Dual Z, Dual End stop issue

[hiren]

Hi,

I am having a problem with homing my two independent stepper z-axis with their relevant end stops.

I am using the two end-stops to ensure the bed is mechanically level before using a z IR probe to take out any other bed warp issues

The expected behaviour is that when homing, both steppers home (z & u axis), until their respective end-stop is activated - ensuring a level home.

At the moment, both steppers home, until both the Z and U end stop's are triggers, however, trigging the U axis endstop does nothing to the U axis stepper, however triggering the Z axis one stops the Z axis stepper as expected. Stopping both U & Z axis end stops stop both axis.

could you kindly check my config.g and homez.g to make sure i am not doing any thing daft?

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet WiFi 1.0 or 1.01
Firmware Version: 1.21 (2018-03-21)
WiFi Server Version: 1.21
Web Interface Version: 1.21

Config.g

; Communication and general
M111 S0 ; Debug off
M550 PHyperCube ; Machine name and Netbios name (can be anything you like)
;*** If you have more than one Duet on your network, they must all have different MAC addresses, so change the last digits
M540 P0xBE:0xEF:0xDE:0xAD:0xFE:0xED ; MAC Address
;*** Wifi Networking
M552 S1 ; Enable WiFi. Disabled for setup and testing. Enable once set up on your network.

M555 P2 ; Set output to look like Marlin
M575 P1 B57600 S1 ; Comms parameters for PanelDue

G21 ; Work in millimetres
G90 ; Send absolute coordinates...
M83 ; ...but relative extruder moves

M584 X0 Y1 Z2:4 U4 E3

; Axis and motor configuration
M569 P0 S1
M569 P1 S1
M569 P2 S0
M569 P3 S1
M569 P4 S0

M574 X1 Y1 Z2 U2 S1 ; set endstop configuration (all endstops at high end, active high)

M667 S1 ; switch to CoreXY mode

M92 X80 Y80 Z415 U415 ; Set axis steps/mm 395

M208 X170 Y177 Z193 U193 ; set axis maxima (adjust to suit your machine)
M208 X-10 Y0 Z0 U0 S1 ; set axis minima (adjust to make X=0 and Y=0 the edges of the bed)

M350 X16 Y16 Z16 E16 I1 Z16 U16 ; Set 16x microstepping with interpolation

M906 X800 Y800 Z1000 E800 I60 Z1000 U1000 ; Set motor currents (mA) and increase idle current to 60%
M201 X800 Y800 Z20 E1000 Z20 U20 ; Accelerations (mm/s^2)
M203 X15000 Y15000 Z2000 E3600 Z2000 U2000 ; Maximum speeds (mm/min)
M566 X600 Y600 Z300 E1200 Z300 U300 ; Maximum instant speed changes mm/minute Z1200 E1200

; Thermistors
M305 P0 T100000 B3950 R4700 H-50 L0 ; Put your own H and/or L values here to set the bed thermistor ADC correction
M305 P1 T100000 C7.08e-8 R4700 H0 L0 ; Put your own H and/or L values here to set the first nozzle thermistor ADC correction
M305 P2 T100000 B3974 R4700 H30 L0 ; Put your own H and/or L values here to set the second nozzle thermistor ADC correction
M570 S180 ; Hot end may be a little slow to heat up so allow it 180 seconds
M143 S290 ; Set maximum hotend temperature to 290C

; Fans
M106 P1 H-1 ; disable thermostatic mode for fan 1
M106 P1 S0;
M106 P2 H1 T50;

; Tool definitions
M563 P0 D0 H1 ; Define tool 0
G10 P0 S0 R0 ; Set tool 0 operating and standby temperatures
;*** If you have a single-nozzle build, comment the next 2 lines
;M563 P1 D1 H2 ; Define tool 1
;G10 P1 S0 R0 ; Set tool 1 operating and standby temperatures
M92 E403.45 ; Set extruder steps per mm

; Z probe and compensation definition
;*** If you have a switch instead of an IR probe, change P1 to P4 in the following M558 command
M558 P1 X0 Y0 Z0 F500 T5000 H10 ; Z probe is an IR probe and is not used for homing any axes
G31 X0 Y0 Z2.80 P500 ; Set the zprobe height and threshold (put your own values here) 3.08

; Grid levelling
M557 X20:145 Y20:130 S20 ;

;*** If you are using axis compensation, put the figures in the following command
;M556 S78 X0 Y0 Z0 ; Axis compensation here

;M208 S1 Z0.0 ; set minimum Z
;

; Finalization --------------------------------------------------------
M18 ; Disable stepper motors
T0 ; select first hot end

homez.g

M400 ; make sure everything has stopped before we make changes
G91 ; use relative positioning
M574 Z2 U2 S1
G1 S1 Z300 U300 F1000; move down 300mm, stopping at the endstop
M400 ; make sure everything has stopped before we reset the motor currents

[dc42]

Make sure you have connected the U endstop switch to the E0 (not E1) endstop input, and test it using the Machine Properties page of DWC where it will show up as endstop 3.