Operating Manual WS200 UMB WS300 WS301 WS400 WS500 WS501 WS600 WSx V35 En

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48.7230-WSX-E
Document version V35 (05/2017)

Operating Manual

Smart Weather Sensor

Contents
1

Please Read Before Use .............................................................................................................................................5
1.1
1.2
1.3
1.4
1.5
1.6

Symbols Used .....................................................................................................................................................5
Safety Instructions ...............................................................................................................................................5
Designated Use ...................................................................................................................................................5
Incorrect Use .......................................................................................................................................................5
Warranty ..............................................................................................................................................................5
Brand Names.......................................................................................................................................................5

Scope of Delivery ........................................................................................................................................................6

Order Numbers ............................................................................................................................................................7
3.1
3.2
3.3

Equipment Description .............................................................................................................................................10
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
4.10
4.11
4.12
4.13
4.14
4.15

Air Temperature and Humidity ...........................................................................................................................10
Air Pressure .......................................................................................................................................................11
Precipitation .......................................................................................................................................................11
Wet Bulb Temperature.......................................................................................................................................11
Specific Enthalpy ...............................................................................................................................................11
Air Density .........................................................................................................................................................11
Wind ..................................................................................................................................................................11
Compass ...........................................................................................................................................................11
Heating ..............................................................................................................................................................11
Global Radiation ................................................................................................................................................11
Lightning Sensor ................................................................................................................................................11
External Temperature Sensor............................................................................................................................11
External Rain Gauge .........................................................................................................................................12
(WS100-UMB only: ) Impulse Output for Rain Gauge Simulation ......................................................................12
Sensor Technology (example: WS600-UMB) ....................................................................................................13

Generation of Measurements ...................................................................................................................................14
5.1
5.2
5.3
5.4

Accessories .........................................................................................................................................................9
Spare Parts..........................................................................................................................................................9
Additional Documents and Software ....................................................................................................................9

Current Measurement (act)................................................................................................................................14
Minimum and Maximum Values (min and max) .................................................................................................14
Average Value (avg) ..........................................................................................................................................14
Vectorial Average Value (vct) ............................................................................................................................14

Measurement Output ................................................................................................................................................15
6.1
6.2
6.3
6.4
6.5
6.6
6.7
6.8
6.9
6.10
6.11
6.12
6.13
6.14
6.15
6.16
6.17
6.18

Air and Dewpoint Temperature ..........................................................................................................................15
Wind Chill Temperature .....................................................................................................................................15
Humidity.............................................................................................................................................................15
Air Pressure .......................................................................................................................................................15
Wet Bulb Temperature.......................................................................................................................................16
Specific Enthalpy ...............................................................................................................................................16
Air Density .........................................................................................................................................................16
Wind Speed .......................................................................................................................................................17
Wind Direction ...................................................................................................................................................17
Wind Measurement Quality ...............................................................................................................................18
Compass ...........................................................................................................................................................18
Precipitation Quantity - Absolute .......................................................................................................................19
Precipitation Quantity - Differential ....................................................................................................................19
Precipitation Intensity.........................................................................................................................................19
Precipitation Type ..............................................................................................................................................20
Heating Temperature .........................................................................................................................................20
Global Radiation ................................................................................................................................................20
Lightning Sensor ................................................................................................................................................21

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

6.19 Service Messages............................................................................................................................................. 21
6.20 Drop Diameter Distribution (WS100 only) ........................................................................................................ 22
7

Installation ................................................................................................................................................................ 23
7.1
7.2
7.3

Connections.............................................................................................................................................................. 27
8.1
8.2
8.3
8.4
8.5
8.6

Fastening .......................................................................................................................................................... 23
North Alignment ................................................................................................................................................ 24
Selecting the Installation Location..................................................................................................................... 25
Supply Voltage .................................................................................................................................................. 28
RS485 Interface ................................................................................................................................................ 28
Connection to ISOCON-UMB (8160.UISO) ...................................................................................................... 29
Use of Surge Protection (8379.USP) ................................................................................................................ 29
Connection of External Temperature and Precipitation Sensors ...................................................................... 29
(WS100-UMB only: ) Connection of Impulse Output for Rain Gauge Simulation .............................................. 29

