RS-232 Serial Port DB9 (DE-9)
Standard 9-pin D-Sub connector for asynchronous serial data communication (RS-232 / EIA-232) and industrial CAN bus interfaces.
Aliase:DB9, DE-9, RS-232, COM Port, Serial DB9, D-Sub 9
DB9 Male D-Sub Connector (DTE Device View)
9 Pins
Pinout Table9
| Pin | Signal / Name | Type | Alternative Functions |
|---|---|---|---|
| 1 | DCD | Digital | Data Carrier Detect (Input to DTE) |
| 2 | RXD | Digital | Receive Data (Input to DTE) |
| 3 | TXD | Digital | Transmit Data (Output from DTE) |
| 4 | DTR | Digital | Data Terminal Ready (Output from DTE) |
| 5 | GND | Ground | Signal Ground / Common Reference |
| 6 | DSR | Digital | Data Set Ready (Input to DTE) |
| 7 | RTS | Digital | Request To Send (Output from DTE) |
| 8 | CTS | Digital | Clear To Send (Input to DTE) |
| 9 | RI | Digital | Ring Indicator (Input to DTE) |