LabView talking with Simulink model

I have a problem sending a real number to a Simulink model. Simulink
only understand the format with full stop as indicater (2.5) but
labview only want to send with comma (2,5).
I´m Using a danish windows XP, but I can´t see that this is the
problem, because I have tryed to change the settings to match the
english number system.
Please point me i the direction to fix this problem.
Thanks
M.Olsen

Hello M
In LabVIEW you are able to set the decimal point in Tools >> Options >> Front Panel. You are able to set it up to use the localized decimal point. When the localized decimal point is not used then its a dot that's used as decimal point. If you change that setting remember to reboot LabVIEW.
Regards
Mohadjer
NI-DK
Message Edited by mohadjer on 09-27-2005 08:30 AM

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How to use Labview 6i and Simulink model ????

HELLO I would like to use a simulink model written in matlab from labview
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NI says that there is a possibility but they don�t know it.
but - it can been done.
motti

Hi Motti,
There are at least two ways to solve this depending on the problem. One ways is to use ActiveX technology to run a simulation model and get the results in the files saved from simulink. This is good if you have an off-line problem you do the calculations in simulink than the analysis in LabVIEW. If you have to communicate with the model interactively than you should use Real-Time WorkShop to create an executable and connect to it by TCP/IP. I have VIs for both solutions. I'm planning to release a LabVIEW toolkit for Matlab Simulink. If your problem is argent we can work out some deal.
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Naturen Kft.

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now I want to execute my .vi with a PXI and I get this problem I have saved the dll. in veristand target PXI not in the Controller I have created a project and I have saved the Veristand files in C:\ of the PXI and I have the problem below I need special sofware I have installed all the avaliable veristand software in the PXI
Attachments:
Capturaaa.PNG ‏25 KB

Does creating a labview dll from simulink model require visual studio

I've asked the same question at the Simulink forums, but maybe someone here has the answer:
I'm trying to perform this process here:
http://zone.ni.com/devzone/cda/tut/p/id/3447
However, I get the following errors from the Simulink Real Time Workshop:
Error building Real-Time Workshop target for block diagram 'SensorCAN_sfcn'. MATLAB error message:
Error using ==> setup_for_visual>LocIssueMSDevError at 324
Invalid setting for environment variable MSDevDir or DevEnvDir.
The setting is: ''
You can verify the setting by checking for the existence of:
%DevEnvDir%\..\tools\vsvars32.bat          (for Visual C/C++ 7.1)
%MSDevDir%\..\..\vc98\bin\vcvars32.bat     (for Visual C/C++ 6.0)
%DevEnvDir%\..\tools\vsvars32.bat          (for Visual C/C++ 8.0)
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Solved!
Go to Solution.

Thanks, I've got SIT 5.0 installled, but it turns out we have a site license for VS 2008, so I now have that as well. I've got a new problem though, and although I think it's related to Simulink, these forums seems a little more responsive than that Matlab forums. So....
I’m working with someone else's s-code, and I haven't used Simulink in the past. As I said in my original post, I am attempting to use SIT to turn the s-code into a dll for use in a LabView RT application. I opened the mdl file in Simulink, and I’m now trying to build the LabView dll in the Simulink Real Time Workshop. The target file is nidll.tlc and Matlab starts the SIT when launched, so it appears the tools are aware of each other. However, when I attempt to build the dll, I get the following error:
fatal error C1083: Cannot open include file: 'rtlibsrc.h': No such file or directory
I’m using the following: Matlab 2008b, SIT 5.0, and MS Visual Studio 2008, so the libraries and includes should be fairly up to date. What I don't get is that the files that are calling for this include are auto-generated by Simulink, so I don't know why it's not finding the rtlibsrc.h. Still, I found that in the RTW subdirectory, and copied it into my local directory. This gives me a different error:
### Linking ...
C:\PROGRA~1\MATLAB\R2008b\sys\perl\win32\bin\perl C:\PROGRA~1\MATLAB\R2008b\rtw\c\tools\mkvc_lnk.pl SensorCAN_sfcn.lnk SensorCAN_sfcn.obj rtGetInf.obj rtGetNaN.obj rt_logging.obj rt_matrx.obj rt_nonfinite.obj rt_printf.obj rt_sfcn_helper.obj nidll_main.obj rt_sim.obj SensorCAN_sfcn.res SensorCAN0_sf.obj
link /RELEASE /INCREMENTAL:NO /NOLOGO -entry:_DllMainCRTStartup@12 -dll /NODEFAULTLIB:MSVCRT LIBCMT.LIB kernel32.lib ws2_32.lib mswsock.lib advapi32.lib @SensorCAN_sfcn.lnk /dll -outensorCAN_sfcn.dll
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SensorCAN0_sf.obj : error LNK2019: unresolved external symbol _rt_Lookup referenced in function _mdlOutputs
Again, self-generated code, now with unresolved external symbols? I'm assuming that I'm linking the wrong version of a dll or obj that contains mdlOutputs, which appears to be something from Matlab. Can anyone point me in the correct direction? Missing headers and incorrect libraries lead me to believe that I've got a search path issue somewhere, but the Matlab/Simulink/LabView/Visual Studio are all fresh default installs.

