Executed asynchronously VI

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• Use the same code module to multiple steps in the sequence

  Hi all

  I tried to implement a sequence that uses the same code for all steps module in the order, but I'm not returning to it when I need to send it commands.  I got regarding the appellant the VI in a new thread so that it can be executed asynchronously.  I can run the simple sequence and it will indeed open the VI and move to the next step.  When I close the VI manually from the front, the TestStand sequence is completed, as planned.  So it turns out that I have a lot more work.

  My question is how to call the thread separate from the main sequence and other sequences overtime when I need to change the settings.  If I insert a step in the Action, I have to select a file of VI, but from what I can tell, it opens another instance of the file and does not provide an interface with the other asycronously running instance.  My next guess was to use a stage of education, but I was not able to understand how to configure the search string to call the VI settings.  In addition, I don't know how to proceed.  Please notify.

  My intention is to start the module code (asynchronously) VI, run several different subsequences in the main sequence, which call this same VI and edit its settings, close everything and report the results.  If I'm understand how TestStand is supposed to work, please let me know.

  Thank you

  GSinMN

  What I do is use a queue to send data to the asynchronous VI.  So he can run and whatever, but also receive orders from the queue.  I use a motor of Action that contains the reference to queue and sends the commands.  If you really just call the engine of the Action of your sequences.

• How do I programmatically load and show the façade of a vi but NOT run it?

  Is it possible to load and display the front panel of a vi but NOT run?  I start with the AsynchronousCallAndForget.vi from the example finder and inserted a node invoke with the Open FP method call before the starting node the asynchronous call. The vi that I'm loading has the "Run when opened" unchecked and the menu bar IS visible so I can manually click the run arrow. Thank you!

  

  Why do you use the asynchronous call? If you simply open the VI reference, then call the FP. Open method, it works very well. You can then call the VI run method which wait until is set to false if you want to execute asynchronously, it is how we did in ye olde days before we have this fangled tricks "Start Asynchronous Call.

• CGRA Clones run in series - sometimes

  Well, I am observing something that makes no sense, and maybe someone has seen this before. I hope I just missed something trivial.

  • I have a preallouee clone reserve screws
  • I use the call and collect, method
  • I use 0 x 100 and 0x40 for the flag "options".
  • I have my clone live defined as shared clones.
  • I'm reusing the only VI ref so no queue a request to the loop of the root. (Except the first).

  We run IO traces to solve a problem without a report, and we save messages to trace IO at the start of each clone, and when each clone ends the execution. (Kind of a sanitized version of the DETT)

  In an hours-long term, I see the clones run in series in the IO route. You will run out and the next will be run in and out, as if they run just a loop for. There are no reentrant dependencies inside each clone of VI, but in the past, I've seen the clone screw executed asynchronously as expected.

  Why these VI clones would be run in series sometimes? Has anyone another considering that happen?

  I have used this method many times and never seen this behavior.

  On LabVIEW 2012, (we will upgrade later, but this isn't an option now)

  Thank you

  Jim

  

  Well, it's weird.

  We ran the code on the stand this morning and everything is asynchronous. The only thing I changed was this:

  Before:

  Before, each clone I asking the clone name, simply to score when the clone has done things in the log of the IO.

  

  After:

  Turns out that when you use the Ref unique with the node of the CGRA, the CloneName property does not work.

  The CloneName property returns an empty string. He fired something valid under normal circumstances. Why it did not work for the previous series, I don't know.

  So, instead, I used the following to label every clone in the i/o trace log:

  

  Once I switched to the method 'after', everything seemed to run asynchronously. Clones start together, negotiate not reentrant resources and end at various times as expected.

  It seems probably crazy, but that's what I'm observing. Is it possible I inadvertently did something subtle that has restored the asynchronous behavior? Of course, but I don't know what it could be.

  The symptoms he look like me not I must have Goofed and specified indicator of bad options, but I triple checked this flag and it has not changed for the last round which was completed successfully.

  It's probably one of those things... I'll never really know why he did what he did.

