@dc42 Right, thanks. I guess I still don't get how I can have the probe probe at the back of the print bed.
With the maxima set to Y358 using M308, the highest value I can have with M557 for Y is Y320.
If I adjust the maxima for the Y axis to Y396 so that M557 will accept Y358, I assume this will let the carriage crash into the frame as it can't go that far.
The photo below has the probe in the position of the row I want to probe so it can physically reach.
Output of M208
Axis limits X0.0:366.0, Y-49.0:358.0, Z0.0:360.0
M557
Grid: X58.0:394.0, Y-38.0:358.0, radius -1.0, X spacing 40.0, Y spacing 40.0, 90 points
G31
Current reading 0, threshold 500, trigger height 2.28, offsets X58.0 Y-38.0
I posted the wrong meshbedlevel.g file, I had been changing it while trying to make it work. The one that is causing errors is:
G28 X ;home x
G28 Y ;home y
G28 Z ; home Z last
M557 X58:394 Y-38:358 S40 ; sets the X and Y Grid dimensions with a spacing of 40.
G29 S0 ; Run probing sequence as defined in M557 above and save height map to SD.
M374 ; Save the height map explicitly.
G1 F12000 X5 Y5 ; move the carriage back to the start
The errors in the console are:
M98 P"0:/macros/MeshLevel.g"
Warning: Skipping grid point (378.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (338.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (298.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (258.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (218.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (178.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (138.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (98.0, 322.0) because Z probe cannot reach it
Warning: Skipping grid point (58.0, 322.0) because Z probe cannot reach it
What I am trying to achieve is that the probes last probe row will be along a nozzle position of Y358 which I understand should have the probe at Y320. Y358 is the maximum Y position before the carriage will collide with the frame.
Hi all,
I've been trying to setup mesh bed leveling on my duet2 for half a day now and I can't get it to probe the last row no matter what I do. I suspect I'm making some simple mistake so if someone would look at my config, I'd appreciate it.
config.g
; Configuration file for Duet WiFi (firmware version 2.03)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool v2.1.2 on Tue Nov 19 2019 11:51:11 GMT+1100 (Australian Eastern Daylight Time)
; General preferences
G90 ; send absolute coordinates...
M83 ; ...but relative extruder moves
M550 P"HEVO" ; set printer name
M667 S1 ; select CoreXY mode
; Network
M552 S1 ; enable network
M586 P0 S1 ; enable HTTP
M586 P1 S1 ; enable FTP
M586 P2 S0 ; disable Telnet
; Drives
M569 P0 S1 ; physical drive 0 goes forwards
M569 P1 S1 ; physical drive 1 goes forwards
M569 P2 S1 ; physical drive 2 goes forwards
M569 P3 S1 ; physical drive 3 goes forwards
M584 X0 Y1 Z2:4 E3 ; set the second E to be Z2
M671 X437.0:-39 Y0:0 S4 ; Set the Z motor relative locations
M350 X16 Y16 Z16 E16 I1 ; configure microstepping with interpolation
M92 X160.00 Y160.00 Z400.00 E409.00 ; set steps per mm
M906 X800 Y800 Z800 E850 I30 ; set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout
; Speed - M556 and M203 in mm/m and M203 and M204 in mm/s
M566 X500 Y500 Z60 E800 ; set maximum instantaneous speed changes (mm/min)
M203 X30000 Y30000 Z600 E10000 ; set maximum speeds (mm/min)
M201 X9000 Y9000 Z600 E10000 ; set accelerations (mm/s^2)
M204 P800 T4000 ; Set printing and travel accelerations
; FEEDRATE CONVERSIONS
; 20mm/s = F1200
; 70mm/s = F4200
; 120mm/s = F7200
; mm/s * 60 = mm/m
; mm/m / 60 = mm/s
; Axis Limits
M208 X0 Y-49 Z0 S1 ; set axis minima
M208 X366 Y358 Z360 S0 ; set axis maxima
; Endstops
M574 X1 Y1 S3 ; set endstops controlled by motor stall detection
M574 Z1 S2 ; set endstops controlled by probe
; Z-Probe
M307 H3 A-1 C-1 D-1 ; disable heater on PWM channel for BLTouch
M558 P9 H5 F250 T12000 ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X58 Y-38 Z2.28 ; set Z probe trigger value, offset
; Heaters
M305 P0 T100000 B3950 R4700 ; set thermistor + ADC parameters for heater 0
M143 H0 S120 ; set temperature limit for heater 0 to 120C
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; set thermistor + ADC parameters for heater 1
M143 H1 S300 ; set temperature limit for heater 1 to 280C
; Fans
M106 P0 S0 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 off
; Tools
M563 P0 D0 H1 F0 ; 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
; ############################
; 11 - MISCELLANEOUS
; ############################
M501 ; Load saved parameters from non-volatile memory
T0 ; Select first tool
The mesh bed macro I'm using to run mesh bed leveling
G28 X ;home x
G28 Y ;home y
G28 Z ; home Z last
M557 X58:394 Y-38:320 S40 ; sets the X and Y Grid dimensions with a spacing of 40.
G29 S0 ; Run probing sequence as defined in M557 above and save height map to SD.
M374 ; Save the height map explicitly.
G1 F12000 X5 Y5 ; move the carriage back to
bed.g for if its important
; bed.g
; called to perform automatic bed compensation via G32
;
; generated by RepRapFirmware Configuration Tool v2.1.2 on Tue Nov 19 2019 11:51:10 GMT+1100 (Australian Eastern Daylight Time)
G28 ;home
; this is the probe locations, not the nozzles.
; consider the probe offsets.
; ignores endstops.
G30 P0 X58.0 Y152 H0 Z-99999
G30 P1 X366.0 Y152.0 H0 Z-99999 S2
G28 Z ; home Z again to help with bed sag.
G29 S1; loads the height map