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    Y endstop getting no respect.

    Scheduled Pinned Locked Moved
    Duet Hardware and wiring
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    • zBeebleundefined
      zBeeble
      last edited by

      So … I have a Cartesian printer that I'm setting up with a Duet3dWiFi. Just by happenstance of wiring, X and Z are "forwards" and Y is "backwards"... so I have:

      M569 P0 S1 ; Drive 0 goes forwards
      M569 P1 S0 ; Drive 1 goes backwards
      M569 P2 S1 ; Drive 2 goes forwards

      Then later on I have:

      M574 X1 Y1 Z1 S0 ; Set active low endstops

      ... now I've also tried Y2 there... but the Y axis (the printbed in this instance) slams against the Y stop and then proceeds to grind the belt for awhile. Now... the LED representing the Y stop lights... so what gives? How do I fix this?

      For reference, here's the totality of config.g:

      ; Configuration file for Duet WiFi (firmware version 1.20 or newer)
      ; executed by the firmware on start-up
      ;
      ; generated by RepRapFirmware Configuration Tool on Fri Mar 02 2018 16:36:01 GMT-0500 (EST)

      ; General preferences
      G90 ; Send absolute coordinates...
      M83 ; ...but relative extruder moves
      M555 P0 ; Set firmware compatibility to look like native output

      ; Network
      M550 PMy printer ; Set machine name
      M551 Phr92tkam ; Set password
      M552 S1 ; Enable network
      M587 S"ac.DaveG.ca" P"ac.DaveG.ca" I192.168.221.42 J192.168.221.1 K255.255.255.0 ; Configure access point and IP addresses. You can delete this line once connected
      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 S0 ; Drive 1 goes backwards
      M569 P2 S1 ; Drive 2 goes forwards
      M569 P3 S1 ; Drive 3 goes forwards
      M350 X16 Y16 Z16 E16 I0 ; Configure microstepping without interpolation
      M92 X100 Y100 Z5128 E600 ; Set steps per mm
      M566 X900 Y900 Z12 E120 ; Set maximum instantaneous speed changes (mm/min)
      M203 X30000 Y30000 Z180 E1200 ; Set maximum speeds (mm/min)
      M201 X500 Y20 Z100 E250 ; Set accelerations (mm/s^2)
      M906 X800 Y1200 Z2000 E800 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 X200 Y200 Z200 S0 ; Set axis maxima

      ; Endstops
      M574 X1 Y2 Z1 S0 ; Set active low endstops
      M558 P0 H5 F60 T6000 ; Set Z probe type to switch and the dive height + speeds
      G31 P600 X0 Y0 Z0.5 ; Set Z probe trigger value, offset and trigger height
      M557 X15:185 Y15:185 S20 ; Define mesh grid

      ; Heaters
      M301 H0 S1.00 P10 I0.1 D200 T0.4 W180 B30 ; Use PID on bed heater (may require further tuning)
      M305 P0 T100000 B3950 C0 R4700 ; Set thermistor + ADC parameters for heater 0
      M143 H0 S120 ; Set temperature limit for heater 0 to 120C
      M305 P1 T100000 B4725 C7.060000e-8 R4700 ; Set thermistor + ADC parameters for heater 1
      M143 H1 S280 ; Set temperature limit for heater 1 to 280C

      ; Fans
      M106 P0 B1 S1 I0 F10 H1 T45:140 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned on
      M106 P1 S1 I0 F500 H0:1 T45 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
      M106 P2 S1 I0 F500 H-1 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned off

      ; 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

      ; Miscellaneous
      M501 ; Load saved parameters from non-volatile memory
      T0 ; Select first tool

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      • dc42undefined
        dc42 administrators
        last edited by

        Please test your endstops as described in the commissioning tests at https://duet3d.dozuki.com/Wiki/Step_by_step_guide.

        What type of endstop is it?

        Duet WiFi hardware designer and firmware engineer
        Please do not ask me for Duet support via PM or email, use the forum
        http://www.escher3d.com, https://miscsolutions.wordpress.com

        1 Reply Last reply Reply Quote 0
        • zBeebleundefined
          zBeeble
          last edited by

          OK. I solved that, but I ended up with more confusion.

          For the X, say, -ve X travells towards the endstop. Pressing "home" travels to the endstop and then sets the X position as '0'.

          Y is backwards, but it's configured that way (see above). -ve Y movement moves towards the endstop, but after pressing 'home' for Y, and the bed travelling to the endstop, the Y value is set to 200 … so the bed effectively cannot move (200 is the max Y).

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          • zBeebleundefined
            zBeeble
            last edited by

            NM. Solved this problem. The web config somehow put in a y2 in the endstop list rather than y1. Odd that homing still went in the right direction.

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