Mustek PP3000 Manual de instrucciones descargar pdf (Pagina 45)

5 - 3

CHAP. 5

MAIN …

Serial Interface

9 pin Female D-sub connector

Signal Name I/O Function

1 DCD O Data carrier detect

2 TXD O Transmit data

3 RXD I Receive data

4 N.C.

5 GND Ground

6 RTS O

Request to send. This is always “SPACE” when the

printer is turned on.

7 N.C.

8 DTR O

Data terminal ready. This signal changes to

PACE” when the printer is ready to receive data.

9 N.C.

Peripheral Unit Drive

6 pin telephone jack

Signal Name I/O Function

1 Chassis GND

To connect the shield of cable between printer and

the peripheral device

2 L1 Drive O

Supplies a low trigger pulse to drive the circuitry L1

with a diode protection. This shall not be driven

together with L2 at the time.

3 SW Sense I

To connect through diode and resistor to +24VDC

to detect the status of cash drawer open detection

switch.

4 +24 V DC O Connected to +24VDC supplied by the printer.

5 L2 Drive O

Supplies a low trigger pulse to drive the circuitry L1

with a diode protection. This shall not be driven

together with L2 at the time.

6 GND O

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Mustek PP3000 Manual de instrucciones Pagina 45