Using a 7i92t as replacement for a parallel port

Thanks PCW. Yes, I guess I'm not understanding the configuration software. As shown in your second screenshot, pin 002 (which corresponds to pin 2 in the DB25 connector) shows "XAxisStepGen" and beside it, grayed out "Step Gen-A". Pin 004 (which corresponds to pin 3 in the DB25 connector) shows "XAxisStepGen" and beside it grayed out "DirGen B". So, I said to myself: "Step is being output in pin 2 and direction in pin 3." I need to swap them somewhere. Is my logic flawed? 

Sorry for the insistence, I want to understand the configuration tool.

 

Those are G540 pin assignments (which can be ignored)
The only important thing with the stepgens is that you assign:

0 --> X
1 --> Z

( and whatever inversions you need, note that these inversions
apply to the stepgen, not the indicated pin so will be correct
even though "wrong" firmware was chosen )

Edit: I forgot to add that you can use the "discover" option to get the
correct pin numbers in pncconf, this requires that you setup the host
network so you can communicate with the 7I92, install the correct
firmware, power cycle the card, and then run the discover option in pncconf.
 

Motion in both axes and estop are working!! The spindle is not, but I guess that's easy to solve. And so far no smoke is coming out of any electronic component!!

Thank you unknown and PCW for your help. Now it's just a matter of adjusting parameters, the X axis is too slow, the Z axis looks right. I also want to configure the vistacnc pendant, but that'll be another topic if I don't manage.

Thanks again.