Hannesvz

Fixed this by changing "state_class" value to "total" (as shown bellow). It was and issue related to this. https://github.com/home-assistant/core/issues/112723

You can also just run homeassistant and nodered in a docker container.

Strangely enough only the bms485 worked but not the rs485. Probably a different pinout.

This dit work after all btw.

The thing that fixed the inverter not speaking back to me was the modbus sn was set to 0, when I set it to 01 it fixed the issue immediately. For curiosity I tried to put it back to 0 and was unable to do so. @kellerza you should add to your github that people should remember to set the modbus sn to 01 < . Thanks for helping me everyone.

Are you saying that it is not sending the correct data to the inverter. And how would I get this slave/client id. And are you revering to the unit id. This did not work for me.

I seems to be sending data correctly but it still just connects and timeouts I have put the timeout delay to over an hour to see if it would fix it but it still has not. On the adapter the TX led flashes but the RX led does nothing. Is it possible that the adapter is wired incorrectly. I have tried multiple suggestions in the forums but none have worked.

I changed my docker-compose file to this. services: nodered: container_name: nodered image: nodered/node-red:latest user: root:root restart: always environment: - TZ=Africa/Johannesburg devices: - /dev/ttyUSB0:/dev/ttyUSB0 ports: - 1880:1880 volumes: - /home/hannes/Docker/appdata/nodered/data:/data Now it just connects and timeouts all the time.

I see now what I think I did wrong, but I don't know how to fix it can you help me. Add /dev/ttyUSB0 to this line. docker run -it -p 1880:1880 -v /home/hannes/Docker/appdata/nodered:/data --name mynodered nodered/node-red

I am struggling to communicate with the modbus and I don't know how to troubleshoot the problem. I am running home assistant in docker container with mqtt, influxdb and grafana on ubuntu server. I connected my rs485-USB adapter( USB to RS485 - 3 Pin - Micro Robotics ) A - 2 & 7 and B - 1 & 8. In the inverter I connect the cable to the BMS 485 port, but I have also tried connecting it to the RS 485 port with no luck. The cable is 10 m long from the garage to the server. The error I keep getting in node red looks like this. I also get this error every time I deploy. It is also worth to note that I took the flow from @jacauc 's github. If someone can help me it would be very appreciated.