RS232 to RS232. Cable wiring and pinout

Use this cable between two DTE devices (for instance two PC or RS232 devices).

RS232 port pinout (D-SUB female) on Side 1
RS232 port pinout on Side 1
RS232 port pinout (D-SUB female) on Side 2
RS232 port pinout on Side 2

DB9-1 DB-2
Receive Data
2
3
Transmit Data
Transmit Data
3
2
Receive Data
Data Terminal Ready
4
6+1
Data Set Ready + Carrier Detect
System Ground
5
5
System Ground
Data Set Ready + Carrier Detect
6+1
4
Data Terminal Ready
Request to Send
7
8
Clear to Send
Clear to Send
8
7
Request to Send
Note: DSR & CD are jumpered to show the rs232 software or rs232 devies that another side is online.

RS232 to RS232 related links

- If your devices have other connectors (for example, DB-25 pin) look here: RS-232 - RS-232 connection using DB25 connectors.
- Serial port - Serial port. Possible connections. DTE-DCE, DTE-DTE.
- RS232 port connector with all pins.