To build 2 real time measures in RPD

Hi,
I want to know, how to build 2 real time measures in RPD by using Session and Repository Variables in the expression?
With Regards,
Sumedh

Hi ,
Is this an ODI question or OBIEE one ?
For OBIEE , post your query in Business Intelligence Suite Enterprise Edition
Thanks,
Sutirtha

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Attempt to build real-time application failed

When I try to build my real-time application in order to deploy it to a crio device, it fails. I can run the program just fine by opening it and clicking run. It can deploy and run all day that way, but it needs the computer that way too. So I need to be able to build and deploy it. When I do a build preview it completes just fine with no errors. I have set the program I want to start up as the startup and my subVIs virtual folder under always include. This is typical procedure for deploying projects to the crio.
When it crashes I am getting an error:
The build was unsuccessful.
Possible reasons
An error occurred while saving the following file:
C:\Program Files\National Instruments\LabVIEW 2009\vi.lib\rvi\ClientSDK\Core\ModuleGeneration\CommunicationInterfaceUtility\niFpgaDmaChannelImplementation.ctl
Invoke 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
<APPEND>
Method Name: <b>Save:Target Instrument</b>
I put in a service request (Reference#7259553) but I am just not getting help fast enough. I am on a real deadline here and I just sort of expected the application builder to work like it has always done. I have done this a million times with other applications and never had an issue like this.
Thanks in advance for your help guys.
[will work for kudos]
Solved!
Go to Solution.

With the fantastic help of applications engineer Will Schoettler, we were able to solve the problem.
1. First we tried creating a new project file from scratch, adding all the files and compiling the fpga. Same error.
2. Next we made individual builds deploying each subvi individually to see if one of them was causing the error. Each built without a problem.
3. I tried to create a new build for the main crio program and tweek the settings. Instead of manually adding the subvi and variable library folder to the 'always include' section of the build option, I simply added the main VI to the startup programs list and was going to let LabVIEW figure out which VIs to add. For some reason this gave me a more verbose error explanation and gave the following reason as the last sentance in the error explanation
"Due to operating system limitations, LabVIEW cannot create the folder because its complete path contains too many characters."
I moved the project folder to c:/ , fixed the broken references in the project, and it built the VI and deployed it just fine.
The builder creates a directory with a really long path name within your project folder, so if you have your project folder deep in your directory tree it will attempt to create files with paths too big for windows to handle.
Mad Kudos to Will Schoettler the app engineer for such a potent and thorough troubleshooting task list of things to try that lead me straight to the solution. I am glad it was something so simple and not some form of file corruption or something wrong with my code.
Thanks for trying to help guys.
[will work for kudos]

Build real-time application with Compact RIO

Good afternoon,
I am currently trying to run a VI on compact RIO and would like to control it through remote front panel. I followed steps on this link http://digital.ni.com/public.nsf/allkb/AB6C6841486E84EA862576C8005A0C26 and successfully done everything with a simple example.
However when I moved on and did the same thing to a more complicated VI (my purpose is to make this VI work), everything was fine until I reboot the compact RIO. After a few seconds connection lost between the host computer and cRIO, and I had to shut it down and delete the startup file (with extension .rtexe).
I am not sure what happened since everthing works fine with simple VI but not the complicated one. It could because the second VI has many sub VIs as well as objective functions loaded in it, it could also because the VI takes too much memories of the CRIO and stop it from connecting to the host computer.
If anyone have any ideas of how to make it work please let me know.
Thanks very much
Carl

