Connector
M12 socket X02
Pin | Wire color | Signal | Description |
|---|---|---|---|
1 | brown | - / A | Inverted data line |
2 | white | + / B | Non-inverted data line |
3 | blue | GND | Ground |
4 | black | Vcc | End device supply voltage |
5 | grey | Shield | Shield |
 | The signal designations "A" and "B" are not clear With some devices the designations of the data lines "A" and "B" are swapped. |
| RS485 bus structure - use termination resistors A linear bus with more than two devices can be set-up in RS485 mode. To prevent reflections during the data transmission, it is necessary to terminate the line ends of the bus cable with resistors (120 Ω). |