Yamaha ProR3 Owner's Manual page 50

Add-8
MIDI data format
#11 Parameter Value Request
This message can be received on the currently selected MIDI channel.
When this message is received, the value of the parameter specified by the parameter number
will be transmitted as Parameter Change data.
STATUS
ID No.
SUB STATUS
FORMAT No.
DEVICE CODE
PARAMETER No.
EOX
ProR3 Digital Reverberator
11110000(F0H)
01000011(43H)
0010nnnn(2nH)
00011110(1EH)
00000101(05H)
0ppppppp
0ppppppp
11110111(F7H)
n=0-15