Create local variable programmatically in TestStand

Similar Questions

• local variable FPGA

  How the local variable LabVIEW it is implemented on the FPGA, when you create local variables to transfer data?

  I'm looking at code examples and I was wondering if it would be better to use block memory to store some of these values from a loop that feeds another loop.

  http://zone.NI.com/DevZone/CDA/tut/p/ID/7727

  Statistical resources on the use of FPGAS screws

  The answer was found when looking around in the above elements.  Local variables consume real estate flip-flop and READ on the FPGA.

• Why flatten data chain not getting past all about TestStand via a local variable of the string?

  I tried to go around a series of data in TestStand as a string using "flattened chain" of LabVIEW. When I create a local variable in TestStand of type 'string' and try to write the cluster flattened at this that he simply not transmitted. If I convert the string flat binary table and then pass it around, I can recover all the data very well.

  Is there something I'm missing here?

  I've attached an example Teststand sequence that illustrates this problem. If you run this sequence that the 1st test will fail, which is the attempt to simply pass the flattened string data structure and the 2nd test will pass as it is the binary table that I generated from the flattened string.

  Thank you

  Pete

  crossrulz is correct.  The Null character affects how TestStand handles the string.  You will need to specify the string to a binary string in the list of settings both the VI.  TestStand then encodes the stringso it can prevent the loss of data.

  If you need work on the binary string in TestStand, you will need to convert it to an array of raw data with PropertyObject.GetValBinary.

  

• How to create a nested local variable control custom?

  I inherited code which has a cluster of CTL control nested inside another group of control CTL.  If I drag the control nested outside the border of the other, I can right-click to create a local variable, I need to connect to the bundle name.  However, as soon as I drag the inside the limits of external control, it breaks the local variable.

  How can I create a local variable in a cluster THAT CTL nested in a second group CTL?

  Is there some kind of reference OuterCluster.InnerCluster, that I can use if I do a local variable of the external group?

  It turns that I need a local variable for the cluster internal.

  JPG attached shows that I created a local variable for the external cluster (ParametersCluster), used a Unbundle based on the name to access cluster internal (EmptyParmeters) and can access one of the elements through an another Unbundle by name.

• Update zone drop-down list programmatically does not update its local variable

  Hi all

  I followed a Web site tutorial OR and programmatically change the items in a drop-down list box. It worked successfully, but not for local variables. Local variables while keeping the elements that had it before.

  Any suggestions?

  Thank you!

  

  You must update programmatically property value to change which returns the local variable, the value that you will wire does not match with one of the array strings.

  Maybe you need to do something like this to update your value to change the 'Two' to 'five '.

  

• How to send a variable for Labview TestStand?

  Hello

  32-bit Teststand 2014

  32-bit Labview 2015

  Not sure if a matter of Labview and Teststand.

  I created a simple labview VI that has an indicator of success/failure.

  I created a simple teststand when having a success/failure of test with the labview VI as the file.

  I have a labview GUI that runs the teststand sequence and indicates if the sequence whole success or failure as a popup message.

  I have disabled reporting teststand.

  On the labview GUI, how can I show an indicator that my test pass/fail success or failure after the step of the sequence is over?

  If this can be done during the execution of the sequence, then how to display an indicator that my test pass/fail success or failure after the entire sequence ends?

  For example,.

  If I run two digital tests in my sequence. 24VDC testing and other tests of 3.3Vdc. After the execution of my order, I invite myself just at the end if the two tests either success or failure. However, if a test fails I will not be able to know the man who. I want to be able to tell which test failed with an indicator on my labview GUI and not a teststand generate report.

  I'm not sure if it's something to teststand I need installation with local variables or elsewhere in labview. I don't have a whole test report, I want to just the user to see an indicator that a particular functionality test adopted during the teststand sequence.

  Any help would be greatly appreciated.

  Thank you

  
  

• Access can be set to a local variable

  Hello

  In a sequence, I want to access a local variable of the 'container' type, but the container element must be defined programmatically from another variable (an element in a table). Basically, it would look like this:

  For each Locals.TestList / / TestList is a table of 9 channels, current item is stored in Locals.CurrentTest.