Hello zzzfreedom,
There are a number of potential issues I can see with the VI you're trying to deploy as a startup executable. How do you intend to interact with this VI? Are you running the front panel as a remote panel or connecting to the VI using debug tools? A few points:
- Your VI will run immediately when the RIO boots unless you're using debugging tools to prevent this from happening, keep that in mind. It looks like you've accounted for this and required an initialize or network trigger of some sort for some of your loops, but the AI loop will start quickly and appears that it may require user input.
- You have several "user prompt" style express VIs. These will not work (or will not work as expected) on a standalone RT target. There is usually no front panel to interact with!
- Like dialogs, event structures watching for user interaction probably aren't going to do what you want.
- You are writing quite a bit of data to the VI's front panel, and there is at least one chart indicator. Again, how will the user interact with this VI? It looks like you need a host VI that will run on a machine the user will interact with.
- You're using quite a few local variables. It looks like you've taken a lot of care to protect against race conditions, but this causes a lot of data copies and tends to be error prone.
- I've not analyzed all cases, but it looks like you have a number of places where the execution of a timed loop may be blocked under certain conditions. This will likely rail the CPU due to the much higher priority of the timed loops.
- What will happen if you lose connection with the server in your TCP command loop? it doesn't look like there is any way for the user to reconnect without restarting the RIO.
If you do intend to run this as a remotely accessible VI on your RT target, another point to note is that when running from the development environment, the front panel of your VI executes on the host machine. Once you deploy it as a remote front panel or debuggable RTEXE, everything is hosted on the RIO, and this has the potential to bog things down quickly.
Here are a few references I think you might find helpful:
LabVIEW Help: Real-Time Operating Systems - see considerations for Express VIs and Front Panel interaction
http://zone.ni.com/reference/en-XX/help/370622L-01/lvrtconcepts/rt_osnotes/
LabVIEW Help: Real-Time Module on VxWorks Targets - see unsupported features
http://zone.ni.com/reference/en-XX/help/370622L-01/lvrtconcepts/rt_vxworks/
NI LabVIEW for CompactRIO Developer's Guide -lots of good general information on architecting RT applications, network communication and hosts, etc. It looks like you're using the RIO Scan Engine, so the FPGA portion might not be relevant at this time.
http://www.ni.com/compactriodevguide/
Best Regards,
Tom L.

Buliding real-time relationships between fields

Hello,
we're looking for a solution about building real-time realtionships in MDM 5.5. So, based on the selection in field A I would like to narrow the values in field B, which depend on field A - all this should happen "real-time".
Maybe an example will help best for this issue:
I have a table countries, which lists all the counties in Europe and another one containing the country/states relationship. So, the "simple" problem is, that, based on the selection in the "country" field, I would like to display just the states belonging to that particular country - and not all the countries/states of Europe.
I think, that MDM has to send a request to the database to update the "states" field. But this is, in my opinion, not possible during the process of data administration.
Has anybody an idea what could be a good solution for this?
Thanks for the replies,
Andreas

Andreas,
If you are trying to filter by using the Seatch pane in Data Manager, then whatever Jorge has explained works perfectly fine.
But, if you are talking about the two fields and automatic population in the drop downs based on the first field selection, then this can not be done as of now using MDM Data Manager.
If you are not refering to the above two scenarios but something else, then please let us know.
Regards,
Rajani Kumar

Is real time module necessary?

Hi,
I want to use cRIO-9073 for simple system control. Do I need Labview Real-time module if I don't need real-time support?
Thanks in advance.
Karpis

Hi Karpis,
This is the forums for IF-RIO, which is the PCI-5640R and PXIe-5641R devices. Please post your question to the cRIO forums found here:
http://forums.ni.com/t5/Real-Time-Measurement-and/bd-p/280
You can get faster response to your question there.
Best Regards,
Jignesh P
Applications Engineer

Hi am trying to save Data into a write to measurement file vi using a NI PXI 1042Q with a real time mode but it is not working but when i run it with uploading it into the PXI it save in to the file

Hi am trying to save Data into a write to measurement file vi using a NI PXI 1042Q and DAQ NI PXI-6229 with a real time mode but it is not working but when i run it without uploading it into the PXI it save in to the file please find attached my vi
Attachments:
PWMs.vi ‏130 KB

other problem is that the channel DAQmx only works at real time mode not on stand alone vi using Labview 8.2 and Real time 8.2

How to get last Build date of a dll in the real time target

Info On My Project
I am working on LabWindows CVI 12.0 for development . This project is a real time application for hardware, which is having Phar Lap ETS as RTOS...
I am facing some problems while checking Build date of my Application file( .dll)
I have tried to use GetFileDate API. But it is not supporting for realtime Target..
So i have tried __DATE__ macro.. That also having some problems..
How to get last Build date of a dll from the real time target ??
Please Help to solve this....
Thanks
Vaishakh A K

Please reply if any one have suggestion...

