Failed to connect to Ignition OPC UA Server by using node-opcua

The S7 driver has no browse support. From a 3rd party client you wouldn’t see any tags for it, unless you have created Ignition tags that manually address the data, and you have the Exposed Tags feature enabled.

Hi Kevin,

Yes, I created tag under tag browser.
I have enabled "Expose Tag Providers".
I can drag and drop the configured tag from "Root/Objects/Tag Providers" to the "data View" of Matrikon OPC explorer, but somehow this tag does not have live value displayed, as uploaded in previous reply.

As you mentioned, is it because S7 driver does not support the "browse" function, so the live value won't be displayed?

No, if you have created a tag in Ignition, and you can see it in Matrikon, then it should be fine. If it updates in Ignition it should also update in Matrikon if you’ve subscribed to it. Try UaExpert as well.

Tried UaExpert. Great Tool.

I can see the live values this time.

Thanks.

Now it's time to move on to the next step to use Nodered or python to read the edge OPC Server tags.

Refer to the video below, I tried the node red as OPC UA client, it works.