Copyright Innovative Technology Ltd 2008 GA326-6
APPENDIX B – ESCROW FUNCTION
The NV9 has a single note escrow facility (pin 10) used in Parallel, Pulse and Binary
modes. This allows the Validator to hold onto the note once accepted, and then only
stack the note in the cash box when the host machine confirms that the Vend operation
has been completed. If no confirmation of the Vend is received then the note will be
returned to the customer after 30 seconds, (see figure 19).
Figure 13
- Escrow Timing Diagram
If the host machine itself aborts the transaction by setting the corresponding inhibit
input high, the note is returned immediately. The sequence of operations is as follows:
•
Pin 10 held low awaiting note insertion.
•
Note inserted. Validator issues a 100ms pulse on the appropriate channel.
•
The host machine initiates vend process.
•
The host machine sets pin 10 high to indicate that it wants the note. If this is
not done within 30 seconds the Validator will return the note.
•
The Validator issues a 100ms pulse on the appropriate channel after pin 10
going high to indicate final acceptance of the note. If the signal has not been
received within 30 seconds it indicates the customer has forcibly retrieved the
note and the vend will be aborted.
•
The vend process is completed.
•
The host machine sets pin 10 low in expectation of the next vend.
•
The host machine can force the return of the note to the customer by setting the inhibit
line high, at any time before the end of the 30 second time-out. For channels above 4,
setting all the inhibits high will cause a note reject.
In the event of a note being forcibly removed from the mouth of the NV10 during the 30-
second interval, the NV10 will go out of service for 45 seconds.
Do not wait more
than 30 seconds for
the 2
nd
vend
confirmation signal
Escrow
Vend Signal
30sec Max.
100ms
100ms
Escrow
Vend Signal
Inhibit
Inhibit rejection can be
at any time during the
30 second decision
period after completion
of the vend
NV9 Operations Manual 34
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