Lufft WS-J series
All-in-one weather sensor for temperature, humidity, air pressure, wind, precipitation and global radiation.
The Lufft WS-J series are compact all-in-one weather sensors that measure, depending on the variant, air temperature, humidity, air pressure, wind, precipitation and global radiation on a mast, for example on a greenhouse roof. This Modbus RTU template reads all measured values with minimum, maximum and average and the sensor status, and lets you write averaging intervals, altitude, offsets and heater settings from ModbusCloud.
- Protocol
- Modbus RTU
- Connection
- RS485, 19200 baud
- Registers
- 384, read and write
- Brand
- Lufft
- Key readings
- Air temperature · Relative humidity · Air pressure · Global radiation · Wind speed and direction · Precipitation amount and intensity · Dew point · Sensor status
- Available commands
- Averaging intervals · Station altitude · Measurement offsets · Heater mode · Fan and power saving mode · Modbus address and baud rate
- Compatible models
- WS200-J · WS300-J · WS400-J · WS401-J · WS500-J · WS501-J · WS502-J · WS510-J · WS600-J · WS600-J-NA · WS601-J · WS700-J · WS700-J-NA · WS800-J · WS800-J-NA
- Last updated
Registers (384)
381 read, 28 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Air Temperature | °C | Read | |||
| Air Temperature Min | °C | Read | |||
| Air Temperature Max | °C | Read | |||
| Air Temperature Avg | °C | Read | |||
| Air Temperature Std Dev | °C | Read | |||
| Dew Point | °C | Read | |||
| Dew Point Min | °C | Read | |||
| Dew Point Max | °C | Read | |||
| Dew Point Avg | °C | Read | |||
| Dew Point Std Dev | °C | Read | |||
| Wet Bulb Temperature | °C | Read | |||
| Wet Bulb Temperature Min | °C | Read | |||
| Wet Bulb Temperature Max | °C | Read | |||
| Wet Bulb Temperature Avg | °C | Read | |||
| Wet Bulb Temperature Std Dev | °C | Read | |||
| Wind Chill Temperature | °C | Read | |||
| Wind Chill Temperature Min | °C | Read | |||
| Wind Chill Temperature Max | °C | Read | |||
| Wind Chill Temperature Avg | °C | Read | |||
| Wind Chill Temperature Std Dev | °C | Read | |||
| External Temperature | °C | Read | |||
| External Temperature Min | °C | Read | |||
| External Temperature Max | °C | Read | |||
| External Temperature Avg | °C | Read | |||
| External Temperature Std Dev | °C | Read | |||
| Relative Humidity | % | Read | |||
| Relative Humidity Min | % | Read | |||
| Relative Humidity Max | % | Read | |||
| Relative Humidity Avg | % | Read | |||
| Relative Humidity Std Dev | % | Read | |||
| Absolute Humidity | g/m³ | Read | |||
| Absolute Humidity Min | g/m³ | Read | |||
| Absolute Humidity Max | g/m³ | Read | |||
| Absolute Humidity Avg | g/m³ | Read | |||
| Absolute Humidity Std Dev | g/m³ | Read | |||
| Specific Enthalpy | Read | ||||
| Specific Enthalpy Min | Read | ||||
| Specific Enthalpy Max | Read | ||||
| Specific Enthalpy Avg | Read | ||||
| Specific Enthalpy Std Dev | Read | ||||
| Mixing Ratio | g/kg | Read | |||
| Mixing Ratio Min | g/kg | Read | |||
| Mixing Ratio Max | g/kg | Read | |||
| Mixing Ratio Avg | g/kg | Read | |||
| Mixing Ratio Std Dev | g/kg | Read | |||
| Absolute Air Pressure | hPa | Read | |||
| Absolute Air Pressure Min | hPa | Read | |||
| Absolute Air Pressure Max | hPa | Read | |||
| Absolute Air Pressure Avg | hPa | Read | |||
| Absolute Air Pressure Std Dev | hPa | Read | |||
| Relative Air Pressure | hPa | Read | |||
| Relative Air Pressure Min | hPa | Read | |||
| Relative Air Pressure Max | hPa | Read | |||
| Relative Air Pressure Avg | hPa | Read | |||
| Relative Air Pressure Std Dev | hPa | Read | |||
| Air Density | Read | ||||
| Air Density Min | Read | ||||
| Air Density Max | Read | ||||
| Air Density Avg | Read | ||||
