Nibe Modbus 40

Anders_E · February 20, 2018, 12:19pm

Hi, I have a Nibe Heatpump and it is connected to my PC using a Modbus 40 addon. Has anyone modified the Nibe plugin so that it can talk to the Modbus 40 instead of some arduino or Pi?

Thanks for any help!
/Anders

rlkoshak · February 20, 2018, 3:11pm

I don’t know if it is relevant, but there is a Modbus binding. Maybe that will work.

Anders_E · February 20, 2018, 7:59pm

Ill see what Ill do. I wrote a plugin for Homeseer to communicate with the heatpump. Perhaps Ill try to port that and perhaps using the Modbus binding. Im totally new to OpenHAB. Homeseer works ok up to 25%, over that it sucks. User interface wise it is below the surface. Im hoping a lot for OpenHAB.

fiurdk · March 11, 2018, 10:19pm

Hey Anders

Thinking about the same, i also have a Nibe Heat Pump with the Modbus 40 add on box. Over time i would like to use it with OpenHab in order to to make control and interface by myself. However i have had problems with not getting modbus responses from the box yet. How far have you come in your research and project?

Anders_E · March 12, 2018, 7:24pm

Mine is running from just C#. And in Homeseer as a plugin. Not all commands implemented.

CJF · July 5, 2018, 10:18am

Hi there, I am using Matlab to control my NIBE heat pump via Modbus 40, works perfectly fine, changing setpoints or degree minutes. Planning to use Octave (freeware), similar to Matlab, as next.