Scale cRIO NP Shared Variable AFTER Deploying an Executable

I have a project coming up that has about 140 shared variables deployed on an RT target and sharing data at 1S/s over the network. There is nothing else going on concerning the RT target, just dumping values. I would like to scale these SV's in the .lvproj to avoid having to write a bunch of scaling code in software.
My only concern is what happens when I have an executable application running (without LV 2012 installed on the computer). How would I re-scale these values without having access to the .lvproj? Distributed System Manager doesn't provide for this. Any help would be appreciated. Thanks.
Nathan - Certified LabVIEW Developer

Hy Nathan,
Your Shared Variables are within a library in you LabVIEW project. In your Application Properties make sure to include that library. This is shown in Figure 9 in the below white paper.
http://www.ni.com/white-paper/9900/en/
MJ
Application Engineer
National Instruments

Similar Messages

Shared Variable Not Deploying

I'm having a hard time getting the shared variable to deploy on the C root of the computer.
The following error comes up each time I try to deploy the Lib
Deploying Untitled Library 1\\192.168.0.12\Untitled Library 1 deployment failed (error: -1967362042, IAK_SHARED: (Hex 0x8ABC7006) Unable to start service.)
I've tried uninstalling and installing labview and it's components.
I would appriciate any help.
www.movimed.com - Custom Imaging Solutions

Joey,
Thanks for the response.
The service will not start. I get the following error attached.
The document suggest reinstallation of the DSC Module, problems is I do not have DSC installed. We do not have a lincense for it.
Dan,
www.movimed.com - Custom Imaging Solutions
Attachments:
Service Start Error.png ‏27 KB

Deploying cRIO as Shared Variable Engine

I am finishing up a project where a crio will be continuously recording data and the computer is running a program that will download the data once daily as well as comunicate with the program running on crio device over shared variables. Since the crio will be using a cellular modem to connect to the internet, connection loss is expected. For this reason we have made the crio serve the shared variables so that if connection is lost to the PC, the crio will continue to record data normally without problems when it writes to or reads from the shared variables.
The crio will be running headless. I built a real-time application and deployed it as startup successfully on the crio device without warnings or errors. I connected to it via font panel to confirm it started up and is working properly. I will eventually use the application builder to build an installer that will install everything needed to run the program on the PC side. However, when I open the 'Belle Glade System PC' and run it, it attempts to deploy the shared variables on the crio device. It warns me that it will close any applications running on the crio device. This is not what I want. The shared variable engine is already deployed on the crio device and the program is running. All the PC program (Belle Glade System PC) needs to do is run and connect to the shared variable engine already deployed. I am obviously doing something really fundamentally wrong here and I could use some help.
[will work for kudos]

I apologize for not posting the solution to the problem.
Basically what you end up having to do is create two nearly identical shared variable libraries, one on the pc and one on the crio. The library on the PC has each of its shared variables binded to the corrosponding variable in the cRIO Shared Variable library by PSP URL (ip address and variable location). To do this, open the PC shared variable library and go to the properties of a specific variable. Check "Enable Aliasing" and under the bind to drop down menu select PSP URL. Then hit browse and find the variable on the crio. Do this for each of the variables on the pc.
This option does not seem to be 100% reliable as it has trouble detecting connection problems between host PC and crio device. This is because shared variables look for a connection to the shared variable engine. However, both the pc and the crio have their own shared variable engine running as a host so there is always a connection as far as it knows, lol. This solution worked ok for me since I could not find a more relable option.
There is a better explaination on this post: http://forums.ni.com/t5/LabVIEW/cRIO-Shared-Variables-amp-stand-alone-application/m-p/797139?query.i...
[will work for kudos]

Not able to access Network Shared Variable when deployed in PC

Initially, when we deploy a Network Published Shared Variable in PC and try to access the same (Read/Write) from RT, we get an error/warning "-1950679023". But when we access the same variable from the PC, it works fine. In the distributed system manager, we can see the variable getting deployed. Also the value changes in Distributed System Manager if we write a value from PC. The attached image "Shared variable Issue.png" will give more understanding of this issue.
The other way round it works fine i.e deploying in RT side and accessing from both RT and PC is working fine.
We also see that the network adapter settings is not loading properly in MAX, if at all we install any software in RT. With no software installed, it loads properly.
The following were the steps that we tried to solve the issue.
1.Flushing the entire NI software and Re- installing again
2.Formatting the RT(PXI).
3.Removing the EtherCAT Card and testing.
4.Checked the network properties of the RT network.
5.Checked the IP/Subnet/Gateway settings.
6.Checked Firewall Settings, If Shared Variable Engine is accessible.
Attachments:
Shared variable Issue.png ‏491 KB

First Root cause needs to be identified before any actions.
I would suggest first check if you can access the shared variable hosted in PC from RT using other ways like using SVE API (Logos and PS protocols, Datasocket etc..)
Check if antivirus or firewall is playing...
Check the same experiment with some other PC if you can.
You can also try creating another Shared Variable in RT and binding the same to the PC and try to access it...
Since you have did all the reinstallations already
Best Regards,
Vijay.

