The machine is running fine on 3 axis but the next step is setting up limits, home, and estop.
I am using a C-10 breakout board and have it jumpered for both inputs and outputs.
I planned on using scenario 2 in the Mach manual to use the five available inputs for E-stop (10), y limits and home (11), z limit/home(12), and the slaved x axis motors for limits and home(13 and 15).
The switches work logically as NC circuits.
I'm using port1 for everything.
I set up the input pins per plan.
I get no response on the diagnostics screen when i jump/unjump the pin and the +5v connection.
I tried jogging the active hi/lo in the pin assignments screen.
No difference.
I tried switching the pull up/pull down jumper for the inputs on the C-10 - no difference

What simple/stupid thing am I missing?

Guy