Changer Operation
Micromech Interface Special Features
Accept Enable - Whenever the VMC sends the
"accept enable" signal on Pin #6, the mechanism
sends the "coin tube status" message. This can be
used while dispensing quarters to see when the
coins uncover the lower sensor. At that time, the
changer can dispense four more coins from that
tube. It can also be used by the VMC to determine if
the mechanism is operating by sending the "accept
enable" message every so often when no transaction
is taking place.
Reset (Pin #11) - this line enables the VMC to reset
the microprocessor of the mechanism in the event
there is a low power condition on the 5 volt line.
When sufficient credit has been
established in the VMC to enable a vend,
the VMC performs the changemaking logic
and sends logic +5V signal(s) to operate
the appropriate 5¢, 10¢ or 25¢ dispenser
solenoids in the mechanism for change
(if needed).
Micromech Interface Exceptions
The 15-pin Micromech interface is a
duplicate of the 12-pin Micromech
interface with two exceptions:
Pin #14 enables dollar coin dispense.
Not all VMC manufacturers utilize this
control line.
The 110VDC is referenced on pins 10
and 12; 24VDC is referenced on pins
13 and 15.
Note: Some manufacturers utilize a 24VDC
system exclusively. In those applications,
you may find that they will jump pins 10 to
13 and pins 12 to 15. This enhances the
installation for either TRC6010 or
TRC6010XV coin changers by using the
same socket.
Note: When the number of coins
introduced exceeds the highest price
programmed into the VMC, acceptance
will cease.
PIN #
Description
1
5VDC (Positive)
2
5VDC (Return)
3
Send (OV active)
4
Interrupt (OV active)
5
Data (OV active)
6
Accept Enable (OV active)
7
Quarter Dispense (OV active)
8
Dime Dispense (OV active)
Table 7:
Micromech Interface PINS and Descriptions
9
Nickel Dispense (OV active)
10
110VDC or 24VDC
11
Reset Line (+5V active)
12
110VDC or 24VDC
13
24VDC (XV model only)
14
Unused on three tube model changers
15
24VDC (XV model only)
9
