Real-time validation while creating a node

Similar Questions

• Foreign key validation while creating a table entity object

  Dear all
  
  I'm new to the java world with oracle forms experience. I want to create a "employeeEO" that have a "deptId" attribute." It refers dept_id "in the departments table data. Now I want to make sure that the user cannot do no matter what dept_id which may not exist in the table departments. How can I apply the logic against this reqquirement. I don't want to post at the user interface level, but at the level of business logic.
  
  
  Thank you

  Yes, you will get an error.

  Try it, it takes about 5 minutes to set up a test case.

• In real time several parcels using the graphics buffer XY?

  Hi all. My teacher wanted to add a second set of data to the plot in real time, I've created in my vi. I was able to trace the two sets of data, but not as two plots. I managed to add a second point of y to the plot. What is the appropriate method for the use of a buffer of xy-graphic inside a loop to draw two separate parcels?

  The idea is that once I have two plots I can adjust a second axis and adapts the second group of data to this axis.

  Thank you!

  Nukem,

  LabVIEW 2010

  PS. Here is a picture of the small section of my program which is graphically representative data.

  

• How to create the shared library for linux real-time target in labVIEW Windows?

  I use myRIO running linux in real time. In my project, I need to pack some C code, so I tried the node library function call.

  I know that I should use the tools compile cross - compile linux on Eclipse to compile c code in linux .so library. But the problem is that call library function node does not recognize the .so file because my labVIEW runs on a Windows PC.

  What should I do to fix and how to combine C code with labVIEW during programming for devices shipped as myRIO?

  Basically, you must also create a Windows DLL that exports the same functions. These functions can be empty stubs if you do not want to run the code correctly on Windows, otherwise you will need to consider how to implement the equivalent functionality on the Windows API.

  Then you can write in your node library call as the name of the library ". "*" and the name of the shared library Windows ".dll" while the Linux version is called "name of your library > .so". LabVIEW will replace the * after the comma in the name of library with everything that is the preferred extension shared library for the platform it is running on and therefore load the right shared library.

  Alternatively you can wrap call all the nodes of the library in a structure that contains the node library in the case of Linux RT and all what you want to run on other platforms in the case of default or a case of specific platform, call the conditional compilation.

• Trying to update channels in real time while controlling the Agilent 34970

  Hi all

  I got Aussie help on these forums and I hope that someone will be able to point me in the right direction with this problem. I'm still fairly new to LabVIEW please bear with me.

  I work with the LabVIEW driver for the Agilent 34970 connected on a GPIB-ENET 100/1000. The device was detected and works very well. The reason why I am writing today, what I'm trying to update the list channels in real-time. Currently I need to stop the whole process in order to modify the list of channels, but due to the nature of the tests we will occur, it is important that I can add more channels I want without interrupting the ongoing trials.

  I searched the forums and tried to change control of chain of channel for "Update of the value while typing" and "limit to the only line." The motivation behind the change of the latter was so that I could change the channel list and use the ENTER key to run. I also tried to create a while loop with shift registers but construction ws so clumsy that it does no more.

  I am sure that the change must take place as soon as the control of the chain, but is not certain since the pint is so he can reset which channels to scan and which appears lower in the VI. I have attached the VI I work with; It is a slightly modified version only Advanced Scan example of the driver.

  Thank you in advance,

  Yusif

  You might have added a registry to shift, but you're not actually compare anything. You compare the value of the control to the value of the data coming from the shift register to see if it has changed. If so, change the scan list.

  If you need to have a delay after you change the scan list, then you must add the delay within the business structure that calls the VI to reconfigure the scan list. You can use the late VI period causes the delay occur after you set up the analysis using the wires of the error to force the order of execution.

  P.S. Your naming scheme for screw means that you probably use a source code control system. If so, you would be well served by taking the time to discover the source control systems and installing a. It is very easy, and he has had several discussions in the LabVIEW forum on recommendations of source code control systems.

• Error trying to create the exe for real-time target

  I have a target program that works well on target in real time, but hangs when I try to create an executable fron, error is:

  An error occurred during the recording of the following file:

  C:\Program NIUninstaller Instruments\LabVIEW 2009\vi.lib\Motion\FunctionBlocks\straightLineMove\nimc.fb.straightLineMove.startStraightLineMove.axis.modeVelocity.0.vi

  Invoke the node in AB_Source_VI.lvclass:Close_Reference.vi-> AB_Build.lvclass:Copy_Files.vi-> AB_Application.lvclass:Copy_Files.vi-> AB_RTEXE.lvclass:Copy_Files.vi-> AB_Build.lvclass:Build.vi-> AB_Application.lvclass:Build.vi-> AB_RTEXE.lvclass:Build.vi-> AB_Build.lvclass:Build_from_Wizard.vi-> AB_UI_Frmwk_Build.lvclass:Build.vi-> AB_UI_FRAMEWORK.vi-> AB_CreateNewWizard_Invoke_CORE.vi-> RTBUIP_CreateNewWizard_Invoke.vi-> RTBUIP_CreateNewWizard_Invoke.vi.ProxyCaller
  