| Air Density Std Dev | Read | ||||
| Global Radiation | W/m² | Read | |||
| Global Radiation Min | W/m² | Read | |||
| Global Radiation Max | W/m² | Read | |||
| Global Radiation Avg | W/m² | Read | |||
| Global Radiation Std Dev | W/m² | Read | |||
| Wind Speed | m/s | Read | |||
| Wind Speed Fast | m/s | Read | |||
| Wind Speed Min | m/s | Read | |||
| Wind Speed Max | m/s | Read | |||
| Wind Speed Avg | m/s | Read | |||
| Wind Speed Vector Avg | m/s | Read | |||
| Wind Speed Std Dev | m/s | Read | |||
| Wind Gust | m/s | Read | |||
| Wind Quality | % | Read | |||
| Wind Quality Fast | % | Read | |||
| Wind Quality Avg | % | Read | |||
| Wind Direction | ° | Read | |||
| Wind Direction Fast | ° | Read | |||
| Wind Direction Min | ° | Read | |||
| Wind Direction Max | ° | Read | |||
| Wind Direction Vector Avg | ° | Read | |||
| Wind Direction Std Dev | ° | Read | |||
| Wind Gust Direction | ° | Read | |||
| Compass Heading | ° | Read | |||
| Wind Gust Corrected Direction | ° | Read | |||
| Wind Corrected Direction | ° | Read | |||
| Wind Corrected Direction Fast | ° | Read | |||
| Wind Corrected Direction Min | ° | Read | |||
| Wind Corrected Direction Max | ° | Read | |||
| Wind Corrected Direction Vector Avg | ° | Read | |||
| Precipitation Absolute | mm | Read | |||
| Precipitation Difference | mm | Read | |||
| Precipitation Intensity | mm/h | Read | |||
| Precipitation Type | Read | ||||
| Precipitation WMO wawa Code | Read | ||||
| Lightning Events | Read | ||||
| Lightning Events Sum | Read | ||||
| Air Temperature °F | °F | Read | |||
| Air Temperature Min °F | °F | Read | |||
| Air Temperature Max °F | °F | Read | |||
| Air Temperature Avg °F | °F | Read | |||
| Air Temperature Std Dev °F | °F | Read | |||
| Dew Point °F | °F | Read | |||
| Dew Point Min °F | °F | Read | |||
| Dew Point Max °F | °F | Read | |||
| Dew Point Avg °F | °F | Read | |||
| Dew Point Std Dev °F | °F | Read | |||
| Wet Bulb Temperature °F | °F | Read | |||
| Wet Bulb Temperature Min °F | °F | Read | |||
| Wet Bulb Temperature Max °F | °F | Read | |||
| Wet Bulb Temperature Avg °F | °F | Read | |||
| Wet Bulb Temperature Std Dev °F | °F | Read | |||
| Wind Chill Temperature °F | °F | Read | |||
| Wind Chill Temperature Min °F | °F | Read | |||
| Wind Chill Temperature Max °F | °F | Read | |||
| Wind Chill Temperature Avg °F | °F | Read | |||
| Wind Chill Temperature Std Dev °F | °F | Read | |||
| External Temperature °F | °F | Read | |||
| External Temperature Min °F | °F | Read | |||
| External Temperature Max °F | °F | Read | |||
| External Temperature Avg °F | °F | Read | |||
| External Temperature Std Dev °F | °F | Read | |||
| Wind Speed mph | Read | ||||
| Wind Speed Fast mph | Read | ||||
| Wind Speed Min mph | Read | ||||
| Wind Speed Max mph | Read | ||||
| Wind Speed Avg mph | Read | ||||
| Wind Speed Vector Avg mph | Read | ||||
| Wind Speed Std Dev mph | Read | ||||
| Wind Gust mph | Read | ||||
| Wind Speed km/h | km/h | Read | |||
| Wind Speed Fast km/h | km/h | Read | |||
| Wind Speed Min km/h | km/h | Read | |||
| Wind Speed Max km/h | km/h | Read | |||
| Wind Speed Avg km/h | km/h | Read | |||
| Wind Speed Vector Avg km/h | km/h | Read | |||
| Wind Speed Std Dev km/h | km/h | Read | |||
| Wind Gust km/h | km/h | Read | |||
| Wind Speed kts | Read | ||||
| Wind Speed Fast kts | Read | ||||
| Wind Speed Min kts | Read | ||||
| Wind Speed Max kts | Read | ||||
| Wind Speed Avg kts | Read | ||||
| Wind Speed Vector Avg kts | Read | ||||
| Wind Speed Std Dev kts | Read | ||||
| Wind Gust kts | Read | ||||
| Precipitation Absolute in | Read | ||||
| Precipitation Difference in | Read | ||||
| Precipitation Intensity in/h | Read | ||||
| Precipitation Absolute l/m² | Read | ||||
