NV9 Operations Manual GA326-4
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© Copyright Innovative Technology Limited 2005
Appendix B - ESCROW Control
The NV9 has a single note escrow facility (pin 10). 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).
30sec Max
Figure 19 - Escrow Timing Diagram for Parallel Vends
If the host machine itself aborts the transaction by setting the corresponding inhibit input high on pin 10,
the note is returned immediately. The sequence of operations is as follows:
1.
Pin 10 held low awaiting note insertion.
2.
Note inserted. Validator issues a 100ms pulse on the appropriate channel.
3.
The host machine initiates vend process.
4. 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.
5. 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.
6. The vend process is completed.
7. 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 NV9 during the 30 second interval, the
NV9 will go out of service for 45 seconds.
Note: Escrow Control (SSP mode):
Escrow is also possible using the SSP serial Interface. Please refer
to SSP Specification GA138 available on the website www.innovative-technology.co.uk.
Escrow Rejection
Escrow Accepting
Inhibit rejection can be at any
time during the 30 second
decision period after completion
of the vend
Inhibit
Escrow held low
Vend Signal
Vend Signal
Do not wait more than 30
seconds for the 2nd vend
confirmation signal
100ms
100ms
Summary of Contents for GA326-3
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