datasocket read stop but shared variable can be updated

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• Are published network shared variable write & read Atomic actions

  Hello

  I have a very basic question about shered (published network) variable.

  I think I know the answer already, but since I couldn't find in my documentation, I thought that it is more prudent to request...

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  Hello Rob,

  Yes, you can access the entire value, data type - you use both. For the table data type, the integer value is actually the full picture. So, Yes, you can see reading and writing as Atomic actions.

  But, on the other hand, you can lose data if the RT system rewrites the variable before the host had the time to read. To avoid this, you can enable buffering for the variable. See the following links for more information:

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  Problem solved!

  Update for interested people working on XP Embedded PTC

  Just to ensure that shared Variables were indeed accessible to the TPC, I wanted to install Distributed Systems Manager 8.6 on the TPC. However given that the TPC was only 1 GB of DOM (disk on memory) and with all the software that I had tried, there remained only a few megabytes on the system. I had to add an another DOM of 2 GB.

  All products in the Installation went well, with the exception of the Logos NOR (Version 5.0). Logos OR installation has failed repeatedly.  I tried to install NI Logos separately, with the same results. Then I had this intuition that NI Logos had anything to do with the question.

  Then, I downloaded the new version of NI DSM 2009 SP1. Even if it were to settle on any fresh system without Labview, the installation would not proceed beyond the stage of configuration. I tried to install NI Logos of the folder on the download of new products separately and it worked magically!

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• cRIO, shared Variables & stand-alone application

  Hello!

  I developed an application very simple acquisition of analog (NI9215) and the activation/deactivation of outputs signals digital (NI9472) using a cRIO (9012). Data are transmitted to the host through shared variables program.

  I created an executable of the code to be run by the cRIO, set it to the "launch on startup" and it worked.

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  Hi zyl7,

  Thanks for the post!

  This is a common problem - I think...

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  Perhaps in clearer terms.

  When you make an exe of a project using shared variables, you must have a local copy of the variables on the deployment computer which are then related to the 'real' shared variables stored on the target - cRIO, in this case.

  This means that in the view of your project:

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  (2) create variables shared on the host PC - llb under the Pc host in the project and then select the aliasing and how to link to YOUR PSP.

  Let me know how it works,

  Kind regards

• shared variables does not not on PC

  Can someone tell the attached page, why my single variable sharing does not work with the LabVIEW application that I'm running on my PC. I put the variable 48 (I thought), and again in la OR Distributed System Manager, the value is not changed.

  Reset that my PC seems to have understood things works better. The VI is now able to read/write the shared variable.

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  [Please do not quote or copy/paste my posts in your responses.] Just answer by number. [Thanks.]

  REPOST...

  1a. is Norton Backup installed yet and if so, do you use it?

  1B. you purchase & install Norton Backup or is preinstalled on the computer when you bought it?

  2 have you ever run the Norton Removal Tool and McAfee Consumer products removal tool you bought the computer in November of 2013?

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  4 KB3087038, KB308,7039, KB3086255, KB3087918, KB3084135, KB3069114, KB3074229, or KB3082089 listed in installed updates (not updated story [1])

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  =======================================================
  [1] Control Panel | Programs and features. See installed updates (in the left menu)

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  HI Jörg,

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• TPC-2012 cannot read the shared variable

  Hello

  I have a TPC-2012 and can not read variables shared with him. I welcomed the shared on a cRio-controller Variable. On another PC, the variable is read correctly, but not on the tpc-2012. What can I do? No error message is displayed on the TPC-2012 (Windows CE 5). The PTC can not write values in a shared Variable.

  Thank you

  Christian

  What LabVEIW Touch Panel version do you use? I don't know why static variables do not work correctly on your device. TPC-2012 comes with support preinstalled for shared variables, and it would be possible that it has been deleted or corrupted. Here are some steps you can follow:

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  How do we install the Support of Variables shared on the TPC-2012?

• Why cant a shared variable be read as a diagram in SignalExpress

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  Kind regards

  Frank Greenslade

  Christchurch

  New Zealand

  I found that the problem was the type of data. SignalExpress discovers double graph table.

• VBAI: How to read a shared variable?

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  Any ideas on how to implement such an architecture?

  I create two different States and use the transitions that are based on the value of the shared variable. You can read the value of the variables or the previous measures in stages that allow this (not all stages, but most don't) or transitions. To create a new State, go to the state diagram (click on the 'toggle window view hand' so the State-transition diagram is in the main part of the window). Right click in an empty part of the state diagram and select "create a new State".

  To create a transition, right-click on a State and select 'Create a new Transition' and drag the transition to the new State.

  To change the transition, double click it and you will be able to select the shared variable as measurement, and comparison operations to make the decision. If this comparison is false, the default transition is taken instead.

  Select help > Show context Help if you change the schema of the State for more details on how to use it.

  Hope this helps,

  Brad

• read into the buffer variable published network shared

  

  I use a shared variable that is published in the network buffer to write data to an RT target and read data buffered by the host application.

  I followed a different behavior regarding data buffering using Variable vs reading read the shared Variable node.

  There is no problem the shared variable node read but using the results of reading variable function of loss of data, such as access without alkaline reserve. I can read only some of my data values.

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  against

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  Christian

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• shared variables stops when I use RT Set date and time.vi

  Hi all

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  As soon as I started using this vi, I noticed that my shared variables would either stop updating, or slow down considerably (this includes loss of data during the transfer of data between the PXI to host PC with shared variable). I do not receive any errors or warnings from any of my shared variables, and no errors are generated when using the RT set time and Date vi, so im at a loss for where to start. Ive disabled this feature for now and my system works well again, but I want to get this to work because the timestamps generated in the data by the RT system are out and I need a method to synchronize the time with the host pc.
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