Time Stamp Control and DST

I'm sure there's a way around this, but I can't find it...
I need to set a timestamp to 01:59:00 on the day DST starts. Unfortunately, LABVIEW recognises this as within the missing hour, and changes the timestamp back to 00:59:00
Is it possible to configure a timestamp control to ignore DST? Or is there some way of getting Labview to ignore DST all together?
Thanks for any help,
Jon.

Tournifreak wrote:
I'm sure there's a way around this, but I can't find it...
I need to set a timestamp to 01:59:00 on the day DST starts. Unfortunately, LABVIEW recognises this as within the missing hour, and changes the timestamp back to 00:59:00
Is it possible to configure a timestamp control to ignore DST? Or is there some way of getting Labview to ignore DST all together?
Thanks for any help,
Jon.
Try shutting off "Automatically adjust clock for daylight..." under "date and Time Properties" if you are on a Windoze machine.
The Timestamp control uses the OS to translate times so shutting that option off MAY help (no I have never tried it).
"Under the hood" the "real time" (number of seconds since ...) is still the same. The issue is just how that value is interpreted and displayed. Under to definition of DST that time of day simply does not exist! This really goofs with you when you are trying to do something at the same time every day since one day has 23 hours and another day has 25 hours! But now i digress.
I hope that helps,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Similar Messages

Can't show 7PM with Time Stamp Control

Maybe it's just me, but I can't seem to get any time stamp controls to accept 7PM as an entry.
....this is kind of a problem for the data entry I'm supposed to be doing this weekend.
Any workaround?
Patrick Allen

Thanks for the reply Guenter.
It's very strange. Even after shutting down LabVIEW and starting with an entirely new VI, the time stamp control always displays 00:00:00 when I try to enter 7PM.
I've tried changing the defaults to just about everything. But it's always the same behavior.
For my work around I decided to just use Excel for all my raw data entry. I'll write program to stuff it all in the database later.
*edit*
I just downloaded the attachment on your reply.....and it worked just fine.
I'm uploading the entire .vi now. This is bizare.
Message Edited by pallen on 10-03-2009 05:44 PM
Patrick Allen
Attachments:
time stamp weirdness.vi ‏6 KB

Why does Time Stamp Control not produce a Absolute Time output?

I have used the the Time Stamp Control for manual input of measurement information. However, this control produce a time stamp in relative time which is unwanted. I thought that Time Stamps always are in Absolute Time. Is this not true? The control is very handy for time and date inputs. Is there a way of changing the output to relative time?

I will try to be more specific:
There is a Time Stamp Control available in the controls palette for use on the front panel. This can be used to set a variable called Time Stamp with values of time and date. It has a time and date browser which is very convenient to use and I like to use it. The time format I prefer in this case is Absolute Time which is time-zone-independent and it is the number of seconds elapsed since 12:00 a. m., Friday 1, 1904, Universal time according to LabVIEW help. However, the output from the Time Stamp Control is in Relative Time which I think is the Absolute Time compensated with Dayligth Saving Time and the local Time zone setting in your system.
Time Stamps are always in Absolute Time I think but not in this case.
My problem may be solved with a VI similar to "Format Date/Time String Function" but with a time stamp input and output, since this VI converts from Absolute time to Relative time. Even better is of course having a Time Stamp Control where you can select between absolute and relative time.

Time stamp control dialog kills System Exec.vi !

Hello!
I just experiance a really strange behaviour in my application. I managed to reduce it to a much smaller VI, please do not look at the framework but at the actual problem, this test MAIN vi looks like this since it is a skeleton of a bigger application (i had to remove many non-relevant and confidential parts).
So. I have a USB watchdog relay from a 3rd party company, which I can use perfectly in my application via a supplied EXE. I call this exe from LabVIEW using the System Exec.vi , and it works perfectly and the Watchdog functions as it should. However I see a strange bug (?): if I launch a Time stamp control dialog browser window, it "pauses" somehow the System Exec.vi. So my watchdog command setting stops, relay opens, problem!
I zipped my test application and I can reproduce this same problem even if I just call a command line PAUSE win command. Note that, in my real application, the Time stamp control is located in a separate, dynamically callled (call and forget method) VI, but I get the same bug!!!
Steps to reproduce the bug:
start my application
observe as the bottom loop iterates
Click on the Time Stamp control's browser to pop-up the dialog window.
You can see the iteration of the bottom loop stopped (DAQ loop iterations)
if you close the dialog window, the bottom loop continues execution
What the heck is this???
How is this possible, why there is "interference" between a totally separated control and a bottom loop System Exec.vi ???
Thanks for any suggestion!
In my real app, as a workaround, I just hide the browser element of the Time stamp control...
Solved!
Go to Solution.
Attachments:
HYDE_loop_software.zip ‏348 KB

