Z axis

With a little help, I figure out that the “home switch location” is the max my z axis can travel up, Away from slats. Thus “home switch location” is where You would want the z axis to move to when once it find its home/max limit.
So I my case the “positive and negative travel” boxes where throwing me off.

Homing can take a while to get your head around, this gives a fairly good description.

linuxcnc.org/docs/2.8/html/config/ini-homing.html

So next is the Mesa thcad-10 set up.
Do I really just need to set up the following 3 line in my machine hal file?

setp hm2_7i96.0.encoder.00.scale -1
setp hm2_7i96.0.encoder.00.filter 1
setp hm2_7i96.0.encoder.00.counter-mode 1
My current mode is set to 0 for arc voltage signal
And if so once I plug in the numbers that I calculated for voltage scale and offset what should voltage be reading on the screen just resting?

If you have a 7i96 then yes, you need those settings in a Hal file.

You should read 0v at rest.

need some more help guys,

mesa thcad-10
at this time i have my mode set to 0 . its blow-back style plasma machine the primeweld cut 60.
its connected to the 50/1 divider.
i calculated the offset & scale. scale 0.01985851 & offset 3668.7500 .
i plug these number in and i get a negative reading of 73 volts. i change my scale to - 0.01985851 and i get a positive 73 volt reading on the screen. so I set the scale # to 0 and it screen shows 0 V , doesn't move from there. i did a test cut and got a reading from the thcad-10 card of 2.245 on my volt meter.
Hoping its something in my hal files. i attached some files check them out.

A scale of 0 will give 0v out.

Maybe the 50:1 is not accurate. What are the numbers on your THCAD?

0V is 117.4 KHz
10V is 923.1 KHz

Well your numbers are spot on.

You didn't add any external resistance?

Nope, no external resistors.