db9 pin configuration

DB9 RS232 pinout




PinSignalIn/OutDescription
1DCDInData Carrier Detect
2RxDInReceive Data
3TxDOutTransmit Data
4DTROutData Terminal Ready
5GND-Ground
6DSRInData Set Ready
7RTSOutRequest To Send
8CTSInClear To Send
9RIInRing Indicator
      db9 pin configuration