Z Offset

Mickyg02

No matter what i do i can not get my Zoffset so that my nozzle is just touching paper over the bed? i have calibrated my z offset and checked config files any idea?

; Configuration file for Duet WiFi (firmware version 1.21)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Tue Oct 09 2018 13:27:56 GMT+0300

; General preferences
M80 ; Turns on the ATX power supply
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

M667 S1 ; Select CoreXY mode

; Network
M550 PBLV mgn Cube ; Set machine name
M552 S1 ; Enable network
M587 S"TelstraEA8841" P"nrsn4wdrjz" ; Configure

M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S0 ; Drive 0 goes backwards blv: its was S1
M569 P1 S0 ; Drive 1 goes backwards blv: its was S1
M569 P2 S0 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes backwards WAS 0
M569 P4 S0 ; Drive 4 goes backwards WAS 0
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X200 Y200 Z405 E425 ; Set steps per mm for Bondtech.
M566 X420 Y420 Z24 E300 ; Set maximum instantaneous speed changes (Jerk) (mm/min)
M203 X15000 Y15000 Z350 E5000 ; Set maximum speeds (mm/min)
M201 X1500 Y1500 Z300 E5000 ; Set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Bed Leveling
M584 X0 Y1 Z2:4 E4 P2 ; two Z motors connected to driver outputs Z and E1
M671 X-50:347 Y0:0 S3 ; leadscrews at left (connected to Z) and right (connected to E1) of X axis

; Pressure advance
M572 D0 S0.3.5 ; disabled Pressure advance

; Axis Limits
M208 X-23 Y0 Z0 S1 ; Set axis minima
M208 X320 Y321 Z350 S0 ; Set axis maxima

; Endstops
M574 Z1 S2 ; Set endstops controlled by probe
M574 X1 Y2 S1 ; Set active high endstops edit: Y endstop is high(max). (M574 X1 Y2 S1)
M574 Z1 S2 ; Define Z to use Probe. Home to Min

; Filament sensor
M591 D0 P1 C3 S1 ; Set Filament sensor Simple type (High) for extruder drive 0, connected to endstop input 3 (E0)

;Disable Heater
M307 H7 A-1 C-1 D-1 ; Disable the 7th Heater for BLTOUCH

; Z-Probe
G31 X40 Y-20 Z1.18 ; Z Probe Trigger Height
M558 P9 H5 F100 T4000 A5 S0.050 R0.5 B1 ; Set Z probe type to bltouch and the dive height + speeds
M557 X0:240 Y60:270 S35 ; Define mesh grid

; Heaters
M307 H7 A-1 C-1 D-1 ; Disable the 7th Heater to free up PWM channel 5 on the Duex board.
M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M143 H0 S100 ; Set temperature limit for heater 0 to 100C
M305 P1 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S260 ; Set temperature limit for heater 1 to 260C

; Fans
M106 P0 F500 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P1 F500 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned off
M106 P2 F500 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

; Tools
M563 P0 D0 H1 ; 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

; Automatic power saving
M911 S21 R22 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

; Custom settings are not configured
M564 H0 ; Let the Jog buttons work blv: added to allow jog buttons

; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool on Tue Oct 09 2018 13:27:56 GMT+0300
M291 P"Bed tilt levelling" R"Probing.." S1 T2
G28 ; home all axis bb
G29 S2
M561 ; clear any bed transform
G90 ; absolute positioning bb
G30 P0 X0 Y150 H0 Z-99999
G30 P1 X240 Y150 H0 Z-99999 S
M291 P"Bed tilt levelling finished !" R"Probing.." S1 T2
M291 P"Probing mesh grid" R"Probing.." S1 T2
G28 ; home all axis bb
G90 ; absolute positioning bb
M557 X0:240 Y60:270 S30 ; Define mesh grid
G29 S0 ; Probe the bed and save height map to file
M374 ; Save calibration data. Default is sys/heightmap.csv

Phaedrux

@Mickyg02 said in Z Offset:

Z405

Is your Z axis steps per mm really 405? I could see 400.

What do you have in homeall?

Phaedrux

@Mickyg02 said in Z Offset:

G31 X40 Y-20 Z1.18 ; Z Probe Trigger Height
M558 P9 H5 F100 T4000 A5 S0.050 R0.5 B1 ; Set Z probe type to bltouch and the dive height + speeds

Try flipping the order of these lines.

Mickyg02

Home All
G91 ; relative positioning
G1 Z5 F6000 S2 ; lift Z relative to current position
G1 S1 X-355 Y355 F6000 ; move quickly to X or Y endstop and stop there (first pass)
G1 S1 X-355 ; home X axis
G1 S1 Y355 ; home Y axis
G1 X5 Y-5 F6000 ; go back a few mm
G1 S1 X-355 F360 ; move slowly to X axis endstop once more (second pass)
G1 S1 Y355 ; then move slowly to Y axis endstop
G90 ; absolute positioning
G1 X152 Y166.4 F6000 ; go to first bed probe point and home Z
G30 ; home Z by probing the bed
G92 Z1.24
; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 S2 Z5 F100 ; lift Z relative to current position
;G90 ; absolute positioning

Phaedrux

@Mickyg02 said in Z Offset:

G92 Z1.24

Remove that. You're forcing a Z position AFTER you've used the probe to find the actual Z0 position.

Mickyg02

I only just added that sorry my issue was before i added it

Phaedrux

@Phaedrux said in Z Offset:

G31 X40 Y-20 Z1.18 ; Z Probe Trigger Height
M558 P9 H5 F100 T4000 A5 S0.050 R0.5 B1 ; Set Z probe type to bltouch and the dive height + speeds

In that case, Try flipping the order of these lines.

Mickyg02

So simple but it worked thank you so much a minor Christmas miracle for me, have a good Christmas

Phaedrux

Ho ho ho

jens55

Green Giant ....