vs flow network static variable

Similar Questions

• Deployment complete with static Variables cRio-9074 network errors, pc with executable file

  Hello.

  I am building an application runs on a machine without LabVIEW development system and connect via the network shared a cRIO Varibles (RT FIFO). I can successfully create an installer and EXE for PC and a RTEXE for the cRio. When I run on my development computer, the application is able to communicate using variables shared without a problem.

  But, when I install my application on another computer and connect the cRIO, I get the following error when you deploy shared variables when the application starts:

  Initializing...

  Calculating dependencies...

  The checking for conflicts. This operation can take a long time.

  Preparation itesm by download. This operation can take a long time.

  Deployment 169.254.84.198

  Deployment VariableLib.lvlib\\169.254.84.198\VariablesLib (:-2147467259,)

  LabVIEW: Unspecified error (Hex 0 x 800004005).).

  Completed with errors of deployment

  I created an exception in the Windows Firewall configuration. I have included the library of VariableLib on the EXE of RT, outside and inside the exe file to c:\.

  I am downloading the SP1 for LabVIEW and Module RT and decided to reinstall all the software on my cRio.

  Any help will be appreciated.

  Hello Luis.

  Thank you very much for your help. The Variable engine OR has been and should be included in the intallation.

  I was able to get the application running. I installed the System Manager distributed on the PC without LabVIEW to control if the library has been get deployed. Using what I found that another device on the network use the same IP address as the cRio and so the IP address has been lying to the deployment, but the device has returned an error. I just changed the IP address on the cRio and I was good to go. I have not reproduced on both devices such as network shared Variables suggests on some positions, nor I needed to modify the ALIAS files on devices.

  Best regards and thanks again for your time.

• Are published network shared variable write & read Atomic actions

  Hello

  I have a very basic question about shered (published network) variable.

  I think I know the answer already, but since I couldn't find in my documentation, I thought that it is more prudent to request...

  Are reading and writing on a shared variable of stocks Atomic?

  To be more precise: on my target real time I create an array with data (each element being the configuration item or a cluster containing name, value, and type) and when the table is finished I am this store in a published network shared variable.

  On my host (Windows), I'm voting (in a loop) until the table contains at least 1 item, when this is true I'm parsing all the elements in the table.

  Is there a chance that, reading of the shared variable, the table contains a subset of the original painting on RT target (i.e. the action of reading takes place while writing is still ongoing).

  Or is the action of reading delayed until the write is completed? (i.e. both write and read actions are atomic even over the network)

  I think the latter is true but not could find no evidence in the documentation.

  Kind regards

  SoC

  Hello Rob,

  Yes, you can access the entire value, data type - you use both. For the table data type, the integer value is actually the full picture. So, Yes, you can see reading and writing as Atomic actions.

  But, on the other hand, you can lose data if the RT system rewrites the variable before the host had the time to read. To avoid this, you can enable buffering for the variable. See the following links for more information:

  http://www.NI.com/white-paper/4679/en

  http://zone.NI.com/reference/en-XX/help/371361H-01/lvconcepts/buffering_data/

  Finally, you can also activate a FIFO RT on your target RT if you need to send data through the variable in a deterministic section of the RT. See also, more information:

  http://zone.NI.com/reference/en-XX/help/370622H-01/lvrtconcepts/rt_projectvariable/

• Passing an array via one RT FIFO network shared Variable, Code error-1950679034

  This should be simple.  I'm just passing through a table via a single RT FIFO network shared Variable element.  And yet I get nothing.  How could - not working?  What is this error?

  

  Well... it must have been some sort of thing calendar because adding an expectation of 100 ms fixed it straight up.

  Now don't feel ridiculous

  

• network shared variable treatment

  Hello everyone,

  Someone tried to link data from a network shared Variable to the query (running in a smartphone or Tablet) made with "treatment"? I know on the dashboard of data but I would like to know if West someone working with these two technologies. Thanks in advance for your answers, comments, suggestions, etc.

  Hello Bene

  Apart from the dashboard of data there are other technologies that you can use for mobiel applications in LabVIEW

  If you already use a shared Variable, then the easier and faster way to connect your mobile device and the PC on the same network and then simply use DataDashboard to read from your published variable.

  You can also create your own thin clients or http Web pages and link to labview, send sms, share a front panel to distance between computers

  Here is a link where you can read all about it

  Cheers and good luck

• Access the static variable...

  Hello

  I need a static variable which holds a QMap, for this example I'll use QMap.

