Digital I/O

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i need 3 io-lines to control the status of an controller from pc. can i use rs232 signals? what do i use?

If you have a parallel port that is available, you can use a VI that can control bits on the parallel port. I downloaded this VI from NI's website, and it worked just fine.

Download the VI at

Also, you have to add the line
to your labview.ini file.

You can also read on how to use this port for input at

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