David,
We need to see which port you have the USB / RS232 cable in. With the ethernet port on the left hand side, the PilotAware ports are numbered as follows: -
Ethernet 1, 3
Ethernet 2, 4
This is NOT THE SAME order as the port numbering shown on the quick start setup instructions.
You need to know the correct numbering to allow you to configure the ports on the PAW 'Configure' Page, which is why we need a screenshot of that to tell us which ports are configured as what settings - the USB Port reporting on the PilotAware 'Home' Page - which you have posted twice - tell us what is connected, but NOT in which port - as the order they are listed in doesn't bear a direct resemblance to the actual USB port numbering.
Also, you need to connect the Paw Tx to your Dynon (or PC) input, hence why Ian has asked for details of which pins/wires you have used. Simply connecting two Serial cables together by for example using a double male adaptor, doesn't ensure connection of the correct wires between the two devices.
Regards
Peter