Atop-technology SW550X User manual Manuel d'utilisateur télécharger pdf (Page 16)

Atop Industrial Wireless Serial Device Server Series

SW550X

User Manual V 1.1

10

2.3 Serial Pin Assignments

2.3.1 DB9

Pin#

RS-232

Full Duplex

RS-422/4-Wire RS-485

Half Duplex

2-Wire RS-485

Half Duplex

1

DCD

N/A

N/A

2

RXD

TXD+

N/A (reserved)

3

TXD

RXD+

DATA+

4

DTR

N/A

N/A

5

SG (Signal Ground)

SG (Signal Ground)

SG (Signal Ground)

6

DSR

N/A

N/A

7

RTS

RXD-

DATA-

8

CTS

TXD-

N/A (reserved)

9

RI

N/A

N/A

2.3.2 Terminal Block

Pin#

RS-232

Full Duplex

RS-422/4-Wire RS-485

Half Duplex

2-Wire RS-485

Half Duplex

1

RxD

T+

NC

2

CTS

T-

NC

3

TxD

R+

DATA+

4

RTS

R-

DATA-

5

SG (Signal Ground)

SG (Signal Ground)

SG (Signal Ground)

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