Variable is shared deployed on target RT retains its value after restart?

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• How to make text retains its value...

  Hello world

  I currently have difficulties with the text entry fields. I have a flash file that begins with a form for the user to enter text. Once they have their input text they click a button to continue and user is now displayed a results page include text that they come to enter. What I managed to do it.

  However, when you click on the "back button" to return to the form, possibly to correct a mistake they could, it seems that the text that they had registered previously has now disappeared, and text entry fields are returned in their original condition.

  Did someone knows how can I let my users come back to the form to make changes to text and have the form to remember what text was the registration of the user and do not wipe the text fields empty?

  Your help with this would be greatly appreciated

  When your form is first presented to the user, initialize the variables.  When subsequently presented, call restoreF().  When advancing beyond your form, call storeF().  for example, when the form is submitted the following may run every time

  var tfObj:Object;

  {if(tfObj==null)}

  tfObj = new Object();

  var tfA:Array = [enter your textfields];

  } else {}

  restoreF();

  }

  -the code between the dotted lines should run once-

  Call storeF() when you want to store text properties

  function storeF() {}

  for (var i: uint = 0; i<>

  tfObj [tfA [i] .name] is tfA [i] .text;.

  }

  }

  Call restoreF() when you want to restore the text properties

  function restoreF() {}

  for (var i: uint = 0; i<>

  {if(tfObj[tfA[i]]!=undefined)}

  tfA [i] .text = tfObj [tfA [i] .name];

  }

  }

  }

  // ----------------------------------------------------------------------------------------- ----------------------------------------

• Touchpad does not retain the settings after restart on satellite series

  the touchpad on my equiem is too sensitive, I can adjust and works very well for this session, but when I reboot it refers by default, I have saved the settings etc. but will not always be together

  Hello

  He s strange and not usual.
  Have you tried reinstalling the driver for the touchpad?
  Try to download and install the latest version of the driver for the touchpad Synaptics Web site of the and repost it please the results.

• Scroller opacity does not retain its values on a PNG...

  When I try and add a scroll of opacity of a PNG logo effect I am able to enter values (sometimes) for the keyframe, opacity, etc. However, when I click and then reselect the PNG the box has been disabled and all values are empty.

  Is this a bug or I'm doing something wrong?

  Please check with another simple image a new page, apply the opacity, deselect, then select new. This would help isolate the problem.

  Thank you

  Sanjit

• UploadedFile does not retain its value

  Hello
  
  I use the following to download an Excel file:
  * < af:inputFile label = "Download file" columns = "30" value = "#{backing_dataUpload.file}" / > *.
  
  Here's how I "put" save the file for later use in the sesion:
  
  * public void processExcelHeader() {*}
  File UploadedFile = getFile();
  AdfFacesContext.getCurrentInstance () .getViewScope () .put ("uploadedFileKey", line); / /
  *}*
  
  Here's how to retrieve:
  * public void beginUpload() {//===TBD===*
  
  UploadFile UploadedFile = (UploadedFile) AdfFacesContext.getCurrentInstance () .getViewScope () .get ("uploadedFileKey");
  
  
  If (uploadFile! = null)
  *{*
  * Try {*}
  ProcessExcelWorksheet pexcel = new ProcessExcelWorksheet();
  java.io.InputStream in = uploadFile.getInputStream ();
  *}*
  
  It's the value java.io.InputStream in returns NULL. Please note that tof the bean is "Session".
  
  I looked in the debugger the "uploadFile" in the beginUpload() is all the entries except the 'buffer' is set to NULL, and the length is zero.
  
  Please note that after the exit, there is a treatment and control even if it means a return to the screen, and pressing another command button, it returns to the
  function beginUoload().
  
  Any ideas...
  
  Thank you...

  Hi Anil:
  Could you please mark my answer as 'Correct' to make me a partition?

  Thank you
  Alex

• Shared variable refuses to deploy correctly!

  My problem looks like one that has been met before, but without good answers on the documents OR or the forums. When you try to run a VI that deploys shared variables, I get an error that the shared variable engine was not found. This seems to be almost at random, because I was able to deploy perfectly shared variables. He could have when I rebooted my computer this problem started to occur.

  I tried to disable the firewall, which had no effect. LabVIEW 2009 reports the following when I try to start my VI:

  "LabVIEW: (Hex 0x8BBB0005) Impossible to locate the variable in the shared Variable engine."  Deployment of this variable may have failed.

