The following links refer to the MIDI Implementation of the CASIO WK-6600 keyboard.
It is a reduction of the original file "MIDI_074H_E_1206A.pdf" for keyboards: CTK-6200, CTK-6300, CTK-7200, CTK-7300,
WK-6600 and WK-7600. I removed all themes and features exclusive to the CTK-7200, CTK-7300, and WK-7600 keyboards, leaving only the corresponding for the CTK-6200, CTK-6300, and WK-6600 keyboards. But since I only own the WK-6600, I define it for this keyboard and I don't compromise with the others.
I also eliminated everything related to the bulk parameter set transmission of data since for me it is an incomprehensible gibberish.
In addition, I included some examples of how to use the individual transmission SysEx and what is received from the keyboard after sending these messages.
There are two documents: one in English and the other in Spanish.
I hope someone will find it useful.
Greetings to all.
WK-6600-MIDI-Implementation-EN.pdf
https://mega.nz/file/84AnGKCZ#NJfvHA8kmiYfMLBdI5xzF0EybXr7MgZen8iEIDJdoiE
WK-6600-MIDI-Implementation-ES.pdf
https://mega.nz/file/QxJxjYJS#47KMw6TEWpf4sDMe66jDhgO-hRK5j2ssryaiY3cET0Q
WK-6600-MIDI-Implementation-ES.pdf
WK-6600-MIDI-Implementation-EN.pdf