Problem with Labview communication with Arduino Uno

Similar Questions

• Connection problems with Arduino

  Hi all

  I try to get serial with my Arduino board, but I have a few problems. The card is programmed to read data series to turn on LEDs and switch off. It works with the monitor serial Arduino to COM4. But when I try to write similar instructions with Labview using VISA, it seems that I can't use it. I think I might be a problem with the unit. He would appear in MAX? Because I see not all devices when I open MAX. In addition, by using VISA, VISA Resourse name does not appear any device (I expected to see something like ASRL::Inst...)

  Furthermore, I use:

  -Arduino duemilanove (FTDI driver version 2.60.00)

  -Labview 2009

  -Window 7

  Sorry if some information is missing, it is my first time writing on the forum. If someone could give me aid, but it needs more information, please let me know.

  Thank you very much for all type of help.

  Jose

  You say that you use VISA, but you have installed?  The error dialog box you get would be typical of someone who has no VISA drivers installed.

  I had recommended in the drivers DVD to burst again and running that.

• Problems with arduino labview Interface

  I have the labview-arduino interface, but the problems came when I run the program, sometimes it work perfectly, but sometimes (almost all the time), I can not connect this time, the series of programs and do not show any kind of problems, I can see that in the resourse computers two visa, I don't know if it's because she I soppose comunication , but my arduino do not work, and I can use perfectly with the arduino IDE, but not with VISA, I used the Arduino IDE to be shure that works my Arduino board

  so if you know how to solve this problem, please help me!

  Thank you!

  There is no need to host files somewhere else.  Feel free to download on the forums and attach them to your message.

  Minor first comments.  Why are you re-reading your every 2 seconds config file?  Expect you to change?  If it is then played once and not proofread.

  I think it would be better if you stopped when an error occurred, you can do this by wiring to the RO error enter the stop condition, or use the arithmatic composed with gold.

  But I think the main question you have, it's that your Arduino reference may be whipped out if you do the wrong things.  If your equal comparison is false, you go to the wrong case, where you are not passing the arduino reference.  So when you go to close you don't close your reference and your equipment will always be open, and you try to run again will result in an error.  For even if your loop runs for 0 iterations your reference is lost.  An updated version, which has some of these changes is attached.

• LabVIEW arduino uno bad data transfer

  Hello

  I have some problems with the transfer of data from the arduino uno to labview.

  I did a VI where I can control the power of a heater with measurements of temperature with arduino uno.

  The problem is that from time to time the incorrect temperature is captured in labview by missing the number or a number, for example. LabVIEW gets 1.25 ° C instead of 15.25 ° C or 2000 ° C instead of 20.00.

  When I look at the program arduino tracer series these errors do not occur. So I guess it will be a problem with the settings of labview or my VI.

  Parts joined a set of data extracted from the VI and VI himself and the arduino script

  Yes.  The Subvi has 2 major problems.

  The first is as I said.  You set up and close the serial port each iteration.  There is a risk that the device could be send data that you won't miss the moment, that the port is closed.  (Even if she doesn't really explain why you miss the decimal point in the middle of the data bytes.  Serial ports must be configured and opened when the program starts.  Writing and reading within the loop.  And not closed when the program ends.

  The second major problem.  Why you have the property Bits of data cable up to the number of bytes to read.  Bytes and pieces is two different entities.  And in this case, the data bits is the number of bits of data defined by the configuration of the serial port.  Probably 8 and would still be 8 and has nothing to do with the number of bytes actually in the serial port.  Number of bytes to read is how many bytes you want to actually read the serial port, could be 1, 50, 1000,...

  Is your device send data continuously without asking?  Should I use a stop character?  If this isn't, by using a stop as a return character, carriage or line break, then it should.  It will help you to break the ASCII data that crosses into packets.  Configure your serial port is set up to search for characters of endpoint and it would be a line break character. Use the termination character, and tells your VISA read an arbitrarily large number.  A number that is larger than the longest message that you expect to receive.  The VISA read will return as soon as she sees the character of judgment and you give a full data package.

  It is often a good idea to have a communication protocol of request/response with your device.  You write a command that says 'give me the value.  It reads and responds to the back and gives value.  Otherwise if he sends just data continuously without asking confirmation and that you do not read fast enough, you could extend your serial port (which would give an error and you could lose data), and even before that, you could read old data which is at the front of your stamp series while your device has already sent hundreds of data points more after that.

• Timed signal generation TTL with the NI USB-6501 to be read by Arduino Uno

  First of all, I want to apologize - I am very, very new to LabVIEW and brand new to the development of the software of control equipment in general. I tried to find an answer to this question already, but I'm not entirely sure what I'm looking for.

