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It is ok?
Milko 

With Linuxcnc running and a  S1000M3 MDI command executed,
 what does:

halcmd show all | grep pwm

report?

(halcmd typed in a terminal window)

Wow.! Thank you for the deep explanation.! Let me try that. Because I am no fan of step/dir method which is unreliable and prone to many isues like EMI. Since Ethercat is free and Ethercat Based servos have become relatively inexpensive. I am going to give a shot. 

If the comp table is backwards then the interpolator function will only ever read the first value, so you will get a fixed offset, and no apparent compensation.

Your HAL looks correct.
When you say "in the oszy" do you mean in the HAL oscilloscope , or on a physical one?

In the HAL oscilloscope try scoping both the index-enable signal and the hm2_7i80.0.encoder.00.input-index pin.

If index-enable is high then it should go low when the (short) input-index pulse is seen. 
The index-enable pin should go high as soon as the home switch trips. 
 

  Hello,
between pins 22 and 23 I find 10V
between pins 22 and 24 also 10V
I don't see any change if I lower the speed
if I stop the spindle
between 22 and 23 0V
22 and 24 10V

Thank you

Miilko

I think it was an attempt to link to this thread.

forum.linuxcnc.org/plasma-laser/41893-ci...ng-to-cnc-use#202415

And now that we know that it is CigWeld CutSkill, not Gig SkillCut we might have more idea what is being discussed.