I am trying to integrate simulink model (.mdl) file with SIT of Labview for RCP and HIL purpose. I am using Labview 8.6, Simulink 6.6 with RTW 6.6 and RTW embedded coder 4.6 ,Visual C Express 2008 and Visual C++ Express 2008.

I am trying to integrate simulink model (.mdl) file with SIT of Labview for RCP and HIL purpose. I am using Labview 8.6, Simulink 6.6 with RTW 6.6 and RTW embedded coder 4.6 ,Visual C Express 2008 and Visual C++ Express 2008. I have selected system target file as nidll.tlc,make command as make_rtw and template nidll_vs.tmf. When I try to generate .dll file I get the following error.
Attachments:
SITProblem.JPG ‏101 KB

Hi,
No . I could not solve the issue. Presently we are using microautobox (from Dspace)for doing the RCP.
Himadri

Simulink model to labview

Hi,
I need to implement a simple speed control for a DC motor with two cascaded PI controllers.
Is it posible to include a simulink model in a VI instead of using the simulink control blocks?
Thank you!

Hi,
You can indeed build a LabVIEW interface for a simulink model by using the Simulation Interface Toolkit.
The following link will provide you informations about this toolkit and how it works in parlicular:
=> http://zone.ni.com/devzone/conceptd.nsf/webmain/955a9d79583a0ab686256db8006672b8
Regards,
JPR
NIF

[SIT 5.0] Problem with running Simulink model dll on RT target

Hello!
This a continuation of my problem described here: http://forums.ni.com/ni/board/message?board.id=170&thread.id=431616
At the moment I am using following versions of software:
LabVIEW 8.6.1
LabVIEW Real-Time 8.6.1
NI-RIO 3.1.0
Simulation Interface Toolkit 5.0.0
Microsoft Visual C++ 6.0
MATLAB 7.4.0 (R2007a)
NI cRIO-9014
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Initializing...
Calculating dependencies...
Checking items for conflicts. This operation could take a while...
Preparing items for download. This operation could take a while...
Deploying NI_SIT_Replay.lvlib
Deploying NI_SIT_driversupportVIs.lvlib
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Deployment completed with errors
I was hoping that upgrading my software will fix all problems. But sadly, it didn't. Any idea? Many thanks for help!

Hello,
I also had quite a lot of problems using Labview 8.6.1, RT and SIT 5.0.1. I upgraded a software using Labview 7.1 and SIT 2.0.3 beeing used for 5 years now and it was real pain.
I not using the SIT as you are (just load the model from a DLL, use a timeloop to step the model and finally close the model) but it seems that SIT 5.0.1 has a bug (confirmed recently by NI tech support) concerning inputs and outputs if you are using an array.
It seems that if you use an array for the input during the transcoding of the simulink model to the DLL an index is not well taken into account resulting in a model not beeing able to read its intputs. In my case whatever the inputs data could be the outputs were always 0.
The model has been changed to use only scalar data and everything works fine, ... well using the developpement software :
I cannot generate an RT target executable as during the deployment it fails all the time.
I saw once a message concerning SIT VIs deployment errors and it happened shortly after i upgraded my target : SIT 2.0.3 was still installed after SIT 5.0.
I spent a few years without updating Labview and i am amazed at how many problems occurs with all versions above 8.0.
Good luck,

