
DB-25F to DB-25M Terminal Printer Cable
Modem Cables
Terminal/Printer Cables, DB-25 to DB-25
The wiring diagram for a DB-25 to DB-25 terminal/printer cable is shown in Table 1.
Table 1: EIA-232 DB-25 to DB-25 terminal/printer cable
From
DB-
25
Signal Direction Signal To DB-25
6 DSR
RTS 4
8 DCD
3 RxD
TxD 2
2 TxD
RxD 3
20 DTR
DSR 6
DCD 8
7SG
SG 7
4 RTS
CTS 5
5 CTS
DTR 20
Shell GND
GND Shell
* Arrows indicate which direction the signal is flowing
NOTES:
● Altpin should be turned off when using this cable.
● This cable utilizes the DTR signal of the terminal/printer for hardware flow control (RTS/CTS).
● Okidata printers may use SSD (pin 11) instead of DTR (pin 20) on Term/Prn DB25 side of above
diagram. If this is the case, the printer should be set to SSD+.
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