Hi,

I am using OPCUA4Unity in my Hololens Unity project. An exception is thrown when I try to connect to an OPCUA server from the Hololens. Here is the output:

"The type initializer for 'Opc.UaFx.Client.OpcClient' threw an exception. at game4automation.OPCUAConnection.Connect () [0x00000] in <00000000000000000000000000000000>:0
at game4automation.OPCUA_Interface.Connect () [0x00000] in <00000000000000000000000000000000>:0"

I am able to connect just fine in Unity Editor, but not when connecting in Hololens.

I have ensured that the build settings are correct (IL2CPP, .NET 2.0 compatibility), and have set the permissions to allow internet access in Hololens. I am on Unity 2018.4.8f1, and have tried upgrading my project to 2019.1.14f1 but that did not fix the issue.

Let me know if you need more information!

Dear game4automation team,

so far the OPCUA4Unity asset works very smooth. Great work!

In my project I tried to update my data like you show in the DemoTextWithDelegate example. But the subscription object returned in OPCUA_Interface :

sub = connection.SubscribeNodeDataChange(nodeid,del);

is pretty much empty:

I used UAExpert to test the subscription with the same node id, which worked. As far as I can tell I do not get any warnings or errors. Here is my code how I subscribe:

private OPCUANodeSubscription _safetyLevelSubscription; //subscription is a class member
[...]
_safetyLevelSubscription = _interface.Subscribe(node.NodeId, SafetyLevelNodeChanged); //this is the call
[...]
 public void SafetyLevelNodeChanged(OPCUANodeSubscription sub, object obj) //this is the delegate signature

Now, I noticed that the OPCUAInterface gameobject holds pretty much all the nodes of the top node as childs and keeps them up to date. At least in the editor. Wouldn't it be best practice then to always access those child OPCUA_Nodes instead of adding an additional subscription?

Thanks for your thoughts!

JG

EDIT:

Maybe I should add, that the delegate is not called when the value on the OPC UA server changes. I assume it is due to the null ptr in the subscription. Also, I use a codesys opc ua stack.

Hi all!

I am using the OPCUA4Unity asset in my project. When I run it on android devices an exception is thrown in game4automation.OPCUAConnection.Connect(). Here is the full output:

The type initializer for 'Opc.UaFx.Client.OpcClient' threw an exception. at game4automation.OPCUAConnection.Connect () [0x00000] in <00000000000000000000000000000000>:0
at game4automation.OPCUA_Interface.Connect () [0x00000] in <00000000000000000000000000000000>:0

UnityEngine.Logger:Log(LogType, Object)
game4automation.OPCUA_Interface:Connect()

I am able to run it in Unity Editor aswell as Win Standalone App. I am also able to connect with another OPC UA client from the same android device to the server.Is Android not supported?

Please let me know if you need additional infos!

JG

안녕! OPCUA 시험 버전이 있습니까?

나는 경험하고 구매하기로 결정하고 싶다.

is it possible to call method of OPCUA server?

I bought the OPCUA4UNITY asset recently, then I set up a simple opcua server with python-opcua (code is here). It’s able to connect the server, import the nodes, but there is no data showing in the inspector when I click the “Update Node” button.

I tried to debug in VS. It seems the "Value" property of opcNode is missing.

Then I used OPC watch, the value can be read.

I also tried other opcua servers, like UA-.NETStandard has the same problem and another problem is it cannot import all the nodes in unity.

For “OPC UA C++ Demo Server V1.7.0” server, value can be read correctly, but it cannot import all the nodes in unity.

I have struggled several days, please help me, thanks a lot!

Hello. I have since bought your OPCUA4Unity, and followed your tutorials in the YouTube video. I wish to refer to your Text with Delegate text. I tried doing the same thing but i am unable to output anything to my game. I am able to type in the "Text From OPCUA Node" and it comes out in the game. May I know how did you connect the script to the string that you wanted for display? 

In my case, I wish to reference it to the "Value". I have tested running your OPCUA_Node and Interface and they work well (sweet!) but as we know it does not show up in the game scene. So I hope you may advise me on what are the steps needed. Thank you!