Can't set intial value for cRIO boolean shared variable

LabVIEW 8.0 gives me a configuration error when I try to force an inital value for a Boolean shared variable in my cRIO library. Is that a bug, or am I overlooking some (probably obvious!) limitation of the cRIO hardware?
Jeff
Climbing the Labview learning curve!
Sanarus Medical
Pleasanton, CA

There are 3 screenshots attached to this post. Suppose I create a Boolean shared variable under My Computer in the project directory, then set the inital value as shown in BooleanInitialValue.gif.
If I drag a copy of that Boolean shared variable to my RT target block diagram, the run arrow breaks and I get the error shown in ErrorList.gif.
If I create a Boolean shared variable under my Real Time target (Compact RIO) in the project directory, then set the initial value and hit OK, I get the error shown in FixConfiguration.gif.
Message Edited by Jeff in Pleasanton on 07-19-2006 03:42 PM
Message Edited by Jeff in Pleasanton on 07-19-2006 03:44 PM
Jeff
Climbing the Labview learning curve!
Sanarus Medical
Pleasanton, CA
Attachments:
FixConfiguration.gif ‏6 KB
BooleanInitialValue.gif ‏13 KB
ErrorList.gif ‏13 KB

Error executing the Query after deploying and executing the application in WLS 6.1 SP3

Hi,
We are trying to run a application by deploying a war file on Web Logic Server
6.1 SP3. After deploying and at the time of execution of the application, the
server console displays this error message
java.sql.SQLException: ORA-00600: internal error code, arguments: [ttcgcshnd-1],
[0], [], [], [], [], [], []
While debugging thru the application we found that this error comes at the time
of execution of the query thru the Statement.executeQuery method of java.sql.Statement
class.
This same application when deployed on Web Logic Server 8.1 runs perfectly, without
any hitches.
Please, provide me the solution to this asap.

Look for sometime around November. No exact date.
Eric
"Dominic Tulley" <[email protected]> wrote in message
news:[email protected]..
Thanks Eric,
you know what I'm going to ask next right?
Any ideas when SP4 comes out?
Cheers,
-Dominic
"Eric Gross" <[email protected]> wrote in message
news:[email protected]..
The next version of Apache that we will support will be 2.0.42/2.0.43
and
the module for that will be included in the next Service Pack for6.1(SP4)
and 7.0(SP2).
The problem with Apache 2 is that when a new release comes out a newmodule
needs to be compiled. Most of the time. For 2.0.42/2.0.43 this is notthe
case.
Regards,
Eric
"Dominic Tulley" <[email protected]> wrote in
message
news:3da3f246$[email protected]..
I'm trying to set this up (initially just apache in front of a single
WLS
server but ultimately I want to put it in front of a cluster).
I've installed Apache 2.0.40.
I've copied the mod_wl_20.so file into the apache modules folder.
I've edited the httpd.conf file and added the line:
LoadModule weblogic_module modules/mod_wl_20.so
When I run apache -t to check the configuration I get the following:
C:\Program Files\Apache Group\Apache2\bin>apache -t
Syntax error on line 173 of C:/Program Files/Apache
Group/Apache2/conf/httpd.conf:
Cannot load C:/Program Files/Apache Group/Apache2/modules/mod_wl_20.sointo
server: The specified procedure could not be found.
So what's going on here?
Looking at previous postings it sounds like there's an issue with
versions
of apache after 2.0.39 but I can't find a download for that version.Also,
it sounded like the issues were for WLS 7, not 6.1. Can this work
with
2.0.40 or am I wasting my time?
If I get the mod_wl_20.so from dev2dev I get the "incompatible plugin"
message that has been mentioned in this group already.
Any suggestions appreciated,
-Dominic

Front Panel binding of shared variables very slow initialization / start

Hello @ all,
I am using a server running Windows2000 and LV 8 DSC RTS for datalogging. All shared variables are deployed on that server.
I am now facing the problem, that all front panels running on the clients using the network shared variables on the server take very long to sync on startup. First the flags on the controls bind to the shared variables turn red, after up to ten minutes they start to turn green. The panels use up to 40 controls bind to the shared variables.
All firewalls are turned off. I tried to connect the client to the same switch the server is connected to. Same problem. Does anybody have a clue?
Thx for your quick answers.
Carsten

While I can't offer any solution to your problem, I am having a similar issue running LV8.0 and shared variables on my block diagram (no DSC installed).
When using network published shared variables, it takes anywhere from 30 sec to 4 min from the vi start for any updates to be seen. Given enough time, they will all update normally, however this 4 minute time lag is somewhat troublesome.
I have confirmed the issue to be present when running the shared variable engine on windows and RT platforms, with exactly the same results.
In my case, the worst offenders are a couple of double precision arrays (4 elements each). They will normally exhibit similar "spurty" behavior on startup, and eventually work their way up to continuous and normal update rates. Interestingly enough there are no errors generated by the shared variables on the block diagram.

