If you are a little techy, I would really suggest you to look at the FHEM forum. There is a thread where HW is sold which can be be put on top of a raspberry pi. You can run on that raspberry pi the ebusd daemon which would send data over mqtt to openhab, over mqtt you can even set values to the ebus devices. I am running it for the Wolf CWl 300 Excelence.
If there is need I can put my project online. The cost for the HW is about 100€ in total (45€ raspbery pi, 55€ the ebus extension)
place the right csv file in /etc/ebusd/encon ( I have a working one for cwl 300, other found arround)
configure /etc/default/ebusd, make sure connection to ESERA is set and mqtt enabled (e.g. EBUSD_OPTS="–pollinterval=1 --httpport 8085 --scanconfig --mqtthost=192.168.3.67 --mqttport=1883 --enablehex -d 192.168.3.35:5000 --loglevel=info")
I am able to read and set values on my CWL 300 excelent.
I tried more then once to move from ebusd setup to the native ebusd binding, without success. the support comunity for ebus, ebusd is big on the FHEM forum.
I someone decides to go my path I am will to actively support, but first thing get an ebus coupler.
Hello @lukics I am planning to have Wolf BWL-1S together with FGB-28 gas boiler. Can I use your setup with eBUS Koppler Ethernet and RPi to control output water temperature with OpenHab for ex. ?
Thank you in advance for you replay
Hello @lukics, I went the ebusd way with my CGW boiler but did not find the proper csv. The only thing I can read is the outside temperature and a few more. But there are still a lot of unknown parameters. Can you share your csv?