A couple more questions,
1) Where you have written:
F0 41 id 00 00 2F 12 a1 a2 a3 a4 data, checksum F7
you have 12 as the command ID, but later you state the message to send is
F0 41 10 00 00 2F 00 00 00 4B Value bits 0-6 Checksum:Method 1 starting 7 F7
Where the command ID is 12h for sending ( or 11h for receiving), has this been intentionally omitted?
2) Also where the datasheet specifies (as in your example for MIDfreq) :
00 00 00 4B 00 00 00 01 00 00 - 00 1B
I'm a little confused as to how a1 a2 a3 a4 data are represented here:
F0 41 10 00 00 2F 00 00 00 4B Value bits 0-6 Checksum:Method 1 starting 7 F7
Thanks again