Questions:
- What are the properties of the Banner sensor? What clues does the sensor datasheet give you?
- What is the pull up/down configuration of the roboRIO for that particular DIO line? Hint, pg 15 of the user manual - or look above

- What does this circuit look like when "on"? "off"?
- Will this work?
- If not, how can you change the circuit to make this work?
Extra bonus
- Why did hooking up a multimeter make this work?