Homematic1.x Add-on Connection Issues with CCU3

Hi everyone, I’m reaching out to see if anyone else has encountered and potentially resolved an issue I’m facing with the Homematic1.x add-on in OpenHAB. I recently switched to this add-on due to a critical bug in the default Homematic Binding included in OpenHAB 2.4.0. While the add-on seems promising, I’m running into a significant problem where it can’t establish a connection to my piVCCU3. The error logs indicate a ‘Read timed out’ issue, which I suspect is related to the transition from BinRPC to XMLRPC in the firmware update to version 3.41.11.

I followed the documentation’s advice to enable HM-IP support by setting homematicIP.enabled=true in the configuration. However, the issue persists, and the logs still reference BinRPC instead of XMLRPC. Upon reviewing the binding’s source code, I noticed that the setting doesn’t seem to be properly implemented, which makes me question the accuracy of the documentation.

I understand that the 1.x binding is no longer actively maintained, but I believe this issue might affect other OpenHAB1 users who haven’t migrated yet. If anyone has successfully navigated this problem or has insights into what might be causing it, I’d greatly appreciate your input. Let’s work together to find a solution!

Best regards,
[Your Name]