Wrong values shown for M92 (and other?) in DWC3.3.b2

[o_lampe]

For a test print I change the extruder M92 values to zero. I checked it in the console and they showed E1.000:1.000 instead.
The extruders didn't move, so it's just a cosmetic bug in DWC?

[droftarts]

@o_lampe I think 1 is the lowest value you can use. If you set 0, and send Gcode to move, it would take an infinite amount of time to complete that move. If you want to do an air print, what I usually do is comment out temperature settings in Gcode, remove filament from extruder, and send M302 P1 to allow cold extrusion. The extruder will work at normal speed, but with no heating or extrusion. Alternatively, if you don’t want the extruder to move, do the above, but map E to a dummy axis with M584.

Ian

[o_lampe]

@droftarts
If I'd follow that logic, I'd allow 0.001 steps/mm to avoid 'division by zero' problems.
But in my case it wouldn't drift towards eternity, but to zero time.
OTOH an acceleration of 0 would take forever