  This error or warning occurred when writing the following shared Variable:
  \\.\fake_data\flow_sh
  \\.\fake_data\flow_sh".

  I will include all relevant files so that you can see exactly what I'm doing. The purpose of the fake_data program is just to practice using shared variables, very simple. Thanks for any idea that you can offer!

  my shared variables work once again, I just open cmd.exe and typed:

  net stop "national instruments variable motor.

  followed by

  net start "national instruments variable motor.

• new variable networked shared in my computer, but not in the shared variable engine list

  I have a Variables.lvlib shared on a cRIO target and test algorithms when I don't have access to material cRIO. Thought I could do a new project, add the library to the windows target (workstation). I need to add a few additional variables, I did in the original (i.e., while the library was the target in real time). Then create a new project and added the lvlib to the project (under my computer), and then wrote a VI to write in these SVs. When I let fall a constant Variable Refnum shared on the block diagram and browse for objects variables under 'Variable' Motors > ni.var.psp > localhost > shared Variables, list of variables shows everything except the 6 new variables. When I switch the view 'Current project', I get the same variables for new list WITH THE 6. However if I select the variables in the list and run the VI I get an error-1950679035 impossible to locate the variable in the shared Variable engine. Of course, I forgot something, anyone out there set me straight?

  Thanks for your time - lmd2

  Hello Lawrence,.

  Looks like you'll have to maybe just to deploy the new variables - refer to this document:

  LabVIEW Help: Making static Variables available on a network

  http://zone.NI.com/reference/en-XX/help/371361K-01/lvconcepts/sv_deploying/

  Hope that helps!

• Uninitialized shift registers compiled in a DLL retain their values?

  Hello

  I'm using Labview 8.6 to create a DLL and then I create another Labview program that will call this DLL.  Within the DLL is a function called Untitled2 which is your basic uninitialized shift register.  It has a digital input which can be put in the shift register, and then I can read the number back.  After that I build it to the DLL and call it from another Labview program looks like registry of offset values are lost.  So, my question is whether Labview DLLs that contain uninitialized shift registers to the as registers of the SHIFT to retain their values?  I enclose a copy of Untitled2.vi so you can see my simple test vi.

  Does anyone know also - all good articles on the creation of DLLs in Labview?

  Thank you!

  Steve

  The short answer is the fastest is to call a VI a VI with a direct appeal. Any other way to do so is somehow above enveloping mechanism which means added. If you want to hear some details, you can read on.

  When a caller VI loads, it is "patched" with its subVIs. This means that he holds on a pointer in which he can use to call effectively than VI. The appellant also assigns a list of parameters for each call. When the call runs, the only thing the caller must do is to fill this list of parameters with the locations of their data and pass the pointer to this table in the code of the Subvi.

  When you call a VI that is embedded in a DLL, the call library node must all first set all parameters in the form provided by the convention call DLL. This is different from the approach of list for the parameter of LabVIEW and usually is to set each parameter on the processor stack. The function exported in the LabVIEW built DLL, must first obtain a connection to the VI to run. She accomplishes this by obtaining a reference VI of a cache of VI references created in the loaded DLL. Each VI reference has a list of parameters that should be filled in the settings for this call. It can then call the code. When the code is complete, there may be additional work to put the outputs in the form provided by the appellant. The VI reference must then be returned to the cache.

  So there will be several manipulation of the parameters in the call to a DLL and a couple of access to a cache may cause overhead and additional jitter include parallel calls. Even a call via a strict VI one reference would be faster. With whom you are in direct control of the VI reference so cache intervenes and the call puts the parameters directly from a list of parameters, the Subvi expected so there is less handling it.

  There are also several other limitations introduced by calling a VI in a DLL.

  1. If you are reporting to the DLL that contains the handles, then you must make sure that the DLL is called from never screw in the same version of LabVIEW. If you do not do this, then you will be allocated in a nursery memory to another instance handles and LabVIEW will stop.
  2. If you do not pass data containing the handles, then LabVIEW must make copies strings or arrays that are passed to the DLL, hindering more performance.
  3. Préallouée reentrancy is not available through dll. It's the kind of reentrancy, which allows the slot - VI maintain state specific to each caller. When it is called by a DLL, we have no idea where we are called to so we cannot give you a specific instance. Each VI reference in cache will be a specific instance of the VI but not sure which one you will get. Essentially, this makes it reentrant in dll screws act as shared reentrant. (Which could explain why it does not seem like your uninitialized register shift worked.)