Commissioning ........................................................................................................................................................ 30

10 Configuration and Test ............................................................................................................................................ 31
10.1
10.2
10.3
10.4
10.5

Factory Settings ................................................................................................................................................ 32
Configuration with the UMB-Config-Tool........................................................................................................... 32
Function Test with UMB-Config-Tool ................................................................................................................ 39
Operating Modes of the Smart Weather Sensor ............................................................................................... 40
Operating Modes for Equipment Heating .......................................................................................................... 42

11 Firmware Update ...................................................................................................................................................... 44
12 Maintenance.............................................................................................................................................................. 44
12.1 Maintenance of the Rain Gauge ....................................................................................................................... 45
13 Technical Data .......................................................................................................................................................... 46
13.1 Measuring Range / Accuracy ............................................................................................................................ 48
13.2 Drawings ........................................................................................................................................................... 51
14 EC Certificate of Conformity ................................................................................................................................... 63
14.1 WS100 FCC Compliance Statement (US) ........................................................................................................ 64
14.2 WS 100 IC Compliance Statement (CA) ........................................................................................................... 64
15 Fault Description ...................................................................................................................................................... 65
16 Disposal .................................................................................................................................................................... 66
16.1 Within the EC .................................................................................................................................................... 66
16.2 Outside the EC ................................................................................................................................................. 66
17 Repair / Corrective Maintenance ............................................................................................................................. 66
17.1 Technical Support ............................................................................................................................................. 66
18 External Sensor ........................................................................................................................................................ 67
18.1 External Temperature and Precipitation Sensors ............................................................................................. 67
19 Appendix ................................................................................................................................................................... 69
19.1
19.2
19.3
19.4
19.5
19.6
19.7
19.8

Channel List Summary...................................................................................................................................... 69
Channel List Summary per TLS2002 FG3 ........................................................................................................ 71
Communication in Binary Protocol .................................................................................................................... 72
Communication in ASCII Protocol ..................................................................................................................... 75
Communication in Terminal Mode .................................................................................................................... 78
Communication in SDI-12 Mode ....................................................................................................................... 81
Communication in Modbus Mode.................................................................................................................... 124
Communication: XDR Protocol ....................................................................................................................... 136

20 List of Figures......................................................................................................................................................... 148
21 Index ........................................................................................................................................................................ 149

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Please Read Before Use

This manual is valid for devices of the Lufft WS family with device version 200 or
higher(2015), WS100-UMB with device version 010 (2017) or higher.Some functions or
features specified in this manual may not be available or may not be valid with older
device versions. The device version is indicated as the last number of the serial number,
e.g.: the device with SN: 063.1010.0701.021has the device version 21.
If you are using an older device of the WS family, please refer to the manual for device
versions up to 49 or for versions prior to 30 (www.lufft.com/en/support/downloads).
1.1

Symbols Used

Important information concerning potential hazards to the user

Important information concerning the correct operation of the equipment
1.2

Safety Instructions

 Installation and commissioning must be carried out by suitably qualified
specialist personnel only.
 Never take measurements on or touch live electrical parts.
 Pay attention to the technical data and storage and operating conditions.
1.3

Designated Use

 The equipment must only be operated within the range of the specified technical
data.
 The equipment must only be used under the conditions and for the purposes for
which it was designed.
 The safety and operation of the equipment can no longer be guaranteed if it is
modified or adapted.
1.4
Incorrect Use
If the equipment is installed incorrectly
 It may not function.
 It may be permanently damaged.
 Danger of injury may exist if the equipment is allowed to fall.
If the equipment is not connected correctly
 It may not function.
 It may be permanently damaged.
 The possibility of an electrical shock may exist.
1.5
Warranty
The Warranty period is 12 months from the date of delivery. The warranty is forfeited if the
designated use is violated.
1.6
Brand Names
All brand names referred to are subject without limitation to the valid trademark and
ownership rights of the respective owner.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Scope of Delivery

