Hello, I recently updated marlin on my FLSun reprap kit, and I've changed the necessary parameters in the configuration.h file. Now, when I home z, or even send a g28 z0 command, the Z axis homes up instead of down. It's set to home to min, and when I move the z axis up or down, it moves in the correct direction. I don't have this issue with my X or Y homing, so I'm kind of lost as to why it would home in the wrong direction. Thanks!

If you didn't say "When I move the z axis up or down it moves in the correct direction" I would say you just need to change the #define INVERT_Z_DIR true setting.
You may still want to do that. But the problem is you have conflicting data right now.

If description is accurate only cause of this is Z home feed rate to high, and basically its trying to move but failing and bouncing back, actually moving backwards

Edited 1 time(s). Last edit at 04/11/2017 11:37PM by Dust.