7.12 Coin Mechanism
1. The Coin Mechanism communicates with the vending machine controller through
a serial communication interface. It will validate a coin and if accepted, send a signal
to the vending machine controller indicating the total amount of money which has
been tendered since the last vend.
2. Once sufficient credit has been accumulated a vend will be permitted. Where
possible the coin mechanism will return the appropriate amount of change to the
customer.
7.13 Coin Blocker
For Genesis machines fitted with a coin mechanism, a logic ‘low’ level from the vending
machine controller will disable any coin acceptance.
7.14 Card/Key System
1. The card system fitted to the machine communicates with the vending machine
controller using the same principle as the coin mechanism.
2. The card system informs the vending machine controller of the amount of credit
on the customer's card. If there is sufficient credit for the selected drink, the
vending machine controller permits a vend and informs the card system of the
amount of credit to be taken from the card. The new balance will then be re-
written onto the customer's card.
Note: For full information and programming instructions for all of these systems,
please refer to the user manual supplied with the validation system.
68
Technical Manual
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