  Locals.TempVariable = Locals.ResultList. / / Locals.ResultList is a container of

  End                                                                                                        // strings. Each string variable name is the same as the elements in TestList

  Is this possible?  What is the syntax for the "", so that TestStand include variable structure?

  Thank you

  Benoit

  Hello

  Locals.TempVariable = evaluate ("Locals.ResultList" + Locals.TestList [Locals.CurrentTest])

  Who could do if I understand your needs. The evaluation parameter must be a string, so if you pass the search string for your container, Evaluate will return the content of this place that is Locals.ResultList.

  Concerning

  Ray Farmer

• How to deploy shared to the PC remotely variables programmatically

  Hello

  I am facing a problem of programmatic deployment of SVs generated to a PC remotely (not a real-time target). Now, I have tried two approaches:

  1."add the variable to library.vi' and that the"Library Library.Deploy"method where I pointed the remote IP (I tried multiple address formats). If I have the target value IPAddress localhost or I type in local IP variables are deployed successfully.

  2. with the help of DSC: "Create shared variable.vi" and then defining SharedVariableIO Network.URL property at different addresses. However, it did not work either. In general I like this approach more because it deploys no doubt without creation of a library.

  Is there a way to do this? I looked everywhere on the internet and there aren't any examples how to do on the network.

  Another problem is I can not set the initial value of a table previously deployed with one of above approaches. But I found this option (below) on the site of NOR, so I guess I must first deploy, then connection open Variable, write variable,...?

  

  Thank you for the help

  Planko dear,

  You can also do is to create some kind of service on the server, which would be able to create the SVs locally, after receipt of applications by others, already deployed shared variable or same TCP message.

• Change local variable boolian Programaticaly

  Hi all

  I came across something today, that I have ever dealt with in Labview...

  I downloaded a driver of instrument for a power supply, and got it working OK (using VISA on the USB communication).

  The example program pilot itself works very well and is a quasi State machine.  It it turns on and off and adjusts the voltage and current correctly, as it should.

  Then I need to edit the .VI to add a time on another timer .VI.  I wrote that the small simple VI and it works properly as it should.

  It's just a boolian power timer.  Lights at 08:00 daily, stops at noon every day.

  The problem I have is the boolian called variable "Output (T:Enable)" which is located in the .VI power supply example is a Panel button, but it is called several times as a local variable.

  (once again, I did not write this part and please no lectures on why you should never use a local variable...)

  When you change the State of the button "Output (T:Enable)" Panel, the power supply turns on and off as it should.

  The problem comes when I try to control this value boolian using my timer VI.  I've tried several things, and using debug, I can't 'Output (T:Enable)"to change state.

  The value will change ONLY if the button is pressed or not.

  ATTENTION: The illustrated local variable condition is also a security in case of short or overload, power off if the name cannot be changed.

  Is there a way I can trigger "Output (T:Enable)" using 'My exit timer' but always make sure that stop you it if there is a short circuit?

  This left me speechless... I tried several different things and just can not understand.  Any help would be appreciated.

  

  Thank you!

  The guy

  Hello guy!

  You are not sure, I understand the problem in its full extent, but I'm guessing that you want to trigger the event that controls the output (T: Enable)? If you want to programmatically, create a node of the control property and use the property "value (follow the signs). Writing of a local variable will not draw the event, although this will change the value of the façade.

• How to determine the number of rows in the database and save the result to a local variable?

  Hello

  I'm a newbie in the use of TestStand, databases and SQL, and now I've met difficulties. I use TestStand 2014 (32 bit).

  I have a need to know the number of rows in a database and save that number in a local variable. I tried to practice using the database of the Types of step provided with TS. I tried to use the following in a SQL statement:

  Locals.NumberOfRows = ("SELECT COUNT (*) FROM TEST_TABLE")

  It returns an error: specified value is not the expected type. My goal is possible in this way, or I'm doing this completely wrong?

