Lufft Weather Stations


The purpose of this plugin is to collect data from Lufft weather stations.


This plugin reads the data from Lufft weather stations, via Modbus serial or TCP. Data will be collected to the weather table. By default, it will collect data every 5 minutes, but can collect at a minimum rate of 1 second, depending on the speed of the serial connection. The plugin will make 1 attempt (by default) to read the data. The plugin will collect from the following types of weather stations WS100, WS2100, WS300, WS400, WS500, WS600, WS700, and WS800. But be aware, not all variables may be collected. Please use discover to check the data before implementing collection to the cloud.

Variable Name           Units
Ambient Humidity        %
Ambient Humidity Min    %
Ambient Humidity Max    %
Ambient Humidity Avg    %
Ambient Temperature     °C
Ambient Temperature Min °C
Ambient Temperature Max °C
Ambient Temperature Avg °C
Dew Point               °C
Dew Point Min           °C
Dew Point Max           °C
Dew Point Avg           °C
Wind Chill Temp         °C
Barometer               hPa
Barometer Min           hPa
Barometer Max           hPa
Barometer Avg           hPa
Wet Bulb Temp           °C
Specific Enthalpy       kJ/kg
Air Density             kg/m³
Wind Speed              m/s
Wind Speed Min          m/s
Wind Speed Max          m/s
Wind Speed Avg          m/s
Wind Direction          °
Wind Direction Min      °
Wind Direction Max      °
Solar Radiation         W/m^2
Solar Radiation Min     W/m^2
Solar Radiation Max     W/m^2
Solar Radiation Avg     W/m^2
Wind Measurment Quality %
Precipitation Intensity mm/h
Precipitation Type


Arguments are as follows:

  • endpoint. This is either a serial device like /dev/ttyS0 or an IP or DNS like

  • bus_addresses. A Modbus address in the range 2-255. This can be a hyphenated list like 3-10 or a list like 2,5,7,9

  • --port. This is an optional parameter used in an Ethernet gateway, and is the TCP port used for the gateway. Default is 502

  • --attempts. This is an optional parameter, and determines how many times to times to attempt to read an inverter value. Default is 1

  • --delay. This is the delay in seconds between inverter send and receive commands, AND if attempts > 1. Fractions like 0.3 can be used. Default is 0.05

  • --stop_on_any_command_fail. If this is specified, then any Modbus commands that fail will stop all further queries for all bus addresses and attempts.

  • --serial_lock. If this is set, the program can only be run one at a time (so as not to overload a Modbus device). If the device being queried is a serial device, this will automatically be set to "on". For IP addresses it is optional.

  • --sampling_rate. If this is defined, and the sampling rate is greater than 1, then all DECIMAL and SWAP16 values will be collected as an average. In other words; it will take a sample at the nominated frequency. After X samples defined by sampling_rate, a record will be written and sent to the cloud.

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