# Connecting to Node opc-ua

**URL:** <https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982>\
**Category:** Ignition\
**Created:** [May 5, 2015, 4:32pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982 "2015-05-05T16:32:20Z")\
**Posts on this page:** 9\
**Page:** 1

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**Author:** ![NoX](https://avatars.discourse-cdn.com/v4/letter/n/b4bc9f/32.png) [@NoX](https://forum.inductiveautomation.com/u/NoX)\
**Post date:** [May 5, 2015, 4:32pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/1 "2015-05-05T16:32:20Z")

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Hello,  
I’ve some problem while trying to connect Ignition as a client to a Node-OPCUA ( [node-opcua.github.io/](http://node-opcua.github.io/) ) server . Ignition connects correctly to the server (“simple server” demo) but I’m unable to access the exposed variables with the Quick Client. I’ve tested the same server with another opc ua client and works correctly, I can access the variables.

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [May 5, 2015, 4:37pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/2 "2015-05-05T16:37:28Z")

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You can’t see them while browsing? Or you can’t read them?

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<div class="post-metadata">

**Author:** ![NoX](https://avatars.discourse-cdn.com/v4/letter/n/b4bc9f/32.png) [@NoX](https://forum.inductiveautomation.com/u/NoX)\
**Post date:** [May 5, 2015, 4:41pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/3 "2015-05-05T16:41:30Z")

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I’m unable to access the exposed variables while browsing the server with quick client.

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**Author:** ![NoX](https://avatars.discourse-cdn.com/v4/letter/n/b4bc9f/32.png) [@NoX](https://forum.inductiveautomation.com/u/NoX)\
**Post date:** [May 5, 2015, 4:45pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/4 "2015-05-05T16:45:52Z")

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Here’s a screenshot: [i.imgur.com/kQPv2D8.png?1](http://i.imgur.com/kQPv2D8.png?1)

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [May 5, 2015, 5:00pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/5 "2015-05-05T17:00:22Z")

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Can you capture the traffic between Ignition’s client and the node server with Wireshark and post it here or email it to me?

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<div class="post-metadata">

**Author:** ![NoX](https://avatars.discourse-cdn.com/v4/letter/n/b4bc9f/32.png) [@NoX](https://forum.inductiveautomation.com/u/NoX)\
**Post date:** [May 5, 2015, 5:26pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/6 "2015-05-05T17:26:53Z")

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Sent via pm

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [May 5, 2015, 5:52pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/7 "2015-05-05T17:52:19Z")

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The server simply isn’t returning any nodes other than what you see in response to browsing the Server node. Are the variables you’re expecting to see being added with a non-hierarchical reference by chance?

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [May 5, 2015, 6:00pm UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/8 "2015-05-05T18:00:50Z")

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You know, I just looked at the node-opcua server example and it looks like it adds the folder and nodes to the root of the address space. Ignition’s OPC-UA client doesn’t browse from root, it browses from the Objects folder.

If you modify the example to add things starting from the Objects folder you’ll probably see the nodes you’re looking for.

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**Author:** ![NoX](https://avatars.discourse-cdn.com/v4/letter/n/b4bc9f/32.png) [@NoX](https://forum.inductiveautomation.com/u/NoX)\
**Post date:** [May 6, 2015, 9:25am UTC](https://forum.inductiveautomation.com/t/connecting-to-node-opc-ua/9982/9 "2015-05-06T09:25:26Z")

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[quote=“Kevin.Herron”]Ignition’s OPC-UA client doesn’t browse from root, it browses from the Objects folder.

If you modify the example to add things starting from the Objects folder you’ll probably see the nodes you’re looking for.[/quote]

Yes, now it works! Thanks