 Equipment

WS100-UMB

WS200-UMB

WS300-UMB

WS400-UMB

WS500-UMB

WS301-UMB

WS501-UMB

WS401-UMB

WS601-UMB

WS700-UMB
WS800-UMB

WS310-UMB

WS510-UMB

 Connection cable 10m

 Operating manual

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

WS600-UMB

Operating Manual

Smart Weather Sensor

Order Numbers

WS100-UMB

8367.U03 (Europe (EN))

 Precipitation Radar

8367.U04 (USA, Canada (FCC))

 Impulse Output for Raingauge Simulation

WS200-UMB

8371.U01

 Wind Direction
 Wind Speed
 Compass

WS300-UMB

8372.U01

 Air Temperature
 Relative Humidity
 Air Pressure

WS301-UMB
WS302-UMB
WS303-UMB
WS304-UMB
WS310-UMB

8374.U01
8374.U10
8374.U11
8374.U12
8374.U13

 Air Temperature
 Relative Humidity
 Air Pressure
 Global Radiation

WS400-UMB

8369.U01 (Europe, USA, Canada)

 Precipitation Radar

8369.U02 (UK)

 Air Temperature
 Relative Humidity
 Air Pressure

WS401-UMB

8377.U01

 Precipitation Rain Gauge
 Air Temperature
 Relative Humidity
 Air Pressure

WS500-UMB

8373.U01

 Wind Direction
 Wind Speed
 Air Temperature
 Relative Humidity
 Air Pressure
 Compass

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

WS501-UMB
WS502-UMB
WS503-UMB
WS504-UMB
WS510-UMB

8375.U01
8375.U10
8375.U11
8375.U12
8375.U13

 Wind Direction
 Wind Speed
 Air Temperature
 Relative Humidity
 Air Pressure
 Compass
 Global Radiation

WS600-UMB

8370.U01 (Europe, USA, Canada)

 Precipitation Radar

8370.U02 (UK)

 Wind Direction
 Wind Speed
 Air Temperature
 Relative Humidity
 Air Pressure
 Compass

WS601-UMB

8376.U01

 Precipitation Rain Gauge
 Wind Direction
 Wind Speed
 Air Temperature
 Relative Humidity
 Air Pressure
 Compass

WS700-UMB

8380.U01 (Europe, USA, Canada)

 Precipitation Radar
 Wind Direction
 Wind Speed
 Air Temperature
 Relative Humidity
 Air Pressure
 Compass
 Global Radiation

WS800-UMB

8381.U01 (Europe, USA, Canada)

 Precipitation Radar
 Wind Direction
 Wind Speed
 Air Temperature
 Relative Humidity
 Air Pressure
 Compass
 Global Radiation
 Lightning Sensor

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

3.1
Accessories
Power supply unit 24V/100VA
ISOCON-UMB
Surge protection
External Rain Gauge WTB100
External Temperature Sensors
Temperature Sensor WT1
Passive Road Surface Temperature Sensor WST1
3.2
Spare Parts
Connection cable 10m

8366.USV1
8160.UISO
8379.USP
8353.10
8160.WT1
8160.WST1

On enquiry

3.3
Additional Documents and Software
You can download the following documents and software via the Internet at www.lufft.com.
Operating Manual
 This document
UMB-Config-Tool

 Windows software for testing, firmware updates and
configuration of UMB devices

UMB Protocol

 Communications protocol for UMB devices

Firmware

 The current device firmware

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Equipment Description

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WS800-UMB

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WS700-UMB

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WS601-UMB

WS401-UMB

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WS600-UMB

WS400-UMB

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●

WS501-UMB***

WS301-UMB**

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●

WS500-UMB

WS300-UMB

Air temperature
Humidity
Air pressure
Precipitation
Wind direction
Wind speed
Compass
Global Radiation
Lightning Sensor
Temperature (ext)
Rain Gauge (ext)
Power Save 2

WS200-UMB

WS100-UMB

The WS family is a range of low cost smart combination of weather sensors for the
acquisition of a variety of measurement variables, as used for example for environmental
data logging in road traffic management systems. Depending on the model, each device has
a different combination of sensors for the various measurement variables.