  I have currently a work program LabVIEW which operates a gun card NI USB-6501. Due to the nature of having a machine that springs from a powerful beam of electrons, we want to assure you that if the computer controlling stalls or fails for any reason, we have built-in security that can stop the gun. Our current idea is to connect an Arduino Uno on a PIN on the USB-6501 and LabVIEW to generate a timed signal, which may read the Arduino. If the signal fails (indicating that the control computer has queued or off), the Arduino triggers a power relay that is independent of the control computer and turns off the gun.

  I understand that the USB-6501 operates on TTL signals, so the signal that I should be something in the sense of "output TTL high, wait 1 second, output low expectations, a second, repeat TTL ', but I have no idea how to go about programming in LabVIEW. My first thought was that it is a square wave by using the function "simulate the signal" output, or to have trigger an iterative Boolean signal, by using the function 'DAQmx write', but I don't really understand how do to implement or another idea, or if an idea would even work.

  Any advice would be greatly appreciated.

  Hi Elizabeth,.

  THINK THE STREAM!

  When do you DATAFLOW think everything falls in places!

  Several problems:

  -You have to put that MAKE impulse VI in his own loop parallel to your main VI!

  -When you place this generation of impulses in the effects loop ("TTL arduino low-high") you should put the CreateTask and StopTask outside the loop: no need to create/stop the task in each iteration.

  -Why are there points of constraint to waiting functions?

  -Why is there bent wires? You know Ctrl-U?

  -LabVIEW comes with an extensive library of example screws: you looked at all these examples DAQmx?

  -Suggestion: Learn more about the "structures of producer-consumer"!

• Problems with migration from LabVIEW 2012 VBAI 2012.

  Hello.

  Someone had problems with the migration of the VBAI 2012, 2012 to labview?
  I'm filing this disadvantage when use migration in VBAI everything works fine, when I use LabVIEW with 'Vision Acquisition Express' for example, everything works as it should.
   
  The solution I've done has been to work with the control VBAI API and it worked perfectly, but I wonder, if a bug or a known error on this process.

  Thank you.

  Finally, I solved it by installing the "Vision Development Module 2012 SP1". With this update worked correctly migration.

• VISA LABVIEW WITH ARDUINO ERRORS

  ANY1 CAN HELP ME? AND ANSWER ME?

  I have attached my DAC08 program linked with arduino.when, I command you to serial arduino DAC monitor responds means arduino prog is ok. but when I have LabVIEW command it's not working. I don't want to use LIFA. I just wnt to use VISA to make the animals to my arduino on selection and my arduino to be programmed for each time a hexadecimal string of particular comes from visa what corresponding hexadecimal code must be routed to the device.labview interface is not reached.

  I could not attach the file of arduino prog .ino. So I copy the same here pastin

  #include
  #include "htoi.h".
  void setup()
  {
  Serial.begin(9600) (9600);
  DDRC = 0XFF;
  }

  void loop()
  {
  char a = Serial.read ();
  Switch (a)
  {
  case "164":
  PORTC = 0XFF; THESE VALUES MAY VARY AS YOU WANT
  break;
  case "B":
  PORTC = 0 X 00;
  break;
  case 'C ':
  PORTC = 0XC0;
  break;
  case would ": //MORE CASES CAN BE ADDED for the purpose of TESTING IF NECESSARY"
  PORTC = 0XD0;
  break;
  by default:
  PORTC = 0 X 00;
  }
  }

  and print screens to block dia LabVIEW

  Please answer quickly m really in need

  concerning

  rich

  
  

• problem with a block of memory in labview 2009

  Hi all

  I have "ERROR: MapLib:979 - LUT4 symbol" during the compilation process (lots of errors like this), and I discovered that the reason of my problem is block of MEMORY.

  To be sure that the problem is in this block, I did a very simple project in LabView 2009 (on FPGA Target PCI5640R) only with the use of this block you can see in the photo, as well as in file test_memory block.lvproj attached link: https://www.dropbox.com/sh/u87f1oihelmm4dq/Jo_6-bICSf

  

  I have a problem with compiling VI with this block, and I have so many errors like:

  ERROR: MapLib:979 - LUT4 symbol
  "window/Thatcher/n_00000036/nSCTL_00000013_00000014/n_000000A3/cOutLoc<0>1.
  (output = window/Thatcher/res000001ed_wi<2>) is the input signal
  "window/Thatcher/res0000020d_wo<1>" that will be deleted. See Section 5 of the
  Map a report file to find out why the input signal will become conveyors.

  or

  ERROR: MapLib:978 - LUT4 symbol
  "window/Thatcher/n_00000036/nSCTL_00000013_00000014/n_000000A3/cOutLoc<23>1.
  (output = window/Thatcher/res000001ed_wi<25>) is an equation that uses
  input pin I2, which no longer has a connected signal. Make sure that all the
  the pins used in the equation for this LUT are signals that are not cut
  (see Section 5 of the report file map for details on which signals were
  adjusted).

