Write data to a file on an SD card using a cRIO

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• Satellite P500/01R reads the data, but cannot write data on CD files

  I recently bought a laptop Satellite P500/01R. I am able to read a data CD, but can't write data on CD files. The CD is read/write.

  Any ideas?

  Hello

  Have you tried different burning software?
  I m using Nero and in my opinion one of the apps better combustion.
  Here, I can choose between CD, DVD, DL or Blueray (only possible if the CD/DVD drive also supports this).

  Have you also checked diffΘrents CDs from different manufacturers?
  You should do this since not all disks are 100% compatible.
  I had several problems with different CD or DVD in most of the cases it was a compatibility issue, I tried TDK and this kind of drive is compatible with my CD/DVD drive
  I m using the standard of R.

• Write data to text file generates the error

  Hi all

  I need to write data to a file using TestStand and I configired the entrance and outside like below, but I get the error message like ' an error occurred 'Write' calling in 'ITextStream' of 'Microsoft Scripting Runtime' [error Code:-2146828234].

  I followed the same procedure for reading text that works very well for me.

  Hope others might have faced the problem / or I do something wrong.

  Do what is necessary.

  

  Found problem while opening a file I used IO Mode ForReading instead of ForWriting.

  Unnecessarily the thread created, but then hope this can help someone later when they deal with a particular issue.

• DASYLab how to write data to a file every 15 minutes

  Hi all

  I use dasylab and datashuttle/3000 to record data. What I want to do is to write data to a file every 15 minutes. I use the milti-file, which can write data to the file diffenret, but how do I control the timing, as the journal data every 15 minutes automatically.

  The other problem is that I use FFT analysis of the frequency spectrum. How can I determine the value of frequency where the peaks that happens.

  Thank you

  Write less data in the file that you have collected requires the reduction of certain data.

  There are three techniques to consider.

  With an average or an average of block - both reduce the data by using a function of averaging, defined in the module. To accomplish the reduction of data, choose block or RHM mode in the dialog box properties, and then enter the number of samples/data values that you want to reach on average.

  Average - when you reduce the data, you also should reblock data using the block length of the change in the output parameter. For example if you enjoy at 100 samples/second with a block size of 64, the average module configured on average, more than 10 samples will take 10 times longer to fill a block. The initial block represent 0.64 seconds, the output block represent 6.4 seconds at a sampling rate of 10 samples/second. If you change the size of output in one block, the program remains sensitive.

  Average block - average values in a block against each subsequent block, where the average is based position. The first samples are averaged, all second samples are average... etc. The output is a block of data, where each position has been averaged over the previous blocks. This is how you will be an average data FFT or histogram, for example, because the x-axis has been transformed in Hz or bins.

  Second technique - separate module. This allows to reduce the data and the effective sampling rate jumping blocks or samples. For example, to reduce the data in 1000 samples / second to 100 samples per second, configure the module to keep a sample, jumping 9, keep one, jumping 9, etc. If you configure to skip blocks, you will not reduce the sampling frequency, but will reduce the overall amount of data in a single block 9, for example. It is appropriate for the FFT data or histogram, for example, to have the context of the correct data.

  Finally, you can use a relay and a synchronization module module to control. For example, to reduce a sample data every 15 seconds, configure a generator module of TTL pulses for a cycle of 15 seconds of time. Connect it to a Combi trigger module and configure it to trigger on rising and stop the outbreak directly, with a trigger value after 1. The trigger output connects to the X of the relay command input.

  In addition to these techniques, you can change the third technique to allow a variable duration using a combination of other modules.

  Many of these techniques are covered in the help-tutorial-Quickstart, as the data reduction is one of the most frequently asked questions.

  In regards to the FFT... use the module of statistical values in order to obtain the Maximum and the Max Position. The Position of Max will be the value of the frequency associated with the Maximum value. The output of the statistics module is a single sample per block. Look at the different FFT sample installed in the worksheet calculation/examples folder.

• Try to write data to the file, but error 200279

  I have problems when writing data to a file. 10 seconds in the recording process, I get the error 200279. I did some research on the subject, but I am unable to corect my code. I think I want to increase the size of the buffer, but he prefers, I suppose, to read the data more frequently. The way that I save my file is, before starting the VI, I attribute a location and name of the file (e.g. data.csv). The date and time is added at the end of the actual when file the I start to record the data (e.g. data_07-26 - 13_122615.csv). If the file does not exist, it creates a new file, and then adds the data of this file after each iteration of the loop. The reason why I did this way was so I don't have to worry about running out of memory, but apparently my code is wrong.

  

  

  I will include a copy of the faulty section of my code. Any help would be greatly appreciated.

  Thank you.

  Your problem is that the writing on the disk is slow.  It is pretty slow so it causes your DAQ buffer overflow and cause error and loss of data.  What you need to do is to implement a producer/consumer.  This will put the data acquisition and recording on the disc in separate loops.  This will allow data acquisition work at speed, that he needs to deal with incoming samples and writing on disk can run at all what pace, he can.  You send data from data acquisition to the loop of logging using a queue.

