Whenever I leave the main VI screen, the data is no longer able to be read.
I have a VI that I have used on and off on a test stand of mine for a year and a half. Yesterday, I ran it for the first time in about a month, and the VI had developed a peculiar problem. Whenever I leave the main VI screen and go back to it, data is no longer able to be read. By "leaving the main VI screen" I mean bringing up another Windows program into the foreground, or switching to the diagram screen of the VI I'm running, or even using one of the buttons on the main VI to bring up a sub VI screen. If I stop and then restart the VI, then everything is fine again. All data is read perfectly for hours on end until I leave the screen and then it goes nuts.
I actually ha
ve 4 boards that are being read by the program, and all of the inputs from one of the boards go haywire in this way. The inputs from the other three boards are always fine, and all inputs from the one board always aren't. The inputs include both pressure transducers and thermocouples. I also want to stress that the program worked fine for a year and a half until yesterday. Now, it doesn't. The board that has problems is an SCXI-1102, if that makes a difference, but I really get the impression that it is a software problem.
I originally thought it might be that the sub VIs had been changed in such a way as to not allow them to close properly except that the problem persists even when I simply switch back and forth between the diagram and front panel. In this case, I haven't touched anything in the program! I also thought that there might not be enough disk space on the computer, so I just cleared 100 Meg off my hard drive yesterday, but the problem persists. Does this problem
sound familiar to anybody?
Interesting. I thought about posting the same answer, because I, too have had the same experience with video drivers. I wasn't sure if this was a problem that anybody else was having, but evidently it is.
If you dig deep down into LabVIEW manuals, it does make a suggestion to drop the colors to as few as you need. My driver was having problems with 16 million colors, so I dropped it to 256. All my problems disappeared when I did this, too.
Mark
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Error 1 Method must have a return type C:\Users\PVS\documents\visual studio 2013\Projects\Lesson01\switch_Statement\Program.cs
12 13
switch_Statement
Error 2
Type expected C:\Users\PVS\documents\visual studio 2013\Projects\Lesson01\switch_Statement\Program.cs
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switch_Statement
Error 3
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12 9
ifelse_Statement
Error 4
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ifelse_Statement
Error 5
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C:\Users\PVS\documents\visual studio 2013\Projects\Lesson01\ifelse_Statement\Program.cs
16 9
ifelse_Statement
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C:\Users\PVS\documents\visual studio 2013\Projects\Lesson01\ifelse_Statement\Program.cs
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ifelse_Statement
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Type expected C:\Users\PVS\documents\visual studio 2013\Projects\Lesson01\ifelse_Statement\Program.cs
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ifelse_Statement
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ifelse_Statement
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ifelse_Statement
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C:\Users\PVS\documents\visual studio 2013\Projects\Lesson01\ifelse_Statement\Program.cs
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ifelse_Statement
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ifelse_Statement
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atleast i need to show that each sub vi is completed, [can i add details on the main front panelsuch as: filename that is being read by a subVi, graphs plotted by a subVi, etc..]
can i display a graph from a subVi on the front panel of the main Vi?
what i hv done is attched as picture.
Solved!
Go to Solution.
Attachments:
Capture4.JPG 152 KBas suggested...pass references and cntrl references
Spoiler (Highlight to read)
Attachments:
main ref cntrl.zip 27 KB
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