Why whenever I turn on the Printer I only can move the Z axis is one direction?

malebuffy

Hello,

I am building a CoreXY printer and have the following problem. When I turn on the printer, I can only move the bed to one direction, because the Printer always thinks that I am homed.

The LCD displays:

X: 0.00
Y: 0.00
Z: 0.00

followed by

X: ?.??
Y: ?.??
Z: ?.??

and so on.

Only when I move the Z axis down with the menu, I can also raise it but only until the point where it was when I turned the printer on. It thinks that this is 0-Home.

My MIN Endstop is working, so when I press it it registers as being ON.

Why are there questionmarks by the XYZ positions?

My endstops are connected to the MIN positions and are working.

If you need additional Information, please tell me and I will do my best.

PS: I am using RAMPS 1.4 with DRV8825 and PCB Endstops

Repetier

Question marks indicate that this action was never homed.

On startup you are a z = 0. Depending on version and configuration you can not move at all or only away from extruder since negative positions are not allowed. A simple G28 should make it work.

Check M119 if homing does not work to test if signals of endstops work correctly. L = untriggered, H = triggered.

malebuffy

Hey that worked. I just updated to version under development (1.0) so this was new to me.

It wasn't like this on the 0.91 I had I think.

Thanks