Still having issues homing

Kskiff7034

Forgot to mention, I've built a D-bot/CoreXY. It's 330 x 330 x 450. My config.g file is below.

G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M555 P1 ; Set firmware compatibility to look like RepRapFirmare

M667 S1 ; Select CoreXY mode

; Network
M550 PMy printer ; Set machine name
M552 S1 ; Enable network
;*** Access point is configured manually via M587
M586 P0 S1 ; Enable HTTP
M586 P1 S0 ; Disable FTP
M586 P2 S0 ; Disable Telnet

; Drives
M569 P0 S1 ; Drive 0 goes forwards
M569 P1 S1 ; Drive 1 goes forwards
M569 P2 S1 ; Drive 2 goes forwards
M569 P3 S1 ; Drive 3 goes forwards
M569 P4 S1 ; Drive 4 goes forwards
M584 X0 Y1 Z2:4 E3 ; Apply custom drive mapping
M350 E16 I0 ; Configure microstepping without interpolation
M350 X16 Y16 Z16 E16 I1 ; Configure microstepping with interpolation
M92 X80 Y80 Z2560 E420:2560 ; Set steps per mm
M566 X900 Y900 Z12 E120:12 ; Set maximum instantaneous speed changes (mm/min)
M203 X6000 Y6000 Z180 E1200:180 ; Set maximum speeds (mm/min)
M201 X500 Y20 Z250 E250:250 ; Set accelerations (mm/s^2)
M906 X800 Y800 Z800 E800:800 I30 ; Set motor currents (mA) and motor idle factor in per cent
M84 S30 ; Set idle timeout

; Axis Limits
M208 X0 Y0 Z0 S1 ; Set axis minima
M208 X330 Y330 Z330 S0 ; Set axis maxima

; Endstops
M574 X1 Y1 Z1 S0 ; Set active low endstops

; Z-Probe
M558 P0 H5 F120 T6000 ; Disable Z probe but set dive height, probe speed and travel speed
M557 X15:315 Y15:315 S20 ; Define mesh grid

; Heaters
M140 H-1 ; Disable heated bed
M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1
M143 H1 S260 ; Set temperature limit for heater 1 to 260C

; 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 H T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
M106 P2 S1 I0 F500 H T45 ; 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 saving after power loss is not enabled

; Custom settings are not configured

Kskiff7034

And here is homez:

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool on Mon Jul 02 2018 21:41:18 GMT-0400 (Eastern Daylight Time)
G91 ; relative positioning
G1 Z5 F6000 S2 ; lift Z relative to current position
G90 ; absolute positioning
G1 X15 Y15 F6000 ; go to first probe point
G30 ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
;G91 ; relative positioning
;G1 Z5 F100 S2 ; lift Z relative to current position
;G90 ; absolute positioning

dc42

You can add M564 H0 to config.g. to avoid the message. However, if that menu pops up then your homing files are set up to home Z using a Z probe instead of an endstop switch, but you have no Z probe configured. I suggest you look at https://duet3d.dozuki.com/Wiki/ConfiguringRepRapFirmwareCartesianPrinter#Section_Homing_Z.

Kskiff7034

I'll try the Homing to a z low end stop tonight. I'm not sure why it'd be configured to use a Z Probe though because I have "No Z Probe" selected in the configurator.

Phaedrux

In that case you can remove the m558 command from the config.

Kskiff7034

@phaedrux Just remove it completely? I see in the config file it says it's disabled.

Kskiff7034

@dc42 One more quick question -- I'm assuming I want to do the min Z endstop as opposed to max, yeah?

Phaedrux

@kskiff7034 said in Still having issues homing:

@phaedrux Just remove it completely? I see in the config file it says it's disabled.

Delete the line or add a ; to comment it out. If you ever add a z probe you will have to add a new line anyway..

The DBot homes to zmin by default where the bed raises up to meet the nozzle at z0 and moves away from the nozzle in z+.

It can be handy to have both zmin and zmax for instance for power loss recovery. But that's neither here nor there.

Kskiff7034

So I removed the M558 from config. I'm trying to follow the link dc42 sent to home z to a min endstop -- can I follow the guide on the Cartesian page? Because there's no information on homing the Z when you go to the coreXY page. It tells you how to do homeall, but the only mention of homing z says, "Z homing section to follow", but then it doesn't follow.

Phaedrux

Yes it's the same as Cartesian.