Try wiring an empty array into the "History" property.
> I want to convert this timestamp to string.
Use Format Date/Time String.
> Also how to compare timestamp data type with string > timestamp.
Because i want to read the time stamp
> from file and compare with current timestamp.
Why can't you save the time stamp value instead of the text? That
w
The sound scheme is part of the Windows OS, not LabVIEW. Look in
"Start >> Control Panel >> Sounds and Audio Devices". Now open the
"Sounds" tab. I'm using XP, so it may be slightly different if you
are using, say, Windows 2000.
On the bottom, there should be a list of sounds, such as "Asterisk
On Windows, LabVIEW uses the default MessageBeep function. Look in
"Control Panel >> Sounds and Audio Devices >> Sounds >> Sound scheme"
and make sure you have a working scheme.
Charts and graphs are indicators, so you have to look at it's source.
If it is a waveform, use the waveform unbundler in the waveform
palette.
It's because the array is not set up like the standard C array. Read
"Using External Code in LabVIEW" in LabVIEW's help. Also, if you
right-click on the Call Library Node and select the option to create a
header file, the header file will show the data structure more
clearly.
Yes, parallel event loops where they handle the same events are not a
good idea. Try the Queued Message Handler template.
I think you are talking abou the automatic error handling. You can
change the settings in Tools>>Options>>Block Diagram .
I'm not sure about how your specific application is set up, but here
are some things to look at:
1) There are several VI Properties in the Window Appearance section
that you can set, such as "Show front panel when called", "Close
afterwards if originally closed", and "Show front panel when loaded"
I tried a few different versions of LabVIEW, and I never get controls
that are inside a tab control directly from the front panel's
Controls[] property. So I'm guessing there is something odd about
your development system.
One possibility is the ini file (I assume both are Windows). I can't
thin
The access violation is a common and broad error, and by itself isn't
enough information. If LabVIEW crashes every time when opening it,
the VI is probably corrupt. Can you drop the VI as a SubVI onto your
block diagram?
Times in LabVIEW are based on 1904. If you need to communicate with
the DLL, just add/subtract the number of seconds between 1900-1904. I
believe that's 4*365*24*60*60.
"The application note states that everytime you use a local variable,
a copy of variable is made. Can someone explain to me why this is?"
LabVIEW has to ensure that everything is reading and writing from one
master copy, so simultaneous reads and writes do not collide.
"Also, if I am writing to a
'and' is being used as a bitwise operator, not Boolean. So we are
testing for the single bit at value 16 (0x10). LabVIEW also works the
same way with the AND primitive et al. when you use integers as
arguments.
You should be able to use the Port I/O VIs to do port reading/writing.
Are you using LabVIEW 7.0? If so, you can set the format string to do
that. Right-click on the control and select "Format and Precision".
Select the "Advanced editing mode" radio button on the button and type
the string "%<%X %x>T" into the Format string field at the top.
You can read more about
It's integrated with LabVIEW. On the menu, go to Tools>>Build
Application or Shared Library
Any application created from LV requires the labview runtime engine.
On a side note, I don't know of any executables that are independent
to dlls, even though the dlls are assumed to be on every OS. Even if
you create a C program without specifying any dependent dlls, the
default is to link with
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