  Entire report, you can see in the file report.txt on the attached link.

  I would appreciate if someone could take a look at my problem with simple project and suggest me a solution.

  I'm really stuck with my biggest project which need to have this memory block.

  I'm looking forward to hear from you,

  King looks

  ING. Damir Hamidovic

  Hi all

  I find a sollution to my problem.

  In memory-properties-general-setting up, I changed the block to look up Table memory, and I compile memory.vi and run it successfully.

  I did change as you can see on the picture:

  

  Just, can you tell me is it all "bad properties" and limits the use of this type of memory (Look up Table) of the implementation?

  King looks

• Problem with window painted and scrollbars when editing (LabVIEW 8.0.1)

  I'm under LabVIEW 8.0.1 in Windows XP SP3.  For my main VI, I came across a strange problem about 5 months ago.  The front window - both in edit mode and run mode - arrested repaint itself on the right side which is no longer visible when you scroll from top to bottom, but also visible overlapping Windows.  Coinciding with the repaint problem, both bars scroll search disabled grey arrows and no boxes in the bars that you can click and drag to scroll the window.  The scroll bars work still partially if you pass the mouse over it and roll the mouse wheel but does not work by clicking and dragging.

  The façade has a lot of controls and indicators, including containers of tab control and is greater in the horizontal directions and vertical so the two scroll bars must be active.  But I deleted everything in the Panel before and everything in the schema and the problem persists.  If the problem is not directly related to a control/led display.

  I saved the simple VI to this problem (using a line of large text and a high box rounded to test), and then created a new VI and copied the two elements at the new VI.  This new VI didn't paint it and the problem of the scroll bar.  The two screws are slightly different in the memory usage and the revision number (bad is review 1785 and the good is revision 3), but otherwise the two screws are identical.  I have attached two screws at this announcement.  When you first open the bad VI, you will see the scroll bars disabled while the good VI has active scroll bars.  To replicate the repaint problem, scroll the window up and down with your mouse wheel.  If it's good when you first open the VI, click on another window, then click on the window of VI and try again the mouse wheel.  This by clicking sur-loin-and-return always causes the problem of repaint for me.  I tried the screw on two different computers, both running Windows XP SP3 and LabVIEW 8.0.1 with identical results.

  Here's what I discovered simple troubleshooting with the screws:

  always off scroll bars

  * repaint the problem in the main window for larger then 680 pixels of window widths

  * repaint the problem in the menu bar of the main window for widths of more than 646 pixels

  * entire window becomes disabled than 1348 pixels window width

  * can paint window minimize and restore, but only repaints only once

  * scrollbar boxes sometimes flicker in the display, but then disappear

  * Scroll left and right hovering mouse over the bar and horizontal scroll by using the mouse wheel

  I found something similar on this forum (thread: problem with refresh of façade)-it could be linked to the CAR on the Panel being offset internally.  I don't have access to LabVIEW 8.5 or later and do not plan to upgrade - I have not tried the trial version, as this user has done.  I could try to copy and paste my set of the block for a new VI diagram but the VI is so important I'm afraid something would break, plus I don't want to do it again in a few months.  The problem seemed to occur after a certain number of stops (or revision number).  I save copies of backup often and when the problem first happened, I was able to go to a previous version, make the missing changes and save it without any problem, but this only delayed the problem and he came later.  It is therefore perhaps the revision number.  It seems not related to a change or a particular addition in the front panel and the graph.

  The attached picture shows the repaint problems and scroll bar in bad VI.

  This raises a question I have - if this problem is a bug has been fixed in 8.5 and later, is it possible to apply bug fixes for older versions?  Or what I need to pay for an update fix these bugs?

  Seems that something got corrupted with this VI. Things to copy on a cool VI and things should be OK.

  See also this recent report of a similar problem.

• a problem with one of the files in the TestStand\AdapterSupport\LabVIEW directory

  When looking at the module a LabVIEW VI called for TestStand, I get the following message:

  A problem with one of the files in the TestStand\AdapterSupport\LabVIEW directory.  Please reinstall or repair.

  I made the mistake of cleaning C: in my computer.  Clean the C:\National Instruments downloads

  Why would someone put bits of applications or modules, etc. in such a directory?

  I'm not too crazy about restoring 11FR in this folder.  It's just crazy!

  If anyone has encountered this before?  No "easy"? outside re - install TS...

  Side note: I do not touch anything in the \Program files. National Instruments\TestStand\AdapterSupport\LabVIEW

  What version of LabVIEW and TestStand do you use?

