Not sure exactly what is being asked here, but it kinda sounds like this realization below.
Never tried sysex msgs. HTH
USB midi to DIN midi convertor:
Just realized that DT can be used as a USB to DIN convertor. For example, in the midi config - channels page, set Track E channel to channel 11. That’s the channel to send data down from the USB. Then set Track E channel to 14. That’s the channel to send out the DT’s DIN connector.
I can use Pure Data to send midi notes out of the computer on the USB cable and pass those notes through the DT and into a 0-coast. The 0-coast only uses a midi DIN connector. It does not have a USB connection. The computer only has a USB connection.