Using SIT connection manager with large simulink models is extremely slow

Hello,
I'm trying to use a large simulink model in LabVIEW but once the DLL is correctly generated and the SIT connection manager is invoked to explore the model sinks, sources and parameters, it takes hours to generate the model connections tree. Afterwards, when the connections tree is completed, it is impossible to handle it because every operation performed takes a lot of time and memory (i.e. to expand a block to see which parameters are inside).
The version of SIT I'm using is 2.0.3 with LabVIEW 7.1.
Is there anybody experienced with large simulink models and SIT?
Thanks and regards.
Ignacio Sánchez Peral
SENER Ingeniería y Sistemas S.A.
Control Systems Section
Aerospace Division
C/ Severo Ochoa, 4 (PTM).
28760 Tres Cantos (Madrid) Spain.
[email protected]
Tel + 34 91 807 74 34
Fax + 34 91 807 72 08
http://www.sener.es

The VI in the Driver VI called SIT Initialize Model.vi has an input called time step (sec) (-1: use model time step) which does what you want it to. It doesn't actually affect the time step of the solver used in the built model DLL, just the rate at which the main base rate loop actually runs in real time. In fact, base rate loop period would be a better name for this control. If you set it, you won't alter your model, but you will be able to adjust the rate of the base rate loop.
Simply create a control from this input terminal on your driver VI and fill in an appropriate period in seconds. Make sure to set this value as default in the control so that the Driver VI remembers it.
You will have to take into account that your model will still think it's running at the time step it was compiled at. So your model simulation time and the actual wall clock time won't match up.
Jarrod S.
National Instruments

Using Simulink models with CompactRIO via SIT

Hi there,
I am looking to use compactRIO for a Rapid Control Prototypig application and am wondering whether Simulink models can be used (via the Simulation Interface Toolkit) and deployed to CompactRIO. (I know that it is possible with PXI). Also, any ideas on ther expected performance?

Hi, RichM,
Yes, you can use SIT to create and download DLLs that come from Simulink models. Basically, the CompactRIO controller is like another RT controller, so it will be done exactly the same as in PXI. The only thing different in cRIO is that the model VIs that get scripted from SIT to do data acquisition are using Traditional DAQ VIs, so you will have to manually modify those VIs so they interface with the FPGA backplane using the Read/Write Control function. For information on how to modify the VIs, you can probably look at the following tutorial: Using CAN with the LabVIEW Simulation Interface Toolkit. This tutorial is for NI-CAN, but you can just abstract from it and use the same concepts with the Read/Write Control function.
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GValdes

Problem in converting a simulink model in LabVIEW 2010

hello,
I have developed a Simulink model in MATLAB which I want to convert into equivalent LabVIEW VI's. The simulink model is as attached. The problem here is:-
LabVIEW is not able to convert all the mechanical blocks named Ankle revolute joint, Body , joint actuator and joint sensor into equivalent LabVIEW VI.
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Attachments:
AAFO.PNG ‏19 KB

Hi Susheel,
RFC module interface parameters (import, export , tables) can only refer to data dictionary types. Hence if you currently have one of the parameters referring to a type defined in your function group main include or in a type pool, you need to create a SE11 data dictionary structure/ table type for that and then change the data type reference.
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Invalid Mapping with SIT for an outport inside a subsystem in a the simulink model.

Hello everybody,
I am trying to use SIT to target simulink models on a PXI target.
The simulink model contains a subsystem with an outport. I have created
a mapping between the signal coming out of that outport to a waveform
chart on the host VI. The mapping works fine when I run the model on
the local host but becomes invalid when I target the dll to a pxi
target.
I have been able to create a very simple simulink model and host VI
that is mimicking this problem. This model does
not do anything useful and is made to only demonstrate just this problem. I am attaching the model and the userinterface here.
Note:
I have already taken care of the fact that I can not use signal storate
reuse, block reduction and also cant use linked or linked+masked
subsystems. A testimony to this is the fact that I am able to create
mapping with other signals in the subsystem. Also outport is a virtual
block in simulink so I have created a testpoint on the signal going
into the outport to be able to probe it.
Any kind of suggestions would be appreciated.
Thanks and Regards,
Vicku.
Attachments:
files.zip ‏77 KB

