X-Axis Endstop min and max



  • Hello,

    is it possible to define an extra endstop for x-axis max position?

    I have a dual extruder parking system and I want to use a maximum endstop wich is the exact parking position for the second extruder.

    I have a printing area of 290mm and the parking position for the second extruder is 310mm so if I make a toolchange I want to go to positive direction with the x axis until the max endstop hits.

    Thanks for your help,

    danny_v1


  • administrators

    It sounds to me that you have an IDEX (independent dual X carriage) machine. Have you read https://duet3d.dozuki.com/Wiki/ConfiguringMultipleIndependentXcarriagesCartesian ?



  • Hello thank you for your help,

    I have 1 carriage wich is piking up the extruders from their parking position, something like this.
    [link text]https://www.thingiverse.com/thing:1446731(link url)

    So should I set it up as an IDEX machine?

    danny_v1


  • administrators

    It's probably simpler not to set it up as an IDEX. Until we support remapping endstop inputs (which is planned soon), I think the easiest option will be to set up your X max endstop switch as if it is an alternate Z probe. Then you can use the M574 command to select endstop type = Z probe when you want to home to max X.

    Alternatively, can you use stall detection for the max endstop?



  • @dc42 said in X-Axis Endstop min and max:

    Ok, I have read the document about the IDEX configuration.
    I think the setup would work fine for me, but how does it work while printing or to slice the G-code then I have to tell the printer if tool0 is connected it has to move the x-axis and if tool1 is connected then it has to move the u-axis. How does this work? Or does the firmware do this automatically?

    danny_v1


  • administrators

    The firmware does the mapping from X to U automatically if you set up X axis mapping in your M563 tool definition command. However, I don't think you need to use a U axis. See my previous reply.



  • Ok thank you.

    I will test both methods because sometimes my offset for the x-axis is not correct anymore, and I don't know why. I set it up, then I print something and maybe some prints later the offset is faulty.

    Maybe the adjustment with a second x-axis would be easier or work better. I will test it.

    When does the firmware exactly switch from x to u axis? Right at the moment, the second tool is readily connected?

    Thank you very much for your help.


  • administrators

    @danny_v1 said in X-Axis Endstop min and max:

    When does the firmware exactly switch from x to u axis? Right at the moment, the second tool is readily connected?

    When you use a T command to select the second tool.


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