ENDER 4.2.7 firmware, bed traming not working properly, caused by the probe offset

Marlin Firmware Service Bug Reports
1

Ender3-v2-v427-BLTouch-20220111.bin
bed traming, ‘front right’ and ‘back right’ is not working. no response unlikely others center, front left and back left.
it seems happened due to the probe offset of X-axis. if I put this value more than -20, bed tramming is working without any issue, however, cannot leveling front left / back left because no offset provided for the BLTouch.
can you correct this issue, please?

thank you.
Steven

1 Like
2

Correct - there is currently no way to adjust this as per the X / Y offset for the probe.

I recommend you store your probe offset, set them to zero, use those functions, then restore your probe offset.

Anything else will give you incorrect results.

3

I’m experiencing this exact issue with an Ender-3, MicroSwiss DD and Creality 4.2.7 board. Can you help me understand better?

In Firmware Builder my X_MIN_POS is -5 (needed for the MicroSwiss DD or it prints off board). My probe offsets in EEPROM are X (-77), Y (-25) and these are needed to get my CR Touch probing centered.

I think I understand @Steven_Seo needed to set the X probe offset to > -20 in order for Automatic tramming to probe Front-Right or Back-Right.

  • I don’t understand why this doesn’t work with my probe offsets given that G29 probes the exact correct coordinates.
  • Is this a problem in the Configuration.h/Configration_adv.h that your firmware builder is creating or is this a Marlin Firmware issue?
  • You wrote “there is currently no way to adjust this as per the X / Y offset for the probe.” I’m not 100% clear on what this means. Do you mean that Automatic Tramming Wizard uses the X offset value which makes it think that Front Right and Back Right are off the build plate therefore won’t probe? Or do you mean something else?