
24 Chapter 6 EIA-232: RJ-45 to DB-25
Terminal/Printer Cable with DTR Handshaking
Note: Some terminal or printer manufacturers may use different methods of
flow control. Consult your documentation for specific wiring
requirements.
RJ-45 8 pin Plug Hardware Handshaking (RTS/CTS) Cable
Using an 8 pin plug, the following cable wiring is often sufficient for a
terminal, printer, or other DTE device configured for RTS/CTS (hardware)
flow control. However, some terminals and printers may have other cable
requirements. Consult your terminal or printer manual for this information.
For more universal compatibility, use theRJ-45 10-wire terminal/printer
cable or a Digi RJ-45 to DB-25 adapter.
Terminal/Printer Cable with DTR Handshaking
Note: Some terminal or printer manufacturers may use different methods of
flow control. Consult your documentation for specific wiring
requirements.
RJ-45 8-Wire ALTPIN Terminal/Printer Cable
RJ-45
(Digi End)
DB-25 Male (Peripheral)
Signal Pin Pin Signal
TxD 4 connected to 3 RxD
RxD 5 connected to 2 TxD
CTS 7 connected to 20 DTR
SG 6 connected to 7 SG
GND 3 connected (via shield) to 1 (or shell) GND
jumpered 4+5 RTS+CTS
RJ-45
(Digi End)
DB-25 Male
(Peripheral)
Signal Pin Pin Signal
DSR 1 connected to 20 DTR
RTS 2 connected to 5 CTS
GND 3 connected (via shield) to 1 (or shell) GND
TxD 4 connected to 3 RxD
RxD 5 connected to 2 TxD
SG 6 connected to 7 SG
CTS 7 connected to 4 RTS
DTR 8 connected to 8 DCD
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