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    Solved: Setting Z offset for T1

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    • RajaaKahelundefined
      RajaaKahel @zerspaner_gerd
      last edited by

      @zerspaner_gerd My problem is that Duet is not applying the offset I want for T1. It's ignoring it. Through G10 in config.g and through any other command anywhere else.
      Also it's acting weird if you read my last comment.

      zerspaner_gerdundefined 1 Reply Last reply Reply Quote 0
      • zerspaner_gerdundefined
        zerspaner_gerd @RajaaKahel
        last edited by

        @rajaakahel For me, the z-offset works, why should not it work for you?

        Share your gcode, maybe I can find an explanation!

        Which firmware version do you use?

        Board: Duet WiFi 1.03 | Firmware Version: 3.1.1 | WiFi Server Version: 1.23 | Web Interface Version: 3.1.1

        RajaaKahelundefined 1 Reply Last reply Reply Quote 0
        • RajaaKahelundefined
          RajaaKahel @zerspaner_gerd
          last edited by

          @zerspaner_gerd 0_1535130513803_8.gcode

          Macros:
          https://drive.google.com/open?id=1Nwte-EtKEzL_ogCqJp7PMQ2qsLK7RBkM

          Configurations:
          https://drive.google.com/open?id=1q-h8eojJ91CQwK2p5YhWKuQaQph0sQ_T

          Here's everything.. I'd appreciate it if you or anyone could find anything!

          1 Reply Last reply Reply Quote 0
          • zerspaner_gerdundefined
            zerspaner_gerd
            last edited by

            I have to give up, Sorry.

            I find no big differences to my config.g.
            The gcode is already very different but he should not make these problems!

            Maybe a try, copy your tool Macro directly into the Duet Tool Macro, so that without M98 (subbrogram)

            Board: Duet WiFi 1.03 | Firmware Version: 3.1.1 | WiFi Server Version: 1.23 | Web Interface Version: 3.1.1

            1 Reply Last reply Reply Quote 0
            • dc42undefined
              dc42 administrators
              last edited by dc42

              @RajaaKahel, if the tool 1 nozzle is 0.85mm lower than tool 0 then I think you need Z-0.85 in the G10 P1 command, not Z0.85.

              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

              RajaaKahelundefined 2 Replies Last reply Reply Quote 0
              • RajaaKahelundefined
                RajaaKahel @dc42
                last edited by

                @dc42 Tool 1 nozzle is actually longer than Tool 0 nozzle by 0.85mm.
                I updated to:
                Firmware Version: 2.02beta1(RTOS) (2018-08-12b5)
                WiFi Server Version: 1.21RC4(08b3)
                Web Interface Version: 1.22

                Nothing solved.

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                • dc42undefined
                  dc42 administrators
                  last edited by dc42

                  @rajaakahel said in Setting Z offset for T1:

                  @dc42 Tool 1 nozzle is actually longer than Tool 0 nozzle by 0.85mm.

                  So do you mean the Tool 1 nozzle is 0.85mm lower than tool 0, or higher?

                  Where two tools have different nozzle heights, in the tool change files (probably the tpre file) you will need to raise Z so that when you bring in the tool with the lower nozzle after using the other one, its nozzle will be clear of the print. Use command G1 R2 Z0 at or near the end of the tpost file to put it at the right height before continuing the print.

                  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

                  RajaaKahelundefined 2 Replies Last reply Reply Quote 0
                  • RajaaKahelundefined
                    RajaaKahel @dc42
                    last edited by

                    @dc42 during the last test:
                    "I tried again with 50mm Z offset for T1"
                    Something very strange happened!
                    First T0 was printing, then the tool changed to T1 (nothing happened, no Z offset) but then when the tool changed back to T0 the bed moved by about 50mm down and went back to continue printing.
                    After that and before that it didn't move down by 50mm at all.

                    1 Reply Last reply Reply Quote 0
                    • RajaaKahelundefined
                      RajaaKahel @dc42
                      last edited by

                      @dc42 T1 is higher than T0. I tried with many gcommands to raise the bed, but they didn't work. I'll try now with G1 R2 Z50

                      1 Reply Last reply Reply Quote 0
                      • RajaaKahelundefined
                        RajaaKahel @dc42
                        last edited by RajaaKahel

                        @dc42
                        Ok now the bed is moving down by the value I entered (50mm) Before T1 is activated but it goes back to 0.2mm (the layer height) after T1 is activated. It should go to 50.2mm after T1 is selected and stay there to print. (So now the Z offset is taken into account only during tool change).