  Method name: Save target: Instrument

  Visit ni.com/ask support request page to learn more about the resolution of this problem. Use the following as a reference:

  Error 6a held at AB_Source_VI.lvclass:Close_Reference.vi-> AB_Build.lvclass:Copy_Files.vi-> AB_Application.lvclass:Copy_Files.vi-> AB_RTEXE.lvclass:Copy_Files.vi-> AB_Build.lvclass:Build.vi-> AB_Application.lvclass:Build.vi-> AB_RTEXE.lvclass:Build.vi-> AB_Build.lvclass:Build_from_Wizard.vi-> AB_UI_Frmwk_Build.lvclass:Build.vi-> AB_UI_FRAMEWORK.vi-> AB_CreateNewWizard_Invoke_CORE.vi-> RTBUIP_CreateNewWizard_Invoke.vi-> RTBUIP_CreateNewWizard_Invoke.vi.ProxyCaller

  Possible reasons:

  LabVIEW: File generic i/o error.
  =========================
  NOR-488: IO abandoned operation.

  The second was the issue, I found myself actually apply to open with an engineer and he helped me. Thank you very much!

• Leak memory in real time caused by VISA Read and timed loop of data nodes? Is not supposed.

  In collaboration with LV 8.2.1 in real time to develop applications that monitor or emulate computers on bus RS-422.   The following screenshots have been taken an application that monitors a transmission of 200 Hz.  After a few hours, the PXI station would break a range impressive messages angry... most involving something about memory loss.  After much hair pulling and passing money, my partner has discovered while looking at the available memory on the controller of loss of memory occurred at each loop containing a VISA read and propagation of error using the data nodes (see Leak.jpg of memory).  He concluded that if he went to the propagation of the error to the regular old shift registers, then the available memory was rock-solid.  (has the Leak.jpg of No memory)

  Any ideas of what could be the cause?  Do you see not any problem with the way that we code these kinds of loops?  We always strive to optimize the way in which we use the memory on our urgent requests and VISA readings and DAQmx bed give us the heartache more than ever, we are able to allocate memory for these screws some tips?

  Dan Marlow

  GDLS

  Hi thisisnotadream,

  This problem has been reported, and you seem to be exactly reproduce the conditions required to see this problem. This was reported to R & D (# 134314) for further investigations. There are several possible solutions, of which one is the one you have already found the wiring error directly in the loop. Other situations which give rise to no memory leak are:

  1 if the bytes of the property node port is not there and has read lies in each iteration and time-outs resulting are ignored.

  2. If the structure of the deal is gone and just blindly check the bytes to the port and read each iteration.

  3. If the timed loop is transformed into a while loop.

  Thanks for the comments!

  Kind regards

  Stephen S.

• My daughter has an air of ipad and iphone 6 mounted on a tripod. She would like to use his phone to photograph/video while you watch on his ipad (in real time)... is it possible? If so, what adapter or cable is needed?

  My daughter has an air of ipad and iphone 6 mounted on a tripod. She would like to use his phone to photograph/video while you watch on his ipad (in real time)... is it possible? If so, what adapters or cables are needed?

  Hello!

  Unfortunately, this feature is only available with the GoPro cameras.

  And Yes, if all cables already existing for these purposes, it would be kind of a pain to take pictures and do not shake the camera accidentally. Maybe, VSCO camera makers will make such feature in some time in the future. This idea is excellent and innovative. Maybe even Apple will listen to users and make their new iOS 10.

• When I use the library function node call in real time, is loaded only once for all or load the DLL whenever it is called?

  When I use the library function node call in real time, is loaded only once for all or load the DLL every time when it is called?

  I have a critical application in real time, in which I use a piece of DLL function developed in C++.  It is ok?  Make sure any senior developer?

  Thank you in advance.

  The user interface thread is the thread that is used to update the user interface. It's slow. And it's supposed to be that way because humans are slow.

  The call library function node can be configured as this thread to use in the configuration for it dialog box. Please visit the LabVIEW documentation on how to do this.

• Create a shared library for NI Linux real-time

  I need to build a shared library for NI Linux time real (.so) which corresponds to a shared library, which I create on Windows (.dll).

  I have the C code that needs to call a function of VI. On Windows, I have a project that allows me to create and build a "Shared Library (DLL)", but I don't see the same option available in a real-time project targeting the cRIO-9068. Am I missing something, or is it not still possible?

  Hi Wayne,

  Using LabVIEW VIs in other programming only possible through dll environments. In LabVIEW there are options for creating libraries and source, but these distributions will be accessible in LabVIEW and not in other programming environments.

