NI Visa - Shared Variable Engine

[almutasim]

Hi,

I am using labview Shared Variable Engine to create variables on my workstation and bind them to variables on my server.

I have labview 8.2 installed on my workstation and labview 8.5 installed on my server.

The communication between them worked perfectly and I was able to use the variables created in the workstation.

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In my application I need yo use NI visa to take serial input. So I installed the NI Visa on my workstation and the NI visa worked.

However, the Server was not able to see the variables I have created in my workstation.

Does this mean that NI visa do not work in parallel with the Shared Variable Engine, or does the NI visa change some of the settings parameters that would stop the Shared Variable Engine from working properly.

Thanks in Advance

[GoCougs]

Please give more information about what your server is (eg real-time target or Windows OS) and what the server is used for and also screen shots of code/actual code would be helpful to get a better idea of what you are having issues with.

[almutasim]

Actually in my Application I'm targeting a real-time data acquisition.

I would like to upload the data acquired through NI Visa to the internet through the web publishing tool.

I am using the server because my project is done in the university and the firewall of the network prevent any access from a website to my workstation.

Therefore, I contacted the IT department to open three ports between my workstation and server. These ports are:

• 59110
• 8086
• 8089

Thanks

[GoCougs]

Do you have 3 machines? As I see it you have a work station with Windows OS, a server with Windows OS and another machine with LabVIEW Real-Time OS installed. Is that correct? What kind of machine is your real-time target?

[almutasim]

Not really.

I have a workstation with Windows OS. This workstation have LabVIEW installed in it and I am using it for Real time Data Acquisition. The Data is coming from a USB port that is configured to work as a Virtual Serial Input.

The Workstation is Connected to the Server. The server OS is Windows.

[GoCougs]

This information helps me get a better idea of what you are doing, but I need much more information in order to help pinpoint what is happening in your application. You should absolutely be able to use VISA as well as the Shared Variables concurrently. What is the device that you are using for data acquisition? I'll need the model of the device. What kind of data are you acquiring? How are you using VISA to communicate with your instrument?

One other item is to look in the distributed system manager to see if your shared variables are actually getting updated

Any code you could post here would help as well.