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    RRF3.2 request to enable G43 & G44 Tool height offset

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    • EducatingSavvasundefined
      EducatingSavvas @jay_s_uk
      last edited by

      @jay_s_uk Can I ask what firmware version you are using. I'm following your workflow but having to make random changes. I'm using RRF 3.2 beta 2.

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      • jay_s_ukundefined
        jay_s_uk
        last edited by

        I'm also running 3.2beta3.2

        Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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        • EducatingSavvasundefined
          EducatingSavvas
          last edited by

          I can confirm I've been able to create macros to set the wasteboard and tool length. My wasteboard setting macro is:

          M291 P"Jog spindle until tool tip touches surface of waste board." R"Set Waste Board" S3 X1 Y1 Z1 ; jog to wasteboard
          G10 L2 P9 Z{move.axes[2].machinePosition}		; save coordinate to G59.3 WC
          G10 L2 P2 Z{move.axes[2].workplaceOffsets[8]} – {move.axes[2].workplaceOffsets[7]}	; Subtract G59.3 from G59.2 and set offset in G55
          M400							; wait for last command to end
          M500							; store to memory
          G55							; swap to G55 WC
          

          and stationary tool length setting macro:

          G55				; return to G55 WC
          G10 P1 X0 Y0 Z0			; reset axis tool offset
          M291 P"Press Ok to peform probe cycle" R"Warning" S3
          G30 S-1	K0			; begin probing movement
          G91				; incremental movement
          G1 F500 Z3			; move up 3mm
          G90				; absolute movement
          G30 S-1	K0 			; begin probing movement
          M400						; wait for current move to finish
          G10 L2 P8 Z{move.axes[2].machinePosition}		; store probe ocaiton to G59.2 P8 
          G10 L2 P2 Z{move.axes[2].workplaceOffsets[8]} – {move.axes[2].workplaceOffsets[7]}	; Subtract G59.3 from G59.2
          M500			; store to memory
          G53 G0 Z-10		; move to safe z position
          

          I use G54 to mirror the G53 machine position - so work in G55. I use G59.3 to set the wasteboard, and G59.2 for stationary touch probe. for set Thank @jay_s_uk for pointing me in the right direction.

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          • tom33undefined
            tom33 @jay_s_uk
            last edited by

            @jay_s_uk Hi, thanks for sharing this macro. When you write "G10 L2 Z" which system coordinate will change the G53 ? Because there is no P parameters
            Thanks,

            jay_s_ukundefined 1 Reply Last reply Reply Quote 0
            • jay_s_ukundefined
              jay_s_uk @tom33
              last edited by

              @tom33 I don't use G53 in my probing macros. I've only used it in the context of tool changing. But, it uses the machine coordinates as a base (so from the machine 0,0 position) and not workplace coordinates

              Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

              tom33undefined 1 Reply Last reply Reply Quote 1
              • tom33undefined
                tom33 @jay_s_uk
                last edited by

                @jay_s_uk ok so like that there is no a G54/G55 for change the work coordinate system at the begining of a gcode ?

                jay_s_ukundefined 1 Reply Last reply Reply Quote 0
                • jay_s_ukundefined
                  jay_s_uk @tom33
                  last edited by

                  @tom33 I believe setting the system in CNC mode (M453) automatically puts the machine in G54

                  Owns various duet boards and is the main wiki maintainer for the Teamgloomy LPC/STM32 port of RRF. Assume I'm running whatever the latest beta/stable build is

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                  • chiefmonkeyundefined
                    chiefmonkey
                    last edited by

                    Guys this seems to be a great work around for the limitation on variables, as from what I can tell you are using the work offsets of non used coordinate systems to store the values from your probing, and then performing the math on them to get the result you desire.

                    The only syntax that I am having a hard time following is where do the "move.axes[].machinePosition" and "move.axes[].workplaceOffsets[]" come from. I assume they are calling something at the firmware level, but it seems documentation on this is limited.

                    I have seen other threads where people are using these meta commands, but finding documentation on them is rather limited. I've gone so far as to dig into linuxCNC as it appears some of this work is derived from there. Any suggestions on where to learn more on the meta command structure would be greatly appreciated.

                    Phaedruxundefined 1 Reply Last reply Reply Quote 0
                    • Phaedruxundefined
                      Phaedrux Moderator @chiefmonkey
                      last edited by

                      @chiefmonkey https://duet3d.dozuki.com/Wiki/GCode_Meta_Commands

                      Have you seen this? Actual variables are now available as well.

                      Z-Bot CoreXY Build | Thingiverse Profile

                      chiefmonkeyundefined 1 Reply Last reply Reply Quote 1
                      • chiefmonkeyundefined
                        chiefmonkey @Phaedrux
                        last edited by

                        @phaedrux said in RRF3.2 request to enable G43 & G44 Tool height offset:

                        https://duet3d.dozuki.com/Wiki/GCode_Meta_Commands

                        I have seen that, we are a bunch of mechanical oriented guys in our group, so programming is taking us quite a while, so much different then C that I used to use.

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