Error building source distribution of a project containing real-time utility VIs

I'm using Labview 8.0.
When building the source distribution of a project I get the following message:
An error occurred while building the following file:
C:\Program Files\National Instruments\LabVIEW 8.0\vi.lib\real-time\rtutility.llb\FPC pad/strip string to size.vi
I'm using "RT reboot controller.vi" and "RT ping controllers.vi" in the project.
Anyone can tell me how to solve the problem?
Is it correct that the filename of a VI contains the character "/"? (FPC pad/strip string to size.vi)

Hi!
You fall in a LabView library error..sorry.
As you have imagined the problem is the slash in the filename and to solve you have to remove it. Go to ..\National Instruments\LabVIEW 8.0\vi.lib\real-time\rtutility.llb and rename the file.
Let me know if this solve.
Ciao
Clara
AE Manager
NI Italy

Build a message driven (HL7) real time data warehousing

How far is practical to build a message driven (HL7) real time datawarehouse on a EAI,which can be used for BI , considering the issues of data cleansing, integrity that are relevent in Healthcare instead of a traditional datawarehouse ?

Hi A.Lal,
Since you have mentioned ECC5.0,Assuming that the client is generating the following reports in ECC,already:
The Production report (ZPRD)
Wastage Report (YWR)
A Charge Register Report
then brainstorm the PP functional consultant and try to pick the R3 Fields from the reports.Then its all about mapping them to the BW Info objects.
If these reports are not maintained at ECC ,then you need to have sessions with the users/PP Consultant to decide whether u can go ahead with BC or get some customizing done..
Goodluck

How to measure and plot RMS value of real time data?

hi
i need to measure and plot real time RMS value of EMG voltage. I made a VI. But I dont know why it didn't work. Can anyone please help me out? My VI is attached in 2013 and 2011 both version. One sample data is also attached. Thanks at advance.
Solved!
Go to Solution.
Attachments:
RMS.vi ‏47 KB
RMS_2011.vi ‏41 KB
Sample Data.docx ‏20 KB

You seem to select EMG voltage vs Angle(Z-axis). Is that really what you want? More resasonable would seem e.g. EMG voltage vs. time.
If you want to process the 3D (xyz data), you probably need to add some more math). Why are you taking the absolute value? RMS does not care about the sign anyway, right?
They you are trying an XY graph with a single point, because your Y value is only a single number. You need an equal number of points for Y.
Here's a quick modification that graph EMG(mV) vs. time(ms) and takes the RMS of the EMG data. See if this gives you some ideas.
Please provide more information what you want to do with the angles.
LabVIEW Champion . Do more with less code and in less time .
Attachments:
RMS_MOD.vi ‏18 KB

Configuring Vision Builder demo software with real time EVS 1464

whe i tried to configure the Vision Builder to real time EVS 1464 it didnt se the MAC address of the EVS
Solved!
Go to Solution.

Hi Frank Noe,
Have you connected the device and set it up as specified in the manuals? A good place to look to ensure you have taken the proper setup steps is the 1464 RT's getting started guide. Pay particular attention to the steps listed on pages 8-12. If you have everything connected and setup properly, and are still encountering this issue, take a look in the 1464's user manual in appendix D. On pages D-4 and D-5, the manual lists troubleshooting steps for the device not being listed as a target in VBAI. Hope this helps.
Matt J.