Thanks! Yep, I can do a workaround, like create my own time stamp dialog window to pop-up if i wanna be "fancy".
But this is important to keep in mind, if we use the SystemExec vi!
If someone can explane this issue/feature deeper, I will be happy, but I mark this above post as solution, thanks!

Detect if Time Stamp control user dialog has been pressed

Hi,
I have to make some changes to my project. I can't modify existing program blocks, so I must figure out a way to detect if user has pressed user dialog icon for setting up time (control type is Time Stamp). I now I can compare current values with the values from previous loop pass, but that is not a option.
I'm looking for some kind of property node like active control or something similar.
Message Edited by _thomas on 10-31-2009 07:19 AM
Solved!
Go to Solution.
Attachments:
Timestamp user dialog icon.JPG ‏3 KB

There isn't. You can create your own time stamp control (like an XControl), or you can simply monitor to see if the window appears. You can do the latter using the VI Server functions or you can use the operating system API. For Windows you can use the LabVIEW Windows Utilities library.

Time stamp control

I am using the Time stamp control to allow a user to enter a date easily. How do I convert the time stamp data to a string?
Using V7.1 on Win2000.
thanks.

Greg,
Use the "Format Date/Time String" function from the Time & Dialog palette. You can either stick to the default output format, or you can produce an arbitrary date/time format by wiring in a format string of your own (see the help). For example, "%I:%M:%S %m/%d/%y" would produce an output like "00:14:41 01/29/04".
--John

Time stamp control size

Hello,
I need to change size of time stamp at runtime.
I can set width at edit time:
Have been looking for that property and can't find it...

I can't find a writeable property node for the variant width.
Do you truly need that? A variant indicator or control is one of those ones that users can't really interact with and really isn't all that presentable to a user. They are mainly used for programmatically passing any kind of information fron one VI to another, not for user interaction where'd you care about how it looks. The would generally be hidden from a user.

How do you date and time stamp pictures and videos using a EOS Rebel T3?

I am needing to utilize date and time stamping on videos and photos in my work. The pictures and videos must display time, a date, and reference number. I have gone through the cd, owner's manuel and software manuel and I am unclear if I can perform this function.

While this is a relatively common feature on point & shoot cameras -- where the photo is thought of as a snapshot to document a memory in a person's life, among DSLR cameras it's not very common (I don't actually know of a DSLR that does this though I don't doubt that it may exist). DSLR users are usually expecting a higher quality image -- so now the image is thought of more like art and less like a snapshot and the date/time in the corner distracts from the image. Also they tend to be more advanced users who would be able to modify the image themselves so they have little need for such a feature.
The camera does record the date & time... but it's in the EXIF data (information recorded into the image file but not displayed).
SO... there are programs that will just do this. You'll need to do a search (I found several but have never tried one so I can't vouch for them). I think there are Photoshop plug-ins that do this (assuming you have Photoshop). These programs allow you to define the info you want printed (including EXIF data such as date/time) and you get to pick the location, font, size, color, etc. and ultimately the location on the image where you'd like the info displayed. They then add the info visibly onto the image for you and most support "batch" use (e.g. drop a whole folder of images on it and they'll do them all.)
Tim Campbell
5D II, 5D III, 60Da

Time stamp conversion and graphs from array data

How can you read time stamps and data currently in an text file as an array and split in for display on a graph. I think I need to convert the time stamp back into seconds to do this but not sure how to do so?

If you're using 8.2, the Read From Spreadsheet File VI can read string files. If not, you will need to open the VI and read the instruction on the diagram for how to change it.
Once you have your string array, you can use the VI found here to convert the time column (note - read the thread) and convert the second column using the String to Number functions.
Try to take over the world!

Real-time PID control and continuous buffered acquisition. Does it work together?