• How to start a command-line in synchronous mode LoadPlan

  I want to start a LoadPlan for command line by an external programmer. This external Scheduler is the return code of the execution of the LoadPlan. However, the LoadPlan is executed asynchronously. For running a scenario there is an option to specify (a) synchronous execution, but this option does not exist for the execution of a LoadPlan. How can I solve this?

  I finally found it. It is a bug in the documentation. The startloadplan.sh script is able to start a loadplan synchronousloy, by using the parameter-SYNC =(no|yes).

• How to link several workflows vCO to a state change worklfow vcac?

  I would like to be able to bind more than 1 process of vCO on measure for the change of State of ExternalWFStubs.BuildingMachine but vCAC allow me to do what (name of change workflow state is already in use, therefore preventing me to add another value to this custom property to the level of the action plan).

  Is this possible? I have 2 separate changes of workflows customized that perform different actions to be run during the State of the building; 1 create a new DNS entry while the other creates a new computer object in AD. For the record, I also have another vCO custom workflow that runs during the change of State of ExternalWFStubs.MachineProvisioned, so is not an option.

  Do I need to combine all Actions in a custom workflow vCO and then associate this workflow with the change of State of construction Machine (Stub) WF...?

  Thank you. Ron

  Update

  I answered my own question part. Combining all the workflows in 1 custom vCO will do. I would still know, however, if there is an easier way to achieve this goal by combining (maybe) vCO several Workflows to the same ExternalWF Stub... ??

  Thank you. Ron

  For what it's worth, I have just a "workflow" 'root' for each stub (buildingmachine, alienate, machineprovisioned, etc.) which will open then any number of subsequent workflow. I find this easier method follow the workflow is executed. You also have the advantage of executing asynchronously things if they are released in the same root workflow.

  Finally, you can control the order in which workflows run and can be creative in when they run. Consider the example:

  

  The code in the ' do this? "decision could be:

  return (updatedProperties.keys.indexOf("RunWorkflow1") > -1);
  

  and "Run the workflow code 2?" is:

  return (updatedProperties.keys.indexOf("RunWorkflow2") > -1);
  

  Now, if I add the custom property "RunWorkflow1" to a plan of action / draw up profiles / property custom, it will run ' Run Workflow 1 ", then jump on the other and complete. Similarly, if you want to run the workflow 2, simply add another custom property RunWorkflow2 in the action plan.

  If you are designing in this way, it allows you manage 1 workflow root while still customizing plans to do different actions.

  Hope this helps,

  James

• Ticker display the time spent on a page

  I want to show the user the time elapsed since their entry to the page in a ticker that updates every second. So I would say...

  
  

  00:00

  00:01

  00:02

  00:03

  ...

  
  

  I look at some different methods to do it, but I'm not an expert in Javascript and I am very new to animate dashboard. While I try to figure it out, I wanted to see if I could get feedback on the good way (s) to do so.

  
  

  I've been playing with creating a symbol that has a 1 second loop the timeline, and having an action triggered in this timeline. But that requires you to get time at the beginning and then access and manipulate, and who gets easily spoil/do evil.
  

  
  

  Or you can create a loop that increments every second, probably using setInterval() , and just ++ a counter variable. But I don't know if that would be executed asynchronously of everything.

  So if anyone has treaded similar waters, I would be very happy comments!

  Thank you very much!
  

  Here's an improved version.

  I wanted to see a 0 in the 10s place if the meter has been less than 10. Then I wanted to 00:00:00, not 0:0:0.

  And before I had done all of the globally accessible variables, which is not necessary. The only one that must be accessible in the world (in my case) is timerCombined, which you can access at:

  sym.getComposition () .getStage () .getVariable ('timerCombined');

  sym.getComposition () .getStage () .setVariable ('timerCombined', 'value');

  ----------------------------------------------

  Create variables

  //"... Variables in the format' should say '00:00:00 ' instead of ' 0:0:0 ".

  var secondCounter = 0;

  var secondCounterFormatted = '00';

  var minuteCounter = 0;

  var minuteCounterFormatted = '00';

  var hour meter = 0;

  var hourCounterFormatted = '00';

