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17. CREDIT - DEBIT/DEBIT - CREDIT
SYSTEM
17.1 CREDIT - DEBIT system with direct
connection to the till
The CREDIT-DEBIT system allows coffees to be dispensed
from the machine only after the beverages have been paid
for at the till.
The system is structured as follows:
Order the
selection at the till.
Able to dispense the
beverage that was
ordered at the till.
The machine and tills are physically connected via the RS232
serial communication.
To activate the system, proceed as follows:
• Set the P14 activation parameter to 1.
• Set the P312 activation parameter to 3.
The till management software and the standard
CS serial cable are not the responsibility of the
manufacturer.
TECHNICIANS' manual
Communication protocol
Description of the operating principle with reference to the
diagram shown below:
• Order the beverage at the till.
• Select the ordered dose on the coffee machine.
• The code that corresponds to the selection is sent to the
till (see the code table).
• The till replies with ACK=06H, thus enabling the beverage
to be dispensed.
• The coffee machine dispenses the beverage.
If the cash register does not identify the code, there is no en-
abling and the delivery is not made, the cash register sends
the NACK=15H code.
1
2
3
4
5
• Baud rate: 1200
• 8 bit
URBAN
• 1 bit Stop
• Parity N (none)
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