Hello,
When using the digital I/O lines of your E-Series board, first you need to configure them (as inputs or outputs) and then you can either write or read from them.
When using component works, the first thing that you will need to do would be to drag the DI, DO or DIO component to the form, right click on it and go to Properties. Right here you will configure the digital ports for the type of operation: input or output.
Once you have configured the ports, all you have to do is write or read from the port/lines. This task has to be implemented with code.
The following example was implemented for the PCI-DIO-96, you can take a look at it, modify it so that the program only access one port and run it!
g.nsf/6c163603265406328625682a006ed37d/6cf589316ab06aa086256a930059b9e8?OpenDocument>Writing to Port...I hope this helps.