Probe offsets and Bed Min and Max



  • I have a CoreXY custom machine
    I am having issue with not getting full bed probing.

    bed is 250x250
    probe is 75mm in front of nozzle

    hoping people can help me figure out where im going wrong.
    starts represent the grid probe area.. i cant get a full measure
    I have to trick the machining into thinking bed it larger then it is. already

    Head can reach before and after the bed on Y

    0_1563573540455_mESHBED.jpg

    Here is my config.g

    ; Configuration file for Duet WiFi
    ; executed by the firmware on start-up
    ;
    ; generated by RepRapFirmware Configuration Tool on Sun Oct 23 2016 10:30:40 GMT-0400 (Eastern Standard Time)

    ; General preferences
    M111 S0 ; Debugging off
    G21 ; Work in millimetres
    G90 ; Send absolute coordinates...
    M83 ; ...but relative extruder moves
    M555 P2 ; Set firmware compatibility to look like marlin
    M557 X10:260 Y0:350 S50 ; define a grid covering the XY area indicated with the specified grid spacing
    M376 H10 ; Taper grid after 10mm

    M667 S1 ; Select CoreXY mode
    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X280 Y350 Z300 S0 ; Set axis maxima

    ; Endstops
    M574 X1 S1 ; Reverse X endstop
    M574 Y2 S1 ; Y Max Stop
    M574 Z1 S2 ; Define Z to use BLTouch Probe. Home to Min
    M558 P5 H5 F500 T4000 X0 Y0 Z1 ; Set Z probe type/mode 5. H=Dive Height. F=Speed the bed moves
    G31 P25 X-6 Y90 Z2.46 ; Z probe trigger value, offset in relation to nozzle. And trigger height adjustment
    M581 E1 T1 ; Set Filament Sentinel to trigger and Pause print, if filament runs out

    ; BLTouch
    ; BLTouch - Heaters
    M307 H7 A-1 C-1 D-1 ; Disable the 7th Heater to free up PWM channel 5 on the Duex board.

    ; Drives
    M569 P0 S0 ; Drive X goes backwards
    M569 P1 S0 ; Drive Y goes backwards
    M569 P2 S0 ; Drive Z goes forwards
    M569 P3 S1 ; Drive E Bondtech BMG goes forwards
    M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
    M92 X200 Y200 Z796.73 E415 ; Set steps per mm
    M566 X600 Y600 Z20 E800 ; Set maximum instantaneous speed changes (mm/min)
    M203 X9000 Y9000 Z1500 E10000 ; Set maximum speeds (mm/min)
    M201 X1000 Y1000 Z250 E5000 ; Set accelerations (mm/s^2)
    M906 X1200 Y1200 Z1300 E800 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout
    M572 D0 S0.15 ; Pressure Advance

    ; Heaters
    M143 S280 ; Set maximum heater temperature to 280C
    M301 H0 S1.00 P10 I0.1 D200 T0.4 W180 B30 ; Use PID on bed heater (may require further tuning)
    M305 P0 T100000 B4138 C0 R4700 L0 H0 ; Set thermistor + ADC parameters for heater 0
    M305 P1 X200

    ; Tools
    M563 P0 D0 H1 ; Define tool 0
    G10 P0 X0 Y0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    ; Network
    ;M550 PTitanXY ; Set machine name
    M587 S"" P"*"
    M552 S1 ; Enable network and acquire dynamic address via DHCP

    ; Fans
    M106 P0 S0.3 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F500 H1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F500 H1 T45 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Custom settings are not configured



  • @adamfilip said in Probe offsets and Bed Min and Max:

    G31 P25 X-6 Y90 Z2.46

    Is the Y offset for the probe 90mm or 75mm?



  • @adamfilip said in Probe offsets and Bed Min and Max:

    M208 X0 Y0 Z0 S1 ; Set axis minima
    M208 X280 Y350 Z300 S0 ; Set axis maxima

    Question: If the nozzle is at 0,0 is it directly at the corner of the bed? Or is the nozzle off the printable area when the end stops are triggered? If so, you can correct for this by have the minima values be negative. This moves the 0,0 point to be the corner of the printable area and should help your grid make some more sense.


  • administrators


 

Looks like your connection to Duet3D was lost, please wait while we try to reconnect.