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    M558 P1 selects Z probe type 1 = Z probe Mode 1?

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    • Axel-Hundefined
      Axel-H
      last edited by

      in https://duet3d.com/wiki/Connecting_a_Z_probe it is unspecified what the different types of z probe is and it is also compleatly unspecified how to set to the different z probe modes?

      My guess is that the types might refer to the different modes?

      If my understanding is correct then mode (type) 5 is for a regular makerbot type bord on the Z endstop connector and simular?

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      • dc42undefined
        dc42 administrators
        last edited by

        I have amended the working of the text on that wiki page:

        To configure the firmware to recognise the output mode of the Z probe you are using and which pin it is connected to, use the P parameter of the the M558 command in config.g. For example, M558 P1 selects Z probe mode 1.

        Type 5 is suitable for any digital output Z probe that doesn't need or can't handle a strong pullup resistor.

        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

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        • Axel-Hundefined
          Axel-H
          last edited by

          Thank you,

          pot?

          I have got it working if I connect the endstop card on E1 and use P4.

          If I understand the site correctly 1-3 and 5 refer to probes connected to the probe connectors and 4 for end stop on E0, and 6 for E1?
          Form what I can see it is not possible to use the Z end stop connector for probing?

          Given that I use a simple endstop card for probing right now but that I need keep the probe connector free for testing of more advanced probes in the future and that I am planing to use E0 and E1 for fillament monitoring I would prefer to use the Z endstop connector for simple probing if possible.

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          • dc42undefined
            dc42 administrators
            last edited by

            I corrected the typo.

            Currently the Z endstop input can't be used for a Z probe. I'll add this to the firmware wish list.

            What type of Z probe do you have? You may be able to use the Z probe connector.

            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

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            • Axel-Hundefined
              Axel-H
              last edited by

              Thanks 🙂

              At the moment I use a 1.2v makerbot type endstop that are default high and I needed to rewire it slightly to give 0 as default output instead of 1000.

              The last version of the firmware seem to change something so it sees default high end stops as always triggered and I was unable to set it to trigger when it changed from 1000 to 0

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              • dc42undefined
                dc42 administrators
                last edited by

                In recent firmware versions you can use the I1 parameter on the M558 command to change the polarity to active low for all Z probe types. So no need to rewire your endstop.

                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

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                • Axel-Hundefined
                  Axel-H
                  last edited by

                  aha, thank you. I didn't find that piece of information when I was looking, It works well now so I might not change it back right away.

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