SML reader for power/energy meter LOGAREX LK13BE606739 via esphome

[RoSche (Rob)]

Hi, did somebody had the same problem and can help?
I got a new electricity meter installed a short while ago and try to read it thru the SML port.

• Manufacturer is Logarex
• Device is LK13BE606739

I could not find a manual for the meter but it seems that the data stream is binary and not in ASCII format.

I used the ESP Home SML functionality and tried different UART configs. The UART debug clearly shows that there are data being received, but is is largely 0x00.
Example:

[15:49:39][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:39][D][uart_debug:196]: <<< 0b00000000 (0x00)0b00000000 (0x00)
[15:49:40][D][uart_debug:196]: <<< 0b00000000 (0x00)0b00000000 (0x00)
[15:49:41][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:41][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:42][D][uart_debug:196]: <<< 0b00000000 (0x00)0b00000000 (0x00)
[15:49:43][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:43][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:43][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:44][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:44][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:45][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:45][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:46][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:46][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:47][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:48][D][uart_debug:196]: <<< 0b00000000 (0x00)0b00000000 (0x00)
[15:49:48][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:49][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:49][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:50][D][uart_debug:196]: <<< 0b00000000 (0x00)0b00000000 (0x00)
[15:49:50][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:51][D][uart_debug:196]: <<< 0b00000000 (0x00)
[15:49:51][D][uart_debug:196]: <<< 0b00000000 (0x00)

The data streams stops if I remove the IR reader from the port.

So it seems that my first problem is the UART configuration (?).
Second problem might be that the ESP Home SML needs a ASCII stream.

Did somebody run into the same problems with this particular meter or a comparable and could share a solution?

Many thanks!

PS: Reading the other information port that just gives power data (with a different ESP sensor) works just fine, but does not differentiate the direction of the energy flow.

[Megachip]

Support for Logarex

EDL21 adding Support for LOGAREX

Provided Values complete dataset: /LOG5LK13BE803039 1-0:96.1.0*255(001LOG0065553189) 1-0:1.8.0*255(001933.7428*kWh) 1-0:2.8.0*255(000000.0000*kWh) 1-0:16.7.0*255(001560*W) 1-0:32.7.0*255(233.5*V) 1-0:52.7.0*255(231.2*V) 1-0:72.7.0*255(232.4*V) 1-0:31.7.0*255(000.83*A) 1-0:51.7.0*255(005.86*A) 1-0:71.7.0*255(000.59*A) 1-0:81.7.1*255(242*deg) 1-0:81.7.2*255(124*deg) 1-0:81.7.4*255(032*deg) 1-0:81.7.15*255(014*deg) 1-0:81.7.26*255(053*deg) 1-0:14.7.0*255(49.9*Hz) 1-0:1.8.0*96(00016.0*kWh) 1-0:1.8.…

Reading data from a smart meter speaking D0

Hi, I wanted to share my solution for reading data from a smart meter speaking D0 / OBIS. I have a Hager meter approximately 10 years old, which doesn’t speak EDL21 / SML. I bought an infrared reader whith USB which is connected to the Raspberry Pi 4 running Home Assistant OS. The reader works perfectly as a Serial sensor: - platform: serial serial_port: /dev/ttyUSB0 baudrate: 9600 bytesize: 7 parity: E stopbits: 1 name: smartmeter_data The meter outputs its current state every se…

maybe some of them could help. Not exactly the same model, but I’ll guess it talks the same protocol.