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                                            Stephen

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

It doesn't _look_ like the first probe should be any different. https://github.com/MarlinFirmware/Marlin/blob/ef3f484d3ca620272f849b913851541b54b51c09/Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp#L766-L773 https://github.com/MarlinFirmware/Marlin/blob/ef3f484d3ca620272f849b913851541b54b51c09/Marlin/src/feature/bedlevel/ubl/ubl_G29.cpp#L794-L805 I may have to check the behavior of the first probe again. Perhaps I was distracted and...

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

I'm closing this because I'm 90% sure the problem is my (hypersensitive) inductive probe. Variables that change the trigger point of the inductive probe are bed temp, (probably) chamber temp,...

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

I'm now running a CR touch (optical sensor) and getting the same issue. So looks like the 10% chance wins. The bed has soaked for over 30minutes so temperature is...

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

I like to be able to move Z slightly into the negative to that I can manually probe the bed if the z-offset is wrong. The bug is that leveling...

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

Looks like this is a result of sk8board's issue being ignored #23434.

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

@sk8board: You are correct that it is a bug. The manual states "Set the XYZ distance from the nozzle to the probe trigger-point." https://marlinfw.org/docs/gcode/M851.html A workaround is to set MANUAL_Z_HOME_POS...

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

The relevant code appears to be here: https://github.com/MarlinFirmware/Marlin/blob/8d3142911c017b542f1b55e9d2c09b68beacadd9/Marlin/src/inc/Conditionals_post.h#L316 As per @thinkyhead https://github.com/MarlinFirmware/Marlin/issues/23434#issuecomment-1105336006 A possible fix would be `#define Z_HOME_POS TERN(Z_HOME_TO_MIN, 0, Z_MAX_POS)`

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

yeah, still active. And narno2202's mention was a typo on their part.

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

> This issue has had no activity in the last 60 days. Please add a reply if you want to keep this issue active, otherwise it will be automatically closed...

[BUG] Z_MIN_POS is declared to be a travel limit but is instead used as Z0. In consequence, (a) probe z offset changes with Z_MIN_POS (b) bed leveling does not work.

still On Thu, Nov 2, 2023, 8:39 PM github-actions[bot] ***@***.***> wrote: > This issue has had no activity in the last 60 days. Please add a reply if > you...