Connector

Connector 1:
M12 socket

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).