I use the "real-time PID control.vi" that acquires single AI point and generate single AO point in every "while loop" iteration to control a piezo actuator motion. Simultaneously I need to do (in another loop) a continuous buffered acquisition of another two AI channels (in the same rate as first AI channel).
It does not work together.
Does anybody know how to fix it?
Platform: LabVIEW 6.1
Board: PCI-6024E

Hi,
I would try to avoid the idea of using a separate loop since the PID
loop is a continuous acquisition and will require un-interrupted access
to the Analog DAQ system of the board. The last thing it needs is for
you to attempt to start other AI functions at the same time.
Configure your AI in the PID loop to read in multiple channels (Just add
some more channels to the Input Channels Control. Separate the data as
it comes out of the AI single Scan function using Index Array or other
Array functions into that needed for the PID and that needed for your
other data (the example is already doing this to make sure it only gets
1 channel of data into the PID). If you don't need to sample all your
channels of data all the time you can throw some data away as
required.
Obviously your other channels are now arriving one sample at a time so
if you might need to build an array, insert into an array or use Auto
Index on the loop if you are data logging.
Regards,
Dave R.
varmih wrote:
> I use the "real-time PID control.vi" that acquires single AI point and
> generate single AO point in every "while loop" iteration to control a
> piezo actuator motion. Simultaneously I need to do (in another loop) a
> continuous buffered acquisition of another two AI channels (in the
> same rate as first AI channel).
> It does not work together.
> Does anybody know how to fix it?
>
> Platform: LabVIEW 6.1
> Board: PCI-6024E

Export Waveform Chart Plots data to spreadsheet file based on X scale (Time Stamp) min and Max Value

Hi All,
Query 1:I am trying to export the Chart data(Total plots 6 ) only between the X scale Min Time and Max time limit .
But couldnt able to achieve that progammtically.
is their anyway to achieve this.
Query 2:Also ,In chart their is an right click option to export data to excel,but when using this option the data get exported in its own temporary name(iv*****.tmp),i dont want this to happen.Instead the data expored using that option should be written in a file specified by me(everyting should happen in backend)
pls suggest the best solution for above 2 queries.
Thanks,
Selvan.

Hi selvan,
1) read the chart history (or better keep a history in your own shift register) and limit the data to the XMin and XMax values (read all those chart settings from its properties). Then save the data using WriteToSpreadsheetFile…
2) The right-click option is as it is. When you need different behaviour you need to program your own routine. Once you finished query 1 it will be no problem anymore to also solve query 2…
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Custom Time stamp control

Hi,
I'd like to know if it is possible to customize a timestamp wich have this format 00(H):00(M):00(S) to a format that could use and print hundred of hours 000(H):00(M):00(S).
What should I do to get that ?
Thanks.
Olivier

Hi Olivier,
It appears that you cannot do this directly from a built in function. What you may want to do is create a custom timestamp that keeps track of minutes and seconds. Then you may want to have a counter that increments when the minutes reaches 60 and concatenate the entirety as a string. I hope this helps point you in the right direction.
Best regards,
Steven

Time stamp and local time stamp

Dear sirs...
i am a little confused about the time stamp datatype and how to handle it in my applications. i want to display the time for every user in its time zone. so the fields in the database are timestamp with local time zone. is this correct?
i want it to be such that if one stores the time in USA time , the other can display that same data in UK time.
best regards

repost

Time stamp does not update automatically

Hi, All. I want include the time stamp (yyyy-mo-dd-min-sec) in the file name. However, the value of the time stamp does not update automatically/synchronizes with the computer clock at each new run. I need to do it manually with the right click and update the time to the current.
How can I solve this? Thanks a lot in advance.

What does this have to do with NI counter/timer hardware?
What language are you using and what function are you using to get a timestamp? If the language is LabVIEW, then all you need is Get Date/Time in Seconds. If you are using a front panel Time Stamp control, then you are using the incorrect function.

Add hours to time stamp

Hi ,
I have to add hours to my time stamp control.
I unbundle the time stamp cluster and get the hours, minutes, seconds , days..
To the hours , i want to add hour. If i add an hour less than 12, i get correct output, BUt hour greter than 12, Time stamp does not show anything. How to build this. Suppose i add 24 hours, Time stamp should show next day, the same time..
Thank you,
hema

Hello hema,
add just hours*3600 (to convert to seconds) to your timestamp without unbundle/bundle-operation.
Best regards,
GerdW
CLAD, using 2009SP1 + LV2011SP1 + LV2014SP1 on WinXP+Win7+cRIO
Kudos are welcome

Time Stamp Control and DST

Similar Messages

Maybe you are looking for