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Questions - opc-ua

Python OPC UA call method without arguments gives error

I am trying to call a method with no input arguements which is as follows : [1] [1]: https://i.stack.imgur.com/tGFe9.png So far I have tried this : method=client.get_node("ns=5;s=Demo.StateMachi...
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Akhilesh patti

python

methods

opc-ua

opc

Votes: 0

Answers: 1

Latest Answer

The server is telling you this method cannot be executed. There doesn't appear to be anything wrong with your client, check the server configuration.
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Kevin Herron

OPC UA client: Call Methods

I'm Trying to call a method from a OPC UA server device. this is the method: StartScan Method It contains Two Arguments: InputArguments OutputArguments I'm not able with my code: from opcua import Cli...
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Leonardo Tavolari

python

opc-ua

opc

Votes: 0

Answers: 1

Latest Answer

You have to get the parent object and use call_method from it. The first parameter is then your method. This should work. method = client.get_node("ns=3; i=7009") parent_obj = "ns=3; i=...
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Schroeder

Is there a client side mechanism like the `NodeFactory` to create nodes on the server recursively?

the server can use the NodeFactory to recursively create nodes based on an ObjectTypeNode. Is there a similar mechanism for the client? To be more precise: Can i use the servers's objectTypeManager.re...
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kKdH

java

opc-ua

milo

Votes: 0

Answers: 1

Latest Answer

No, not like you're thinking. If the server supports the NodeManagement services in general, and the AddNodes service in particular, all that a Client would need to do is call the AddNodes service and...
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Kevin Herron

UaException: status=Bad_SessionClosed, message=The session was closed by the client

Something happened when I used Milo,I do not know why it happened: UaException: status=Bad_SessionClosed, message=The session was closed by the client. at org.eclipse.milo.opcua.sdk.client.session...
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无人岛旅行

java

opc-ua

opc

milo

Votes: 0

Answers: 1

Latest Answer

It looks like you’re trying to get the Session but nothing has called SessionFsm::openSession. You’ll have to share some code, because this is normally done by the SDK if you are using OpcUaClient. Di...
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Kevin Herron

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