G30 S-1 Not Working
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Trying to finalize my 1.17c setup and going through the steps in doing the mesh setup. When I give the G30 S-1 command, the bed moves away from the nozzle and then I get an error that the Z probe wasn't triggered. I am using a BL Touch sensor and it is working for homing and with G32. I'm guessing I have something wrong in the config, but not sure what. Here is my config.g file (minus the network stuff)
[c]G21 ; Work in millimetres
G90 ; Send absolute coordinates…
M83 ; ...but relative extruder moves; Machine configuration
M569 P0 S1 ; Drive 0 goes forwards (change to S0 to reverse it)
M569 P1 S0 ; Drive 1 goes backwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S0 ; Drive 3 goes backwards
M569 P4 S1 ; Drive 4 goes forwardsM584 X0 Y1 Z2:4 E3:5:6 ; Add E1 as a second drive motor for the Z axis
; If you use an end stop switch for Z homing, change Z0 to Z1 in the following line,
; and see also M558 command later in this file
M574 X1 Y1 Z0 S0 ; set end stop configuration (X and Y are low end stops active high)
M667 S1 ; set CoreXY mode
M906 X1000 Y1000 Z1100 E600 ; Set motor currents (ma)
M201 X3000 Y3000 Z100 E4000 ; Accelerations (mm/s^2)
M203 X3000 Y3000 Z400 E3600 ; Maximum speeds (mm/min)
M566 X600 Y600 Z30 E20 ; Maximum jerk speeds mm/minute
M208 X323 Y201 Z345 ; set axis maximum (adjust to suit your machine)
M208 X-8 Y0 Z0 S1 ; set axis minimum (adjust to make X=0 and Y=0 the edges of the bed)M92 X100.86 Y100.86 Z389.8 ; set axis steps/mm - Direct
; Z probe
M558 P4 X0 Y0 Z1 H5 F100 T2000 ; Switch for Z probe.
; Move 5mm between probes.
; Probe speed 100mm/min.
; Travel speed 2000mm/min.G31 X50 Y36 Z1.65 P5 ; Set the probe height and threshold (put your own values here)
; Probe is to the right and behind nozzle; Configure pins for the BL Touch
M307 H5 A-1 C-1 D-1 ; Using heater 5
M280 P5 S90 I1 ; Make sure it starts retracted.; Tool definition
M563 P0 D0 H1 ; Define tool 0 - Using drive 0 (Extruder 0) and heater 1
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
M92 E417 ; Set extruder steps per mm - Titan Extruder; Thermistors and heaters
; You can also use S and B parameters to define the parameters of the thermistors you are using
M305 P0 T100000 R4700 B4540 ; Bed
M305 P1 T100000 R4700 B4700 ; Hot End; Bed M307 values generated from running M307 H0 D30 then M303 H0 P0.2 S90 and reading the results with M307 H0
;Heater 0 model: gain 312.8, time constant 651.2, dead time 11.8, max PWM 1.00, in use: yes, mode: PID
M307 H0 A312.8 C651.2 D11.8 B0; Hot End M307 values generated from running M303 H1 P0.3 S200 and reading the results with M307 H1
;Heater 1 model: gain 464.0, time constant 262.4, dead time 6.5, max PWM 1.00, in use: yes, mode: PID
M307 H1 A464.0 C262.4 D6.5 B0
M570 S180;*** If you are using axis compensation, put the figures in the following command
M556 S78 X0 Y0 Z0 ; Axis compensation hereM106 P1 S0
T0[/c]
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Have you got your z motor/s turning the wrong way, so the z axis descends when it should raise?
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Z axis is working fine. I can do the G32 bed.g leveling and printing with no problems. It is only the G30 command that is giving me problems.
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Make sure your config.override file isn't messing with the P5 value for G31. I had that problem.
Jeff
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+1 for that I've had a few issues lately with config_override.g causing odd behaviours, I delete it periodically and copy the values back into config.g and re-calibrate.
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I do not have an config.override.g that I am aware of but G30 S-1 is also causing me problems.
Every time I use the paper test to set G92 Z0 and then raise the head 5mm
G30 S-1 gives confusing information
e.g. top right hand display shows Z= 2.92 but G-code console reports "Stopped at height of 1.876mm"
Auto calibrate will stabilise at 0.015 but G29 bed levelling will then show a map with every point shown as negative!?
homedelta.g looks fine as I have 250mm upright members on my "Big Delta" variant. (see below)
Any none any ideas?; Homing file for RepRapFirmware on Kossel
G91 ;use relative positioning
G1 S1 X250 Y250 Z250 F2500 ;move carriage up to ENDSTOP,
G1 S2 X-3 Y-3 Z-3 ; move all carriages down 3mm
G1 S1 X4 Y4 Z4 F250 ; move slowly up 4mm, stop at the endstops
G1 Z-5 F2000 ; down a few mm so that we can centre the head
G90 ; back to absolute positioning
G1 X0 Y0 F2000 ; centre the head and set a reasonable feed rate -
If the trigger height of the BLTouch is greater than 5mm then you will need to raise the nozzle higher than 5mm before sending G30 S-1. Try 10mm or 20mm.
The displayed trigger height and the Z height won't match if bed compensation is active, so it's best to measure the trigger height with bed compensation disabled.
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thanks .
Also just realised my homealldelta.g was rubbish, as my upright member is 750mm not 250mm
(must take it with more water in future) -
Dropping Z to 10 before the G30 fixed it.
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Well, while I did get it to work a couple times, when I went back and performed the steps here https://duet3d.com/wiki/Using_mesh_bed_compensation, the bed only moves away from the nozzle. I tried Z at 5, 10,15, and 20, all with the same results.
EDIT: I restarted the printer and homed all axis. I then moved Z to 10, deployed the probe, and tried G30 S-1 again. This time it worked. So one of those commands in the steps is causing the issue. Will see if I can figure out which one.
EDIT 2: It seems the problem is with the M208 Z-3 command. This is setting the maximum Z travel to -3. I believe the command should be M208 Z-3 S1 to change the minimum Z travel.
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I'm glad you worked it out.
