X Axis endstop issue.

  • I'm in the process of configuring my Duet 2 wifi and I'm running into X axis endstop issue. The endstop on the axis is activated even when the switch is not connected. I don't have any issue with the Y or Z axis endstop. The endstops are set in the config file with the following statement:

    ; Endstops
    M574 X1 Y1 Z1 S1 ; set active high endstops

    Y and Z work fine but not X.

    has anyone seen this issue before?
    === Diagnostics ===
    RepRapFirmware for Duet 2 WiFi/Ethernet version 2.05.1 running on Duet WiFi 1.02 or later
    Board ID: 08DGM-9T6BU-FG3SD-6J9F4-3S86Q-KAMVF

  • @dreado
    when you say “The switch is not connected”, do you mean there is nothing connected to the board, or there is wiring connected but not the switch?
    The most obvious source of the problem is a short.
    If there’s no wiring at all and not stray strands of wire from an adjacent cable then check if the pin is inverted in config.

  • @OwenD
    Thanks for the replying. on the Machine properties page, it shows the endstop hit "yes" for x axis without any wire connection to x-endstop. I've checked to physical short and there is none on the pin. With the x-endstop connected the value "yes" always stays the same high.. I measures the x-stop pin and it's value is 3.3V. So it look like the value is stuck high and does not get pulled down when engaged..

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