  Combining everything into one

  sym.setVariable ('timerCombined', ' 00:00:00 ');

  {setInterval (function ()}

  Number of seconds

  secondCounter ++;

  If (secondCounter< 10)="">

  secondCounterFormatted = "0" + secondCounter;

  } else {}

  secondCounterFormatted = secondCounter

  }

  Convert seconds to minutes

  if(secondCounter == 60) {}

  secondCounter = 0;

  minuteCounter ++;

  If (minuteCounter< 10)="">

  minuteCounterFormatted = "0" + minuteCounter;

  } else {}

  minuteCounterFormatted = minuteCounter

  }

  }

  Convert minutes to hours

  if(minuteCounter == 60) {}

  minuteCounter = 0;

  hours counter ++;

  If (hour meter< 10)="">

  hourCounterFormatted = '0' + hour meter;

  } else {}

  hourCounterFormatted = hour meter;

  }

  }

  sym.getComposition () .getStage () .setVariable ('timerCombined', (hourCounterFormatted + ':' + minuteCounterFormatted + ':' + secondCounterFormatted));

  (}, 1000);

  ^ Here set the time in milliseconds

• HGFS: checkout subversion on a shared folder fails in a nondeterministic way

  I am running Windows XP SP3 guest under VMware Fusion 2.0.1 (128865) on a Mac Pro (Leopard 10.5.6).

  When I try to 'svn co' on reviews XP in a directory in a shared folder in read/write HGFS, the payment process will invariably fail with a permissions error:

  Z:\WindowsData\work > svn co http://yyy/zzz

  A Dir1

  A dir1\file1

  A dir1\file2

  A dir2

  A dir2\file3

  ...

  svn: can't set file 'dir3\.svn\entries' read-only: access is denied.

  If I delete the entire working copy and rerun the recovery of subversion, the error occurs curiously at a different point in the order process.  Otherwise, the shared folder works fine: I can copy/delete files and can manually change file attributes.  I have never seen this problem with svn located on the virtual hard disk, which suggests that the problem is probably not a bug SVN working copies.  The shared folder is located in a directory encrypted host-side.  FWIW, the problem occurs with the version of the Tortoise SVN 1.5.6and SVN 1.5.4 command line. Here are a few lines of the .vmx:

  numvcpus = '2 '.

  memsize = "1504.

  insulation. Tools.hgfs.Disable = "FALSE".

  hgfs.mapRootShare = 'TRUE '.

  hgfs.linkRootShare = 'TRUE '.

  sharedFolder0.present = 'TRUE '.

  sharedFolder0.enabled = 'TRUE '.

  sharedFolder0.readAccess = 'TRUE '.

  sharedFolder0.writeAccess = 'TRUE '.

  sharedFolder0.hostPath = ' / users/pnp/Documents/WindowsData.

  sharedFolder0.guestName = "WindowsData".

  sharedFolder0.expiration = "never".

  sharedFolder.maxNum = '1 '.

  Anyone know how to fix this?  I really want to keep most of my files in a shared folder, rather than the virtual disk.  I know I could use Samba share to access the windows directory, but I don't want to expose my entire directory to a potential destruction of the guest (the default mode that Apple Configurator seems implemented the SMB share) and I don't want samba to link to on the machine's real ethernet interfaces.

  Kind regards

  -Paul

  Hi Paul,.

  Well, no need to do the verification of CIFS, if you don't the have not already made.

  The information you have provided with the IO file you downloaded follow-up allowed me to see what was going on.

  It is indeed a question that I have known about for some time, but we had not yet addressed.

  It boils down to how the client Windows file system driver manages the end of the last reference to the file by the system.

  This occurs after the closing of the application handle. In this sequence of events, you see that TortoiseProc.exe holds

  two handles opened simultaneously in the case of a Z:\WindowsData\work\python2\Python\.svn\entries that it uses to set the file read-only and then attribute when it comes to update, delete this indicator.

  Once disabled, the other handle open to Z:\WindowsData\work\python2\Python\tmp\entries which is the new updated version is renamed Z:\WindowsData\work\python2\Python\.svn\entries, replacing and replacing the old.

