THCAD via 7i96-7i94D mode 2 mpg encoder input

yes, if you mean its DC positive.

OK then you should be able to read that with the 7I84/7I84D

A 75K 1% resistor in series the input should give you
about 160V full scale

PCW wrote: Yeah, the 7I84 encoder counter is really just meant for MPG usage so does not have the
fancy velocity estimation hardware that a normal encoder has. It would be better to wire
the THCAD to a standard encoder input.

So Peter what card should we add to a 7i76e if we want to run encoders?

as turns out this will not work as the reference ground is insulated from the switched ground. I’m back to using the thcad. see attached

That is an EDM output power stage !
Would need to see the rest of the circuit to be sure if the negative side can be wired to GND.
But i would use the THCAD.