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CoreXY extra endstop on the Z

Posted by Dunston-UK 
CoreXY extra endstop on the Z
September 04, 2019 06:25PM
Tronxy x5 330 x 300 x 400
DuetWiFi
BLTouch V1

HI
I want to use an extra endstop on the Z alongside the BLTouch, to stop the bed hitting the top of the steppers when it moves down. I have it working correctly for the homing using the BLT, but I can't work out how to do the extra endstop, I know it has to be on the spare extruder on the DuetWiFi, any help on a sample config would be great. I have read the doku on the Duet website but I have either missed it or misunderstood it.

Thanks
Re: CoreXY extra endstop on the Z
September 05, 2019 05:13AM
Assuming the BLTouch is connected to the Z probe input, then you can still connect your extra switch to the Z endstop input.

How do you want to use the switch: to home to max Z (bed all the way down), or to cause an emergency stop when it is triggered?



Large delta printer [miscsolutions.wordpress.com], Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
Re: CoreXY extra endstop on the Z
September 09, 2019 10:00PM
Hi dc42

I wanted it to be for the home to max ie: when the bed is all the way down.

My BLTouch is connected as the Z probe.

; Endstops
M574 X1 Y1 S0 ; Set active high endstops
; Z-Probe
M574 Z1 S2 ; Set endstops controlled by probe
M558 P9 H5 F120 T6000 X0 Y0 Z1 ; Set Z probe type to bltouch and the dive height + speeds
G31 P500 X0 Y15 Z2.5 ; Set Z probe trigger value, offset and trigger height
M557 X15:300 Y15:300 S30 ; Define mesh grid
M307 H3 A-1 C-1 D-1 ; Disable heater on PWM channel for BLTouch



The M574 is set to Z1 though what would I have to change there.

Quote
dc42
Assuming the BLTouch is connected to the Z probe input, then you can still connect your extra switch to the Z endstop input.

How do you want to use the switch: to home to max Z (bed all the way down), or to cause an emergency stop when it is triggered?

Edited 1 time(s). Last edit at 09/09/2019 10:04PM by Dunston-UK.
Re: CoreXY extra endstop on the Z
September 10, 2019 03:30AM
Use M574 Z2 S1 (or S0 if your endstop is active high or an NO switch) and search the Duet3D wiki page for "homing z".

Edited 1 time(s). Last edit at 09/10/2019 03:31AM by dc42.



Large delta printer [miscsolutions.wordpress.com], Robotdigg SCARA printer, Crane Quad and Ormerod

Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].
Re: CoreXY extra endstop on the Z
September 10, 2019 03:46AM
Thank you dc42
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