  I hope this doesn't scare you use LabVIEW to create the dll. When you need to communicate to other software, this is the way to go and all of these steps are necessary to cross this limit. But if you're already in LabVIEW is not an ideal replacement to directly call a Subvi.

• Whence ODI stores its values variable if type is text

  Hi all
  
  I've already lost my time of 2 to 3 just try to find "where ODI stores its value for variables if type is text. "SNP_VAR" is certainly not the answer.
  
  I tried one of the following ways:
  
  (1) can't find that no matter what tat column that can contain more than 400 characters in my working repository.
  (2) seek to implement Oracle disk track to discover sql get questions when we hit the Refresh button on the ODI variable. Does anyone know how to trace sqls pilot?
  
  Kind regards
  Amit

  Hi Amit,

  When it's a text variable it is stored in SNP_EXP_TXT in the documents as necessary once the text is 'broken' in blocks of 256 characters long. This means that if the variable has a 700-character text, you will find 3 files to SNP_EXP_TXT.

  This help you?

• How to use the 'Get Shared Variable list' VI on a target RT?

  Hello

  I would like to browse all variables shared in a library hosted on my CompactRIO programmatically. I dropped the 'Get Shared Variable list' VI in my VI in real time, but when I tried deploying, LabVIEW says

  Deployment PRC_GetVarList.viPRC_GetVarList.vi loaded with errors on the target and was closed.
  LabVIEW: Unable to load the shared library dscProc.dll:ni_lvdsc_process_GetTagListEnd:C. ensure that the library is present on the target of RT. MAX allows you to install software from OR or FTP to transfer custom RT target libraries.
  LabVIEW: Unable to load the shared library dscProc.dll:ni_lvdsc_process_GetTagListBegin:C. ensure that the library is present on the target of RT. MAX allows you to install software from OR or FTP to transfer custom RT target libraries.

  I watched the wizard of the MAX software, but cannot find the DSC-based modules. Where should I look?

  Thank you!

  Hello

  The palette of DSC is not supported on the screws in real-time and will lead to errors when they are deployed.  Unfortunately, to have a successful build you will need to modify your application and remove the screws from the palette of DSC on your target of RT.

• Shared variables, analysis engine and multiple targets

  I'm looking for some general tips on my LabVIEW project structure.

  The project consists of a laptop with LabVIEW, a connected joystick and a CompactRIO connected via ethernet. I ran the cRIO mode Interface FPGA, but a change in some things causes the project to have be moved to scan mode.

  From now on, the code on the portable computer updates the shared variables on the cRIO and bed from the variables shared on the cRIO for surveillance. I want to shared variables on the cRIO because he will also need to work without the connected laptop. Before moving the cRIO for scan mode, I found that I had to first run the code of the laptop and then run the code cRIO, or shared variables would not release properly. Now that I spent to scan mode, I have to run the code cRIO first, and even then the shared vars do not properly communicate for more than a few seconds and are well laggier.

  My ideal project solution is a system that can operate with or without the connected laptop and obviously do not have these questions shared variable. I would like the autostart code on the cRIO and ask the user to execute the code of the computer laptop, if necessary, but in the past, it doesn't seem to work with shared variables.

  I'm really confused about why this is happening. I hope I explained my problem well enough. I really don't want to display the entire project here, but I can email to people if they are willing to take a look. Thank you for taking the time to read this.

  I'm under LabVIEW 2010 SP1 with FPGA, DSC modules and robotic in real time. I have the updated Feb 11 driver and NOR-RIO 3.6.0 installed and completed all updated on my RT cRIO.

  I do this kind of thing all the time...

  Move all your NSV libraries on the cRIO.  Of the project, you must deploy on the cRIO and then they are persistent until you reformat.

  Your windows GUI application, you can set static NSV tags on the block schema or use the API SV dynamic R / w.  Also you can bind GUI controls and

  indicators directly to the NSV cRIO (it's what I do) also I create a library of 'mirror' in the PC HMI that is linked to the library of cRIO.  This library has DSC Citadel

  data record enable and automatically records the historical traces of all my important data - very nice.  Libraries hosted PC can be set to autodeploy in the version of the app.

  the project also has an option of autodeploy to the development environment that normally, I turned off.  If you have a PC at the cRIO binding configuration so be careful

  on any kind of autodeployment because this will eventually force the cRIO app stop when you deploy.  To work around this problem, you can use the PSP (IP address rather than project binding

  process name) and use of the DSC deploy library s vi in your HMI application.  Once you use the scan engine, you can use the app DSM (Distributed System Manager) to view, DIF and

  each of you IOV and NSV graphic on your network.

