No Hall Unit data shown on my M5 station

  • I bought a M5 station and used it together with a temperature sensor, this worked out. Now I wanted to conntect a Hall Unit to my M5 station (I used Port.B1) but no Hall Unit data are display when I use the magnet (even the LED in the Hall Unit is not working)
    Does anybody has experiences with M5 station and Hall Unit and can help me with my problem?