How do I wire the limits / home with cncaddon ?

Connecting a GND from the cncaddon, to a limit, does not seem to work.
The GND I used was next to the Vout adjustment, bottom right corner.

Weather I wire this gnd on the cncaddon to a switch (to test), say axis0 = x+, does not seem to work.

What GND should I use ?

I always get a limit switch error all the time.

Since PoKeysCNCaddon is galvanically isolated from PoKeys, the GND of PoKeys should not be re-used at the isolated side (PoKeysCNCaddon limit/home inputs). There are dedicated GND terminals on the PoKeysCNCaddon (there is a pair of GND connections on the connector with open-collector output and a set of five GND pins on each motor connector). Please see the "PoKeys Pulse engine v2 and Mach3 plugin manual (30.1.2014).pdf" (http://www.poscope.com/index.php?route=product/product/download&download_id=83&product_id=50) for details.

Thanks, NeoTo, but I read the manual.

On the CNCAddon:
I have tried to connect a direct wire from the last GND on the wide green block, to X+ limit.
The switch does not work !

/Plugin Control/Config 56E/Pulse engine settings/ limit switch does not change color from red/green as it should.
I am using the pulse engine "dedicated 4-channel with dedicated IO" setting.

If using a switch from the Pokeys board, say IO pin 3, to GND on the Pokeys, the limit switch works correctly.

Servos jog properly ..
but I must have reliable limits, and the dedicated switches would be much better for homing and limits.

Any idea what I could do ?
I have tried both GND signals, on the OC output block, on the CNCAddon.
It seems like the IO signals simply dont work.

I also tried the pin2, GND, from motor connector 5, to dedicated limitx+.
It does not change the pin state on the plugin screen.

Like I said, the  pin3 on pokey57E to GND on pokeys57E, works correctly.
Now connected to limitx-, and works correctly.

So, its only the dedicated IO I am having trouble with.