The address specified in the MDB protocol is assigned by the high five bits of an address byte, and we must strictly follow the definition of address in the research and development of vending machines, otherwise the machine will have address conflicts and is not universal.
The address is defined as follows:
00000xxxb (00h) VMC reserved.
00001xxxb (08h) Coin device.
00010xxxb (10h) Non-cash equipment
00011xxxb (18h) communication gateway address.
00100xxxb (20h) display address.
00101XXXB (28H) Power Management System.
00110XXXB (30h) Banknote device.
00111XXXB (38H) is reserved for future standard peripherals.
01000xxxb (40h) USD device (universal slave device).
01001xxxb (48h) USD device (universal slave device).
01010xxxb (50h) USD device (universal slave device).
01011xxxb (58h) Coin change returner or coin tube 1
01100xxxb (60h) Non-cash equipment
01101xxxb (68h) Age verification device.
01101XXXB (70h) Coin change returner or coin tube 1
01111XXXB (78H) is reserved for future standard peripherals
The 11011XXXB (D8H) is reserved for future standard peripherals
11100XXXB (E0H) Experimental Device
11101XXXB (E8H) Experimental Device
11110XXXB (F0H) Vending Machine Peripherals
11111XXXB (F8H) Vending Machine Peripherals
NAMA MDB protocol.
Vending machine R&D MDB adapter (host):
R&D of vending machine payment equipment (slave):
Need to know about the Vending Machine Agreement
Need to know the vending machine agreement (Chinese):