• global variables shared between several targets of RT

  Hello

  I'm looking for some information about variables shared between RT communication network.

  Scenario: a PXI 'master' and several 'slave' PXIs running that screw RT. data is available in the form of a cluster of definied type on each slave PXIs (inside a non deterministic while loop). I guess I create global variables of network shared for each PXI slaves. A variable for each slave. I only write data in these variables in one place (above mentioned, while loops), on the PXIs slave. I need to read that data in a way with loss (I just need that value the most recent, as tags) from the master PXI.

  Question: can I simply use "network shared variable" settings by default? I mean, I do not enable the option RT FIFO (single element), because I think that for a cluster that is a no go in the case of RT (variable length)?

  What do you think? Or would you have better idea how to share data between slaves and masters RT targets (I do not have deterministic/losless transmissions, only these last values)?

  I think that the way to proceed is to use the shared Variable Aliasing/binding - they allow you to 'link' shared variables in any of the multiple targets. https://forums.ni.com/t5/LabVIEW/Bind-Alias-shared-variable-to-scan-engine-variable/td-p/3290043.

  You can also use shared variables of programming access to access running on another target: http://zone.ni.com/reference/en-XX/help/371361G-01/lvconcepts/usingdynvarapi/

  With regard to the other methods - you could always disseminate data via UDP multicast (or with a TCP/IP connection manager).

• problem connecting to TCP variables and shared help

  Hello

  I have a project (host and a device in real time) using variable static as well as TCP to send images over the network. I am familiar with the use of TCP in labview but never used TCP and shared variables in the same project before.

  I receive the error 63 off the open TCP connection. This only happens if an executable file is trained and deployed on the device in real time.

  Is there something to watch if the use shared variables and TCP?

  Thank you

  JChec

  Thank you Nate

  Fiddled a bit and found that the TCP worked great if I deployed from another computer. Thanks for the links, they were good reads

  JChec

• variable cluster shared doesn't work not as expected

  Hi all

  I use shared variables for communication between a computer host and target time real crio.  This works well as simple variables.  I configured a set of shared variables in an attempt to clean up the code a bit.

  I have some problems.  If I write to a single element, for help, the other elements of the cluster that I don't want to not write to are replaced with unknown default values.   Second, when the host program is stopped, the cluster on the host computer RT wrote what appears to be default values for all variables of the cluster on the RT.  The idea is to keep the RTW program running in its current state until the host computer retrieves.  Of course, this is impossible, if it resets all default data.

  It seems that I can only write to a cluster on one side and read on the other side.  I can't read/write in the same cluster at different points on the host machine and target.  With a shared variable, I can read/write to my hearts content on any process.  I could not find a way to solve this problem.

  I'll post the code, but you will need a cRIO to run it.  If someone uses the cluster shared variables, I'd be curious to see how you do.

  Thank you
  John

  That makes sense, I can think about is that you write on the same cluster in two different places. Each location will update the two values so if the host writes B1 = False and B2 = True then the Rio writes B1 = False and B2 = False, then the variable will be set to the most recent of the two being false. It's a loop condition.

  Even if you only set a value in the bundle name the another value from the cluster to a package of entry by name.

  To manage this, you'll need to remove the cluster to enter the bundle name and replace it with the shared variable read. This is where you need a time to make sure that the variable has the most recent value updated.

  Also, you still have the stress points. For the shared variable try linking to the custom control instead of an indefinite cluster (choice according to below in the setup of the SV)

• Problems with the published variable network shared

  Greetings,

  I have difficulties in obtaining data on the network.  I can see that the editor SV will correctly the data, but the customer (lu) variable is an empty string.  I don't get any errors and I also checked the IP addresses in the alias files are each corresponding machine on their deployment.  One last point, it is that the two pieces of code is in form vi, none are yet exes. I have to say the PC Editor I want to share the data to the specific IP subscribers?  Please tell me what I'm missing.  I used variables shared between machines before but not through a server.

  Concerning

  Look at the computer registry option in the menus of LV.