Bc2000 (for the BCF2000 & BCR2000)

Good day,

I've taken a look around the group since recent membership and let me tell you, it renews my faith in humanity to see there are still people with brains out there.  Nice little community.  I, on the other hand, use and intend to use the BCF in much simpler fashions, yet maybe they still present new challenges.

I have some experience with SysEx messages and controlling various devices with them.  I am wondering just how one can program a momentary button, say those atop the bc's, to latch on and off.

What I am asking seems simple, but lets get deeper...  Say I want to send a SysEx message from that button to turn a function to "on".  I then have to send a slightly different Sysex chain to turn that same function "off". (changing one bit of the hex)  Let us also say that the device controlled by the BC only accepts input and does not feed any signal back to the BC.

Can I do this with the same button?  Can the LED on the button correspond?  What happens if I turn the BC off and then on again, and the controlled device hasn't changed?

Let me know your thoughts...