| Precipitation Difference l/m² | Read | ||||
| Precipitation Intensity l/m²/h | Read | ||||
| Precipitation Absolute mil | Read | ||||
| Precipitation Difference mil | Read | ||||
| Precipitation Intensity mil/h | Read | ||||
| Device Status | Read | ||||
| Init Status | Read | ||||
| Temperature Status | Read | ||||
| Humidity Status | Read | ||||
| Pressure Status | Read | ||||
| Compass Status | Read | ||||
| Wind Status | Read | ||||
| Precipitation Status | Read | ||||
| Radiation Status | Read | ||||
| Lightning Status | Read | ||||
| Heater Status | Read | ||||
| Fan Status | Read | ||||
| Reset Cause | Read | ||||
| Supply Voltage | V | Read | |||
| Heater Voltage | V | Read | |||
| Boot Count | Read | ||||
| Attended Time | h | Read | |||
| Fan Speed | rpm | Read | |||
| Wind Heater On | Read | ||||
| R2S Heater On | Read | ||||
| Wind Heater Temperature | °C | Read | |||
| R2S Heater Temperature | °C | Read | |||
| Air Temperature (Metric Set) | °C | Read | |||
| Relative Humidity (Metric Set) | % | Read | |||
| Relative Air Pressure (Metric Set) | hPa | Read | |||
| Global Radiation (Metric Set) | W/m² | Read | |||
| Wind Gust (Metric Set) | m/s | Read | |||
| Wind Speed Vector Avg (Metric Set) | m/s | Read | |||
| Wind Direction Vector Avg (Metric Set) | ° | Read | |||
| Precipitation WMO wawa Code (Metric Set) | Read | ||||
| Precipitation Intensity (Metric Set) | mm/h | Read | |||
| Dew Point (Metric Set) | °C | Read | |||
| Wet Bulb Temperature (Metric Set) | °C | Read | |||
| Wind Chill Temperature (Metric Set) | °C | Read | |||
| External Temperature (Metric Set) | °C | Read | |||
| Absolute Humidity (Metric Set) | g/m³ | Read | |||
| Mixing Ratio (Metric Set) | g/kg | Read | |||
| Specific Enthalpy (Metric Set) | Read | ||||
| Absolute Air Pressure (Metric Set) | hPa | Read | |||
| Air Density (Metric Set) | Read | ||||
| Wind Speed Avg (Metric Set) | m/s | Read | |||
| Wind Speed (Metric Set) | m/s | Read | |||
| Wind Direction (Metric Set) | ° | Read | |||
| Wind Speed Fast (Metric Set) | m/s | Read | |||
| Wind Direction Fast (Metric Set) | ° | Read | |||
| Wind Quality Avg (Metric Set) | % | Read | |||
| Wind Quality (Metric Set) | % | Read | |||
| Wind Quality Fast (Metric Set) | % | Read | |||
| Precipitation Difference (Metric Set) | mm | Read | |||
| Precipitation Absolute (Metric Set) | mm | Read | |||
| Compass Heading (Metric Set) | ° | Read | |||
| Lightning Events (Metric Set) | Read | ||||
| Device Status (Metric Set) | Read | ||||
| Air Temperature (Imperial Set) | °F | Read | |||
| Relative Humidity (Imperial Set) | % | Read | |||
| Relative Air Pressure (Imperial Set) | hPa | Read | |||
| Global Radiation (Imperial Set) | W/m² | Read | |||
| Wind Gust (Imperial Set) | Read | ||||
| Wind Speed Vector Avg (Imperial Set) | Read | ||||
| Wind Direction Vector Avg (Imperial Set) | ° | Read | |||
| Precipitation WMO wawa Code (Imperial Set) | Read | ||||
| Precipitation Intensity (Imperial Set) | Read | ||||
| Dew Point (Imperial Set) | °F | Read | |||
| Wet Bulb Temperature (Imperial Set) | °F | Read | |||
| Wind Chill Temperature (Imperial Set) | °F | Read | |||
| External Temperature (Imperial Set) | °F | Read | |||
| Absolute Humidity (Imperial Set) | g/m³ | Read | |||
| Mixing Ratio (Imperial Set) | g/kg | Read | |||
| Specific Enthalpy (Imperial Set) | Read | ||||
| Absolute Air Pressure (Imperial Set) | hPa | Read | |||
| Air Density (Imperial Set) | Read | ||||
| Wind Speed Avg (Imperial Set) | Read | ||||
| Wind Speed (Imperial Set) | Read | ||||
| Wind Direction (Imperial Set) | ° | Read | |||
| Wind Speed Fast (Imperial Set) | Read | ||||
| Wind Direction Fast (Imperial Set) | ° | Read | |||
| Wind Quality Avg (Imperial Set) | % | Read | |||
