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Chapter 9 Pinout reference 149

RJ-45 (Altpin on) to DB-9M terminal/printer cable

From

RJ-45

Signal Direction Signal To DB-9

3 GND GND Shell

4 TxD

RxD 2

5 RxD

TxD 3

6SG

SG 5

7 CTS

DTR 4

1 DCD

RTS 7

2 RTS

CTS 8

8 DTR

DSR 6

* Arrows indicate which direction the signal is flowing

NOTES:

● Altpin should be turned on when using this cable so that DTR will drive DCD (standard usage).

● If altpin is turned off, the hardware signal on RJ45 pin 1 becomes DSR instead of DCD. This

alternative can be used if DCD is not required, and DSR is needed instead.

● This cable utilizes the DTR signal of the terminal/printer for hardware flow control (RTS/CTS).

● EIA-232 cables cannot exceed 2500pF.

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Digi 34 Spécifications Page 144