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●*
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●

*) WS401-UMB and WS601-UMB use a rain gauge for precipitation measurement
**) is also valid for WS302-UMB, WS303-UMB, WS304-UMB, WS310-UMB
***) is also valid for WS502-UMB, WS503-UMB, WS504-UMB, WS510-UMB

Sensors marked (ext) in the table are additional accessories and not included with the
device. The table shows which external sensors can be connected to the different models.
Note: The external temperature sensor and the external rain gauge use the same input, so
only one of them can be connected simultaneously.
Attention: Please note that, due to the approval of the radar sensor used, there are different
country options on equipment which includes precipitation measurement by radar
technology.
The equipment is connected by way of an 8 pole screw connector and associated
connection cable (length 10m).
The measured values are requested over the RS485 interface in accordance with UMB
protocol.
During commissioning, configuration and measurement polling takes place using the UMB®
Config-Tool (Windows PC software) or the ConfigTool.NET (for WS100-UMB)
4.1
Air Temperature and Humidity
Temperature is measured by way of a highly accurate NTC-resistor while humidity is
measured using a capacitive humidity sensor. In order to keep the effects of external
influences (e.g. solar radiation) as low as possible, these sensors are located in a ventilated
housing with radiation protection. In contrast to conventional non-ventilated sensors, this
allows significantly more accurate measurement during high radiation conditions.
WS100-UMB is not intended for air temperature measurement, so it is not equipped with a
radiation shield. Air temperature values with reduced accuracy are available as service
channels for additional information.
Additional variables such as dewpoint, absolute humidity and mixing ratio are calculated
from air temperature and relative humidity, taking account of air pressure.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

4.2
Air Pressure
Absolute air pressure is measured by way of a built-in sensor (MEMS). The relative air
pressure referenced to sea level is calculated using the barometric formula with the aid of
the local altitude, which is user-configurable on the equipment.
4.3
Precipitation
Tried and tested radar technology from the R2S-UMB sensor is used to measure
precipitation. The precipitation sensor works with a 24GHz Doppler radar, which measures
the drop speed and calculates precipitation quantity and type by correlating drop size and
speed.
WS401-UMB and WS601-UMB are using an unheated rain gauge for precipitation
measurement. This version can be recommended for low power application etc.
4.4
Wet Bulb Temperature
The wet bulb temperature is the temperature of a moist or icy surface exposed to air flow.
4.5
Specific Enthalpy
Parameter of state of the humid air, composed of the specific enthalpies (heat capacity) of
the components of the mixture and related to the mass fraction of the dry air (at 0°C).
4.6
Air Density
The air density indicates how much mass in a given volume of air is contained and it is
calculated from the measured values of air temperature, humidity and air pressure.
4.7
Wind
The wind meter uses 4 ultrasonic sensors which take cyclical measurements in all directions.
The resulting wind speed and direction are calculated from the measured run-time sound
differential. The sensor delivers a quality output signal indicating how many good readings
were taken during the measurement interval.
4.8
Compass
The integrated electronic compass can be used to check the north – south adjustment of the
sensor housing for wind direction measurement. It is also used to calculate the compass
corrected wind direction.
4.9
Heating
The precipitation sensor and wind meter are heated for operation in winter.
4.10 Global Radiation
The global radiation is measured by a pyranometer mounted in the top cover of the Smart
Weather Sensor.
4.11 Lightning Sensor
WS800-UMB includes lightning detection by an integrated sensor analysing the radio wave
emission of lightnings. It delivers a count of recognized lightnings.
The sensor analyses spectrum and wave form of the received signal to suppress the
detection of man made electrical discharges. Nevertheless false detections can not be totally
excluded specially in an environment with high power electrical equipment.
4.12 External Temperature Sensor
Optionally all models may be equipped with an external NTC temperature sensor for the
acquisition from additional measurement points. The type of NTC is the same as used for the
internal air temperature sensor.
External temperature sensor and external rain gauge can not be connected at the same
time.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

4.13 External Rain Gauge
Models without integrated precipitation acquisition can be equipped with an external rain
gauge.
External rain gauge and external temperature sensor can not be connected at the same
time.
4.14 (WS100-UMB only: ) Impulse Output for Rain Gauge Simulation
WS100-UMB provides a digital impulse output for simulation of a rain gauge. Depending on
configuration settings the output is pulsed once for each 1.0mm, 0.1mm or 0.01mm (default)
of precipitation.
If the WS100-UMB is configured for impulse output, the serial interface is not available for
communication in UMB or other serial protocols.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

