SysIntegration is correct that we may need to guess.  If you can learn the Power toggle code and post e.g. the Pronto Hex here, we can eliminate the question about the device and subdevice numbers.

6122 may be a decimal number but it may also be in hexadecimal format.  Even if that is true, we still don't know whether they mean D=0x61, S=0x22, or D=0x86, S= 0x44 (bit reversed on a single byte) or D=0x44, S=0x86 (bit reversed on both bytes).

Regarding the discrete function numbers, I suspect "Power ON is 0xAE // 51" actually should have been written 0xAE//0x51, because 0xAE and 0x51 are binary complements.  Perhaps the function number is 81 decimal, but all of this is just a guess.

It would really help to have one learned signal.