Repeated data.

[RavensFan]

Your file path constant is empty.  Just like the error message says.

You need to put a file name in that file path constant.

[Iskandark]

ok corrected. Thanks. And for the second question? How do i add numerical graphs and indicators?

[RavensFan]

Go to the front panel, right click to get the palettes, add them.

[Iskandark]

ok...i know this 🙂 ....i mean in the block diagram panel. Where i have to add graphs and numeric indicator? In the While Loop? (see the attached picture..i have a red dot...how i can remove this ?)

[RavensFan]

Of course in the while loop if you want to see them updated while it's running.

What red dot are you talking about?

You should use block diagram cleanup.  The wiring is a mess with some running backwards and some wires hidden.

[Iskandark]

Look the new attached picture (zoomed). I atteched the VI too. I added the graph and numeric indicator in the While Loop, but i can't see nothing in the Front panel!

[RavensFan · Accepted solution]

Why did you use Convert from Dynamic Data Type to a scalar?  The red dot is a coercion from a waveform to a blue dynamic datatype at the input of the blue express VI, which then converts it to a scalar which throws away most of the datapoints.

Use Index Array if you want the first waveform.  Do the math on that so you keep all the datapoints.

[Iskandark]

Thank you very much for directly corrected the VI. Now i can also see the graph and the numerical indicator associated with the pressure sensor!!!! But now i observe other red dots (look at the attached figure). (and when i strat the program i can't see nothing in the numeric indicator and in the graph)

[Iskandark]

Can someone help me please?

[RavensFan]

What value is in your Channel Path control?

Where is your graph called "Data"?  It is missing on the front panel, does it have values in it?.

Autoscale your graph called Pressure Sensor No2.  Your values might be out of range on your Y-axis

Don't worry about red dots.  They aren't inherently bad