Measurement & Automatization Reconoce mi cFP pero no lo reconoce mi Project. Si tengo Real-Time Module

El problema que tengo es que Measurement & Automatization Reconoce mi cFP-2200 pero no lo reconoce mi Project osea que al tratar de agregar un nuevo Target and Device no lo encuentra en la red y me da el error de Bank is not responding. Tengo labVIEW 2009 y la version que posee el cFP 6.0.5. tengo el modulo de Real-Time.
Gracias

Hola Estel3an!
Lo primero que podemos hacer es verificar que no sea el firewall o el antivirus la razón por la quetu cFP no esté siendo detectado. MAX y LabVIEW son diferentes procesos en el sistema operativo y por tanto puede ser que lo veas en uno pero no en otro.
La forma más sencilla de verificar esto es desactivando el firewall y el antivirus y ver si puedes detectar el cFP correctamente en MAX. Si es así, entonces para no quedar sin protección necesitas permitir el acceso a red de LabVIEW desde tu firewall y desde tu antivirus.
La forma de descativar el firewall es directamente en el panel de control y el antivirus por lo general trae un administrador donde lo puedes deshabilitar.
Por favor haz esta prueba y me avisas tu resultado.
Que tengas un excelente día!!

Display real time data on a plot in a sub VI and main VI

I am building a program to measure and plot real time data. Program has several steps so I build few Sub VIs to make it simple. My problem is I am plotting real time data in my SUB VI(it works fine), but in my main program when I try to get the same plot its not real time data plot. Plots appear at the end of the program. All tips and help would be greatly appreciated. Thanks
I have attached my main VI and Sub VI
Solved!
Go to Solution.
Attachments:
main VI.jpg ‏116 KB
Sub VI.jpg ‏242 KB

LabVIEW program is based on DATA FLOW, now, until the subVI will finish execution (while loop will be stopped), the execution in Main VI will not proceed any further.
If you can pass the reference of 'XY Graph' inside the subVI, you'll be able to update the plot (placed on MAIN VI) from within subVI.
Find attached example for your reference.
I am not allergic to Kudos, in fact I love Kudos.
Make your LabVIEW experience more CONVENIENT.
Attachments:
Example [LV 90].zip ‏26 KB

How to save data in a 4D array and make partial plots in real time?

Hi, this is a little complex, so bear with me...
I have a test system that tests a number of parts at the same time. The
experiment I do consists of measuring a number of properties of the
parts at various temperatures and voltages. I want to save all the
measured data in a 4-dimensional array. The indices represent,
respectively, temperature, voltage, part, property.
The way the experiment is done, I first do a loop in temperature, then
in voltage, then switch the part. At this point, I measure all the
properties for that condition and part and want to add them as a 1D
array to the 4D array.
At the same time, I want to make a multiple plot (on an XY graph) of
one selected property and part (using two pull-down selectors near the
XY graph) vs. voltage. (The reason I need to use an XY graph and not a
waveform graph, which would be easier, is that I do not have
equidistant steps in voltage, although all the voltage values I step
through are the same for all cases). The multiple plots are the data
sets at different temperatures. I would like to draw connection lines
between the points as a guide to the eye.
I also want the plot to be updated in the innermost for loop in real
time as the data are measured. I have a VI working using nested loops
as described above and passing the 4D array through shift registers,
starting with an array of the right dimensions initialized by zeroes. I
know in advance how many times all the loops have to be executed, and I
use the ReplaceArraySubset function to add the measured properties each
time. I then use IndexArray with the part and property index terminals
wired to extract the 2D array containing the data I want to plot. After
some transformation to combine these data with an array of the voltage
values in the form required to pass to the XYGraph control, I get my
plot.
The problem is: During program execution, when only partial data is
available, all the zero elements in the array do not allow the graph to
autoscale properly, and the lines between the points make little sense
when they jump to zero.
Here is how I think the problem could be solved:
1. Start with an empty array and have the array grow gradually as the
elements are measured. I tried to implement this using Insert Into
Array. Unfortunately, this VI is not as flexible as the Replace Array
Subset, and does not allow me to add a 1D array to a 4D array. One
other option would be to use the Build Array, but I could not figure
out if this is usable in this case.
2. The second option would be to extract only the already measured data
points from the 4D array and pass them to the graph
3. Keep track of the min. and max. values (only when they are different
from zero) and manually reset the graph Y axis scale each time.
Option 3 is doable, but more work for me.....
Option 2: I first tried to use Array Subset, but this always returns an
array of the same dimensionality of the input array. It seems to be
very difficult, but maybe not impossible, to make this work by using
Index Array first followed by Array Subset. Option 3 seems easier.
Ideally, I would like option 1, but I cannot figure out how to achieve
this.
Your help is appreciated, thanks in advance!
germ Remove "nospam" to reply

