Good, Ol' Necro post, but since I had issues finding this information for a while, I want to make sure someone could find these easily:

Working for me on Sharp PN-E702B and PN-L702B with RTI XP-6 and Crestron MC3 -

POWR 0\r – Power Off
POWR 1\r – Power On

INPS0001\r – Input 1 (One TV required this every time it turned on before I was able to change to other inputs).

INPS 2\r – Input Select VGA
INPS 9\r – Input Select HDMI
MUTE 0\r - Mute Off
MUTE 1\r - Mute On

These are the only ones I had tested so far. If you check out Sharp's Manual, you can extrapolate other codes from there, and see if they work. One thing I have determined: So far the TV's have liked spaces vs 0's for the second byte.