Changer Operation
PIN # Description
1 34VDC (Supply)
2 34VDC (Return)
3 No Connection
4 Master Receive
5 Master Transmit
6 Communication Common
Figure 8: TRC60X0 Power Plug
Table 8: TRC6510/6512 Power Plug Pins and
Descriptions
Multi-Drop Bus Interface
Multi Drop Bus (MDB) Specifications
The TRC-6510 and TRC-6512 are configured as peripherals
to a VMC along with the bill validator, card reader, etc.
They rely fully on the VMC for a constant communication
that occurs during either idle or operational procedure.
The two lines that are utilized for this process are: TX
data line (Transmit Data) and RX data (Receive Data)
lines.
These lines operate at a 9600 baud rate.
RX Data - enables the changer to accept coins,
informs the coin changer that it is ready to receive
data; the changer determines what change will be
dispensed.
TX Data - informs the microprocessor that a vend
cycle has been initiated, depending on what
denomination has been accepted.
This communication enables or disables acceptance
and coin dispensing during a transaction. The coin
changer simultaneously communicates with the VMC
regarding the type of coin that has been accepted and
the availability of change that may be required for the
next transaction. The routing of the coin, either to the
cash box or to coin tubes, is determined by the coin
changer. Figure 9 shows the power plug of the TRC-6510
or TRC-6512 coin changer.
10
Figure 9: TRC6510/TRC6512 Power Plug
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