You have two options to be able to probe this signal in the subsystem that should work fine for this small example you posted. Let me know if they also apply to your actual model.
You have the outport itself set as a test point currently in your subsystem block. Try setting the wire coming out of the subsystem outport as a test point and then rebuilding your dll. That should make the outport signal probable.
Instead of probing the actual outport, you could probe the signal in the subsystem that is wired into the outport. In the case of your example that would be using_subsystem/Subsystem/Sum1:1.
Hope this helps!
Message Edited by Jarrod S. on 08-23-2007 10:59 AM
Jarrod S.
National Instruments

How to use multiple Simulink Models on on Target and One Host VI?

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Just dawned on me to try and open two instances of Matlab, then set the SIT server on the second instance of matlab to a different port. This worked as I got two different simulink models to run. The question is, is there a better more efficent way of doing this? Any thoughts would be welcome.

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I am trying to compile a simulink model to DLL with following softwares and hardwares.
Software:
LabVIEW 8.0.1
LabVIEW Realtime 8.0.1
Simulation Interface Toolkit 3.0
MATLAB R13
Visual C++ 6.0 Service Pack 4
Target Hardware:
PXI-1042RTPXI-8196
PXI-6289
When I tried to compile a model including 'cmex' function on Simulink to DLL, compile error about Visual C++ occured. Does SIT support the model including 'cmex' functions?
When I removed the function 'cmex', compiling is working correctly.
To import original model which is written by C or other language, I strongly want to use 'cmex' functions. To avoid the compile error, if you have any ideas, please let me know.
Thanks,
Tsugo

Hello Tsugo,
I believe that it is possible to compile a DLL for SIT from a model that contains a cmex function.
To tell whether the issue is caused by SIT or not, you can try changing the RTW target file from nidll.tlc to grt.tlc (in the model's Simulation Parameters dialog, look in the Real-Time Workshop tab), and see whether the compile error still happens. If the compiler error occurs with grt.tlc, then please refer to the documentation provided by The MathWorks Inc. on how to get your cmex functions to work in Real-Time Workshop®.
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Thanks!
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Run labview file with veristand vi's

I want to execute my .vi with a PXI and I get this problem I have saved the dll. in veristand target PXI not in the Controller I have created a project and I have saved the Veristand files in C:\ of the PXI and I have the problem below I need special sofware I have installed all the avaliable veristand software in the PXI what can I do?
Attachments:
img.PNG ‏25 KB
prueba2.vi ‏21 KB

Hi Aim99,
I hope i fully understood what you meant to. So, you have two models. One Labview model, one Simulink Model.
What you shall do just:
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You will see then inports/outports your models. There you can map them as you want to.
Regards,
Rajamodol

Will LabVIEW talk to DAQ board made by Measurement Computing?

I am a senior at UNC-CH, working on a research project for a professor who has a DAQ board made by Measurement Computing, which looks very similar to NI boards I have used in the past. Model: CIO-DAS16/330 The software we're using is LabVIEW 5.0, and I need to know if there is any way to make LabVIEW talk to these boards? I understand that the best solution would be to buy an NI board that LabVIEW is configured to work with, but we don't have the money for that!

In article <50650000000500000017E00000-1042324653000@exchange.ni.com>,
"alberto" wrote:
> Hi Nicoletta,
> I checked on their site and they provide a library of LV functions to
> interface to their boards:
> http://www.measurementcomputing.com/cbicatalog/cbiproduct.asp?dept%5Fid=184&pf%5Fid=623&mscssid=HUXACAQX49EF8G7NLAUUX95WUP156JX5
>
> Good luck,
> Alberto
Yeah, I've used these libraries and they work fine. The library
package cost me $50 about a year ago. Most of their boards are
supported under the Comedi drivers so you can use them with
Linux if you don't want to pay for the MC libraries.
-Kevin

LabView talking with Simulink model

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