Z-Probe direction changes

Gabriel

Hello everybody,

I mentioned a strange behaviour.
My coordinate system is set in the center of the working space, because there is the pivot point of my goniometer stage which results in the u and v axis. When I use the command G30 to start a single probe, the movement direction is always in the direction of Z = 0. That means, if the nozzle is right above the goniometer stage at Z = -80, G30 moves the nozzle up. If the nozzle is at Z = 10, it moves down.

Is there any possibility to force the movement to go further minus?
My config.g

Thanks a lot in advance.

Gabriel

dc42

Are you doing a single G30 Z probe without parameters, or some other type of G30 command? Which firmware version?

Gabriel

Hi dc42,

yes, just a single Z probe. It doesn't matter if I try G30 or G30 S-1. Firmware is

Firmware Name: RepRapFirmware for Duet 2 WiFi/Ethernet
Firmware Electronics: Duet Ethernet 1.02 or later
Firmware Version: 2.02(RTOS) (2018-12-24b1)
Web Interface Version: 1.22.6

Thanks for your fast answer,
Gabriel

dc42

Will be fixed in firmware 2.04RC4 which I hope to release later today.

Gabriel

Thank you very much! This is the best support ever!

dc42

@Gabriel said in Z-Probe direction changes:

Thank you very much! This is the best support ever!

You've posted to report a bug that is very simple to fix just as a release is being finalised, that's why. I can't promise the same level of support in future!

PS - possible workaround for now: use M18 Z to disable the Z motor just before doing the plain G30. But this is no good for G30 S-1 because it will leave the Z axis flagged as not homed.

Gabriel

@dc42 Of course, I completely understand. Anyways thanks a lot!

Gabriel

It works now as expected. Perfect!

dc42

@Gabriel said in Z-Probe direction changes:

It works now as expected. Perfect!

Thanks for confirming this