I have been struggling for days with the connection of our district heating transfer station using Modbus.
With QModMaster I can successfully read data from it, but with modbus from Homeassistant it doesn’t work.
I’m using a Waveshare Modus TCP to RTU converter
It’s an Aqotec RM360 controller
I need the Heat consumption, it should be Modbus addr 43750, float according to the Vendor documentation
With QModMaster from my PC I can successfully read the needed data
Error Message from home-assistant.log:
DEBUG (SyncWorker_6) [homeassistant.components.modbus.modbus] Pymodbus: fernw: Modbus Error: [Input/Output] No Response received from the remote unit/Unable to decode response
Hei guys contact me pls I am in contact with the supplier. I got an extended List (excel) and integrated it into home assistant since 6 months +. You need an Ethernet cable in the station - i can send some pictures private. Also you need to enable DHCP and Modbus in the station (i got the service code). Where are you living?
just in case someone is trying the same: I just managed to connect Aqotec RM360 to HomeAssistant via serial modbus RTU using the COM A interface.
Initially the device address was set to something above 2000, thus it can’t be larger then 255. After setting a new value I was able to get and write data to registers.
Hi @Sweti3
Do i need to buy anything to connect via eternet cable (an adaptor or something)?
My router is next to heating system to i can fairly easy bring ethernet to rm360.
How do i get the service code?
Hi @JFSolution
Did you manage to get this integerated into Home Assistant via ESP Home?
can you shareb me some refernce to modbus RTU to buy?
Best Regards
Brijesh