Hi Everybody

I'm development a software, this software is a Bill Changer, I means for example i have a bill aceptador
and one Coin Hopper connected with the computer, the computer all time have the control above both peripherals, ok the software has two parts, the first part is the bill aceptador with the computer (this part already was developed), the second part is the communication between computer and coin hopper, the computer must sent the signal to coin hopper but the coin hopper handle protocol MDB (Multi-Drop Bus), I was looking for in the web and only found a one document about this, but i don't understood a lot things because the information come very general and doesn't come the structure the message and other things necessary for make comunication between computer and coin hopper Could you help me with this issue?

Regards