Mitteleuropäische Normalzeit)
M561     ; clear any bed transform
G28      ;home
G29 S1   ; probe the bed and enable compensation
M280 P0 S90 ; retractProbe

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v3.2.1 on Mon Jan 18 2021 17:44:49 GMT+0100 (Mitteleuropäische Normalzeit)
G91               ; relative positioning
G1 H2 Z10 F6000   ; lift Z relative to current position
G1 H1 Z-500 F3000 ;Go down till endstop
G1 H2 Z10 F6000
G1 X200 Y200 F4000 ;go to midle
G30 ; move Z down until the endstop is triggered
G92 Z0         ; set Z position to axis minimum (you may want to adjust this)



; Uncomment the following lines to lift Z after probing
;G91              ; relative positioning
;G1 Z10 F100      ; lift Z relative to current position
G90              ; absolute positioning

; homeall.g
; called to home all axes
;
; generated by RepRapFirmware Configuration Tool v3.2.1 on Mon Jan 18 2021 17:44:49 GMT+0100 (Mitteleuropäische Normalzeit)

;DUAL Z 
M584 Z2:4   

M280 P0 S90
G91                     ; relative positioning
G1 H2 Z10 F6000         ; lift Z relative to current position
G1 H1 X-405 Y-405 F5000 ; move quickly to X and Y axis endstops and stop there (first pass)
G1 H2 X5 Y5 F6000       ; go back a few mm
G1 H1 X-405 Y-405 F360  ; move slowly to X and Y axis endstops once more (second pass)
M98 Phomez.g            ; move Z down stopping at the endstop
G90                     ; absolute positioning
G92 Z10                 ; set Z position to axis minimum (you may want to adjust this)

; Uncomment the following lines to lift Z after probing
;G91                    ; relative positioning
;G1 Z10 F100            ; lift Z relative to current position
;G90                    ; absolute positioning