As an example, I have a fuel pump switch which is connected to pin 30, and ground. When I turn the switch on, closing the circuit between 30 and ground, this turns the fuel pump off, in the sim. When I turn the switch off, disconnecting 30 from ground, that turns the pump on.
Similarly, I have Start_Eng1 switch which is on when pushed, and off when released. It's connected to pin 38 and ground. When I hold the switch down, the engine starter is off. When I release it, the engine starts. The behaviour is the inverse of what I was expecting, and what the documentation says.
Looking at the data.cfg made by the configurator, what does the *1-1U1 line at the top mean? This is the only line whose function isn't immediately obvious.