Innovative Technology GA326-3, Руководство по эксплуатации

Страница: 15 / 38

NV9 Operations Manual GA326-4
15 of 38
© Copyright Innovative Technology Limited 2005
7.3: Binary Output - BIN
To use binary output DIPswitches 3 & 4 must both be up and the BIN option of the interface firmware must
be loaded into the NV9.
In the event that the machine needs more than 4 notes to be recognised, but the host machine cannot take
advantage of the serial communication methods then the NV9 can be set to give a binary pattern output on
the four parallel output pins.
If the NV9 is set to binary mode it will issue the vend signals as a binary pattern on the parallel outputs for
100 ± 3ms. In this way a maximum of 15 different notes can be accepted and 4 notes individually inhibited.
Vend Signals: (Pins 1 to 4). The four channels have their own individual outputs. If a note is recognised the
binary representation of the channel number will be pulled low for 100 ± 3ms. Pulses outside these limits will
be rejected as a precaution against false triggering due to noise.
Busy Output: (Pin 9). This is a general-purpose busy signal. It is active low while the NV9 is in operation.
Escrow Control: (pin 10). The NV9 uses a single note escrow facility in this mode (see Appendix B ). 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 is completed. If confirmation of the Vend is not received then the
note will be returned to the customer after 30 seconds.
If the host machine aborts the transaction by setting the corresponding inhibit input high on pin 10, the note
is returned immediately.
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. 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.
Inhibit Operation: Each channels (1 to 4) have their individual inhibit input to allow the host machine to
refuse specified values of notes. To inhibit a channel, the relevant inhibit input must be held high. To enable a
channel the corresponding inhibit must be latched low so that notes may be accepted.
Note: Channels higher than four cannot be individually inhibited, but will be globally inhibited if inhibits 1 to 4
are inhibited.
If all four inhibits are high simultaneously then the NV9 will not read in any notes. All four inhibits may be
connected together to create a 'global' inhibit. In this way the NV9 may be brought in and out of operation by
the host machine.
7.4:Simple Serial Input/Output – SIO
Existing Smiley® NV4 users may already be using the serial input/output facility in conjunction with the
parallel inputs. The NV9 Validator also supports this system. However this interface is not recommended for
new designs, the Smiley
®
Secure Protocol SSP interface is recommended.
Caution:
•
The NV9 does not support the Simple serial data out only mode as available on NV4. It
only supports the serial data Input/Output mode.
•
The host machine does not echo messages back to the Validator.
•
The NV9 does not operate in true RS232 mode. (Only TTL level)
•
The NV9 will not be enabled in serial I/O mode if Inhibit 3 line is held low when the unit is
powered up
To use simple serial mode, DIPswitches 3 & 4 must both be up and the Simple Serial mode SIO option of the
interface firmware must be loaded into the NV9.
Commands are provided to fully control the operation of the NV9, the notes to be accepted and rejected can
be set and a single escrow mode can be enabled. In simple serial mode single byte commands are
transmitted to the Validator, the Validator echoes each valid command it receives.