Reference Guide

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A-1

Appendix A

Null Modem Pin-outs

Null Modem Pin-Outs for Full Duplex

Use the pin-outs shown in Figure A-1 for null modem communication.

Figure A-1. Null Modem Pin-Outs - Full Duplex

PG

TD

RD

RTS

CTS

DSR

SG

DCD

DTR

PG

TD

RD

RTS

CTS

DSR

SG

DCD

DTR

1

2

3

4

5

6

7

8

20

1

2

3

4

5

6

7

8

20