  The two handles are closed and the final references are deleted so applying all data in our file system. The closure of the last reference is executed asynchronously, when it must be done synchronously.

  This creates a race condition that fires here. The following query is open to Z:\WindowsData\work\python2\Python\.svn\entries News (to restore the attributes of the file read-only again). However, it slips ahead of the last close reference is made asynchronously and therefore the logon request may not until the previous close over, so he can't. This causes TortoiseProc.exe to issue the error cannot set read-only.

  The correct fix is to manage the narrow reference synchronously, guaranteeing this way then opens the file will not be failed due to the proximity not made.

  We have the bug should be fixed for the next big release due out later this year. If possible, we may be able to get a fix in an intermediate version, but that seems unlikely with programs very tight right now.

  I can't promise anything but we will try.

  I will update our bug for this issue with the details of this thread and you have provided registration information.

  Thank you very much for that bring to our attention and to help track down the issue.

  Steve

• Running in parallel to the interfaces

  Hello. In the package of the ODI, I can locate my interfaces and join each two of them in two lines: 'ok' (successful) and "ko" (unsuccessful). So I get a sequential execution of these interfaces. How can I make ODI run in parallel?

  To do this, create a scenario for each of the interfaces (right button of the mouse on the interface, generate scenario) and drag the scenario on the package, and not the interface. This will give you a script to execute tool, which you set to execute asynchronously. run each of the interfaces and then use an OdiWaitForChildSession tool to wait for the complketion of the child sessions. If only some of the tasks that you run asynchronously are on the critical path, you can use tags when you start the executions and the tool of waiting. For those who are on the critical path, give a keyword CP. The tool to wait, wait with the key word CP.

• Why an asynchronous call would lead to "the VI is not executable. The full development version... »

  I built a labview moderately complex program to connect with a new parser that I build.  To briefly describe the application, the main VI is a user interface which, in an initialization step, asynchronously calls a dozen other screws each called VI is a state machine that handles communication with a component specific for my parser, whether heat controllers, regulators debit, NI DAQmx channels, a SQL database, etc..  I use the VFG and/or EI to communicate information between the main VI and each component. The system works well when it passes through NI Labview 2012 SP1 (full development Version).  I build the project successfully, but when I run the construction (on the same development machine), I encounter the "the VI is not executable.  The full development of LabVIEW version is needed to correct errors"message.

  My first troubleshooting step that was supposed to isolate the problem.  I removed all the asynchronous calls, rebuilt and the program works without errors (granted, no State machines that handle I/O bundles are running). This gave me the impression that my UI screws are not the problem.

  The next step that I took was to create a test project with a simplified user interface to call asynchronously, and control a single component.  The first part, I tried to control a heating unit, and it works perfectly.  I have build it and run without errors or problems.

  Thinking that the component should not be a problem, I add the async call for this component in my main VI, to test it.  This works well in the built environment of Labview development, without errors, but alas, I get the same message as the "VI is not executable' when I try to run the build.

  I am at a loss on how to make trouble, or it could be the cause of the problem.  Why an asynchronous call to the VI even break the construction of an executable project, but don't cause problems in an executable of side projects?

  
  

• LabVIEW executable not feasible using the asynchronous call

  Hello

  my project works very well from the source, but fails to run as an executable file. I was able to follow him to the asynchronous call of a VI.

  

  So far, I was able to solve the problem by using a queue dummy and loops in order to start the VI parallel to the rest of the code.

  I tried:

  1 mass recompile

  2. build the source distribution, remove existing build, create new

  3 allways include reminder all screws and all the screws called by reference via Server

  Always without success. I tried to hide the forum to find answers, but only found suggestion I already tried fail. Help, please

  So problem solved...

  Now it works.

  

  But I can't understand why and what was the problem.

• Failed to load the VI using the stand-alone executable interface user

  Hi all

  I am preparing for my deployment. I'm building an executable for my UI (based on the example of the Simple user interface), I get the following error when you try to run my test sequence using this as standalone executable.

