RJ45 serial port pinout
| Pin | RS-232 | RS-485 (4-wire) | RS-485 (2-wire) |
|---|---|---|---|
| 1 | RXD | TX+ | TX/RX+ |
| 2 | CTS | TX- | TX/RX- |
| 3 | TXD | RX+ | Unused |
| 4 | GND | GND | GND |
| 5 | GND | GND | GND |
| 6 | RTS | RX- | Unused |
| 7 | DRS/DCD | Unused | Unused |
| 8 | DTR | Unused | Unused |
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DOCUMENT RESOURCES |
DIGI RESOURCES |
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