  Concerning

• problem while conspiring waveform of the signal in real-time

  Dear Sir

  I use LabVIEW8.2 and USB1208FS for data acquisition. I have configured hardware with LabVIEW and data in real time using the Universal Library VI AInScBg.vi. When I draw my signal on the waveform (amplitude vs. frequency) then on axis x frequency ranges from 0 ~ 0.49 hz. I have change the sampling rate of 1000 Hz to 4000 Hz, but on the x-axis without frequency change occurs and it is set at 0.49 hz. Can you please guide me how can I get the frequency of my own interest on the x-axis.

  I enclose you daughter of LabVIEW for reference.

  Kind regards

  Muhammad Irfan

  Student

  UTP Malaysia

  0060149087570

  Simply change the text label of the x-axis of frequency does not automatically the correct calculation. You do not pass in the sample information in the service spectrum, so you get no frequency information. You can see the strain on the entry point. The function expects a data type of waveform as input. Without it, the dt will default to 1. Then, use the function create a waveform and add information from dt to it as well as your table of Y.

• & quot; An error occurred while installing LabVIEW Real-time 2009 (in English). ...

  While trying to install the real time of the third quarter of 2009 DVD module, I get this error message.

  "An error occurred while installing LabVIEW Real-time 2009 (in English). Do you want to continue installing remaining products? »

  After removing the program OR series (USB) 1.1 installation completed up to the end.  If you answer no to continue to install the above question, the following error message refers to abduction OR Serial.

• Is there a tutorial for creating executables in real-time?

  I have the code in real-time which works OK in LabView (not the final version no doubt but I need to learn two or three other things as well).

  Now, I would like to create an executable file that I would run on some PCs with some inside monitors and control.

  I found little exercise on the development of Application (shortly): 1) create shared variables) 2 create a copy of the Vi that works and to replace the controls and monitors in it with static variable) 3 Windows creating welcome 4 VI) probably create an executable after that (step not described in the exercise).

  I'm currently stuck at step 3 with the 1950679035 error.

  Looks like a well known error, but I found no solution yet.

  My question is: which is the right way, I'm moving to? Or there is another way to create applications with control and monitoring of the device in time real NIcRIO 9072?

  Sergey.

  Hi Sergey,

  Glad to hear that you are making progress.

  And all you need to do now is create the façade in the same way that you would create a normal .exe file.

  Here is a link with tips on how to create front panels: (web-based)

  http://digital.NI.com/public.nsf/allkb/7F95D43D3F50FCAC8625710E000068E1?OpenDocument

  http://digital.NI.com/public.nsf/allkb/7FEE6BCFD264175C8625723E000D928E

  There are other links on the bottom of these pages.

  Kind regards

• Creating a Clone of VI in the real-time platform

  Hello

  I wanted to create a clone of VI in time real LV on cRIO-9022 controller. I changed the properties to run VI and selected pre allocated incoming running clone.

  But I'm unable to generate the clone like this.

  I read from here, "you can configure LabVIEW to allocate or share a VI clones reentrant clone shared within a structure ofloop delayed or Timed Sequence" .

  My question is how can we create a clone of screws in the RT platform? clones are limited to Timed loops only?

  I use LV 2013, cRIO-9022, chassis NI 9114

  Thank you

  Thibault

  Hello

  I got it, it was similar to what you do on a normal LabVIEW VI. I expect a change in the name of VI in CloneXXXX.vi, but in real time, I think that you do not have this indication.

  As he had no name and when I try to open the instances of these real-time clone live all were directed to the real VI itself, so I thought that it did not work.

  but I think that it how it is in real time.

  I did a test using the simple addition of numbers using clones and it works very well.

  If you do not get the clone of instance names when you open the front door and we cannot highlight the real-time performance clone VI

  I think it's obvious.

  Thank you

  Thibault

• Create logs in real-time after poweroff vms

  I create script poweroff mV. I would record in real time in an excel or html file which were poweroff vms to follow. Is possible?

  I think you'd better examine the events to get the start and stop times, i.e. the events of ignition and extinction.

  The following will give you a list of these events in the last 10 days

  $events = get-VIEvent-start (Get-Date).adddays(-10) |

  where {$_-is [VMware.Vim.VmPoweredOnEvent] - or $_-is [VMware.Vim.VmPoweredOnEvent]} |

  Group-object - property {$_.} Vm.Name} | %{

  $_. Group | Select @{N = "VMname"; E={$_. Vm.Name}},

  @{N = "Createduserid"; E={$_. Createduserid}},

  @{N = 'Action'; {E = {if ($_-is [VMware.Vim.VmPoweredOnEvent]) {'Poweron'} else {'Poweroff'}}},

  @{N = 'User'; E={$_. User name}}

  }

  $events | Export-Csv "C:\VM-power.csv" - NoTypeInformation - UseCulture