  I created fresh new project and I changed in applicationui.cpp:

  ...ApplicationUI::ApplicationUI(bb::cascades::Application *app) :
          QObject(app)
  {
  ....
  
      initDatabase( 1 );
      initDatabase( 2 );
      initDatabase( 3 );
      initDatabase( 4 );
  }
  
  bool ApplicationUI::initDatabase( int index )
  {
      QString database = QString( "Db%1" ).arg( index );
      QString value = QString( "data/db%1.sqlite" ).arg( index );
  
      ApplicationUI::m_databases[database] = value; // undefined reference to `ApplicationUI::m_databases'
  
      return true;
  }
  
  ApplicationUI::~ApplicationUI()
  {
      if( ApplicationUI::m_databases.count() ) // undefined reference to `ApplicationUI::m_databases'
      {
          foreach( const QString &key, ApplicationUI::m_databases.keys() ) // undefined reference to `ApplicationUI::m_databases'
          {
              QString db = ApplicationUI::m_databases[key]; // undefined reference to `ApplicationUI::m_databases'
  
              qDebug() << "Closing [" << db << "]";
          }
      }
  }
  

  and in applicationui.hpp:

  ...
  
  class ApplicationUI : public QObject
  {
      Q_OBJECT
  public:
      ApplicationUI(bb::cascades::Application *app);
      ~ApplicationUI();
  
      static QMap m_databases;
      bool initDatabase( int index );
  ...
  };
  
  #endif /* ApplicationUI_HPP_ */
  

  As you can see commented in the code above, I get error:
  no reference to 'ApplicationUI::m_databases' applicationui.cpp

  I thought to access static variables that ApplicationUI::m_databases would work.

  Can you please guide me here.

  Kind regards

  Andy

  Hello! That's what I saw:

  (1) #include is present in the header file?

  ' (2) ' void ' is the syntax error:

  void MyClass::~MyClass()
  

  3)

  static QMap variable;
  

  is a declaration, you also need to create the variable in the .cpp file. Add to the .cpp:

  QMap MyClass::variable;
  

  4)

  MyClass::variable["one"] = "value One"; // doesn't work...
  

  "MyClass:" is not necessary. ['a'] variable should work too.

  UPD: this compiles (I replaced QMap QString with std::map with std::string for quick test):

  #include 

• Dreamweaver CS 5 do not support static variables PHP 5.6?

  

  I don't know what you mean by variables PHP 5.6. I just checked the online PHP manual, static variables are available since PHP 4.

  I also checked some PHP 5.6 features, such as constant expressions and functions variadique in Dreamweaver CC 2015.1. As I suspected, the built-in syntax checker does not support. To my surprise, the latest version of Dreamweaver does support the syntax PHP 5.5 . The syntax checker currently supports only PHP 5.4.

  As when Dreamweaver support the syntax PHP 5.6 or PHP 7.0, Adobe can only say. I'm not an Adobe employee, so I don't know.

• with respect to an application to turn with the help of a global static variable

  Hello. I've read a few articles on JavaFX competition, and as a beginner, so I have to practice on this subject. Now, I'm trying to implement a turn-based application which can be played between 3 to 6 players. Furthermore, I use a scene from a .fxml file and I need to update it properly depends on certain calculations of each thread (in other word players). My main problem is, I don't want to use a while loop that checks the status of similar game;

  While (GameState! = State.GAME_OVER) {}

  currentPlayer = GameBoard.getNextPlayer ();

  perform certain actions, calculations, etc.

  }

  So, I want to use threads to work instead while loop. I guess only with the help of the Service used to iterate class and assign the next player will be adapted to instead of using the while loop and the tasks for the calculation of each player, or waiting for a few responses of human players on the UI account, however, I am faced with two problems.

  1. It has a global static variable (like the GameState which is an Enumarator) determines the State of the game, so it should be updated and must be verified by each round. Is it possible to do this?
  2. How can I get rid off this while loop?

  I would like for each answer. Thanks anyway.

  It shouldn't make too much difference. The basic idea is that you have a model class that represents your state of the game (the class of game in example jsmith). When a player makes a move, you update the game state. Because this will result in changes to the user interface, this update must be performed on the Thread of the FX Application.

  If the player makes the passage is a human player, the move would be done by a user action (mouse click or press button, etc.); This will be handled on the FX Application thread in any case.

  When the State of the game changes so it is in an "artificial" player's turn to move, have the object representing the artificial player calculate his next move and then update the game state. Since it is a response to the evolution of the game state (it is the artificial player's turn), it will also be on the Thread of the FX Application.

