CMA Technical Manual - Love Coffee Machines

R
ICD 6 - English
espresso coffee machine - CREDIT-DEBIT system
1.2 Communication protocol
Description of the operating principle with reference to the diagram shown below:
• request the beverage at the cash register;
• select the reserved serving on the coffee machine;
• the code that corresponds to the selection is sent to the cash register (see table of codes);
• the cash register replies ACK=06H thus enabling dispensing;
• the coffee machine dispenses the beverage.
If the cash register does not identify the code, there is no enabling and the selection is not served, and the
cash register sends NACK=15H
PUSH BUTTON
BUTTON CODE
ACKNOWLEDGED
START/DISPENSING
1
2
3
4
Baud rate: 1200, 8 bit + 1 bit Stop. Parity N (none)