Ok, well, it almost worked for me. I spent two hours and now it after midnight and I'm calling it a day.
I setup the PLM 2413u both in UI7 and using the link previously mentioned and the adapter worked. I also made sure that i set the serial port configuration to recognize the instead device. I followed the instructions for pairing the fanlinc (2475f). I set the fan speed set to high, pressed set on PLM (green light flashing), pressed fan set on fanlinc, heard the beeps on both, wait for it...wait for it...wait for it, and created in UI7! I turned the fan off, turned the light on, and attempted to pair, and heard the beeps! Good to go, right? Think again! No device created for the light. Then I toggled the device created for the fan and the light turned on/off. UGH! Removed/reset/deleted/recreated and same results. Then tried to create the fan as an X10 device, but the fanlinc kept timing out before I could get Vera to perform three on/off cycles.
Sidenote...pairing with the fan light red results in the communicating error. At least that is what I think I discovered.
I'm done for the night. Anyone have any more ideas? Feel free to share.
Maybe this is why so many run Alsteon on a Raspberry Pi for Insteon integration.