I also notice that you have some M569 commands commented out.
;M569 P2 S1 ; Z Drive 2 goes forwards M569 P3 S1 ; E0 Drive 3 goes forwards ;M569 P4 S1 ; E1 Drive 4 goes forwards
And in M566 you have a V axis?
M566 X600 Y600 U30 V30 Z30 W30 A30 ; Maximum jerk speeds mm/minute
And then again in your homez you have a V axis?
M584 X0 Y1 U3 V4 Z5 W6 A7 P7 ; separate z axis motors
I think part of your problem may lie in configuration rather than EMI.
The M569 annotated commands are drivers that i are not using.
U to V are extruders. I really only use an extruder, but I think if you didn't define them, the Z axis limit switches didn't work properly.
The problem I also have is that I can't get the extruder to work.
It is clear that there is something that I am not doing well.
How do you think you should configure it.