Landis + Gyr E110 Solar Meter

[Harry Phelps]

Does anyone know if I stand a chance of getting any data out of this model?

A client has asked about it, I have never even considered getting Loxone to interact with solar power before so I would just like to know if it is possible for now. Displaying usage in the app is what I have been asked for, does anyone have any experience of these devices?

[SteveJ]

Hi Harry

Not quite the same context, but exactly the same principle...

I have one of these L&G meters on my grid supply.   Before I got solar (and had to do something more elaborate to account for exported energy) I was using an optical pulse counter circuit similar to this:

https://learn.openenergymonitor.org/electricity-monitoring/pulse-counting/introduction-to-pulse-counting

to interface the meter to Loxone.  I stuck the optical sensor (ie opto transistor) over the flashing LED n the meter with a sticky pad.  The pulse output of the circuit was connected to a loxone digital input, which was then connected in Loxone config as the TR input on an energy meter block.  I found this very reliable, once i'd set the offset in loxone config to account for the meter reading at the point I connected it all up, the counter in Loxone stayed in step with the actual reading on the meter for a couple of years before I decommissioned it.

I would imagine you could do something similar to connect up an L&G meter being used as a solar generation meter.

As an alternative, I think some versions of these meters have an optical port that acts as  serial data connection.  In theory, with the right kind of optical probe and something like an arduino running the right code, you could have a serial conversation with the meter and periodically ask it for power and energy readings which you could then relay to Loxone over something like a UDP virtual input.

Hope that helps

Steve

[Harry Phelps]

Steve,

Apologies for my late reply, for some reason my mail client decided to stick the email from Google Groups in my junk folder!

That information is very helpful, thank you very much. It now remains to be seen if my client would like to go ahead and integrate with Loxone.