z-axis inversion

[prolee2008]

Thank you to the author for creating such amazing software! While using it, I noticed that the Z-axis movement direction for pen lifting and lowering is reversed. I’d like to ask: Is it possible to invert the Z-axis movement direction through software settings without modifying the machine's firmware configuration?

[prolee2008]

I also tried swapping the Z-axis pen lift height and pen lower height, but the software requires the lower position to be less than or equal to 0. So I really don’t know how to proceed. I’d appreciate your guidance when you have time.

[svenhb]

Official Z axis direction:
Positive Z-axis movement usually moves the tool away from the workpiece (upward), while negative Z-axis movement moves the tool towards the workpiece (downward).

Better switch your machines Z axis direction via $3: https://github.com/gnea/grbl/wiki/Grbl-v1.1-Configuration#3--direction-port-invert-mask

[prolee2008]

Thank you for your prompt and patient explanation.

[Hostaler]

Here the list.