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LabView IO Class Implementation Query

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Hi All,

 

I have a problem with a correct implementation of IO control. The problem goes like this.

 

I have a user interface for a DUT which uses TCPIP, Serial and USB connection. On user interface, type of connection is selected from a drop down. which lets user input address of the DUT. This loads the appropriate class implementation for the module.

 

_T_M__1-1693926463261.png

 

I am trying to avoid having three IO input controls on the interface, and ideally trying to avoid creating abstractions for the parent class to implement the required class. 

 

I have tried type casting but there are mismatches at different parts of the code where some methods are expecting TCPIP instr. session as an input. I will need to use type casting in a lot of places and I am trying to avoid it. 

 

"To a more specific class function does not work with IO VISA Class".

 

Is there a more cleaner way to programmatically select correct VISA class?

_T_M__2-1693926984315.png

 Any help will be appreciated! 

 

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Accepted by topic author _T_M_

In few words...

 

IVI: Interchangeable Virtual Instrumentation. VISA isn't where you want to be.


"Should be" isn't "Is" -Jay
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Thank you for your help 🫨

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