Connecting inductif approximation sensor to digital port

Hi,
As I have little experience in electronics I was wondering how I could
connect a inductif approximation sensor to one of my digital ports of a
PCI-MIO DAQ card. This card has 8 digital ports which can be configured as
either digital in or out.
The sensor is driven by 24 volts DC, three wires, and is of PNP type.
Anyone?
thanks
I'd like to use this sensor to monitor the speed of a slow rotating machine.
Ron@ld

Ronald
If the signal from the signal is withen TTL specs, you can use it with one of the digital ports on the E-Series boards. TTL specs are 0 - 0.8V for low and 2-5V for high. The rise and fall times will also have to be within TTL specs.
Brian

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