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Quatech RS-422 user manual Half- or full-duplex selection

Models: RS-422

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Jumpers J6, J8

Tx ENABLE

6

3

Rx ENABLE

 

Tx ENABLE

5

2

RTS

Half-Duplex(DTR) Operation

Tx ENABLE

4

1

DTR

 

Tx ENABLE

6

3

Rx ENABLE

 

Tx ENABLE

5

2

RTS

Half-Duplex(RTS) Operation

Tx ENABLE

4

1

DTR

 

Tx ENABLE

6

3 Rx ENABLE

 

Tx ENABLE

5

2

RTS

Full-Duplex Operation

Tx ENABLE

4

1

DTR

 

Figure 23 --- Half- or full-duplex selection

 

AUXOUT

RS-422 or

+

 

 

 

RS-485

-

 

 

 

Driver

 

 

 

 

TXEN

 

 

6

3

 

 

 

5

2

 

AUXIN

RS-422 or

 

RS-485

 

 

 

 

Receiver

4

1

 

 

RXEN

XCLK

 

 

 

 

 

 

 

RTS

 

 

 

 

CTS

 

 

 

 

RCLK

 

 

 

 

DTR

 

6

3

 

DSR

 

 

 

 

DCD

 

5

2

 

RI

 

 

 

 

 

 

4 1

+

-

Figure 24 --- Output control block diagram

 

DSCLP-200/300 User's Manual

29

Page 33 Page 35
Page 34
Image 34
Quatech RS-422 user manual Half- or full-duplex selection
Page 33 Page 35