  You can also think about changing how you write to the file.  VI is constantly open and close the file, which is a very slow process if you do it inside a loop.

• Cannot write data blob image file

  Hello

  I am trying to write in a persistent storage of an image blob data... even if I don't get an error, that nothing is written

  window. rootFS.getFile (window. mainDirectory + ' / ' + $scope.) sCurrentDate + "/" + filename. substring (file name of0 . lastIndexOf ('.')) + '.jpg' {create:true} { function(file)

  file.createWriter (function(fileWriter) {}

  fileWriter. write (oXHR. ( responseText) ;
  fileWriter. onwriteend = function (e) {}

  Console. Journal ("file image = >""") ;
  console. Journal (e) ;
  console. Journal (file) ;
     });

     };
  { } { function(error)

  Console. Journal (error) ;
    });
  } { function(e)

  Console. Journal (e) ;
  });

  honestly, I don't know what to try anymore

  Good. So something has changed at the same time, because in your OP, you wrote:

  nothing is written

  and now you say:

  the file is created, but the image link seems broken

  All plugins:

  1. the plugin file is integrated into the plugin to transfer files, so you should not the former.

  2. There is not these plugins by these names on the repo of old, obsolete "bmp".

  3. the latest versions of these plugins to the NPM are 4.2.0 and 1.5.1 so you have included older versions

  4. you must use the latest syntax and NPM and therefore write:

  Now, what is "the link of the image" and how seems to be broken?

• Can I write data to a file *.xlxsx without screw the Excel formatting?

  I want to add LabVIEW generated in a file nicely formatted *.xlsx, with all the right borders and the width of the columns, etc. data programmatically.  But whenever I try to add data to LabVIEW, xlsx file format gets screwed up and the file is corrupted.  Is there a way to get around this?

  Thank you!

  -FB

  It will probably be easier to use ActiveX control Excel and edit the file in this way, if you have this option, instead of writing the XML directly.

• How to write data in text file

  Hello
  
  When I save the following code in a package as a procedure.
  He made a mistake
  
  (1): PLS-00201: identifier ' TEXT_IO. Type_de_fichier ' must be declared
  
  
  
  code
  ===
  
  PROCEDURE prc_writefile
  (v_fname IN VARCHAR2,
  v_input1 IN VARCHAR2,
  v_input2 VARCHAR2)
  IS
  
  linebuf VARCHAR2 (5);
  in_file Text_IO.file_type;
  OUT_FILE Text_IO.file_type;
  
  BEGIN
  -print
  OUT_FILE: = Text_IO.fopen('C:\saved_log.txt','a');
  Text_IO. Put_line (' out_file,' updated a file ' |' test data ');
  Text_IO.fclose (OUT_FILE);
  
  
  EXCEPTION
  WHILE others THEN
  MESSAGE(SQLERRM||) e '|| SQLCODE);
  END;
  
  END;
  
  
  ===========
  
  
  How to reach the Text_IO package built to this
  
  
  Rgds
  
  sexy

  Vanessa,

  Text_io is built in package provided with Oracle Forms but not db. If you need manage files db level, use utl_file.

  Thank you
  Raja.

• How to write data in an existing database table in sql using table in lab mode

  I am trying to write the data to an existing table in sql databse.but I don't know how to get it done me .plz help

  The error text is clear: the data provided does not match the number of columns. Your insertion data have 3 columns, how is appointed in the control of columns?

  It would be easier if you attached the VI with orders paid at the current values as default value.

  /Y

• How can I write snapshot of my data to the file measured every 5 seconds

  Hello

  I try to take a snapshot of my stream once every 5 seconds and write it to a. File LVM. I have problems with the VI "write to a measurement file. The pace at which it writes data to the file seems to be dictated by the 'Samples to Read' parameter in the DAQ assistant. I tried placing the VI 'Write in a file measure' within a business structure and the launch of the structure to deal with a "time up" VI. As a result only in a delay of 5 seconds before the insiders 'Write in a file as' VI. Once the VI 'Write in a file as' is launched, it starts writing at 20 x per second. Is there a way to change it or dictate how fast the exicutes VI 'Write in a file measure'?

  My reason for slowing down the write speed are, 1) reduce space occupied by my data file. (2) reduce the cycles of CPU use and disk access.

  The reason why I can't increase the value of 'Samples to Read' in the DAQ Assistant (to match my requirement to write data), it's that my VI will start to Miss events and triggers.

  I don't know I can't be the only person who needs high-frequency data acquisition and low-frequency writing data on the disk? However, I see a straight road to key in before that.

  The equipment I use is a NI USB DAQ 6008, data acquisition analog voltage to 100 Hz.

  Thanks in advance for your help

  See you soon

  Kim

  Dohhh!

  The re - set feature has not been put in time elapsed VI!

  Thank you very much!

