NI USB-6210 Monitoring Digital input

Hi,

I am trying to monitor voltage levels of slipring assembly in a stepper motor using USB-6210 with Labview.

Currently I have 4 voltage probes connected to the digital Inputs (PFI0,PFI1,PFI2,PFI3) of USB- 6210. I am trying to monitor all 4 inputs, plot and compare the results.

Please let me know if anybody can help me with the Labview program. I am not sure how to read these inputs from NI USB-6210 device.

Thanks in advance,

Sahana