Having trouble setting the z offset
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Have you confirmed the probe is working? I don’t have any experience with BL Touch, sorry.
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My printer homes with the bl touch as the z end stop fine. I also does the bed compensation and gives a report of the bed after it done the probing. Just can't adjust the z offset. The weird part is, I have installed a Duet Ethernet on a different printer with a BL Touch and that one works fine. I did the install on this Duetwifi the same and can't figure out why the z offset refuses to change. I had this board working with an inductive sensor and it worked, but was not consistent.
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That is odd. Well if you want to post you config.g and config-override.g files I don't mind looking at them to see if anything catches my eye. Just remember you may want to redact any network names or passwords you have in them.
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; Configuration file for Duet WiFi (firmware version 1.17)
; executed by the firmware on start-up
;
; generated by RepRapFirmware Configuration Tool on Thu Apr 27 2017 06:26:16 GMT-0700 (PDT); 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
M307 H3 A-1 C-1 D-1M667 S1 ; Select CoreXY mode
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X300 Y260 Z270 S0 ; Set axis maxima; Endstops
M574 Z0 S0 ; Define active low and unused microswitches
M574 X1 Y1 S0 ; Define active high microswitches
M558 P5 X0 Y0 Z1 H5 F120 T6000 ; Set Z probe type to switch, the axes for which it is used and the probe + travel speeds
G31 P50 X28 Y15 Z0 ; Set Z probe trigger value, offset and trigger height
M557 X30:260 Y30:250 S20 ; Define mesh grid; Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes rearwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping
M92 X79.41 Y79.41 Z400 E385.05 ; Set steps per mm
M566 X600 Y600 Z24 E300 ; Set maximum instantaneous speed changes (mm/min)
M203 X18000 Y18000 Z600 E1500 ; Set maximum speeds (mm/min)
M201 X2000 Y2000 Z100 E10000 ; 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
;M579 y1; Heaters
M143 S260 ; Set maximum heater temperature to 260C
M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1; 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; Network
M550 ; Set machine name
M551 ; Set password
M552 S1 ; Enable network and acquire dynamic address via DHCP; Fans
M106 P0 S1 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
M501
; Custom settings are not configuredConfig override.
; This is a system-generated file - do not edit
; Heater model parameters
M307 H0 A90.0 C700.0 D10.0 S1.00 B1
M307 H1 A340.0 C140.0 D5.5 S1.00 B0
M307 H2 A340.0 C140.0 D5.5 S1.00 B0
M307 H4 A340.0 C140.0 D5.5 S1.00 B0
M307 H5 A340.0 C140.0 D5.5 S1.00 B0
M307 H6 A340.0 C140.0 D5.5 S1.00 B0
M307 H7 A340.0 C140.0 D5.5 S1.00 B0
; Z probe parameters
G31 P50 X28.0 Y15.0 Z2.4Thanks for looking at it. Maybe you will see something I don't. This Duetwifi is one of the first revision boards with the erase button right on the edge of the board. I initially had problems with the wifi part, but it seems to be working well with the latest stable release of the firmware and server and web control. The config.g file was generated for firmware 1.17, not 1.19.2. Would that be a problem?
Vance
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Should your M558 be "P4" instead of "P5"?
I'm not really sure here, but that is all that caught my eye.
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That should be P5 for the BL Touch. Thanks for looking.
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My printer homes with the bl touch as the z end stop fine. I also does the bed compensation and gives a report of the bed after it done the probing. Just can't adjust the z offset. The weird part is, I have installed a Duet Ethernet on a different printer with a BL Touch and that one works fine. I did the install on this Duetwifi the same and can't figure out why the z offset refuses to change. I had this board working with an inductive sensor and it worked, but was not consistent.
1. Do you by any chance have your homez.g and Z homing part of homeall.g configured as if you are using an endstop switch, instead of using G30 commands?
2. Have you checked whether the G31 command in config.g is being overridden by one in config-override.g?
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The files were all created with the configurator. The homeall.g has never worked correctly and when I look at the file, it is greek to me. When I home all, it starts with the x axis and the x axis starts grinding and slowly moves away from the endstop. I have to either cut the power of press the emergency stop to get it to stop. However, I can home the machine by homing each axis separately. The configurator will not let you configure a z endstop, only a probe. Or I never figured out how to get the configurator to configure a z endstop. This machine operated fine with the inductive sensor I had installed and I could change the z offset no problem. It just wasn't consistent. The G31 line in config.g has the z offset as 0 and the override file has the z offset as 2.4. I have been changing the z offset in the override file as that is what should be being used. They are posted above.
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For some reason, I can now change the z offset in the config override file and it takes effect now.
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Well congrats I guess?! That’s odd.
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The files were all created with the configurator. The homeall.g has never worked correctly and when I look at the file, it is greek to me. When I home all, it starts with the x axis and the x axis starts grinding and slowly moves away from the endstop. I have to either cut the power of press the emergency stop to get it to stop. However, I can home the machine by homing each axis separately.
Please post your homing files.
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; homeall.g
; called to home all axes
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; generated by RepRapFirmware Configuration Tool on Thu Apr 27 2017 06:26:16 GMT-0700 (PDT); Relative positioning
G91; Lift Z
G1 Z5 F6000; Course home X or Y
;G1 X-305 Y-305 F1800 S1
; Course home X
G1 X-305
; Course home Y
G1 Y-305: Move away from the endstops
G1 X5 Y5 F6000; Fine home X
G1 X-305 F360 S1
; Fine home Y
G1 Y-305 S1; Move Z down until the switch triggers
G1 Z-285 F1800 S1; Absolute positioning
G90; Tell the firmware where we are
G92 Z2.5; Uncomment the following line to lift the nozzle after probing
;G1 Z5 F100A little late, but here is my homeall.g file.
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The G1 X-305 Y-305 … is commented out so you need to remove the semi colon from the beginning of that line.
The next lines G1 X-305 and G1 Y-305 (course homing X and Y) don't have an S1 parameters so they will ignore the end stop switch. They should be G1 X-305 S1 and G1 Y-305 S1
The bed is being probed at the X0 Y0 position for the Z axis and while it will work, it's generally better to probe the centre of the bed
for Z home so you might want to add something like G1 X150 Y150 F6000 before the G1 Z-285 move. -
Thanks. Still learning the g-code world. Didn't even notice the first line was commented out.
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Thanks. Still learning the g-code world. Didn't even notice the first line was commented out.
No worries. Read and inwardly digest this and you'll become an expert https://duet3d.com/wiki/G-code.
Alternatively bookmark it for easy reference in the future. -
My home all is now working like it is supposed to. And my z offset is working.