In article <[email protected]>,
chutla wrote:
> Greetings!
>
> You can use any of the 3D display vi's to show your "main" 3d
> data, and then use color to represent your fourth dimension. This can
> be accessed via the property node. You will have to set thresholds
> for each color you use, which is quite simple using the comparison
> functions. As far as the data is concerned, the fourth dimension will
> be just another vector (column) in your data file.
chutla, thanks for your post, but I don't want a 3D display of the
data....
> Also, check out
> the BUFFER examples for how to separate out "running" data in real
> time.
Not clear to me what you mean, but will c
heck the BUFFER examples.
> As far as autoscaling is concerned, you might have to disable
> it, or alternatively, you could force a couple of "dummy" points into
> your data which represent the absolute min/max you should encounter.
> Autoscaling should generally be regarded as a default mode, just to
> get things rolling, it should not be relied on too heavily for serious
> data acquisition. It's better to use well-conditioned data, or some
> other means, such as a logarithmic scale, to allow access to all your
> possible data points.
I love autoscaling, that's the way it should be.
germ Remove "nospam" to reply

How to create a c++ shared library (.so) for linux real time (for myRio) with Eclipse to use in LabView?

I tried already these Tutorials and Advices but I didn't find a solution:
- http://www.ni.com/tutorial/14625/en/
- http://www.ni.com/tutorial/14690/en/
- http://forums.ni.com/t5/LabVIEW/Shared-Library-on-myrio-Linux-Real-time-system/m-p/2842540/
- http://forums.ni.com/t5/LabVIEW/How-to-create-shared-library-for-linux-real-time-target-in/m-p/28218...
- and some more
I want use c++ codes on linux real time. For testing reasons I want to have a function that adds 2 values and gives the result.
I've done these steps:
1. writing a c++ file in Eclipse (see screensot 2)
2. building a shared library (.so) from my c++ project in Eclipse (with Cross GCC)
3. putting this file on myRio (path: /usr/local/lib/)
4. creating a VI that calls this library from Labview with a "Call Library Function Node" (see screenshot3)
5. Setting the properties for the "Call Library Function Node" (see screenshots 4-7)
After I run this VI i get this error message: LabVIEW: (Hex 0x627) The function name for the ... node cannot be found in the library. To correct this error, right-click the Call Library Function Node and select Configure from the shortcut menu. Then choose the correct function name. (see screenshot1)
I've tried a lot things to solve this problem but I couldn't find a solution. Would be very happy if anyone can help me. I guess that I have to edit my c++ code to export my function (symbol). But I have no idea how to make it. I also tried it with a dll file in the same folder but it didn't help.
Perhaps someone can send an example which works on myRIO.
Thanks!
screenshot1
screenshot2
screenshot3
screenshot4
screenshot5
screenshot6
screenshot7

can see it in the screenshot8 there is a function called "_Z8AddierenddPd" instead of "Addieren". I copied this name to Labview (see screenshot9) and it worked.
I'm sure that there is a way to compile the shared folder with gcc without decorations (mangling). But I don't know how. If someone has a recommendation I would be very glad!
Prepend each function declaration that you want to be available without name decoration with
extern "C" <your function declaration>
Or if you have multiple functions you want to export you can in the header file where you declare your functions simply use:
#ifdef __cplusplus
extern "C" {
#endif
<all your function declarations>
#ifdef __cplusplus
#endif
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

To build 2 real time measures in RPD

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