| Wind Quality (Imperial Set) | % | Read | |||
| Wind Quality Fast (Imperial Set) | % | Read | |||
| Precipitation Difference (Imperial Set) | Read | ||||
| Precipitation Absolute (Imperial Set) | Read | ||||
| Compass Heading (Imperial Set) | ° | Read | |||
| Lightning Events (Imperial Set) | Read | ||||
| Device Status (Imperial Set) | Read | ||||
| Supply Voltage (Imperial Set) | V | Read | |||
| Heater Voltage (Imperial Set) | V | Read | |||
| Boot Count (Imperial Set) | Read | ||||
| Attended Time (Imperial Set) | h | Read | |||
| Fan Speed (Imperial Set) | rpm | Read | |||
| Wind Heater On (Imperial Set) | Read | ||||
| R2S Heater On (Imperial Set) | Read | ||||
| Wind Heater Temperature (Imperial Set) | °C | Read | |||
| R2S Heater Temperature (Imperial Set) | °C | Read | |||
| Identification | Read | ||||
| Device Status (16-bit) | Read | ||||
| Sensor Status 1 | Read | ||||
| Sensor Status 2 | Read | ||||
| Sensor Status 3 | Read | ||||
| Sensor Status 4 | Read | ||||
| Sensor Status 5 | Read | ||||
| Sensor Status 6 | Read | ||||
| Run Time | s | Read | |||
| Relative Humidity (16-bit) | % | Read | |||
| Relative Humidity Min (16-bit) | % | Read | |||
| Relative Humidity Max (16-bit) | % | Read | |||
| Relative Humidity Avg (16-bit) | % | Read | |||
| Relative Air Pressure (16-bit) | hPa | Read | |||
| Relative Air Pressure Min (16-bit) | hPa | Read | |||
| Relative Air Pressure Max (16-bit) | hPa | Read | |||
| Relative Air Pressure Avg (16-bit) | hPa | Read | |||
| Wind Direction (16-bit) | ° | Read | |||
| Wind Direction Min (16-bit) | ° | Read | |||
| Wind Direction Max (16-bit) | ° | Read | |||
| Wind Direction Vector Avg (16-bit) | ° | Read | |||
| Wind Direction Fast (16-bit) | ° | Read | |||
| Wind Corrected Direction (16-bit) | ° | Read | |||
| Compass Heading (16-bit) | ° | Read | |||
| Precipitation Type (16-bit) | Read | ||||
| Wind Measurement Quality (16-bit) | % | Read | |||
| Global Radiation (16-bit) | W/m² | Read | |||
| Global Radiation Min (16-bit) | W/m² | Read | |||
| Global Radiation Max (16-bit) | W/m² | Read | |||
| Global Radiation Avg (16-bit) | W/m² | Read | |||
| Air Temperature (16-bit) | °C | Read | |||
| Air Temperature Min (16-bit) | °C | Read | |||
| Air Temperature Max (16-bit) | °C | Read | |||
| Air Temperature Avg (16-bit) | °C | Read | |||
| Dew Point (16-bit) | °C | Read | |||
| Dew Point Min (16-bit) | °C | Read | |||
| Dew Point Max (16-bit) | °C | Read | |||
| Dew Point Avg (16-bit) | °C | Read | |||
| Wind Chill Temperature (16-bit) | °C | Read | |||
| Wind Heater Temperature (16-bit) | °C | Read | |||
| R2S Heater Temperature (16-bit) | °C | Read | |||
| Wind Speed (16-bit) | m/s | Read | |||
| Wind Speed Min (16-bit) | m/s | Read | |||
| Wind Speed Max (16-bit) | m/s | Read | |||
| Wind Speed Avg (16-bit) | m/s | Read | |||
| Wind Speed Vector Avg (16-bit) | m/s | Read | |||
| Wind Speed Fast (16-bit) | m/s | Read | |||
| Precipitation Absolute (16-bit) | mm | Read | |||
| Precipitation Difference (16-bit) | mm | Read | |||
| Precipitation Intensity (16-bit) | mm/h | Read | |||
| Air Temperature °F (16-bit) | °F | Read | |||
| Air Temperature °F Min (16-bit) | °F | Read | |||
| Air Temperature °F Max (16-bit) | °F | Read | |||
| Air Temperature °F Avg (16-bit) | °F | Read | |||
| Dew Point °F (16-bit) | °F | Read | |||
| Dew Point °F Min (16-bit) | °F | Read | |||
| Dew Point °F Max (16-bit) | °F | Read | |||
| Dew Point °F Avg (16-bit) | °F | Read | |||
| Wind Chill Temperature °F (16-bit) | °F | Read | |||
| Wind Heater Temperature °F (16-bit) | °F | Read | |||
| R2S Heater Temperature °F (16-bit) | °F | Read | |||
| Wind Speed mph (16-bit) | Read | ||||
| Wind Speed mph Min (16-bit) | Read | ||||
| Wind Speed mph Max (16-bit) | Read | ||||
