The docs for the S302 binary codes are one of the rare Denon docs which give all the values in hex.

Easiest way to use this is to enter the second half (ignore the first 4 zero's) of Byte 3 through to the end of byte 5 into bits 21 though to 40 in Denon Hex Gen.

For example "ENTER" (key 59) should be entered as 1010 1000 0010010000 00