Hi,
I am quite new. My system worked. Since a power outage of some hours my network went down. After everything was up again I have a new problem: My Victron Cerbo does not answer to Modbus anymore.
A portscan shows that port 502 is open. But a modbus-Scan shows no answers on the service-ids. In the cerbo modbus is enabled and the shows his own service ids, p. ex. id 40 for the grid.
After the scan the cerbo shows inside of Settings > Integrations > Modbus TCP Server the error "Error processing function code 4, unit id 253… Modbus address 0 is not registered. What is correct, since there is nothing on that id. And this shows: The modbus tcp-server is enabled and listens and also is reachable.
BUT he does not answer for the avaiable ids…
I need to use this for my Home Assistant Integration and for my Wallbox (OpenWB) Integration.
And as I said: It already worked… :-/
Last point to that: while searching for my problem I also updated to firmware v3.62… but this did not help.
Anyone any idea?! I have no single clue how to proceed…
Thank you in advance,
Patrick