| Wind Speed mph Avg (16-bit) | Read | ||||
| Wind Speed mph Vector Avg (16-bit) | Read | ||||
| Wind Speed Fast mph (16-bit) | Read | ||||
| Precipitation Absolute in (16-bit) | Read | ||||
| Precipitation Difference in (16-bit) | Read | ||||
| Precipitation Intensity in/h (16-bit) | Read | ||||
| Absolute Humidity (16-bit) | g/m³ | Read | |||
| Absolute Humidity Min (16-bit) | g/m³ | Read | |||
| Absolute Humidity Max (16-bit) | g/m³ | Read | |||
| Absolute Humidity Avg (16-bit) | g/m³ | Read | |||
| Mixing Ratio (16-bit) | g/kg | Read | |||
| Mixing Ratio Min (16-bit) | g/kg | Read | |||
| Mixing Ratio Max (16-bit) | g/kg | Read | |||
| Mixing Ratio Avg (16-bit) | g/kg | Read | |||
| Absolute Air Pressure (16-bit) | hPa | Read | |||
| Absolute Air Pressure Min (16-bit) | hPa | Read | |||
| Absolute Air Pressure Max (16-bit) | hPa | Read | |||
| Absolute Air Pressure Avg (16-bit) | hPa | Read | |||
| Wind Speed km/h (16-bit) | km/h | Read | |||
| Wind Speed km/h Min (16-bit) | km/h | Read | |||
| Wind Speed km/h Max (16-bit) | km/h | Read | |||
| Wind Speed km/h Avg (16-bit) | km/h | Read | |||
| Wind Speed km/h Vector Avg (16-bit) | km/h | Read | |||
| Wind Speed kts (16-bit) | Read | ||||
| Wind Speed kts Min (16-bit) | Read | ||||
| Wind Speed kts Max (16-bit) | Read | ||||
| Wind Speed kts Avg (16-bit) | Read | ||||
| Wind Speed kts Vector Avg (16-bit) | Read | ||||
| Wind Speed Fast km/h (16-bit) | km/h | Read | |||
| Wind Speed Fast kts (16-bit) | Read | ||||
| Wind Speed Std Dev (16-bit) | m/s | Read | |||
| Wind Speed Std Dev mph (16-bit) | Read | ||||
| Wind Direction Std Dev (16-bit) | ° | Read | |||
| Wet Bulb Temperature (16-bit) | °C | Read | |||
| Wet Bulb Temperature °F (16-bit) | °F | Read | |||
| Specific Enthalpy (16-bit) | Read | ||||
| Air Density (16-bit) | Read | ||||
| Precipitation Intensity mm/min (16-bit) | Read | ||||
| Precipitation Intensity in/min (16-bit) | Read | ||||
| External Temperature (16-bit) | °C | Read | |||
| External Temperature °F (16-bit) | °F | Read | |||
| Wind Value Quality Fast (16-bit) | % | Read | |||
| Lightning Events Minute (16-bit) | Read | ||||
| Lightning Events Interval (16-bit) | Read | ||||
| Software Reset | Write | ||||
| Device ID Reset | Write | ||||
| Reset Precipitation Amount | Write | ||||
| Device ID | Read and write | ||||
| Protocol | Read and write | ||||
| Baud Rate | Read and write | ||||
| Data Format | Read and write | ||||
| Location Altitude | m | Read and write | |||
| Operating Mode | Read and write | ||||
| Wind Heater Mode | Read and write | ||||
| R2S Heater Mode | Read and write | ||||
| Rain Gauge Resolution | Read and write | ||||
| Fan Mode | Read and write | ||||
| External Sensor | Read and write | ||||
| Temperature Averaging Interval | min | Read and write | |||
| Humidity Averaging Interval | min | Read and write | |||
| Pressure Averaging Interval | min | Read and write | |||
| Wind Averaging Interval | min | Read and write | |||
| Global Radiation Averaging Interval | min | Read and write | |||
| External Temperature Averaging Interval | min | Read and write | |||
| Lightning Event Interval | min | Read and write | |||
| Temperature User Offset | °C | Read and write | |||
| Humidity User Offset | % | Read and write | |||
| Pressure User Offset | hPa | Read and write | |||
| Wind Direction User Offset | ° | Read and write | |||
| Global Radiation User Offset | W/m² | Read and write | |||
| Compass Direction User Offset | ° | Read and write | |||
| External Temperature User Offset | °C | Read and write |
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If a device is not in the library yet, we build the template for free as soon as we have the register data.
