Product specifications

CashFlow
®
9520 / 9524 / 9528 Design Guide
©
MEI., 2003 Page 14 Rev: G1
PRODUCT INTERFACES
Standard Interfaces
The standard interfaces available on CashFlow
®
9520/9524/9528 validators are Parallel and
Binary Coded Output (B.C.O.). The validator is supplied in Automatic Mode which senses
the type of interface selected by the host machine via pin 8 (Output Mode Select) of the
machine interface connector.
Parallel Mode
This type of interface is a standard 6 coin parallel output interface as used in the ME126/129
products (Dual Polarity).
The coin outputs for A and C can be combined (e.g. A + C, B, D, E, F) to give compatibility
with ME126 validators and can be set by programming the validator. The coin outputs are
factory defined.
If an alarm condition occurs all coin outputs will be activated simultaneously for >600ms.
Multi-Pulse
This will only operate when in parallel mode. This factory set option will pulse the GB 50p
coin output (of a GB profile) four times on validation of a GB £2 coin.
Coin validation Inhibits A, B, C, D, E, F
To inhibit coin acceptance the CashFlow
®
validator offers six individual inhibit inputs. These
inhibits operate differently for each mode as detailed in the following section.
Parallel Output mode inhibits
The channels that activate the associated coin output will be inhibited when the inhibit is
held High or no connection is made to the relevant input, (e.g. Inhibit A will inhibit coin
output A channels).
Coin Output Common Line
This line allows for operation with positive or negative common systems. The interface self-
configures by sensing the output common voltage supplied by the machine on the coin
output common line, (pin 2 for a 15 way machine interface connector, or pin 3 for a 17 way
connector).
All potentials are relative to the 0V return line to the machine. (Pin 11 for a 15-way
connector and pin 12 for a 17-way machine interface connector).
Negative common operation is selected when pin 2 output common is between 0V to +1.0V.
Positive common is selected when pin 2 is greater than +7.0 volts (Max 12V) with respect to
pin 11.