Thies CLIMA WSC11
Compact weather station for wind, temperature, humidity, pressure, radiation, brightness and precipitation.
The Thies CLIMA WSC11 is a compact weather station that measures wind, air temperature, humidity, air pressure, global radiation, brightness and precipitation on building roofs and greenhouses. This Modbus RTU template reads all measured values, the sun position and GPS time, and lets you write the slave address, baud rate, station height and other station settings from ModbusCloud.
- Protocol
- Modbus RTU
- Connection
- RS485, 9600 baud
- Registers
- 83, read and write
- Brand
- Thies CLIMA
- Key readings
- Wind speed and direction · Air temperature · Relative humidity · Air pressure · Global radiation · Brightness north, east, south and west · Precipitation · Sun position and GPS time
- Available commands
- Slave address and baud rate · Station height · North correction · Wind averaging interval · Time zone · Precipitation sensor sensitivity
- Compatible models
- WSC11 4.9056.10.001 · WSC11 4.9056.11.001 · WSC11 4.9056.10.701 · WSC11 4.9056.10.801 · Priva WSC11 (3779240)
- Last updated
Registers (83)
83 read, 20 write
| Name | Unit | Access | Address (Hidden until you enter your email) | Function (hidden) | Type (hidden) |
|---|---|---|---|---|---|
| Wind Speed | m/s | Read | |||
| Mean Wind Speed | m/s | Read | |||
| Wind Direction | ° | Read | |||
| Mean Wind Direction | ° | Read | |||
| Air Temperature | °C | Read | |||
| Housing Interior Temperature | °C | Read | |||
| Relative Humidity | %RH | Read | |||
| Absolute Humidity | g/m³ | Read | |||
| Dew Point Temperature | °C | Read | |||
| Absolute Air Pressure | hPa | Read | |||
| Relative Air Pressure | hPa | Read | |||
| Global Radiation | W/m² | Read | |||
| Brightness North | Read | ||||
| Brightness East | Read | ||||
| Brightness South | Read | ||||
| Brightness West | Read | ||||
| Twilight | lux | Read | |||
| Precipitation Status | Read | ||||
| Weather Condition | Read | ||||
| Precipitation Intensity Level | Read | ||||
| Sensor Status | Read | ||||
| Date | Read | ||||
| Time | Read | ||||
| Time Format | h | Read | |||
| Longitude | ° | Read | |||
| Latitude | ° | Read | |||
| Sun Position Elevation | ° | Read | |||
| Sun Position Azimuth | ° | Read | |||
| Height Above Sea Level | m | Read | |||
| Operating Time | s | Read | |||
| Mean GPS Height Above MSL | m | Read | |||
| Wind Speed (Block) | m/s | Read | |||
| Mean Wind Speed (Block) | m/s | Read | |||
| Wind Direction (Block) | ° | Read | |||
| Mean Wind Direction (Block) | ° | Read | |||
| Air Temperature (Block) | °C | Read | |||
| Housing Interior Temperature (Block) | °C | Read | |||
| Dew Point Temperature (Block) | °C | Read | |||
| Relative Humidity (Block) | %RH | Read | |||
| Absolute Humidity (Block) | g/m³ | Read | |||
| Absolute Air Pressure (Block) | hPa | Read | |||
| Relative Air Pressure (Block) | hPa | Read | |||
| Global Radiation (Block) | W/m² | Read | |||
| Brightness North (Block) | Read | ||||
| Brightness East (Block) | Read | ||||
| Brightness South (Block) | Read | ||||
| Brightness West (Block) | Read | ||||
| Twilight (Block) | lux | Read | |||
| Precipitation Status (Block) | Read | ||||
| Date (Block) | Read | ||||
| Time (Block) | Read | ||||
| Time Format (Block) | h | Read | |||
| Longitude (Block) | ° | Read | |||
| Latitude (Block) | ° | Read | |||
| Sun Position Elevation (Block) | ° | Read | |||
| Sun Position Azimuth (Block) | ° | Read | |||
| Height Above Sea Level (Block) | m | Read | |||
| Sensor Status (Block) | Read | ||||
| Operating Time (Block) | s | Read | |||
| Mean GPS Height Above MSL (Block) | m | Read | |||
| Weather Condition (Block) | Read | ||||
| Precipitation Intensity Level (Block) | Read | ||||
| Slave Address | Read and write | ||||
| Baud Rate | Read and write | ||||
| Frame Format | Read and write | ||||
| Command Interpreter | Read and write | ||||
| Password | Read and write | ||||
| Wind Averaging Interval | min | Read and write | |||
| Wind Direction North Correction | ° | Read and write | |||
| Station Height | m | Read and write | |||
| Time Zone | Read and write | ||||
| Twilight Calculation Mode | Read and write | ||||
| Condensation Protection Heating Power | % | Read and write | |||
| Precipitation Sensor Sensitivity | ppm | Read and write | |||
| Snow Detection Parameters | Read and write | ||||
| Frost Detection Parameters | Read and write | ||||
| Ice Detection Parameters | Read and write | ||||
| Ice Detection Parameters 2 | Read and write | ||||
| Rain History Reset | Read and write | ||||
| LED Control | Read and write | ||||
| Quick-Start Mode | Read and write | ||||
| Reset | Read and write | ||||
| Software Version | Read |
Loading registers…
Send your device list
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 wind speed, outside temperature, humidity and global radiation from the greenhouse roof on one ModbusCloud dashboard.
