OK, I've managed to get at your picture.

The data I see there is a stream of midi. Quite a few timing bytes, with some actual midi in the middle. Some Controller data for Channel 1, then some for Ch 4, maybe a little more lower down.

This is all plain, standard, MIDI. Not SysEx. You could make a little midi file with this in, and 'play' it whenever, and send it through. SysEx would need a LOT of extra info, and the data might need to be somewhat different, so it would be a LOT of extra work, if it was possible. Why bother if you can just send the MIDI?

To give you the full data, what's there is the block for Ch 1 controller (the lines starting B0). Two lines for RPN LSB and then MSB, followed by Data Entry (2 bytes) then two bytes of data? Then looks like tqo more RPN lines for end of instruction.

Then something very similar (exactly the same ?) for B3 (Channel 4).

Was there some reason why you were thinking SysEx, rather than just a little midi file? Do you have some way to 'play' a midi file of instructions - i.e. no actual music?

Geoff

Roland FR4x accordion needs sysex for a pedal control. It is found on page 80 foot pedal parameters setup on the Roland. I have managed to create the sysex to control function 1-9, but would it be possible to create a sysex to control expression. See fc300 manual page 64…I managed to create the sysex for push buttons 1-9 as in picture link. But not quite familiar with how expression would work in this application. Thinking of using the Morningstar pedal which capable of sending sysex and an expression pedal can be also programmed…

See page 80
https://static.roland.com/assets/media/pdf/FR-4x_reference_e01_W.pdf

See page 64
https://static.roland.com/assets/media/pdf/FC-300_OM.pdf#page64

Sysex for pushbuttons…
https://share.icloud.com/photos/0828FWBryvxjpcCUdvbjvZDgA

Situation: You want to send the same format of System Exclusive messages that the Roland FC-300 foot controller sends so that you can control the Roland FR-4x accordion. You have already determined the System Exclusive messages that the foot switches send. Now you are trying to determine the System Exclusive messages the expression pedals send.

Note: There are two expression pedals on the Roland FC-300. Each expression pedal has a dual function:[list]

F0 41 10 00 00 20 12  w  x  y  z F7



w Address Big

x Address Small

y Data

z Checksum

                               F0 41 10 00 00 20 12  w  x  y  z F7



Expression Pedal 1 tilt min    F0 41 10 00 00 20 12 24 00 00 5C F7

Expression Pedal 1 tilt max    F0 41 10 00 00 20 12 24 00 7F 5D F7

Expression Pedal 2 tilt min    F0 41 10 00 00 20 12 24 01 00 5B F7

Expression Pedal 2 tilt max    F0 41 10 00 00 20 12 24 01 7F 5C F7



Expression Pedal 1 toggle off  F0 41 10 00 00 20 12 22 00 00 5E F7

Expression Pedal 1 toggle on   F0 41 10 00 00 20 12 22 00 7F 5F F7

Expression Pedal 2 toggle off  F0 41 10 00 00 20 12 22 01 00 5D F7

Expression Pedal 2 toggle on   F0 41 10 00 00 20 12 22 01 7F 5E F7

Thanks for this…give you my results soon…