[0.92.8, Delta] ENDSTOP_(X|Y|Z)_BACK_MOVE reduces Z_MAX_LENGTH

docpayce

Maybe a bug, but maybe just not well documented: When ENDSTOP(X|Y|Z)BACK_MOVE is non zero, it will reduce Z_MAX_LENGTH by an appropriate amount in Deltas. If it is not a bug, may I propose to document this behaviour in the Firmware configurator? Something in the way like "This will reduce your total build height, i.e. Z_MAX_LENGTH" would be enough.

Btw: If I may add, after homing and moving to G1 Z-ENDSTOP(X|Y|Z)BACK_MOVE, an G1 X0 Y0 (or G1 X X_MIN_POS Y Y_MIN_POS) would be appropriate to compensate for Delta's Tower Endstop offset settings.

Best,

Peter

Repetier

Yes, this reduces the build height, but you should also note that at that height build radius is 0 so this not really true as you can not move in x/y direction without hitting an endstop and causing a unwanted shift. So this is more to protect you from that problem and should not be confused with endstop offsets that are to make it level to bed.

docpayce

Ok, thought so, ty. Still, the documentation in the Firmware configurator may be updated a bit to notify the user about this. I do think it's a great feature, allowing for defining a completely printable cylinder. Ty!