Use cases
- Show outside temperature, humidity, global radiation and wind from the greenhouse roof on one ModbusCloud dashboard.
- Get an email alarm when the wind gust exceeds your limit, so you can check that vents and screens have closed.
- Get an alarm as soon as the precipitation intensity rises above zero, for example to check the roof vents.
- Compare global radiation and outside temperature over 365 days of history to review the growing season.
- Set an alarm on Device Status not equal to 0 to hear about a sensor, heater or fan fault right away.
- Correct the station altitude or a temperature offset from the portal without climbing onto the roof.
Installation
Mount the sensor on top of a mast at least 2 m above the ground with a free view, align the north marking for wind, and keep radiation sensors free of shadow.
Connect green (A) and yellow (B) to the RS485 port of the ModbusCloud Gateway and terminate the bus ends. Connect white and brown to a 4 to 28 V DC supply and red and blue to the heating supply, 24 V recommended.
Switch the protocol from UMB to Modbus RTU in ConfigTool.NET and note the device ID, which is also the Modbus address (1 by default).
In ModbusCloud, add a Modbus device with that address, 19200 baud, 8 data bits, even parity and 1 stop bit, and import this template.
Wait about 10 seconds after power-up, then check that air temperature and device status arrive. Write the local altitude so the relative air pressure is correct.
Things to watch for
The weather sensor does not answer. What should I check?
The sensor ships with the UMB protocol, not Modbus. Switch it to Modbus RTU in ConfigTool.NET first. The Modbus address equals the device ID, 1 by default. Use the transmission mode set there, 19200 baud 8E1 by default for Modbus, and try 8N1 if nothing answers. Then swap A and B. Never use device ID 200, which is reserved for the start-up of the sensor.
Why do some values show NaN or an error value?
Each variant has its own sensors. The WS300-J, WS400-J and WS401-J have no wind sensor, global radiation is only on the WS501-J, WS502-J, WS510-J, WS700-J and WS800-J, and lightning only on the WS800-J. Values the variant does not measure read as NaN or an error value, in the older 16-bit set 32767 or 65535. External temperature only appears when External Sensor is set. Right after power-up the sensor needs about 10 seconds.
Why does a setting I write not take effect?
The sensor applies new settings only after a reset. Write the setting, then write Software Reset. The sensor is then offline for a few seconds. A new Device ID, Protocol, Baud Rate or Data Format changes how the Gateway reaches the sensor, so update the Modbus device in ModbusCloud at the same time. Any Protocol value other than Modbus RTU ends the Modbus connection.
Why is the relative air pressure wrong?
Relative air pressure is calculated from the station altitude, 200 m by default. Write the altitude of the site in metres to Location Altitude and reset the sensor. For the compass-corrected wind direction, also set Compass Direction User Offset to the local magnetic declination.
Why is the temperature too high on sunny days?
The temperature and humidity unit needs its fan. With Fan Mode off, in power saving mode 1 or 2, or with a supply below 11 V the fan does not run, and sunshine can raise the temperature and lower the humidity readings. Keep Fan Mode on and supply the sensor with 12 V or more, 24 V recommended.
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