How to access OPC XML-DA server in Ignition SCADA software?

Ignition
1

Hi,

It is my first time to develop a SCADA software. There is an OPC XML-DA server in the project.

I found a Web Service module, which is provided by Sepasoft, a partner of Ignition.

https://www.sepasoft.com/web-services/

Could you please let me know if it works or not?

I really appreciate it if you like to recommend other OPC servers which work well in your experience.

Thanks,
Wayne

2

No, XML-DA is a specific (old) OPC protocol, not some generic web-related thing.

Ignition doesn’t support OPC XML-DA, so you’ll need either some kind of “tunneler” product that can convert it to OPC Classic (DA) or OPC UA or a different server altogether.

When we don’t have a particular driver Kepware is a recommended alternative OPC UA server.

3

Hi Kevin,

Thank you very much!

Do you have any suggestions if I try to build such an OPC-UA driver module based on those APIs you provide?

Wayne

4

Well... I generally wouldn't recommend it unless you have no alternative (and a lot of programming experience).

5

Thanks Kevin for your prompt feedback! We will evaluate these options and then make a decision.

6

Hi Kevin,

I found Kepware OPC server only works for Windows, but we need one for Linux. Do you have any suggestions about it?

Thanks,
Wayne

7

I’m not aware of any other OPC servers that work on Linux.

8

OPC-DA uses the Windows Active Domains for security. So it’s hard to find something for this on Linux. Even ignoring that XML part.

9

I find it a source of great irony that the infrastructure part of a project, the bit you want to be most reliable, depends on Windows instead of Linux…

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10

That's the number one reason I wrote an Ignition driver. Ignition is the only real player in non-Windows OPC/UA that actually has drivers.

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