  I do not get this message when I run the user interface vi (Note: the LabVIEW adapter is configured to use LVRTE).

  There are several code modules in test sequences, but this error occurs only for 3 of these code modules. These 3 code modules run from another sequence of "sub", located in the same file in sequence as in the main sequence. These sequences of void (the first is call Stop Valve monitor as shown in the error message) operate asynchronously and each of them calls the LabVIEW code module (first called StopValve.vi as shown in the error message). The rest of the code modules that are supported correctly are call of normal main sequence code modules.

  Can someone please help me figure out why these 3 code modules are not able to load in? Any way to solve this problem?

  I use 32 2014 LabVIEW and Teststand 2014 32 bits.

  Yours sincerely,

  chati

  

  If it's on the same machine, and the only difference is the development of vs runtime. Then it is likely that those with bad or outdated compiled code.

  For every VI in question:

  Check if the screws are marked. Open them, check the properties of the VI / general tab make sure the ' separate compiled code in the source file "is not checked.

  In addition, perform a massive compilation on the VI. CTRL - Shift and click on the run button. Controls RECOMPILE the VI, Maj RECOMPILE all the sub screw

  Save all the

  I hope this helps.

• How do I know if a VI is already running before calling Start Asynchronous Call?

  The new node to start the asynchronous call is great for the spawning of several instances of the reentrant vis.  However, I fell a little bit using for screws not reentrant the old practice of using the method "Run a VI" would allow us to check the Execution.State of the VI before calling the method to execute.  This way if the State was running or running at a higher level, we could spend the invoke node and just use a property node to open the front panel.  With the starting node the asynchronous call, it seems that we must use a strictly typed static VI reference, and when we open the reference VI, VI gets booked and his Execution.State = running.  So, how whether it is not only reserved by wire, but actually running before calling Start redundant?

  Moreover, the redundant beginning has an interesting behavior.  Actually, it will cause the targeted VI must be performed again after it stops.  Even if you tap the Abort button on the target VI, it run immediately still and always the same number of times as the starting node the asynchronous call is executed.  There is nothing wrong with that, and I guess the simple answer is to simply go back to the old method of "run a VI.  It's just that ability over these inputs directly to the connector pane is so nice.  Maybe missing me something obvious.  Oh, I am referring to the call and forget mode (0x80).

  Thank you

  Dan

  Maybe missing me something obvious.  Oh, I am referring to the call and forget mode (0x80).

  Yes you have forgotten that he forgets the Run method always seems to be a better choice for this mode

• check the asynchronous process is running

  Hello

  A quick question: I have this program consisting of several state machines. The user interface can start these state machines (asynchronous) and send commands to them. Now, the problem is that I have to be able to check if a certain state machine runs or not. What is the best way to achieve this?

  Kind regards

  Wouter

  I would have the FGV or the variable include a timestamp as well.

  There is a property for VI node titled executiontate.  That will show you the status of a VI.  But I don't think I want to count on it.  He would tell you a VI is running, but maybe you are really stuck in a sort of endless loop which prevents effectively do what you expect it to do.  For your application, you would consider it's stuck, but according to LabVIEW, it is executed.

  I would appeal to this method of guard dog where you update a variable that would be a cluster of a timestamp and another useful piece of information such as your current state of machines.  Now you will know what is happening, and you will know if they are too old.

• deployment of the asynchronous call

  I need deploy an executable on a computer of the client and for the first time, I need to use an asynchronous call in my program I don't know how I'm going to keep the path to the 'reference of VI Open' valid after I build and deploy the application.  The obvious way would be to use a configuration file to allow me to set the path independently of the LabVIEW Application.  However, when you include A VI in the always 'include' is not an EXE so not include a file in the folder of generation, which in fact had reference on the host computer.

  Teaching tips on how to proceed would be to very help full to learn to deploy this application

  Attached is a code snippet of how I am currently using an asynchronous call

  Thank you

  Mark R.

  That's how I always call a VI by reference.  Saw the ref static VI causes LabVIEW load this VI in memory and be able to find it by name when opened.