Saturday, November 09, 2002 7:29:46 AM Hello Josh, Thursday, November 7, 2002, 10:47:56 PM, you wrote: JK> I don't know anything about these protocols, but I am curious. Are these JK> used internally in the machine (ie to connect the coin mechanism to the JK> dispensing mechanism) or externally (so you could connect a test JK> instrument to the machine to read fault codes)? MDB is the global standard for the interface between vending machine controllers and payment system peripherals. Executive protocol works in a similar way. What I am looking for is the way they interact. -- Best regards, Martin Leg mailto:mleg@arnet.com.ar -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics