spindle config

i think it could be damaged as with axis running & i open show hal config it shows as workin (i think) there is nothink at all on5,6,7,8, if i connect as you say all pins show 12v & when the swithes are thrown the votage stays the same on all but the pot is still working.
my next question is there anyway i can configure any of the other pins on this board to spindle enable & spindle reverse or do i try and configure the rs422 (all of which i have no idea about) I do appreciate your patients

You can destroy the ENA and DIR outputs if you supply power to them (they are switches so shorted when on)

You might check with a Ohm Meter before giving up
(note, you cannot use the screws on the top of the terminal block
for testing unless you tighten the screws)

You cannot drive the VFD inputs with the 7I76 field outputs since they
require a sinking (short to ground/common) output and the 7I76 outputs
are sourcing. You would need to add an optoisolator, relay or transistor
to translate the 7I76's sourcing output into a sinking output

I think i might go down the relay route as i can understand how they work, could you sugest which pins & how to configer them please