MDB Multi Drop Bus protocol by NAMA ver 3.0

The class of CMDBCOMMUNICATION is the class for controling the Bill Validator and Coin Charger based on the protocol of MDB(Multi-Drop Bus),The following words will show you the meanings of relative variable and function in details.

mdb协议，包含各种终端，自动售货机协议-Version 4.1 of this specification is the fifth release of the international Multi-Drop Bus/ Internal Communication Protocol (MDB/ICP).