Lead-screw Compensation

Hi Guys,
I read the Wiki and several post how to implement/activate the lead-screw compensation, but I cloud not get it to work.

I generated the compensation file for my Z axis with the name Z.comp.
This file is in the same location as the .ini and .hal.

I added the following lines to the AXIS 2 portion of the INI.

COMP_FILE = Z.comp
COMP_FILE_TYPE = 0

I started LinuxCNC and tested the compensation with my dial gauge.
This revealed that the compensation is not active.

I believe that I am missing something in my config and unable to locate it.

Thank you in advance

Thank you for your reply.
I have checked with the HAL Meter and the axis.2.backlash-corr is 0.

I changed the file name and reference in the INI, but it seems not to do anything.
Should I somehow activate backlash compensation in the HAL?

Thank you

I tried absolute path and relative to the INI.
The compensation file is in the same folder as the INI.

I attached my INI and compensation file for reference.

Hello, I've been adding this feature to my machine because of inaccuracies in both x and y axis. And with the x axis everything works fine, but with y I have some issues. My machine setup is that x axis are traveling in positive coordinates direction, but y axis is traveling to the negative coordinates (work table). And then I write COMP_File with the negative coordinates, Linux CNC gives me an error "joint1: compensation values must increase". so The question is there a way to work around that error without changing Y axis travel to the positive side?

Thank you very much, this information that you shared helped a lot at a time. Thank you very much.

lead screws are at this time very cheep and mutch more precise as in the early mashine building years
even Trapezional are on less then 0,05 Backlash at 1meter

and a Balscrew C7 is for so cheep Money avalable to be changed if there is a leak

considder to replace the system