Originally Posted By jimlaing
I got my answer: When I press RotarySP, the following is sent:

on/Fast:
10:13:48.156 From MIDI SysEx Yamaha 9 bytes F0 43 10 4C 03 01 02 01 F7

off/Slow:
10:13:48.897 From MIDI SysEx Yamaha 9 bytes F0 43 10 4C 03 01 02 00 F7

Now if I can get my controller to send this MIDI string . . . ?
Have you tried to send sysex messages to your Genos uning some IOS apps? You can use MIDI OX or a simpler app Send SX. https://www.bome.com/products/sendsx

Not too many MIDI devices these days that can program and send sysex messages. Some high end MIDI foot controllers can. I know that some old Novation and Roland MIDI controllers can also.
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"You Shall Know the Truth, and the Truth will set you free." John 8:32