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    During Bed Probe G29

    Scheduled Pinned Locked Moved
    Tuning and tweaking
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    • fcwiltundefined
      fcwilt @airscapes
      last edited by

      @airscapes

      Typically the reading of 1000 indicates the Z probe is triggered, while a reading of 0 indicates the probe is NOT triggered.

      We would need to see the two Z probe configuration commands (M558 and G31) in regards to the inconsistent readings - it may just be a setting issue.

      Frederick

      Printers: A FT-5 with the 713 upgrade bits, a custom MarkForged style, a small Utilmaker style, a small CoreXY from kit and a E3D MS/TC setup. Various hotends. Using Duets (2 and 3) running 3.4.6

      airscapesundefined 1 Reply Last reply Reply Quote 0
      • airscapesundefined
        airscapes @fcwilt
        last edited by

        @fcwilt Thanks for that info, maybe it is just the UI is not fast enough to display that every time or something.
        Here are the parameter strings you requested.
        This probe has been in place for a year I have made other maps and tend to reuse them. This has happened with the failure before complete one other time.

        M558 P9 C"^zprobe.in" H3 F100 T6000 A3 R1.25 S0.01 B0.
        G31 X0 Y-21 Z1.57 P25 ;

        fcwiltundefined 1 Reply Last reply Reply Quote 0
        • fcwiltundefined
          fcwilt @airscapes
          last edited by

          @airscapes said in During Bed Probe G29:

          This probe has been in place for a year I have made other maps and tend to reuse them. This has happened with the failure before complete one other time.

          M558 P9 C"^zprobe.in" H3 F100 T6000 A3 R1.25 S0.01 B0.
          G31 X0 Y-21 Z1.57 P25 ;

          In M558:

          Change the S0.01 to S0.03

          Change the R1.25 to R0

          In G31:

          Change the P25 to P500

          Let us know if those changes help.

          Frederick

          Printers: A FT-5 with the 713 upgrade bits, a custom MarkForged style, a small Utilmaker style, a small CoreXY from kit and a E3D MS/TC setup. Various hotends. Using Duets (2 and 3) running 3.4.6

          airscapesundefined 2 Replies Last reply Reply Quote 0
          • airscapesundefined
            airscapes
            last edited by

            Increased the temp to 110 for an hour and ran another map
            Failed with all kinds of error

            25/2024, 10:16:37 PM Warning: Skipping grid point X=0.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=11.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=22.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=33.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=44.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=55.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=66.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=77.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=88.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=99.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=110.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=121.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=132.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=143.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=154.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=165.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=176.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=187.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=198.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=198.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=187.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=176.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=165.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=154.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=143.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=132.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=121.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=110.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=99.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=88.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=77.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=66.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=55.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=44.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=33.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=22.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=11.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=0.0, Y=246.0 because Z probe cannot reach it
            380 points probed, min error -0.225, max error 0.183, mean 0.004, deviation 0.082
            Height map saved to file 0:/sys/heightmap.csv
            Height map saved to file 0:/sys/110C-Fullbed-ABS-ASA.csv
            1/25/2024, 10:16:37 PM Warning: Skipping grid point X=0.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=11.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=22.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=33.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=44.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=55.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=66.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=77.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=88.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=99.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=110.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=121.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=132.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=143.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=154.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=165.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=176.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=187.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=198.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=198.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=187.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=176.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=165.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=154.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=143.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=132.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=121.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=110.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=99.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=88.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=77.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=66.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=55.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=44.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=33.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=22.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=11.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=0.0, Y=246.0 because Z probe cannot reach it
            380 points probed, min error -0.225, max error 0.183, mean 0.004, deviation 0.082
            Height map saved to file 0:/sys/heightmap.csv
            Height map saved to file 0:/sys/110C-Fullbed-ABS-ASA.csv
            1/25/2024, 10:16:36 PM M98 P"0:/macros/Re-Make-Map-110C-ABS-ASA"
            Warning: Skipping grid point X=0.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=11.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=22.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=33.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=44.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=55.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=66.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=77.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=88.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=99.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=110.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=121.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=132.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=143.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=154.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=165.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=176.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=187.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=198.0, Y=235.0 because Z probe cannot reach it
            Warning: Skipping grid point X=198.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=187.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=176.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=165.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=154.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=143.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=132.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=121.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=110.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=99.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=88.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=77.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=66.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=55.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=44.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=33.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=22.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=11.0, Y=246.0 because Z probe cannot reach it
            Warning: Skipping grid point X=0.0, Y=246.0 because Z probe cannot reach it
            380 points probed, min error -0.225, max error 0.183, mean 0.004, deviation 0.082
            Height map saved to file 0:/sys/heightmap.csv
            1/25/2024, 7:46:35 PM M98 P"0:/macros/Re-Make-100C-Fullbed-ABS-ASA"
            Warning: Skipping grid point X=199.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=188.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=177.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=166.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=155.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=144.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=133.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=122.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=111.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=100.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=89.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=78.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=67.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=56.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=45.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=34.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=23.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=12.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=1.0, Y=239.0 because Z probe cannot reach it
            Warning: Skipping grid point X=1.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=12.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=23.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=34.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=45.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=56.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=67.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=78.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=89.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=100.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=111.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=122.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=133.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=144.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=155.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=166.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=177.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=188.0, Y=250.0 because Z probe cannot reach it
            Warning: Skipping grid point X=199.0, Y=250.0 because Z probe cannot reach it
            399 points probed, min error -0.218, max error 0.187, mean 0.013, deviation 0.079
            Height map saved to file 0:/sys/heightmap.csv
            Height map saved to file 0:/sys/100C-Fullbed-ABS-ASA.csv