  The only (slight) complexity comes if the calculation of displacement for the artificial player takes a long time. You don't want to perform this calculation of long duration on the Thread of the FX Application. To handle this, the cleaner is to start a task that computes the desired pass and then updates the status of the game when travel is ready. So, something like this:

  GameState game = ... ;
  // UI is bound to the game state.
  ExecutorService executorService = ... ;
  // ...
  
  final Player currentPlayer = game.getCurrentPlayer() ;
  final Task calculateMoveTask = new Task() {
       @Override
       public Move call() {
            Move move = // compute next move...
            return move ;
       }
  };
  
  calculateMoveTask.setOnSucceeded(new EventHandler() {
       @Override
       public void handle(WorkerStateEvent event) {
            gameState.makeMove(currentPlayer, calculateMoveTask.getValue());
       }
  });
  
  executorService.submit(calculateMoveTask);
  

  If you make a thread more than that, you're probably do badly... Also, there should be no need anything it either, will be held in a "global" static variable (the idea above is the only structural change you the example posted by jsmith).

• Display static Variable for the title.

  Hello
  I have defined a static variable Bank with the value of "Bank of India" in 10g and must mention that in the title. How to set the variable in the title. valueOf ('Bank'), @{biserver.variables ['bank']}, @{'Bank'} do not work, then how?
  
  Thank you
  Anitha.B

  check with this one - @{biServer.variables [' name ']}
  the variable name must be in a single quote.

  Pls mark if this can help...

• How to bind static variables?

  In ActionScript, I tried binds a variable to one static variable to another class:

  var watcher: ChangeWatcher = BindingUtils.bindProperty (Thi, "dataProvider", StaticClass, "staticVariable");

  The changewatcher fires when loading, but it fires at all during execution.  And Yes, the static variable has the [Bindable] tag next to it.  I encountered this problem a few times before, and I decided to just go around it.  However, for the sake of clean and efficient code, any help on this would be greatly appreciated.

  See the comments at the bottom of this LiveDocs page:

  http://livedocs.Adobe.com/Flex/3/HTML/Help.HTML?content=databinding_2.html

  If this post answers your question or assistance, please mark it as such.

• Definition of static Variables dynamically

  I have an application that instantiates a class several times. Many variables for the class is loaded from a XML when running and may vary each time the program runs, but will not change once the program is running.
  
  I want to initialize static variables in this category once and then rely on their values through the program. I could do this in the constructor function, but then I think that I do whenever I have to instantiate the class and so will suffer an excessive workload.
  
  1. is there a way to define static variables once and then let him go without a check in the manufacturer each time to see if they are a null value (and therefore put them)?
  
  2. do I create an instance of the class to set?
  
  Any help is appreciated.
  
  Bob

  > 1. Is there a way to define static variables once and then let it go
  > without
  > a check in the manufacturer each time to see if they are a null value (and
  > so
  (> Set them)?

  Just use dynamic variables. Keep all the in a class as follows:

  class myVariables
  {
  Objects: variables vars private;

  public void readVariable(name:String)
  {
  return variables [name];
  }

  public void myVariables (init:XML = null)
  {
  variables = new Object();

  default init
  variables.xxx = 5;
  variables. ABC = "test";

  If (init)
  {
  set variables for the values passed in the XML strcture;
  }
  }
  }

  MV = new myVariables();
  trace (MV.readVariable ("ABC")); Returns "test".

  You can keep the instance of this class as a global object is accessible for
  other classes without initializing it.

• Static variables in OAFramework

  Hello
  
  I'm stuck here seriously using static variables in my page. I have developed a few pages in OAFramework. I used more than 200 static variables in all pages. All is well for a single user. If more than 1 user using the page, the values are overlap between users. Now, I realized that its due to declare the values as static. How can I solve this problem?
  
  I would appreciate if someone can me advice on that.
  
  
  Jim.

  First solution to this problem is to convert all static variables to instance variables.
  However please provide details of the issue and why it is necessary to make them static.

  Abdul Wahid

• Static variables in the Page of the OFA

  Hello
  
  We have a requirement to show the popup message when changes are made in the page of the OFA. We use the static variable in the OPS page to store the initial values of some fields and whenever the popup needs to be shown, it compares the value of the static variable for the current value. If they are different then we are the message. It works perfectly fine when the page is accessed by the single user. But when several users access a single screen, it shows the message to a user even if the values are not changed by this user, but the other user has changed. My question is-
  
  1. do we need to use variables of session always for users multiple scenarios?
  2. How does the static variable in java? It is not unique to the session? If so, above the question shouldn't come.
  3. how to solve the problem above?
  
  Pointers on this would be a great help.
  
