RS232 PC Serial Interface

DB-9 Serial Port Pinouts

The pinouts below are referenced as coming from a PC serial data port via a male DB-9 connector.

1DCD/RLSDINCarrier Detect
2RXDINReceive Data
3TXDOUTTransmit Data
4DTROUTData Term Ready
5GND   Ground
6DSRINData Set Ready
7RTSOUTRequest to Send
8CTSINClear to Send
9RI INRing Indicator

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Updated 02/21/09 12:00

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