  -RautSa

  Thank you for your response, Norbert. I have a database of who wins new values at random, and sometimes I need the exact number of rows in this table.

  I managed to achieve my goal by using the SQL statement: "SELECT COUNT (*) as Rowcount OF TEST_TABLE", followed by a data GET operation, which records that number of lines in a local variable.

  -RautSa

• By the way the local variable to sous-suite

  I have a sequence that sets a local variable, Locals.LowPassFreqGhz = 1,800.

  Then it executes 5 subsequences.

  The Local is set to a new value and then the same 5 subsequences are re-run.

  Now I have new model numbers where the pair is different and will soon have models where there are groups of 4 frequencies instead of two. That is why I would like to put the 5 seqs in a following and pass the freq based on a select statement. In my limited understanding and knowledge of TestStand, I think that the sous-suite would have its own Local.variables. How should I move this local to a sous-suite, convert a File.global?

  Thank you

  JVH

  The subsequence could have its own inhabitants, but you must use the parameters to pass to residents for the most part in the subsequence. See Chapter 1 of the section and the reference of TestStand sequences on manual.

• How to set multiple values clustered with local variable?

  Hi all

  Okay, I made my way through Labview for everyone and have some basic concepts down. I can see with a cluster, if acting directly on it, you can ungroup, change values, rebundle, etc..

  I try something a little more complex... and just do not know how to start on this.

  I have a menu menu ring set. I created this with a typedef, with 4 values.  I used this typedef 7 times, more a few LED bool, in a cluster. I made this cluster a typedef.

  Therefore, in my main vi, I started designing, I put an example posted here... and inside, I have two instantiations of the typedef cluster commands selection of left and right.

  I dropped in this vi, a copy of the menu ring typedef (same typedef as in clusters, values) called reset all tubes.

  Now, I am trying to understand how, with an event to change the value to 'reset all the tubes'... that I can start with the left switch and change all tubes (here is the menu ring selector) to the same value as what has been selected with the ring of menu 'Reset all the tubes'.

  I created a local variable for the selector on the left. It is configured to read values. (I'll be doing the same thing with the right too, but just to start with the left).

  In the examples I've seen where access to a cluster, you could ungroup the cluster... browse and change the values... maybe pull out all the "hits" in a table and go through to update the values.  And when you group or ungroup the bunch... you can see the values, etc., when you stretch on the block diagram.

  With the local variable... I do not see to 'stretch' it as I expected... so I can access the values "tubes"... and all at the value of the 'reset all the tubes' ring menu value.

  Someone can put me on the path on the best way to do... or is it a component structure I'm missing here?  Am that I on the right track everything first here?

  It seems pretty basic to me, but miss me just something here on the way to start...

  Thank you in advance,

  Cayenne

  You can't do this with a for loop of how the Department is structured, but why make it so complicated?  Just group the new value in the cluster, as shown below:

  

  If you do not want to use a loop for example, consider the restructuring of your cluster.  Group ring and a Boolean value in a cluster, and then unmold 7 of those in the cluster of selector.  Then you can use 'cluster to the table' and 'picture of cluster' for all elements of the external cluster will be of the same type.

  Also, be careful when using rings in the form of type definitions.  You probably want to use an enumeration instead.  The elements of a ring do not update the when you update the type definition because they are considered to be cosmetics. the elements of a definition of enumeration type update, because the elements of an enumeration are considered as part of the data type.

• Code to skip the steps: initialization of local variables failed

  Hi all

  I'm upgrading some software LabVIEW RT I inherited LabVIEW 2011 to 2015 LabVIEW (32-bit) on a host Windows 7 Professional PC. The target is an SMU-8135. The software ran well when it is compiled under LabVIEW 2011.

  I modified the code to enable the monitoring of what is happening by looking at screen on the target outputs. The initial error that brought me here is that a local cluster variable initialized in the first window of the flat sequence described below have been appearing as the in windows later.

