Datasocket OPC/Matrikon OPC

[CLB69]

I have a datasocket based OPC client with datasocket open URL (the same as in the LabVIEW example). If I run the .vi on PC "A" and the client Matrikon OPC on PC "A", i find the variables and i can read them.

But when i tried to do the same with Matrikon OPC on a PC"B", i see the variables but when i tried to read them, the vi tells me the error 42.

I have no active firewalls and i can read the variables with Matrikon on the PC"B".

Does anyone have any tips on how to find and fix the problem?

[IDASYAN]

Hey, 

There is a good article related to the topic,  have you checked it? 

Also, the forum discussion as well.

There is a chance that you might need manually register a few DLLs , but at first I'll recommend checking the links I have shared.

Hope this will help!

[CLB69]

Hi,

Thanks for the reply but i've already checked the article. It's possibly the DCOM connection but i don't know how to check this...

I make my application (.exe) from this VI :

What do you mean by "You might need manually register a few dlls"?

Thanks

[IDASYAN]

Hey, 

For the DCOM, the best explanation, in my opinion, is this one. Also for NI you'll need to configure it, check this article.