Additional Information
The distinction between Port 0 lines and PFI lines will be outlined in the specifications document for your NI Device. An example for the PXIe-6375 is shown below.
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![](/servlet/rtaImage?eid=ka03q000000t9ui&feoid=00N0Z00000HEWRM&refid=0EM0Z000000FgEW)
![](/servlet/rtaImage?eid=ka03q000000t9ui&feoid=00N0Z00000HEWRM&refid=0EM0Z000000FgEb)
You can read more on the difference between Digital I/O and PFI in chapters 6 and 8 of the X Series User Manual , respectively.