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24 Chapter 5 EIA-232: RJ-45 to DB-25

RJ-45 fully-wired terminal/printer cable

Using a 10-pin RJ-45 plug, the following cable wiring supports most serial

terminals or printers with either software or hardware handshaking. This

cable is valid with any Digi RJ-45 serial port.

Most terminals and printers use Request to Send/Clear to Send (RTS/CTS)

for hardware handshaking. The cable shown supports this method.

Terminal/printer cable for software (XON/XOFF) or hardware (RTS/CTS)

handshaking

Note: Some terminal or printer manufacturers may use different methods of flow

control. Consult your documentation for specific wiring requirements.

RJ-45 10-pin

(Digi end)

DB-25 male

(terminal/printer)

Signal Pin Pin Signal

DSR+DCD*

* ALTPIN must be turned

off for DCD to be on pin

2+10 connected to 20 DTR

RTS 3 connected to 5 CTS

GND 4 connected (via shield) to Shell GND

TxD 5 connected to 3 RxD

RxD 6 connected to 2 TxD

SG 7 connected to 7 SG

CTS 8 connected to 4 RTS

DTR 9 connected to 6+8

DSR+D

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 147 148

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