How do you add 2 physical channels from the same control?

[BennyDe]

Something like this?

[crossrulz]

That should do it for you.

[BennyDe]

Right when I started the VI, a message came up telling me to replace or cancel the file path. I had to click it many times to make the VI run all the way through.

[RavensFan]

Did you put an actual file path in the control before you ran your VI, or did you leave it blank?

[BennyD]

I added a file path, but I wasn't sure what extension to include. I put .txt

[crossrulz]

The extension doesn't really matter.  What does matter if you actually used a valid path.

[BennyD]

In that case, I definitely used a correct file path

[BennyDe]

I made some alterations, but still, whenever I click the run button, a message comes up asking me if I want to replace my file or cancel. I have to click this error upwards of a 100-200 times before my short VI ends.

[johnsold]

You need to wire the append to file? input of the Export Waveforms ....vi. On the first iteration it should have the default value so you create a new file (if the file does not already exist) and it should have the opposite value on all subsequent iterations so that it appends to the existing file.  Read the Detailed Help for more information.

Lynn

[BennyDe]

Would a case structure be the best way to go about this?