Connecting my heatpump 'iDM Terra ML Complete HGL' to OpenHAB 2 using MODBUS via node-red

For some time now I have been using OpenHAB at home for the central control of my house. In OpenHAB, for example, I manage shading, control some lamps, measure and visualize the energy consumption of certain consumers such as refrigerators or washing machines. The biggest consumer in the house I have not connected yet, my heating. This is a Terra ML Complete HGL heat pump from iDM. A little research on theire website has shown that the key figures of the machine can be read out via TCP (i. e. Ethernet) via the MODBUS protocol. ...

2017-12-15 ยท Tom Beyer