Hardware installation serial ports – DFI SR330-N User Manual

Page 33

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33

2

Hardware Installation

Serial Ports

COM 2

COM 1

W

COM 3

COM 4

DCD-

TD

RD
DTR-

GND

RTS-

DSR-

CTS-

RI-

2

2

2

2

2

1

1

1

1

1

9

9

9

9

9

RXD+

N. C.

RXD-

2

2

2

2

2

1

1

1

1

1

9

9

9

9

9

N. C.
N. C.

N. C.

N. C.

N. C.

N. C.

DATA+

N. C.

DATA-

2

2

2

2

2

1

1

1

1

1

9

9

9

9

9

N. C.
N. C.

N. C.

N. C.

N. C.

N. C.

RS232

RS485

RS422

Half Duplex

DCD-

TD

RTS-

RI-

RD

DTR-

DSR-

CTS-

GND

1 2 3 4 5

6 7 8 9

RS232

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