Date and time stamp in array

[Dave01]

Hello,

I am using Labview 8.0 and I would like to include a date and time stamp each time data is collected and include this as a 5th column in the final array.  I inserted a random number generator instead of devices so it would be easier to understand and test.  I am new to Labview and have never created a date/time stamp before.  Any help or advice would be appreciated.

Dave

[aeastet]

What format do you want the date time stamp. Is second since 1904 ok or do you actually want the date?

[aeastet]

Here is a simple example.

[Dave01]

Either format is fine, whichever is the easiest to understand would be best.  I couldn't open the example with version 8.0.  It must have been created with a later version.

Dave

[aeastet · Accepted solution]

Here is an 8.0 version

[krispiekream]

while we are on this topic.

what does it mean by date or seconds since 1904?

why does labview uses this date?

[aeastet]

Everyone has to pick a standard. Microsoft uses seconds since 1901. It is just a starting point but it is very important to know the differences between systems.

As far as the date vs. seconds since 1904, I would store the date as a string so that I could convert it to what ever I need it to be. It makes saving the data a little more difficult.

[johnsold]

The 1904 date was used by Apple.  Since LV was originally developed on the Macintosh, NI used Apple's convention.

Lynn 

[Dave01]

This solution worked fine for saving seconds since 1904, but now that I have been using the program I would prefer to save the time as HH:MM:SS.  From what I have read, I think I need to convert to a string, but I'm just not sure how to do that.  Here is a simple version of my program.  Thank you for any suggestions or examples.

Dave

Version: Labview 8.0

[tbob]

Yes you need to convert all to strings since the timestamp in HH:MM:SS is a string.  In the string palette, there is a sub-palette full of numeric to string conversion tools.  Use the Number to Fractional String to convert all numerical data to strings.  Use the Format/Date Time String function (found in Timing palette) to convert the timestamp to HH:MM:SS.  See the format string in my example.