DB9 RS232 pinout
Pin | Signal | In/Out | Description |
---|---|---|---|
1 | DCD | In | Data Carrier Detect |
2 | RxD | In | Receive Data |
3 | TxD | Out | Transmit Data |
4 | DTR | Out | Data Terminal Ready |
5 | GND | - | Ground |
6 | DSR | In | Data Set Ready |
7 | RTS | Out | Request To Send |
8 | CTS | In | Clear To Send |
9 | RI | In | Ring Indicator |
db9 pin configuration
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