Burkert 8631 Operating Instructions Manual page 26

AS I
NTERFACE
Electrical connection
4-pole M12 circular plug connector
Pin 1: Bus +
Cable bushing with screw terminals
Open the housing.
If needed, insert the enclosed seal for AS interface flat cable into the cable bushing.
Connect the wires to the terminals as in illustration under Status display .
24 - 8631
4
Pin 3: Bus -
2