Thank you everybody for the helpful options!
I think simplest for my case is the emergency button one, although the explanation that the gcode configuration is actually "real time" opens other ideas (for other requirements) that I need to explore deeper as I gain confidence.
Lowering the Z motor current when I am playing with the configuration is also something that I will follow from now on.
Thank you again!
@Phaedrux I have done some macros to allow moving the bed up and down even without having homed it first.
Maybe it is relevant to say my Z-Probe is piezoelectric, so configuring the sensitivity of the PCB needed to be done in addition to the printer tuning itself.
I used in order to do initial tests while configuring the Z-probe (so I needed to retract the bed to retry before I did an actual homing). I did a crash once (I had my bed too low and then tried to do a Home-X, so the bed went down a bit more), and would like to not repeat the experience anymore!
I am not expecting this to happen during normal printing, but I can tell because my own experience that it can happen while the printer is being tuned/configured (by a novice like me)!!
Is it possible to use Z-Probe device in order to detect Z-MIN of the printer, and a Z-Endstop to detect Z-MAX?
I've read it is not possible to have two endstops (min and max) in the same axis, but I am not sure if the Z-Probe is an exception to this rule.
I am building an Hypercube (CoreXY) design and would like to avoid the bed movement to crash on the bottom side if it lowers too much.
Just limiting the dimensions on the Z-axis does not seem to work before the printer has done initial Z-homing.
thank you!!