Copyright Innovative Technology GA820-1
APPENDIX E – ESCROW FUNCTION
The BV50 has a single bill escrow facility (pin 10) used in Parallel, Pulse and Binary modes.
This allows the bill acceptor to hold onto the bill once accepted, and then only stack the bill 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 bill will be returned to the customer after 30
seconds See Figure 5 – Escrow Timing Diagram for Parallel Vends.
Figure 5
- Escrow Timing Diagram for Parallel Vends
If the host machine itself aborts the transaction by setting the corresponding inhibit input high,
the bill is returned immediately. The sequence of operations is as follows:
•
Pin 10 held low awaiting bill insertion.
•
Bill inserted. Bill acceptor 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 bill. If this is not done
within 30 seconds the bill acceptor will return the bill.
•
The bill acceptor issues a 100ms pulse on the appropriate channel after pin 10 going
high to indicate final acceptance of the bill. If the signal has not been received within
30 seconds it indicates the customer has forcibly retrieved the bill 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 bill 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
four inhibits high will cause a bill reject.
In the event of a bill being forcibly removed from the mouth of the BV50 during the 30-second
interval, the BV50 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
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BV50 Operations Manual 25
