Hello @bibabutzemann,
the 1-Wire pinout on our PLCs is documented here: https://kb.unipi.technology/en:automation:02-glossary:1wire-hidden
Since your sensor is not original from UniPi (we have 4 wires), I can only guess the function of the wires:
red: Vcc
black: GND
yellow: 1-Wire
But you need to refer to the documentation of your sensor, or do the blind test which may damage your sensor.
Best regards,
Martin