DMS Food Vending Machine

gpl11 – http://www.dsvendinginc.com/pdf-manuals/gpl11.pdf

 

http://www.monstervending.com/manualspdf/food/FoodKing-Setup-4290001.pdf

 

What does the serial port do, and what can it be made to do?

http://en.wikipedia.org/wiki/Multidrop_bus

http://www.google.com/patents/US20030149827

High voltage, have to figure that out.

http://www.bonusdata.net/mdb_interface/downloads/Technical%20Manual%20for%20the%20MDB%20Interfaces%201_04.pdf