  See you soon

  Kim

• How to write online differt data in .txt file

  Hi all
  
  I'm tring to write data to a file using utl_file,
  the first cursor loop writing data on the first line of the file using the
  UTL_FILE.put_line (...);
  end of the second cursor loop write data online secion of the same file using
  UTL_FILE.put_line (...);
  
  file format, it gives us as .txt;
  
  problem with which we are faced is when you open the file in Notepad all that data is displayed in one line...
  
  files even if we open an other tools such as edit more, word pad etc it showing the Formate of writing (line by line)
  
  Can help a whole on it to define configurations in Notepad? /

  As others have said it looks like a difference in operating system.

  If your Oracle is installed on a UNIX based server then the file will be written using Unix style line breaks that are just newline characters.
  In Windows environments a line break is considered to have been made of the pair of characters/line carriage return, not just the line break.
  Some applications such as MS Word or Wordpad can read Unix linefeeds style and interpret them as imagine you it as a line break. However the notebook doesn't work.

  When you transfer the file from Unix to Windows, usually this is done using an FTP based mechanism. If you transfer the files in binary mode FTP, then each byte of the file is transferred because it is UNIX, and the file will essentially be a unix on a windows system file. If, however, you transfer the files (from Unix to Windows) using the ASCII FTP mode, then whenever FTP encounters a newline character it will convert to a pair of return newline/carriage of characters, so that the file is correctly displayed in Notepad. Even if you transfer files from Windows to Unix in ASCII mode, then return carriage/newline pairs of characters are converted to just one line break character to make the file compatible Unix. Note, you should not transfer binaries in ASCII mode as it may corrupt and them, it is only intended for text based files.

• Delta t do not update using write in the measurement file

  I write data to a file that is collected with a dt = 0.005 sampling interval (but no hardware DAC.   I would like to save the data in a file LVM with a column, the timestamp and the second data column, and I use the Express VI 'Write in a file measure' in the following Labview code snippet:

  

  The value of the local variable dt is 0.005.   The delta T is saved in the saved file, but the timestamps don't change the initial value of o, o:

  

  What Miss me?

  Thank you

  John

  I wouldn't really call it a workaround solution. This is the expected behavior.

  Build and write like a table and your waveform will be saved correctly.

  If you are going to write a point at a time, all you have to do is to keep track of what you want to use when you build your unique point to t0 and wiring waveform.

  EDIT: Is the column name 'Untitled' bug your client at all? It would have upset me. You can fix it by set the attribute of waveform for "NI_ChannelName."

• How to write data in an Excel spreadsheet protected (with unlocked cells)?

  Hello!

  I have LabVIEW 8.2 and I often use the report Generation Toolkit for Microsoft Office' to save data in Excel spreadsheets. So far, I only used the leaves unprotected.

  But right now, I have an Excel worksheet protected by some cells unlocked. If I open the file using Excel I can fill these unlocked cells without any problem. However, I am not being able to fill these cells unlocked using LabVIEW and the Toolbox. I have a few questions:

  (1) is it possible to use LabVIEW to write data in a protected Excel worksheet, even though she has unlocked the cells?

  (2) if it is possible, how can I do that?

  OBS: I noticed that if I unprotect the sheet, I can write data to the file. But I don't want to be protected and the protection of the sheet, since users will not have the password.

  I hope that I was clear. I really appreciate any help you can provide.

  Thanks for the replies.

  Use ActiveX I could write the cells individually. By doing this, I could write in the unprotected cells without any problem. hour

  Probably, the Toolbox has been activated somehow the overall protection of the spreadsheet and Excel was not allowing writing.

  I had never used before ActiveX, so I had to learn it from scratch. I was looking for some tutorials on the internet but I have not found much information easy. What struck me the most help is an example that comes with LabVIEW named "Excel - write Table.vi. After some tests, I was able to open my data protected from the worksheet and fill in the unlocked cells.

  Thank you guys!

• Best way to record 50 kech. / s data to the file

  I'm reading a data acquisition data at a sample rate of 50 kech. / s and save it in a file. My application must run for at least a few hours. At first, I tried a model of loop of consumer-producer with a writing on measurement file Express VI, but he wrote the data too slowly, and my queue. Now, I'm trying to use the Write to VI file spreadsheet with or without a loop of producer-consumer model (see attached screws). Both seem to write data to the file, but no written records the number of datapoints I expect (the two have a lot less datapoints).

  What is the best way to write data to the file? Seems like a basic question, so if it has already been discussed in detail in another forum, or if there are examples of what someone could point me to, that would be appreciated also.

  Thank you!

  Hvea look at "stream directly to disk with TDMS in LabVIEW".

• Writing data to the file trigger

  Hello

  I'm new to Labview and I'm having difficulty trying to make this work correctly.

  What I do is followed the release of a transducer and when it reaches a certain critical value I want to write data to a file.

  I have this part works fine, but I'm currently using a higher vi / equal to check the value against the flow of the instrument, so when the value is less than the critical it to stop recording.  I want to continue to save for a number of minutes after reaching the critical value.

  How can I do this?

  Look at using the Express VI of elapsed time.  So when the condition is met, it triggers the VI and it will keep logging data until the Express VI shows the elapsed time.