SLOW PERFORMANCE OF SHARED VARIABLES

Hello,
We have developed application in LabVIEW 8.6.1 for testing mechanical equipments using cRIO 9074 (Real Time controller).
In this application we have used shared variables (Network published) for communications between Real Time controller and Host PC. All shared variables are deployed on Host PC.
Now we want to access the same application(Host PC application) from Tablet PC through wi-fi connectivity.
We have created two seperate .exe to run the application on Host PC and Tablet PC.Shrared variable response for Host PC .exe with RT controller is good,but when we run Tablet PC .exe then response is sluggish(slow).
In this case we create shared variables on Host PC (Network published) and tying to access it from Host PC and Tablet PC.
In our application,
1)Both Host and Tablet PC operate on Windows XP.
2)Programs on Host and Tablet PC are identical.
3)Both PC's are on same subnet.
Please provide appropriate help on this issue.
Thanks in advance....
Sachin

Have you seen this?

Shared variables problem

I have 2 applications runnng in different PC connected to the same network
Both applications are for testing purposes before going on with the real implementation. Written in LV 8.5 and based on Shared Variables.
While everything is fine when those application run on the same PC (in effect, localsystem), nothing seems to work when each is active in the proper PC.
Shared variables seem not to be seen from outside the PCs.
This happens also when I use Variable manager on both machines: I create a variable on PC1, defining it as published. Then I create another variable on the other machine (PC2) and try to bind it to the variable deifned in the PC1. Pressing the Browse button the list of PCs networked to mine appears. Selecting th eone I need (PC1), Variable Manager tries to populate the tree but hangs up. Or, better said, simply does not populate the tree. The ariable Manager still works but the item son the other PC are not seen.
Any suggestion?
Regards
Walter

Hi there,
I'm having a very similar issue. My set up is 2 pc's on the same network, the "server" (date generated on this pc) running LV 8.0 ip#1, the other is running LV 2010 and will only see the data, ip#2.
I have set up two test network shared variables and configured them on the server machine Ip#1 to bind to ip#2. When I run the vi's I see that the shared variables are deployed to the particular machine.
On ip#1 I included a test vi in the project to read data from the ip#1 shared variable, and I see no data. I have other local shared variables working within ip#1, but the network shared variables cannot be read even within the same project.
Any ideas as to why I cannot read the networked shared variable within the same project on the same computer?
Also the link about multiple network-adaptors is dead. I have seen strange issues when configuring the networkd shared variables if I have a VPN sessing going to an outside network on both computers, I will see both the windows computer name and the ip address.
Is there anyway to delete a computer after adding it as a shared variable potential source?
Thanks for any help, there are a couple of questions here.
Jim

How do I setup shared variables between executables created in sepparate projects

Hello,
I have several sepparate projects with their own respective executable files and I would like to be able for these executable files to all share the same variable (one program controls the value of the variable, while the others read from it).
I got this setup to work on my personal computer (by being able to access variable manager, etc), but I need to deploy these executables on different computers that don't have the labview development program. What steps do I need to do in order for me to be able to put these executables on any computer (I'm assuming I need to setup a path for the shared variable that is always in the same folder, etc)
Thanks
Vlad
Solved!
Go to Solution.

Hi Vlad,
I think this article may answer some of your questions regarding shared variables in deployed applications.
http://zone.ni.com/devzone/cda/tut/p/id/9900
It sounds like you already have your executables built, but this article may answer some questions about deploying them to other machines.
http://zone.ni.com/devzone/cda/tut/p/id/3303
Jeff S.
National Instruments

