Datalogic Compact 2D Reader Matrix-2000 Bedienerhandbuch PDF herunterladen (Seite 64)

MATRIX 200™ REFERENCE MANUAL

5

5.3.2 RS485 Full-Duplex Interface

The RS485 full-duplex (5 wires + shield) interface is used for non-polled communication

protocols in point-to-point connections over longer distances (max 1200 m / 3940 ft) than

those acceptable for RS232 communications or in electrically noisy environments.

The following pins of the 25-pin connector are used for RS485 full-duplex communication:

Pin Name Function

2 TX+ RS485 Transmit Data (+)

3 RX+ RS485 Receive Data (+)

4 TX- RS485 Transmit Data (-)

5 RX- RS485 Receive Data (-)

7 GND Ground

Matrix 200™

TX+

2

TX-

4

RX+ 3

RX485

RX-

5

TX485

7

GND

GND

USER INTERFACE

+

-

+

-

Chassis

1

Figure 64 - RS485 Full-duplex Connections

NOTE

For applications that do not use RX485 signals, do not leave these lines

floating but connect them to GND as shown below.

Matrix 200™

TX+

2

TX-

4

RX+ 3

RX485

RX-

5

7

GND

GND

USER INTERFACE

+

-

Chassis

1

Figure 65 - RS485 Full-duplex Connections using Only TX Signals

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