  The code begins with the initialization of local variables in the first window of a flat sequence and provides a quick line of text output to the display of the target (call this text #1) (using RT Debug String.vi) I send two lines of text so that a new row is created and later text does not replace it. . It then writes to the next window in the sequence flat screen two groups of text output to the target. Second text in the window 2 (#3 text) output is equipped with a wire entry from the error from the first text output in the second window (text #2). That is the second exit must wait for the first exit to complete before being sent to the screen.

  I see now some weird symptoms:

  1. when I connect to the target under a remote debugging session I see expected display outputs. Not remotely connected, text #2 is displayed. The code passes to the third window in the flat sequence, so everything in the two window should have executed.

  2. the text #1 appears on the target screen * before * I get the message "Welcome to LabVIEW Real-time 15.0." Is this normal? Whence this message? I searched my screws and subvis to this text and it is not there then it mucst come LabVIEW screws somehow.

  This all started with local variables no initialization in the first window, so apparently, I have a problem of data flow. Given that the problem disappears under the remote debugging, I'm a bit of a loss.

  Thanks in advance for any help,

  Eamonn McKernan

  EamonnMcKernan wrote:

  Text 2 appears only when remotely connected it does not appear when running at startup.

  Your "text 2" seems to be powered by a collection of nodes comments to "initialize on compile or load.  This will return once the empty string the first and therefore should not be display nothing until the code I run a second time.  That is the crux of feedback for?

• Remove the array without the local Variable element

  I am wanting to know if you can remove an element of an array, the index of the removed part.

  and update the value in the array to not include the deleted part of a more direct way than the following:

  

  Or, in my program, the table is initialized with some clues that makes the task of removing an element of

  table, the part removed from indexing and updating the table includes only not the deleted part similar to the following:

  

  (a) is there a way to do this without having to use local Variables?

  (b) I would be so concerned to rid my program of all local Variables? (even those who don't create race conditions)

  Keep the table in a feedback node initialized in the world. Do not imply not objects of façade.

• Copy a structure of event containing local variables

  Hello

  I am a state machine design in Labview and next state transition logic to wait be clicked a few buttons on the Panel.

  If I press a Boolean button from 1 to 9, next State should be X, otherwise condition (10 to 16 tags) should be there.

  I thought that the right approach, because it would be a structure of the event, where I added two cases: case 1 (button 1: mouse to the bottom button 2 down,..., 9 of the mouse down) and box 2 (10 mouse buttons down,...). For each of these cases, I'm reading & writing the local variable of some double digital.

  When I copy the structure of the event in another case of structure of outer case, I note the following: all cases in the event loop is missing, and the local variable renamed automatically and a new created indicator digital.

  • How to make an exact copy of the structure of the event, without the problems described above?
  • Could you suggest a different approach more effective than mine?

  Thanks for any response.

  Start by reading the guard and recommendations for using events in LabVIEW - LabVIEW 2011 help

  The fact that you try to copy and structure of the event to another, and that a structure of the event will be buried in a case initially tells me you are already heading on the wrong track and yourself in creating a world of problems.  Your architecture will never seem to work for you.

  The event structures are always active and capture events.  Even when the structure of the event is not in the path of execution, it's queue of events to which he attributed to him.  If you have events that are set to lock the façade until full, then you're really screwed because the event structure will capture the event, locking of the front panel and the execution path of your code with the state machine may never come to the specific case that has captured the event to support then release the façade.

  In general, you should have the structure of a single event in a VI, and should not be buried in a case structure where he can never carry.  You also shouldn't have several event facilities manage the same events.   These are not hard and fast rules, but until you are quite familiar with how the event structures work and completely understand the architecture of your code, you should not violate or you will just ask trouble.

  Similarly with the help of local variables.  The fact that you say that you have local variables and you try to copy tells me that you already have too many.  There is certainly a better way to build your VI, which does not require local variables with the exception of a few cases and certainly won't need several structures event buried in the structures of the case.

  You should probably have a producer/consumer architecture that handles the events.  Have a simple loop with a structure of the event which captures all user interactions.  Pass events to a loop of consumer who is also your computer through a queue of State.  (Also known as a computer state in queue or the BAU).  Let the state machine to determine how to manage the events, he received based on what is the current state of the VI.