DSMR MQTT

MQTT client for Belgian and Dutch Smart Meter (DSMR) - "Slimme Meter". Written in Python 3.x

Connect Smart Meter via a P1 USB cable to e.g. Raspberry Pi.

Application will continuously read DSMR meter and parse telegrams. Parsed telegrams are send to MQTT broker.

Includes Home Assistant MQTT Auto Discovery.

In dsmr50.py, specify:

• Which messages to be parsed
• MQTT topics and tags
• Auto discovery for Home Assistant

A typical MQTT message broadcast looks like:

{
"V1":226.0,
"V2":232.0,
"V3":229.0,
"database":"dsmr",
"el_consumed":24488767.0,
"el_returned":21190375.0,
"p_consumed":1130.0,
"p_generated":0.0,
"serial":"33363137",
"timestamp":1642275125
}

A virtual DSMR parameter is implemented (el_consumed and el_returned, which is sum of tarif1 and tarif2 (night/low en day/normal tariff)) - as some have a dual tarif meter, while energy company administratively considers this as a mono tarif meter.

Requirements

Install following python3 libraries

• paho-mqtt
• pyserial
• persist-queue

Test the P1 adapter & USB connection:

Test if P1 adapter is functional and is providing dsmr data by running in a bash shell:

• tail -f /dev/ttyUSB0
• optionally first execute sudo chmod o+rw /dev/ttyUSB0
• Results should be similar to:

  tail -f /dev/ttyUSB0
  
  /Ene5\T210-D ESMR5.0
  
  1-3:0.2.8(50)
  0-0:1.0.0(240204171638W)
  0-0:96.1.1(xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx)
  1-0:1.8.1(024790.294*kWh)
  1-0:1.8.2(011140.310*kWh)
  1-0:2.8.1(010474.138*kWh)
  1-0:2.8.2(025578.620*kWh)
  .....
  .....
  

Installation & Configuration

• Install Python3 packages per recommendation for your distro

• Install from github and configure:

  • mkdir & cd to your install location
  • git clone https://github.com/hansij66/dsmr2mqtt.git
  • cd dsmr2mqtt/

• In systemd/dsmr-mqtt.service:

  • Adapt ExecStart under [Service] to ExecStart=//dsmr-mqtt.py (default: /opt/iot/dsmr)

• sudo cp -p systemd/dsmr-mqtt.service /etc/systemd/system

• Copy config.rename.py to config.py and adapt for your configuration (minimal: mqtt ip, username, password)

  • Edit the MQTT configuration and know that the MQTT_TOPIC_PREFIX = "dsmr" will show these messages as topic dsmr/. Configuration will be shown as homeassistant/sensor/dsmr/

• sudo systemctl enable dsmr-mqtt

• sudo systemctl start dsmr-mqtt

• And check if it is running properly

  • sudo systemctl status dsmr-mqtt

    user@server:/opt/dsmr2mqtt $ sudo systemctl status dsmr-mqtt
    dsmr-mqtt.service - P1 dsmr smartmeter
     Loaded: loaded (/etc/systemd/system/dsmr-mqtt.service; enabled; vendor preset: enabled)
     Active: active (running) since Tue 2023-09-26 22:21:06 CEST; 18h ago
     Main PID: 1026 (dsmr-mqtt.py)
      Tasks: 6 (limit: 1595)
        CPU: 56.349s
     CGroup: /system.slice/dsmr-mqtt.service
             └─1026 /usr/bin/python3 /opt/dsmr2mqtt/dsmr-mqtt.py
             ```

Use

• http://mqtt-explorer.com/ to test & inspect MQTT messages

A test/dsmr.raw simulation file is provided. Set PRODUCTION = False in config.py to use the simulation file. No P1/serial connection is required.

Tested under Debian/Raspbian. Tested with DSMR v5.0 meter in Netherlands and Belgium. For other DSMR versions, dsmr50.py needs to be adapted. For all SMR specs, see netbeheer For Belgium/Fluvius, open your P1 port through Fluvius portal:

For encrypted P1/dsmr, there is a fork available.

Licence

GPL v3

Versions

4.0.2

• Adapt systemd for python venv

4.0.1

• Fix for Home Assistant auto discovery (by JoniR)

4.0.0

• Simplified design
• Patches from javl
• Some Patches from smartathome

3.0.0

• Change HA Auto Discovery. Solve warning: Discovered entities with a name that starts with the device name This stops working in version 2024.2.0. Please address before upgrading. Credits: ricko1

2.0.0 - 2.0.1

• Updated mqtt library
• Removed need for INFLUXDB label
• Added telegraf-dsmr.conf
• Added example (dsmr50_Stromnetz_Graz_Austria.py) for Austria dsmr (Stromnetz Graz, by karlkashofer)

1.0.13

• Add zero/non-zero check on data (as sometimes eg gas and power consumed values in influxdb became zero)

1.0.12

• Fix exit code (SUCCESS vs FAILURE)

1.0.2 - 1.0.4:

• Potential bug fix in parser
• Add MQTT last will/testament

1.0.0:

• Initial release