Problem homing z axis

Hi *,

I try to home the z axis of my machine. It has a comined limit and home switch at the upper end of the axis. It has no switch at the lower end. The upper end should be zero, the lower end -190. Z+ jogs the head towards the upper end, z- towards the lower end. I can't get the homing setup - it always states errors (different errors for different setups I tried). I use linuxcnc 2.9 (built today) with gmoccapy 3.1.3.6.

I attached my actual config. I tried to set different combinations of the values but unfortunately none worked. Can you please show me the right direction? Thanks a lot for any help in advance!

anli wrote: Hi *,

I try to home the z axis of my machine. It has a comined limit and home switch at the upper end of the axis. It has no switch at the lower end. The upper end should be zero, the lower end -190. Z+ jogs the head towards the upper end, z- towards the lower end. I can't get the homing setup - it always states errors (different errors for different setups I tried). I use linuxcnc 2.9 (built today) with gmoccapy 3.1.3.6.

I attached my actual config. I tried to set different combinations of the values but unfortunately none worked. Can you please show me the right direction? Thanks a lot for any help in advance!

What is it doing? and post the errors.

and get rid of the - in HOME_OFFSET

With the newly attached ini at post #1 (to not confuse others) it drives towards the upper end until it reaches the limit switch, sets the position to HOME_OFFSET and then states



However, I wonder why the coordinate is not exactely HOME_OFFSET but little more - maybe it tries to drive - but in the wrong direction. I tried to inverse HOME_LATCH_VEL to positive (HOME_SEARCH_VEL is positive too) and I would expect the axis to leave home switch and go back to it slowlier than (according to linuxcnc.org/docs/devel/html/config/ini-...witch_example_layout and the below image) but that does not happen.

I dont know what those error messages says but, get rid of negative home_offset and try it. Do your other axis work X and Y?

I try to change gmoccapy to english but don't know how. HOME_OFFSET is already. The picture is already taken with those values.
Yes, X and Y work as expected.

Set home offset to 0.5 and home to - 5 and report what happens