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of
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TECHNICIANS manual
18.
CREDIT-DEBIT / DEBIT-CREDIT SYSTEM
18.1
CREDIT-DEBIT system with direct connection to the till
The CREDIT-DEBIT system allows coffees to be dis-
pensed 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 physical connection between the machine and
the till is via RS232 serial communication.
When activating, proceed as follows:
•
set the enable parameter P14 = 1.
•
set the enable parameter P312 = 3.
•
The till management software and the standard CS serial cable
is not the responsibility of the manufacturer.
18.1.1 Communication protocol
Description of the operating principle with reference
to the diagram shown below:
1. Order the beverage at the till;
2. Select the ordered dose on the coffee machine;
3. The code that corresponds to the selection is sent
to the till (see the code table);
4. The till replies with
ACK=06H
, thus enabling the
beverage to be dispensed;
5. The coffee machine dispenses the beverage.
If the till does not identify the code, the machine is
not enabled, the selection is not dispensed and the till
sends the
NACK=15H
code.
1
2
3
4
5
•
Baud rate: 1200
•
8 bit
•
1 bit Stop
•
Parity N (none)
Содержание 2GR
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