                        Thank you for your time, we are getting closer 🙂

                        ; tfree1.g
                        ; called when tool 1 is freed
                        G1 R2 Z-50
                        M98 P/macros/parkT1

                        ; tpre1.g
                        ; called before tool 1 is selected

                        G1 R2 Z50

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                        • RajaaKahelundefined
                          RajaaKahel
                          last edited by

                          I gave up on this. So much time for nothing. Sometimes it works, sometimes it's not. even tho same commands are used and after rebooting and homing. And the most important is in config.g
                          The z offset doesn't work. (G10 P1 X0 Y0 Z0.85)

                          I'll have to redesign the tool mounts to be adjustable mechanically instead or move back to Marlin..

                          1 Reply Last reply Reply Quote 0
                          • dc42undefined
                            dc42 administrators
                            last edited by

                            I'll look into this when I get time. However, E3D uses Duets to control their tool changers and they haven't reported any similar problems.

                            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

                            RajaaKahelundefined 1 Reply Last reply Reply Quote 0
                            • RajaaKahelundefined
                              RajaaKahel
                              last edited by

                              I appreciate that! 🙂

                              1 Reply Last reply Reply Quote 0
                              • RajaaKahelundefined
                                RajaaKahel @dc42
                                last edited by

                                @dc42
                                Here's a short video I recorded for you so you can see what actually is happening and maybe it makes it easier to solve the problem.
                                I don't have any offset commands set anywhere else other than what you see in config.g.
                                https://www.youtube.com/watch?v=MuGbiBkKNUI

                                zerspaner_gerdundefined 1 Reply Last reply Reply Quote 0
                                • zerspaner_gerdundefined
                                  zerspaner_gerd @RajaaKahel
                                  last edited by

                                  @rajaakahel
                                  Try this macro, and parts of what happens.

                                  G10 P0 S0 R0
                                  G10 P1 S0 R0
                                  G28
                                  T0
                                  G0 X100 Y100 Z50
                                  G4 S5
                                  M291 P"X100 Y100 Z50 with T0" S2 T0
                                  T1
                                  G4 S5
                                  M291 P"T1 active" S2 T0
                                  G0 X100 Y100 Z50
                                  G4 S5
                                  M291 P"X100 Y100 Z50 with T1" S2 T0
                                  
                                  T-1
                                  

                                  Board: Duet WiFi 1.03 | Firmware Version: 3.1.1 | WiFi Server Version: 1.23 | Web Interface Version: 3.1.1

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                                  • zerspaner_gerdundefined
                                    zerspaner_gerd
                                    last edited by zerspaner_gerd

                                    Just tested with mine,

                                    You have to do 30 negative (just to test)

                                    At positive 30 he wants to drive 29.8mm minus, but this would require the bed to be driven 29.8mm higher that does not make the Duet.
                                    At T0 Z0 position, it is over

                                    Board: Duet WiFi 1.03 | Firmware Version: 3.1.1 | WiFi Server Version: 1.23 | Web Interface Version: 3.1.1

                                    RajaaKahelundefined 2 Replies Last reply Reply Quote 0
                                    • RajaaKahelundefined
                                      RajaaKahel @zerspaner_gerd
                                      last edited by

                                      @zerspaner_gerd Thank you, I will try with negative value and see if it works

                                      1 Reply Last reply Reply Quote 0
                                      • RajaaKahelundefined
                                        RajaaKahel @zerspaner_gerd
                                        last edited by

                                        @zerspaner_gerd
                                        Thank you sir! That's it! in order to move the bed away from the nozzle, the value must be negative not positive!
                                        ; 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
                                        M563 P1 D1 H2 ; Define tool 1
                                        G10 P1 X0 Y0 Z-30 ; Set tool 1 axis offsets
                                        G10 P1 R0 S0

                                        1 Reply Last reply Reply Quote 1
                                        • dc42undefined
                                          dc42 administrators
                                          last edited by

                                          Just to be clear, the XYZ parameters in the G10 commands are the offsets of the tip of the nozzle relative to the head reference point. You can choose the head reference point to be wherever you like, but the G10 offsets, G31 offsets for the Z probe and M208 limits must all be specified in terms of the head reference point.

                                          It's probably safest to choose the head reference point Z position to be the lowest nozzle you have (or slightly lower), so that the Z values in G10 commands for other tools are all positive.

                                          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 1
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