writing the file of waveform in .txt file

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• Get the name of file that uses the file adapter

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• Why DAQmx read 200714 error when you save the file?

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  Why the DAQmx bed vi I have this problem when the vi has been idle for 10 seconds then I choose where to save the file?  How can I fix this error?

  Hi child of pre-school age,

  I think your error might be caused by the read buffer overflow. my suggestions for you would be to either the following four ideas:

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  2. If you still want to read the data but also write data as well, I think you'd be best suited for use live TDMS. TDMS allows the user to stream to a reading of filewhilst.

  3. the configuration backup dialog box file before starting the acquisition. Download the user to enter all data in the file before you start to acquire.

  4. change the buffer to unlimited so that you have enough time to navigate the record window.

  If you send your VI I can advise others

  Let me know how you go,

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  Hello

  I have a use case where I write only 10 messages in a file using the file adapter. The 11th transaction I should write in another file. Can I do this?

  We have the batch during playback of the file. But can we have it when writing the file.

  Kind regards

  Aditya

  Hi Aditya,

  You can try NumberMessages, it can work for you, even if it isn't exactly what you want...

  NumberMessages

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  http://docs.Oracle.com/CD/E28280_01/integration.1111/e10231/adptr_propertys.htm#TKADP1737

  See you soon,.

  Vlad

• Import MATLAB generated the file ascii in the Analog Waveform Editor

  Hi all

  I tried to create signals by the Analog Waveform Editor. I have some Waveform generated from MATLAB and recorded as ASCII files, following the instructions on this Web page OR, but it did not work properly. For example, if I produce a column to fill with 0.5 and import the file into the analog signal generator, all I get is a huge series of random number. I missed a few steps in the import of the waveform?

  Thank you!!

  Just for your reference, I could almost in half the size of your file just by saving as .hws. Also to answer your last point, you may have issues opening / importing your .txt file because it may have been opened in another program at the same time. Make sure that you have closed it in Notepad or Excel or other programs which may still be locking on the reference.

  Kind regards

  Jason L.

• How to use the acquisition of input data acquire a signal at a frequency while writing to the file at a different frequency

  Hello I'm trying to read in a temperature of a thermocouple and displayed on a waveform graph and at the same time, I want to write data to a file at a significantly lower frequency.  Currently, I am sampling data acquisition at chaque.01s and I would like a sample to write to the file every 2 s.  I thought of activating/deactivating the option activate the relay every 2 s, but I don't know how to do that and I wouldn't be surprised if there is a standard way to do this, but I've not been able to find.

  Thank you

  Miguel

  

  If you are sampling of chaque.01s and you want to write a snack every 2 s, what about all the other samples?  You want to just throw away?  You read so 200 samples in 2 seconds.  But you want to write a sample.  You can do it if you don't mind losing the other 199 samples.

  You could use the elapsed timer function and the release of the elapsed time of a structure of business wire.  Put your writing inside the real deal function.  Nothing in the case of false.  Make sure that all of the timer to reset automatically.  If every two seconds, the case will be set to true, and will be called the write function.

• capture data using writing to the file position encoder

  Hello dear Sir

  can anyone help to check with my encoder to measure data?
  I connect the writing to the file of the measurement, but when I open the .txt file,.
  no result is, thank you very much for your help

  
  

• Writing data to the file when the trigger is activated?

  Hi all

  I'm quite new in lab mode, and I find it difficult to find a solution to this problem quite simple. I installed a gauge on a tank, and each time, he reached the limit of overflow of the VI should write all data to a file. I implemented my data tables, but I am struggling to find a way to have the VI writing the data when the specific trigger (the tank overflow) occurs. I'm sure the solution is quite simple, but was faced with this during a few days now so I decided to ask for help.

  See you soon,.

  Gasim

  Gasim wrote:

  Seems to work, but the program stops when the trigger activates and asks you a file name to write on and then reset the whole process. Is that anyway so he can write the data automatically, without any interruptions?

  Yes, simply son by the name of desired file in VI of file write. If a cable it won't entice.

• Save the Studio measure waveform graph as a file for reading later

  Hello

  I would like to know if there is an easier way to record data are rendered on a waveform graph (configured as a graphic of the band) to capture incoming data in the code and send copies of it to a file. It would be nice if there was a method to do this, with all relevant metadata stored in the file (color, etc.). Better yet, the file could then be opened in a labview application (for example, a TDMS file) for later review.

  Thank you.

  PS. I use VS2010 and MS 2010.

  So, it looks like you already have all the data points. For metadata that you mentioned, line color, plot colors, point colors, line styles, etc. are all accessible from the properties so if you wish, you can retrieve all that data.

  I think that upon return from t0 is the same compensation history, you can use the ClearData() method.

• writing data to the file of measure

  Hi all

  I'm trying record rpm with an encoder in quadrature (200 ppm) in a LVM file with a timestamp of each saved value. It seems to work, except that it registers more values in the file LVM I want. I put the DAQ Assistant to save read 1 sample at a frequency of 1 Hz. However, when I open the file LVM generated by writing custom file Express VI, sometimes I get 42 values per second, sometimes I get 13 and so on. If I don't get a constant number of measurements per second. How can I specify just measure of folder 1 per second, or 5 measures and so on?

  I'm using LabVIEW 2011. The encoder values be read as a frequency and then converted in rpm. Thank you! Files and images attached.

  Your Express VI is not configured to play at 1 Hz. The synchronization method is the default value, which is used for the reading of the frequency as you do. This basically means you're sampling on the rising edge of the input signal, then you're really sampling rate at the same rate as your frequency.

  To do what you want, you can change to mode 1 sample (on request) and add a 1000ms waiting your loop.