  Thank you
  Shree

  I did not understand the part same page can be accessed by different users. In any OA framework Page, the same page is accessible by several users. If you think abt the same data updated at the same time, then search functionality of Version number of the object in the context of OSTEOARTHRITIS.

  All instances of the VO are unique for each session. So no need to worry about this side here.

  Concerning
  Sumit

• Network shared Variable breaks rtexe

  I have a cRIO-9063 which I want to use for the control (PWM digital output for pumps signals) and measurement (temperature and voltage) of a system. In the ideal configuration the cRIO would be able to take measures and rebroadcast to a PC for monitoring and logging. The PC must be also able to change the digital output PWM on the cRIO lines. The cRIO should be able to continue to operate when the PC is not available. To do this, I use Scan interface for data acquisition and shared variables (single editor, no RT FIFO) hosted on the cRIO for network communication.

  I have developed the code for the target cRIO as well as my host PC meets my criteria. However, this code only works in development mode. When I try to build and deploy a rtexe on the cRIO, it does not work. I reinforced to the back and made a simple LED flashing user vi, ensure what I create and deploy properly. Slowly adding things to this flashing vi, I discovered it's shared network variables that break the vi once it is integrated into a rtexe.

  After flipping through other-related posts, I'll include the following:

  -There is no object on the remote VI front panel. Simply add a variable node shared is enough to break the vi (when it is deployed).

  -J' tried including my shared variable library in support of the construction directory, but what I saw there is not copied during construction or deployment. I manually copied the library to the /home/lvuser/natinst/bin/data / directory on the cRIO, then used an invoke node to deploy the cRIO variables when the software starts first. Even when you include a delay of 10 seconds after the invoke node, it did not work, just a mistake of 1043 at "the method or property is not supported in this version of LabVIEW."

  -NSV is referenced as absolute

  Some details of my configuration:

  LabVIEW 2015

  cRIO 15.0

  NOR-RIO 15.0

  Communication via ethernet, static IP

  Any help would be GREATLY appreciated. I suspect that I forget a few minor step or detail, otherwise am poorly understand exactly how and when shared network variables are deployed.

  I found shared to not be worthwhile over the years network variables.

  The RT EXE is not able to use the library to deploy to deploy the shared Variables.  See Help topic: http://zone.ni.com/reference/en-XX/help/371361M-01/lvprop/app_libdeploy_library/

  In general, SV are deployed once the project and they persist through reboots of the RT system.  In general, you should have a startup routine that checks the shared variables and expected for there to be without error on a node of the OAS and then move on to the rest of the program, defining the commissioning of values and check that they spread in the engine of the Variable is a typical method.

  See here for more information on the deployment of a variable in an application of the RT.  http://digital.NI.com/public.nsf/allkb/990508969805A7C086257619007189E7

  The section deployment of Variables shared in a real-time (RT) target running Headlessly is downstairs.  Because you are connected to an HMI PC, you should be able to use the library to deploy feature of the PC code targeting the cRIO.

  Usually, it's a faster, more scalable solution to replace your shared network Variables with a stream of network dedicated to the HMI and another for HMI - RT EXE commands.  You can send complex structures such as a cluster or even define the message as a cluster of enum and variant type to be able to use the Enum to convert the variant correctly according to the Enum value.

• Embedded FPGA vi - network shared variable not updated

  Hello

  I work with an ethernet RIO 9149 of data acquisition. I use a hybrid programming mode.

  I have a very simple FPGA VI that I downloaded on the flash memory. I used the indicator led to show my VI runs once the power of the RIO. Everything is fine, except that my shared network variables are not updated in the DSM ("no known values" displayed). However when I run the FPGA VI of my laptop, only once then stop and close (with 'interactive execution'), then my shared variables are updated in the DSM.

  Any ideas why is this and how do I get the RIO update automatically shared variables without having to run the VI once?

  Thank you very much.

  Hello

  I did a few tests and research and discovered that it doesn't seem to be possible. It is important to note the difference between Network-Published static (NSPV) and Variables of e/s of Network-Published.

  The other are "user defined variable I/O" to communicate between FPGA and RT (RT absent on chassis Ethernet as the NI 9149) host. If these variables are checked to be published-network (in properties). They are accessible by VI running on the hosts of the same LabVIEW project, so you need to run a VI to access, as you mention. This is explained on the next page, Variable IO data custom FPGA of e/s (real-time Module or Module FPGA):

  https://zone.NI.com/reference/en-XX/help/371361H-01/lvioscanhelp/io_vars/#user_IOV

  I did find a way without a host (host RT or Windows PC) running a VI. If you have a cRIO with RT and NPSV host in the RT VI it is possible.