Recent posts to OPC UA multiple Endpointshttps://forge.codesys.com/forge/talk/Engineering/thread/cb996a6864/2025-10-28T20:51:47.597000ZRecent posts to OPC UA multiple EndpointsOPC UA multiple Endpoints2025-10-28T20:51:47.597000Z2025-10-28T20:51:47.597000Zmaltehttps://forge.codesys.com/u/malte/https://forge.codesys.com5c3981def813f9d6caa46b4982201caea0055686<div class="markdown_content"><p>My CODESYS OPC UA server provides endpoints using both the hostname and the IP address.<br/>
Connecting via the IP address works fine, but connecting via the hostname does not.</p>
<p>The endpoint list shows both <code>opc.tcp://<hostname>:4840</code> and <code>opc.tcp://<ip>:4840</code>.<br/>
When using the hostname, the OPC UA client (UA Expert) fails to connect.<br/>
Using the IP address connects without issues.</p>
<p>Main goal is to conect via Python but opcua-asyncio seems to prefer the hostname.</p>
<p>How can I configure CODESYS or my system so that the OPC UA connection via hostname also works properly or disable it completly?</p>
<hr/>
<p>Running Codesys for PFC200 sl 4.18.0.0</p></div>