biesse rover 316 retrofit

if it should be pwm does it can be increased over 20k, in pnconfig it is disabled and fixed? we will see on other axis whan i connect all.
now i am trying to install and enter the pnconfig in mint 19.3, if it doesnt work will change pc as next step, even i think is ok Dell 980, i5 8gb ram nic on board.

The PWM rate is set by the drives, there is nothing on the LinuxCNC side that can change it

which would be the recommendation of the computer?  maybe what freezes the whole linux has to do with the computer, and whether it is acceptable and better to insert ssd hard due to vibration (to note that my computer is in a closet where there is a lot of vibration.

Little progress today (big for me) I found that the freezing of linux is hopefully because of Pc, I replaced Pc today and after an hour nothing bad happened, following Tommy's instructions I got to the point when looking at halscope (but I'm not really clear that straight line..somehow everything goes fast and I can't see what's going on)..to be continued:)
Motor still sounds at high frequency both in operation and while standing. when I turn on all three axes the orchestra will play

tha config is only p 0.25 an ff1 0,008 and it works without errors. estop is factory snake line i following trough all machine..it stops mechanical for now all relays, amps etc and it works, also every axis have one limit box with two contacts pins , one to disable driver and one for homing(have to figure how to wire it to 7i77 to have homing)Yes i wire ena switch on 7i77 and enable drivers works by linux cnc. Next step is to wire and tune x and z motors.. and next question should be how to make simple button like goto zero all axis (mach3)? for me it is very helpful gadget because i am woodworker and not doing with same panels.. often it is hard that machine offsets in factory origin and wooden pieces. my origin’s are usually in the center of wood piece and homing is not so necessary?

new success today..x axis in use by Y axis settings and encoder replaced (factory was broken) in my opinion it works fine. Tomorrow I will hopefully run z axis. Spindle works by settings all great up to 18000rpm at 10v. What bothers me is that the axis screen has a spindle speed of 0-3000. My question is where can I change that?

also i dont have that ultrasound from X motor(all motors are the same) does encoder can make it , on X axis i put encoder omron 1000ppr(china) ..on y where is a sound is factory encoder 500ppr(needs 12v and power him  from machine)?

New problem appears.. when i try to assign input for home switch for y axis and anter som -10 to offset ( physical i didn’t mount switch to 7i77) after that both axix x and y jump about 10mm and break with following errors. i try to back all pncfg config as it was before but the same happens when i enabe drivers f2. any suggestions why it happens to even all fields have everything asme as before configuration worked fine?

a new problem appeared when I tried to do homing i even didnt put 24v to input pin i wanted as home shwich, all axis jumps both before and after enable the driver(f2)... on the analog output 7i77 is not 0V, but as I measure it has 0.5-0.65v everywhere..do you know if it is a software or hardware problem with 7i77? Thank you