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

              @airscapes said in During Bed Probe G29:

              because Z probe cannot reach it

              It didn't fail. It's just telling you that your mesh size has areas that aren't physically reachable by the probe. If you want to get rid of the errors, modify your M557 mesh xy positions to take the probe offset into account.

              Z-Bot CoreXY Build | Thingiverse Profile

              airscapesundefined 1 Reply Last reply Reply Quote 1
              • airscapesundefined
                airscapes @Phaedrux
                last edited by

                @Phaedrux seem odd, as I have never seen that in the past and the following is well within the build plate of 200x250
                Warning: Skipping grid point X=67.0, Y=239.0 because Z probe cannot reach it
                Warning: Skipping grid point X=56.0, Y=239.0 because Z probe cannot reach it

                How can the probe not reach them. Can this be a connection issue or mechanical adjustment in the probe?
                Going to run these again today with a cold bed will post results if different.
                Thanks,
                Doug

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

                  @airscapes your probe offset in Y is -21
                  to probe at Y239, the nozzle needs to be Y260, which is outside your axis limits

                  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

                  airscapesundefined 1 Reply Last reply Reply Quote 0
                  • airscapesundefined
                    airscapes @fcwilt
                    last edited by

                    @fcwilt Thanks, I will look up what I am changing as I do not recall what those do since it was set up over a year ago

                    1 Reply Last reply Reply Quote 0
                    • airscapesundefined
                      airscapes @jay_s_uk
                      last edited by airscapes

                      @jay_s_uk Thanks, Yes, I just positioned the machine to one of those points and I now I get it! 🙂 I will update my macros to only include what the probe can reach, or at least make a note to myself to ignore those next time..

                      1 Reply Last reply Reply Quote 1
                      • airscapesundefined
                        airscapes @fcwilt
                        last edited by

                        @fcwilt said in During Bed Probe G29:

                        @airscapes said in During Bed Probe G29:

                        This probe has been in place for a year I have made other maps and tend to reuse them. This has happened with the failure before complete one other time.

                        M558 P9 C"^zprobe.in" H3 F100 T6000 A3 R1.25 S0.01 B0.
                        G31 X0 Y-21 Z1.57 P25 ;

                        In M558:

                        Change the S0.01 to S0.03

                        Change the R1.25 to R0

                        In G31:

                        Change the P25 to P500

                        Let us know if those changes help.

                        Frederick

                        Can you explain the P25 to P500? I probably found P25 for BLTouch in this forum or in an example. What is it actually doing, the dictionary just says trigger value and does not elaborate?
                        Here is one such post
                        PhaedruxPhaedrux MODERATOR 22 Aug 2023, 16:51
                        You really only need to care about the P value when using an analog probe. Just set it as P25 for the BLtouch.

                        fcwiltundefined 1 Reply Last reply Reply Quote 0
                        • fcwiltundefined
                          fcwilt @airscapes
                          last edited by

                          @airscapes said in During Bed Probe G29:

                          Can you explain the P25 to P500?

                          When triggered my BLTouch probes read 1000. When not triggered they read 0. The setting of P500 is midway between 0 and 1000.

                          It has always worked for me.

                          Frederick

                          Printers: A FT-5 with the 713 upgrade bits, a custom MarkForged style, a small Utilmaker style, a small CoreXY from kit and a E3D MS/TC setup. Various hotends. Using Duets (2 and 3) running 3.4.6

                          airscapesundefined 1 Reply Last reply Reply Quote 0
                          • airscapesundefined
                            airscapes @fcwilt
                            last edited by

                            @fcwilt said in During Bed Probe G29:

                            @airscapes said in During Bed Probe G29:

                            Can you explain the P25 to P500?

                            When triggered my BLTouch probes read 1000. When not triggered they read 0. The setting of P500 is midway between 0 and 1000.

                            It has always worked for me.

                            Frederick

                            Interesting, still reads 1000 and 0.. not but not every time it reads a point. I did run a full bed at 100C with no failure to read. Running 110C now. Thanks!

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

                              The trigger time on a BLtouch is very short and then resets. The DWC display might not always refresh at the right time to catch it.

                              Z-Bot CoreXY Build | Thingiverse Profile

                              1 Reply Last reply Reply Quote 1
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