Error in Error -200485 occurred at DAQmx Create Task.vi:2

[txrxmo]

Then how should i compare it to get the result that i want??

[txrxmo]

Thank you very much! it works now! Can i do the same thing when i am comparing a total of 8 different DIOs??

[Dennis_Knutson]

You can use any combination of Boolean logic that you want.

[txrxmo]

Ok. i shall go and try.

[RavensFan]

When you get that many booleans, you may find the Compount Arithmetic functions handy.  You can expand it for multiple inputs, and set the mode to be And or Or.  You can also invert any of the inputs or the output.