Binding a shared variable to a NI-PSP data object does not work

Hi,
I want to share data between a RT-target and one or more hosts (LV 8.6.1). The network shared variables are deployed to the RT-Target. According to NI accessing shared variables from another project or host has to be done by defining a shared variable on the host and aliasing it to the NI-PSP data object on the target.
I did that and the host shared variable generated an error (0x8BBB0011) during runtime.
Next I aliased to a shared variable deployed on the host from another project. This did work.
Another thing I tried was to bind the variable from the RT-target to a display element:
This is working !!! And as you can see the path of the NI-PSP data object is exactly the same ! So what is the difference between binding a data object to a shared variable and to a display element?
Is there a bug in the SVE or am I missing something here?
The host project:
The publisher VI
Hope, someone has an answer.
Regards
Matthias Quade
Solved!
Go to Solution.
Attachments:
AliasTestWrite-RT.vi ‏8 KB
AliasTestConsumer.vi ‏8 KB

Dear Mr. Quade,
thank you for posting at the National Instruments Forum. There is a known issue with the path of the bound variable with LabVIEW 8.6.1
Please download the patch for LabVIEW 8.6.1, it should solve your problem:
http://joule.ni.com/nidu/cds/view/p/id/1255/lang/de
Best regards from Munich
MarianO

Where can I find the "Shared Variable Properties" VI to be used in my program for configuring SV remotely?

I was using the "configure Alarms" and "configure Logging" VIs to design two user interfaces to make use of these VIs when I came across a problem. In both VIs you can enable logging of alarms. So which one is valid? Which one has priority? Then I looked at the "Shared Variable Properties" built into the project explorer. Now I realize that I am spending all of this time redesigning this properties dialog (which also has two options of enabling logging of alarms (on the Alarms tab to the far right side as well as on the Logging tab). So now my question is, how do I access this "Shared Variable Properties" dialog through my program (Note: this would be on a different machine than where the shared variables are set up. The point is to configure shared variables remotely).
Thanks
Matt

Here is a VI I re-created and posted for all. I'm not sure why NI doesn't provide their VI to the developer. The only thing I can't figure out is that when reading in the "Ack Type" into a variable, it generates an error. It will work if you go into "project explorer" and right click on the library with the shared variable and "deploy" but eventually stops working. I have tried using the "undeploy library" and "deploy library" to see if this would be a work around but had no success.
Just pipe the path of the shared variable into the vi.
Mattk
Attachments:
Shared Variable Properties.vi ‏95 KB

How many clients subscribed to shared variable engine

Hi,
I have shared variable engine deployed on RT and want to know how many clients get access to the shared variables. Is it possible? Thanks!
Tom

Theoretically there is no limit for the number of clients (maybe there is a 2^32-1 limit somewhere I don't know about).
However, more clients create more threads and the CPU usage will increase.
So you shouldn't use that much clients or host the SVE at the host computer if possible.
Christian

Is it possible to use a Shared Variable within a Chart?

I have a shared variable between a container report and a subreport called {@ResponseCount}:
whileprintingrecords;
shared numbervar Responses:= DistinctCount ({Survey_Response.RecipID})
I placed the variable in the report footer and the value is passing correctly. I would like to use this shared value in a chart; however, it is not even listed in the Chart Expert as an available field. I was placing the chart in Report Footer b.
I have also tried moving the variable value to the Report Header and placing the chart in the Report Footer, with the same result.
I tried changing the variable to a global variable, thinking that I was using the incorrect scope, but that passed a zero value instead.
Any suggestions would be welcome. Thank you.

Thank you for the response. Though I almost gave up on this, I did find a way to access the shared variable after all. I created a formula that simply called the variable formula. For this example, I was using a shared variable to pull a value from my container report into my sub report for use in a chart.
In my container report I created the shared variable {@Get_Responses}:
whileprintingrecords;
shared numbervar Responses:= DistinctCount ({Survey_Response.RecipID})
In my sub report I created the formula to call the above variable {@Fetch_Responses}
whileprintingrecords;
shared numbervar Responses;
Then, again in my sub report, I created a second formula to call the above formula {@ResponsesForChart}
{@Fetch_Responses}
This last formula was then available for use in the chart I needed to create.

Configuring Database for logging to citadel Database using shared variable engine

Hello All,
I have two systems with me here, one with LabVIEW 8.5 and one with LabVIEW 8.6, I'm using Shared Variables in my code and I am Logging to citadel Database. In a PC with LabVIEW 8.5, I am able to Log Data to citadel Database, but with the same code I am not able to Log Data from the PC with LabVIEW 8.6. Both the PC's have Database Installed and the connection with the Database Exists when I test connection with database through control panel. I would Like to know any configurations (in LabVIEW or in code or in Database or in PC) that have to be done for Logging to Database because the PC with LabVIEW 8.6 was added recently and the code was upgraded to 8.6.

It was due to a dll in LabVIEW, a dll named nitaglv.dll
Now I have a issue with Data Logging from the EXE, once the shared variables are deployed programatically from the EXE the Data Logging stops,
can I get any input on this issue..???

Scale cRIO NP Shared Variable AFTER Deploying an Executable

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