RS485
The optional RS485 serial interface includes an electrically isolated M12 IP65 socket for serial data transmission.
The channel features overvoltage protection. If an overvoltage occurs, the channel is switched off.
Fig.13: RS485 interface pin numberingPin | Signal | Type | Description |
|---|---|---|---|
1 | - | - | - |
2 | TxD + | Data-Out + | Transmit 485 |
3 | RxD + | Data-In + | Receive 485 |
4 | - | - | - |
5 | GND | Ground | Ground |
6 | VCC | VCC | +5 V |
7 | TxD- | Data-Out - | Transmit 485 |
8 | RxD- | Data-In - | Receive 485 |
9 | - | - | - |
On delivery the interface is configured as a half-duplex endpoint without echo as standard:
Function | State |
|---|---|
Echo | off |
Auto send | on |
Always send | off |
Auto receive | on |
Always receive | off |
Termination | on |