PROFINET is Siemens real-time industrial Ethernet using green RJ45 connectors with IRT mode achieving cycle times below 1ms for motion control.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | TX+ | Transmit positive | BUS |
| 2 | TX- | Transmit negative | BUS |
| 3 | RX+ | Receive positive | BUS |
| 6 | RX- | Receive negative | BUS |