- Get an email alarm when the wind speed exceeds your limit, so you can check that screens and vents have closed.
- Get an alarm as soon as the station reports precipitation, for example to check roof vents or sun shading.
- Compare brightness north, east, south and west over 365 days of history to tune shading per facade.
- Use the sensor status in the history to see when a sensor reported invalid values or the GPS signal was lost.
- Correct the station height or north alignment from the portal without climbing onto the roof.
Installation
Mount the WSC11 level on a mast with the plug underneath, at an open spot without shadow or wind lee, and turn the N marking to geographic north.
Connect DATA+ (pin 3) to RS485 A and DATA- (pin 4) to RS485 B of the ModbusCloud Gateway. Connect DATA_GND (pin 2) to the bus ground, never to the supply ground, and terminate the bus ends.
Supply the station with 18 to 30 V DC or 18 to 28 V AC. On long cables, check that the voltage drop still leaves enough supply voltage at the station.
In ModbusCloud, add a Modbus device with slave address 1, 9600 baud, 8 data bits, no parity and 1 stop bit, and import this template. A station supplied by Priva needs 115200 baud.
Give the station about three minutes for its first GPS data, then check that wind speed, air temperature and the date arrive in ModbusCloud.
Things to watch for
The weather station does not answer. What should I check?
Check address and speed first. Modbus variants ship with address 1 at 9600 baud 8N1, variant 4.9056.10.701 with address 10, and 4.9056.10.801 with address 30 at 19200 baud. A WSC11 supplied by Priva for a greenhouse climate computer is set to 115200 baud. Then swap DATA+ and DATA-, and make sure DATA_GND is not connected to the supply ground. An ASCII variant (.000) only answers Modbus after switching its command interpreter.
My own Modbus tool shows nonsense values. Why?
Every value takes two registers, starting at the number shown in the table, for example 30001 and 30002 for wind speed, high word first. A tool that subtracts one from that number reads across two values and shows nonsense. Frost, ice, snow and precipitation intensity only exist on the 4.9056.11 variants; other variants answer those addresses with an error.
Why does the station ignore a setting I write?
Most settings are protected. Write 234 to Password first and then the setting within two minutes. Settings go to permanent memory that wears out after about 100,000 writes, so never write them from a recurring automation. A new slave address applies at once, so update the Modbus device in ModbusCloud right away. Writing 0 to Command Interpreter switches the station to ASCII and it stops answering Modbus.
Why is the relative air pressure equal to the absolute pressure?
Relative pressure is calculated from the station height, and the default height is 0 m. Write the height of the station in metres to Station Height, or 3001 to use the GPS height. For 0.1 hPa accuracy the height must be known to within 0.8 m, and the GPS height can be off by up to 30 m.
Why does the wind direction show 0 or 360 degrees?
Without wind the direction cannot be determined and the station reports 0. Wind from the north is shown as 360. The mean values use the averaging interval, 10 minutes by default; set it to 0 for instantaneous values. If every direction is off by the same angle, realign the N marking or set the north correction.
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