I'm playing with two-way rs232 through a Control4 driver I'm writing (and learning how to write) and it seems like a Panny monitor won't give unsolicited feedback. Can anyone confirm this? It responds perfectly to 232 commands, and seems to echo the same command back as an acknowledgement.

Ex:
send PON, TV turns on, returns PON
send AAU (vol+), volume goes up, returns AAU
change input on TV, no feedback received

I have the 232 documentation, but can't find anything about it, and I don't see any sort of command that "enables" feedback.