OK, all sorted out. I used a software program called MIDI Translator by Bome.
I was able to create a preset that can send a sysex message such as the ones you mentioned upon receiving an incoming MIDI message. I'm using program changes triggered by the FCB1010 to trigger Translator to send the longer sysex message. As long as my PC is connected to my setup, which it always is in my studio setup, this works great.
I can control every aspect of the H7600 with the FCB1010 now, including my own algorithms. Amazing…