simple meter read (SML)

This tool help you to read SML based meters.

features

• config SML search properties
• config OBIS value index
• run reader as service (linux)
• CRC16 check
• Test

run

Find your serial port like S0 or ttyAMA0 and use it instead fo my example port ttyAMA0.

packages

This tool use for serial reading the pyserial package.

python -m pip install pyserial

For mqtt

pip install paho-mqtt

execution samples

example with console output

python read_meter_values.py --device /dev/ttyAMA0 --meter BZPlus3

example with mqtt

python read_meter_values.py --device /dev/ttyAMA0 --mqtt --url 172.0.0.1 --topic meter/grid/meter1/ --meter BZPlus3

Your service name has a differ port name as my ttyAMA0.

setup grid meter

Sagemcom Smarty BZ-Plu

Unter den Einstellungen muss das dSS-Protokollstandard auf dSS-r gesetzt werden. Dazu muss SML Einstellung auf dSS-r eingestellt werden.

system

To read the serial data without system breaks, it is better to stop the service serial-getty@[your serial port].service:

systemctl stop serial-getty@ttyAMA0.service

service

Copy the service to the system. (Optional) change the device name.

sudo cp grid-meter1.servic nano /etc/systemd/system/

Start the service.

systemctl start grid-meter1.service

test

Run a test with hex data file

read_meter_values.py --test --meter BZPlus3 --file sml_files/bz-pus-10.hex -l DEBUG 

existing meter configurations

• Sagemcom Smarty BZ-Plu
• eBZ DD3 DD3BZ06DTA SMZ1