Datalogic DX8200A Manuel d'installation télécharger pdf (Page 27)

INSTALLATION

RS485 Full-Duplex Interface

The RS485 full-duplex interface is used for non-polled communication protocols in

point-to-point connections over longer distances than those acceptable for RS232

communications or in electrically noisy environments. The overall maximum cable length

should not exceed 1200 m (3937 ft).

The following pins of the 26-pin connector are used for RS485 full-duplex interface

connection:

Pin Name Function

2 TX485 + RS485 output (+)

3 RX485 + RS485 input (+)

4 TX485 - RS485 output (-)

5 RX485 - RS485 input (-)

7 GND-ISO Main signal ground

DX8200A

GND_ISO

TX485+

RX485+

TX485-

RX485-

TX485+

TX485-

SGND Main Isolated

USER INTERFACE

RX485-

RX485+

Earth

Ground

CHASSIS

Figure 5 - RS485 Full-Duplex Interface Connections

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Datalogic DX8200A Manuel d'installation Page 27