GitHub user helloworld121 edited a discussion: Subscribe OPC/UA Node
Hi there,
I’m working on an OPC UA subscription to a specific node. I already implemented
this using Eclipse Milo, but now I want to switch to Apache Camel and use
PLC4X. I’m struggling with the migration :(
The OPC UA server namespace is: ns=1;s=server1
Nodes:
Trigger node: server1.Trigger
Value node 1: server1.Value1
Value node 2: server1.Value2
The goal is: Subscribe to the trigger node and, whenever it changes, read the
values of server1.Value1 and server1.Value2.
Using Apache Camel, I created a route like this:
```
public class CamelPlc4xIntegrationTest {
public static void main(String[] args) throws Exception {
CamelContext context = new DefaultCamelContext();
context.addRoutes(new RouteBuilder() {
@Override
public void configure() {
String endpoint =
"plc4x:opcua:tcp://127.0.0.1:12686" +
"?discovery=false" +
"&period=1000" +
"&tags=myValue:ns=2;s=server1.Trigger";
from(endpoint)
.log("Raw Body: ${body}");
}
});
context.start();
Thread.sleep(60_000);
context.stop();
}
}
```
However, I’m not receiving any data from the endpoint even tho the trigger
changed. Now I am a little bit lost.
Could someone help me identify what I’m missing or doing wrong? Many thanks!
GitHub link: https://github.com/apache/plc4x/discussions/2253
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