Reading boiler info through eBus - success!

[Andras]

I have been trying to get Loxone - Wolf boiler integration working for a while now. I have purchased an Esera USB-ebus interface which seemed to work fine but I had no luck getting info from the thing through ebusd. There seems to be a lot of understanding of bits and bytes required there.

A few days ago though, I managed to create the correct config files and data started flowing:

(labels are in Hungarian, but essentially I have managed to get all temperatures, modulation level, IO values, pressure, operating mode, burner mode, errors, etc)

The architecture is the following:

Wolf (CGW-2) boiler --- ebus ---> esera ebus adapter --- USB ---> [ raspberry pi --- ebusd ---> mosquitto --- mqtt ---> nodered ] --- Loxone API ---> Loxone

ebusd is able to read quite a lot of info and also can work in read-only mode:

 

The nodered part is pretty simple as well:

The Loxone end is a simple virtual input.

From the config files I have seen floating around, I would say it's possible to integrate Vaillant and Wolf systems but possibly other manufacturers (except for Bosch) as well.

[RSinn]

Have you seen anything for Atag? Have you got any links?

Looks really good!

[Andras]

A key component is ebusd: https://github.com/john30/ebusd/wiki

If you can make ebusd work, the rest is just wiring into Loxone. ATAG seems to be an OpenTherm based manufacturer so you might be better off going in an opentherm bridge direction.

[David Wallis]

if anyone is interested I have an opentherm interface I built for the old house which I will part with if of any use to anyone?

---

From: loxone-...@googlegroups.com <loxone-...@googlegroups.com> on behalf of RSinn <richard....@gmail.com>
Sent: Friday, May 3, 2019 8:42:49 AM
To: Loxone English
Subject: Reading boiler info through eBus - success!

 

Have you seen anything for Atag? Have you got any links?

Looks really good!

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