Dual X endstop homing

Boulet_Frites · 5 Jul 2020, 08:58

Hi,

I'm very happy to use Duet3D boards for custom machines and i didn't have trouble with the setup of a Duet2 wifi and stalldetection endstops.
My new project is using a Duet Maestro and for this i need to use mecanical endstops and a dual X carriage.

I've got one motor on X and the other one on E0, same for the endstops.

Endstops are connected with two wires :
NC --> Ground
C ---> Stop

In my config.g :

M584 X0:3 Y1 Z2 U3 P3
M569 P0 S0
M569 P1 S1
M569 P2 S1
M569 P3 S0
M574 X1 Y1 Z1 U1 S1

For my homex :

M584 X0 U3
G1 S1 X-605 U-605 F360
G91
G1 S2 X5 U5
G90
G1 S1 X-605 U-605 F360
M584 X0:3

M119 shows me that the endstop works well.
But only the X motor homes, the E0 motor is not moving.
Would you know what is the problem here?

Thank you very much

Etienne

dc42 · 7 May 2020, 09:03

I presume you are using RepRapFirmware 2, because homing using dual endstops is different (easier) in RepRapFirmware 3.

In order to move the U axis when homing, you need to temporarily make the U axis visible. So change your homex.g file to this:

M584 X0 U3 P4
G1 S1 X-605 U-605 F360
G91
G1 S2 X5 U5
G90
G1 S1 X-605 U-605 F360
M584 X0:3 P3

Boulet_Frites · 5 Jul 2020, 10:15

Sorry i didn't mention it :

Firmware Name: RepRapFirmware for Duet 2 Maestro
Firmware Electronics: Duet Maestro 1.0
Firmware Version: 2.03 (2019-06-13b2)
Web Interface Version: 1.22.6

Is Maestro compatible with RepRapFirmware 3 ? i've had trouble to find the latest firmware for my hardware.
Edit : found

I followed you advice and now the U axis is moving for homing but the motor is turning very slowly; not at the same rate than the X motor.

Phaedrux · 7 May 2020, 18:48

Please post your entire config.g

DeltaCon · 8 May 2020, 07:09

@Boulet_Frites said in Dual X endstop homing:

Is Maestro compatible with RepRapFirmware 3 ?

Yes it is, I am running RRF 3.01 (RC11) on a Maestro.

I followed you advice and now the U axis is moving for homing but the motor is turning very slowly; not at the same rate than the X motor.

Check your Steps/mm for the E0 motor, it needs to be the same as your X motor of course.

I am doing the same thing, in RRF3, also on a Maestro, but with a double Y instead. I do not have that working completely either

dc42 · 8 May 2020, 08:19

@DeltaCon said in Dual X endstop homing:

Check your Steps/mm for the E0 motor, it needs to be the same as your X motor of course.

No need, as long as the M92 command comes after the M584 command then it will set the steps/mm for both X motors.

Boulet_Frites · 8 May 2020, 09:40

In order to simplify the resolution of the problem (and maybe help @DeltaCon ); i've upgraded to 3.01 RC11 too.

Behavior of the machine :

X move goes well with the two motors synchronised.
M119 reports good behavior of the endstops.

Homing is not working at all. If i ask for homing X,Y or Z the color of the button on the touchscreen goes from blue to red. Nothing moves.

Here is my config.g :

Colorator 4000
M119
Status
Idle
Mode: FFF
Tool Position
X
0.0
Y
0.0
Z
0.00
U
0.0
Extruder Drives
Drive 0
0.0
Speeds
Requested Speed
0 mm/s
Top Speed
0 mm/s
Sensors
Vin
12.4 V
MCU Temperature
29.6 C
Tools
Extra
Control All
Tool Heater Current Active Standby
Tool 0
T0 - Load Filament n/a n/a
0
0
Temperature Chart
No Data
System Directory
0:/sys/config.g
; CONFIGURATION FILE FOR DUET MAESTRO SELF TEST

;--------------------------------------------------------------------------------
;-------------------------------------NOTE---------------------------------------
;--------------------------------------------------------------------------------
;-- THIS FILE IS FOR FACTORY TESTING ONLY --
;-- --
;-- DO NOT USE THIS CONFIGURATION FILE FOR A 3D PRINTER --
;-- --
;-- --
;-- Use the reprapfirmware configurator to generate a configuration file --
;-- for your printer: --
;-- https://configurator.reprapfirmware.org/ --
;-- --
;--------------------------------------------------------------------------------

; CREATED: 2018.06.21 MJC from Quad / Maestro / MB as baseline
; Edited by tony@duet3d.com 2018.08.28
; --- SECTION: GENERAL PREFERENCES ( ) ---

M555 P2 ; Set output to look like Marlin
G21 ; Work in millimetres
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M584 X0:3 Y1 Z2 U3 P3