  In 2012, TestStand, this directory is mapped to:

  C:\Documents and Settings\All Users\Documents\National Instruments\TestStand 2012\AdapterSupport\LabVIEW

  Have you tried mass compiling the screws in this folder?

  I had to create a new 'TestStand - default values XX.llb"file, where XX is the last version of LabVIEW you use, but I have not seen this message before.

  Good luck

  PH

• LabVIEW 2010 FPGA: problem with the mean and the variance Subvi

  The Subvi 'Average, Variance and standard deviation' seems to not work properly. The calculation of the average value is ok but std and variance are bad and the results change with representation in an unexpected way. Everyone knows about this problem? Is there a problem with the use of this function?

  Thank you

  Andrea

  Hello Andrea,

  Here is a test for the configuration of your VI (entered I16, 16 samples), saved in LabVIEW 2010 SP1 and the new Subvi. It is relatively simple to adapt it to other configurations, but it does not reconfigure several nodes and constants on the diagram. Let me know if it will work for you.

  Kind regards

  Jim

• Problems with the resource of labview execution 2 visa

  I use two loops in a labview code all-in - connects to a motor controller and other is used to connect to a multimeter agilent. As soon as I run this VI, the loop to connect to the controller stop working and only used to configure agilent machine works. If I remove the second loop (connecting to the computer of agilent), the code works fine. I guess it's a problem with the execution priority. Could you please review the attached code and let me know any problems with it.

  COM1 and Com3 share an interruption.

  Go to the BIOS of the computer and set the port to Com3 to the Com2 port, then they will be on their own interrupt and see if that helps.

  FYI

  COM1 and Com3 share IRQ3

  COM2 and Com4 share IRQ4

• I have a problem with the simulation in Matlab 6.5 and LabVIEW for PID controllers

  I have a problem with the simulation in Matlab 6.5 and LabVIEW. I have a few methods for granting regulators PID in MATLAB to go but not of LabVIEW. Degree of international teams of two transfer but when I passed to the fourth degree is no longer working. We have changed the formula to calculate the parameters for the fourth year and gave me some good values for assignment of Matlab, but when I put on LabVIEW are not resolved. the formulas are available in PDF format and are. Please help me and me someone if possible. Thank you
  Lim.4 generation in comparison methods and the MATLAB program settings are for the service of transfer to the second degree.

  Hello Lascarica,

  I noticed that you are using the screw of PID. Gains on these screws are based on TIME instead of GAIN. You should be able to build a PID regulator and vary the gains and then compare the results.

• Communication problem with the printer

  I'm trying to print on a printer Lexmark 1200 series of a Toshiba laptop. Laptop computer identifies the printer is the printer is displayed in the control panel. Whenever I try to print even if I get a message that says: "communication problem with the printer. Any help is appreciated.

  Hi Nick,

  1. What is the exact model of the printer number?

  2 is this problem limited to any specific application such as Internet Explorer, Microsoft Word etc.?

  It seems that some of the 1200 Series printers is not compatible with Windows 7. You can enter the number of exact model and research for more information.

  http://www.microsoft.com/en-us/windows/compatibility/win7/CompatCenter/ProductViewerWithDefaultFilters?TempOsid=win7&Locale=en-us&TextSearch=lexmark%2B1200%2B&Type=Both&CurrentPage=0&TotalPages=1&ShowCriteria=0&SortCriteria=Relevance&Compatibility=Unknown&LastRequested=14

  If the printer is compatible and you are always faced with the question, you can proceed with the steps.

  Method 1:

  Run the troubleshooter and update printer drivers.

  Solve printer problems

  http://Windows.Microsoft.com/en-us/Windows/printer-problems-in-Windows-help#fix-printer-problems=Windows-7&V1H=win8tab1&V2H=win7tab1&V3H=winvistatab1&v4h=winxptab1

  Method 2:

  If the problem persists. I suggest you perform the steps described in the article.

  "Communication not available" or "Document Failed to Print" Error Message and the print job hangs in the print queue

  http://support.Lexmark.com/index?page=content&ID=SO4473&locale=en&UserLocale=en_US

  Note: Antivirus software can help protect your computer against viruses and other security threats. Have a computer without any security software can cause a potential danger to your computer. Therefore, make sure to activate the firewall and security software once you are finished with the test.

  Hope this information helps. Response with status so that we can help you.

• error message "there is a communication problem with the web server."

  I'm trying to connect to three rivers FCU website www.3riversfcu.org and I get the message error "there is a communication problem with the web server." I am running Windows 7 on Toshiba laptop. No idea how to solve this problem? Something in the settings?

  Hi, Mayhem15,

  See if this troubleshooting help.  It was written for Windows XP, but in many cases, these documents still apply for more recent versions of Windows.

  How to troubleshoot possible causes of Internet connection problems in Windows XP

  http://support.Microsoft.com/kb/314095