Have problem on getting analog values from lane tracking sensor

[garyk]

Originally Posted by Ether

The default lane-tracking sensors are just NPN switches (hi/lo impedance). They are not intended to source any voltage.

Hook it up as follows:

brown wire to +24volts (solenoid breakout)
blue wire to ground
White wire to a DIO input

The internal pullup on the DIO provides the voltage. The switch just shorts out the voltage (provided by the pullup) to provide the digital hi/lo signal.

The KOP optical sensors are part number 42EF-D1MNAK-a2. The paper data sheet and the plastic bag in which they come says they require 11 - 30 VDC. We have then running fine on 12V from the power distribution board. There's no reason to hook them to 24V. You should save the 24V for the cRIO and the pneumatic solenoids.

[Ether]

Originally Posted by garyk

The KOP optical sensors are part number 42EF-D1MNAK-a2. The paper data sheet and the plastic bag in which they come says they require 11 - 30 VDC. We have then running fine on 12V from the power distribution board. There's no reason to hook them to 24V.

Do a little searching in the forums and you'll see why I said to use 24V.