; --- SECTION: Z-PROBE & MESH COMPENSATION (Z PROBE SECTION) ---
; --- SECTION: DRIVES (MOVEMENT SECTION) & ENDSTOPS ---

M569 P0 S0
M569 P1 S1
M569 P2 S1
M569 P3 S0

M350 X8 Y8 Z8 U8 I1
M92 X64 Y64 Z64 U8

M906 X600 Y600 Z600 U600 I60 ; Set motor currents (mA) and increase idle current to 60%
M201 X1000 Y1000 Z1000 U1000 ; Accelerations (mm/s^2)
M203 X20000 Y20000 Z20000 U20000 ; Maximum speeds (mm/min)
M566 X1200 Y1200 Z1200 U1200 ; Maximum instant speed changes mm/minute

M574 X1 S1 P"xstop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S1 P"zstop"
M574 U1 S1 P"e0stop" ; configure active-high endstop for low end on Z via pin zstop

; --- SECTION: HEATERS (HEATER & THERMISTOR SECTION) ---

M302 P1 ; Allow Cold extrudes

; Thermistors
M305 P0 T100000 B3950 R2200 H30 L0
M305 P1 T100000 B3950 R2200 H30 L0
M305 P2 T100000 B3950 R2200 H30 L0

M570 S180 ; allow it 180 seconds before gving a heating warning and test hotends wont be tuned.

; Tool definitions
M563 P0 D0 H1 ; Define tool 0
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
M563 P1 D1 H2 ; Define tool 1
G10 P1 S0 R0 ; Set tool 1 operating and standby temperatures

; --- SECTION: FANS ( ) ---
; Disable Fan 1 thermostatic mode
M106 P1 H-1

;Define the 4th fan

; --- SECTION: TOOLS (TOOL DEFINITION SECTION) ---

; --- SECTION: NETWORKS (PROLOGUE & COMMUNCATIONS SECTION) ---

; Network
M550 PColorator 4000 ; Set machine name
M552 P192.168.5.151 S1 ; Enable network and set IP address
M553 P255.255.255.0 ; Set netmask
M554 P192.168.5.1 ; Set gateway
M586 P0 S1 ; Enable HTTP
M918 P1

; --- SECTION: MISCELLANEOUS ---

G92 X0 Y0 Z0
G91

Thank you for your help !

dc42 · 5 Aug 2020, 10:07

As you are now using 3.01-RC11, you don't need to create the U axis. So:

Remove everything to do with U in config.g
Change your M574 X command to: M574 X1 S1 P"xstop+e0stop"
Change homex.g and homeall.g to home the X axis just as if you had only one motor

In M119 and in the Endstops list in DWC, X will show as stopped if either X endstop switch is triggered.

Boulet_Frites · 5 Aug 2020, 13:03

I did whay you said, here is my :

config.g

; CONFIGURATION FILE FOR DUET MAESTRO SELF TEST

;--------------------------------------------------------------------------------
;-------------------------------------NOTE---------------------------------------
;--------------------------------------------------------------------------------
;-- THIS FILE IS FOR FACTORY TESTING ONLY --
;-- --
;-- DO NOT USE THIS CONFIGURATION FILE FOR A 3D PRINTER --
;-- --
;-- --
;-- Use the reprapfirmware configurator to generate a configuration file --
;-- for your printer: --
;-- https://configurator.reprapfirmware.org/ --
;-- --
;--------------------------------------------------------------------------------

; CREATED: 2018.06.21 MJC from Quad / Maestro / MB as baseline
; Edited by tony@duet3d.com 2018.08.28
; --- SECTION: GENERAL PREFERENCES ( ) ---

M555 P2 ; Set output to look like Marlin
G21 ; Work in millimetres
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves
M584 X0:3 Y1 Z2 P3

; --- SECTION: Z-PROBE & MESH COMPENSATION (Z PROBE SECTION) ---
; --- SECTION: DRIVES (MOVEMENT SECTION) & ENDSTOPS ---

M569 P0 S0
M569 P1 S1
M569 P2 S1
M569 P3 S0

M350 X8 Y8 Z8 I1
M92 X64 Y64 Z64

M906 X600 Y600 Z600 I60 ; Set motor currents (mA) and increase idle current to 60%
M201 X1000 Y1000 Z1000 ; Accelerations (mm/s^2)
M203 X20000 Y20000 Z20000 ; Maximum speeds (mm/min)
M566 X1200 Y1200 Z1200 ; Maximum instant speed changes mm/minute

M574 X1 S1 P"xstop+e0stop" ; configure active-high endstop for low end on X via pin xstop
M574 Y1 S1 P"ystop" ; configure active-high endstop for low end on Y via pin ystop
M574 Z1 S1 P"zstop"
; configure active-high endstop for low end on Z via pin zstop