polymorphic output problem

[oneFranck]

Hi,

I have a serie of polymorphic VIs, that leads to an output problems (broken arrow), see images.  I would like the case selector to handle 2 two types (purple and light blue) depending of if it is COM port or TCP/IP communication.

How can I do that? the select funtion isn't polymorphic enough ...

Thanks

FB

[Blokk]

Upload your actual VI(s), we cannot help by only looking at a screenshot...

[oneFranck]

here they are, the VIs

fb

[zou]

Use a variant.

[oneFranck]

Thanks Zou,

Thanks for the reply, have you an idea on how to do that?

[Blokk]

http://www.ni.com/white-paper/4998/en/ 

You can use the Variant as input or output for your subVI. You just need to know what is the expected data type to make the conversion. In this way you can use (almost) any data type...

[zou · Accepted solution]

[Blokk]

haha, now i got it 🙂

[mikeporter]

This could also be a good use case for OOP.

Mike...

[zou]

Or simply use VISA for both TCP/IP and COM.

Take a look this document:

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA03q000000x3gXCAQ&l=en-US