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DB9 to 8-Pin Modular Adapter Pin Assignments

To connect the COM port to the DB9 serial port of a PC, use an adapter wired as

shown:

Table 4. DB9 to 8-Pin Modular Adapter Pinouts

8-Pin Modular Port

Direction

PC RS232 Serial Port

1 Transmit Data TxD RxD Receive Data 2

2 Data Set Ready DSR RTS Request to Send 7

4 Receive Data RxD TxD Transmit Data 3

5 Ground GN

GND

Ground 5

6 Data Terminal Ready DTR CTS Clear to Send 8

Pins not shown are unused.

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 27 28

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