Landis+Gyr E450 Encrypted smart meter data (STW Klagenfurt) #21359
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@gemu2015 as i saw a lot of request from your side in this bug #8790 Do you have an idea? |
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The Mbus interface has now also been activated on our E450 from STW/Energie Klagenfurt. I don't have a hardware adapter yet and am looking for the right components to work with the Tasmota Smart Meter feature. Can you share your source of supply, interconnection and configuration of the components here? |
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Did you have a look to Tasmota SML decoder ? |
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@fkroepfl New Version ESP32 with STW-Klagenfurt patch uploded. Read Liesmich-zuerst.txt to build with new files for own builds . HofeBY |
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Hi all, i got my smart meter a few days ago and already requested the "Kundenschnittstelle" from STW Klagenfurt.
The interface is now activated and the wired M-Bus interface running using M-BUS SLAVE CLICK and NODEMCU ESP32.
I compiled the firmware and applied it on the device and tried to setup everything to get data out.
Based on the description of STW the data (EN 13757-1: 2005 dlms/COSEM) should be encrypted (i have the key and decryption works, at least i have a output in the debug log)
I'm using following script to retrieve data, but the data is not correct. I get values but those are somehow not correct.
Tasmota script:
Output of sensor53 d1
14:25:42.236 SML: decrypted block: 355 bytes
I can find all available OBIS codes in the output (like 1.7.0, 1.8.0...) at the beginning (by converting from hex to DEC) but the data, most likely in the last 2 lines doesn't make sense. All other hex values above stays the same compared to the day before.
I was assuming 06 is the delimiter in the last 2 lines. But looks like this is not correct.
Any idea how to configure the filters in a correct way?
Thx Andi
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