Here is a widget to try:
[Link: mediafire.com]

Pioneer Power State.

You will need to delete my RS-232 device and replace it with yours, I left it there so you know how to join it up.

Also.
I am not sure if QS2 is all that is needed to trigger a request. You may need a \r or \r\l etc...

But using the Nevo de-bugger software it is working as expected.

D.