4.15 Sensor Technology (example: WS600-UMB)

Precipitation sensor
(heated)

Wind meter
(heated)

Air pressure sensor in
device

Air temperature and relative
humidity with fan on underside
of device

Connector
Mounting bracket with
springs and self-locking nuts
Notch for attaching
connection cable
Figure 1: Sensor
Technology

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Generation of Measurements

5.1
Current Measurement (act)
In accordance with the specified sampling rate, the value of the last measurement is
transmitted when the current measurement value is requested. Each measurement is stored
in a circular buffer for the subsequent calculation of minimum, maximum and average
values.
5.2
Minimum and Maximum Values (min and max)
When requesting the minimum and maximum values, the corresponding value is calculated via the circular buffer at the interval (1 – 10 minutes) specified in the configuration - and
transmitted.
Note: In the case of wind direction, the minimum / maximum value indicates the direction at
which the minimum / maximum wind speed was measured.
5.3
Average Value (avg)
When requesting the average value, this is calculated - via the circular buffer at the interval
(1 – 10 minutes) specified in the configuration - and transmitted. In this way moving
averages can also be calculated.
For some values the standard deviation is calculated for the same interval. The calculation of
standard deviation will only be activated after the related UMB channel has been requested
for the first time.
5.4
Vectorial Average Value (vct)
In the specific case of wind measurement, measurements are calculated vectorially. To this
end, the average values of the vectors are generated internally. This calculation is performed
with the same configured interval time as that for the minimum, maximum and average
values. Hence the value (wind speed) and angle (wind direction) of the vector are calculated.

Note: On delivery, the interval for the calculation of minimum, maximum and average values
is set at 10 minutes. If necessary, this can be adjusted to the particular requirements (1 – 10
minutes) with the aid of the UMB-Config-Tool (see page 31).
Note: The evaluation of the standard deviation values is deactivated after power on of the
device. The function will be activated with the first request to any of the standard deviation
channels.
To get standard deviation values of the first integration period after power on a dummy
request to any one of the standard deviation channels should be inserted.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Measurement Output

Measurements are transmitted in accordance with UMB binary protocol (Factory Settings).
You can find an example of a measurement request in different protocols and a complete
summary of the list of channels in the Appendix.
6.1
Air and Dewpoint Temperature
Sampling rate
1 minute
Generation of average value
1 – 10 minutes
Units
°C; °F
Request channels:
UMB Channel

Measuring Range

act

min

max

avg

Measurement Variable (float32)

min

max

unit

100

120

140

160

Air temperature

-50.0

60.0

°C

105

125

145

165

Air temperature

-58.0

140.0

°F

110

130

150

170

Dewpoint temperature

-50.0

60.0

°C

115

135

155

175

Dewpoint temperature

-58.0

140.0

°F

101

External Temperature Sensor

-40.0

80.0

°C

106

External Temperature Sensor

-40.0

176.0

°F

6.2
Wind Chill Temperature
Sampling rate
1 minute, computed on base of the average temperature
and average wind speed
Units
°C; °F
Request channels:
UMB Channel
act

min

max

Measuring Range
avg

Measurement Variable (float32)

min

max

unit

111

Wind chill temperature

-60.0

70.0

°C

116

Wind chill temperature

-76.0

158.0

°F

6.3
Humidity
Sampling rate
Generation of average value
Units
Request channels:

1 minute
1 – 10 minutes
%RH; g/m³; g/kg

UMB Channel

Measuring Range

act

min

max

avg

Measurement Variable (float32)

min

max

200

220

240

260

Relative humidity

0.0

100.0

205

225

245

265

Absolute humidity

0.0

1000.0

g/m³

210

230

250

270

Mixing ratio

0.0

1000.0

g/kg

6.4
Air Pressure
Sampling rate
Generation of average value
Unit
Request channels:

unit

1 minute
1 – 10 minutes
hPa

UMB Channel

Measuring Range

act

min

max

avg

Measurement Variable (float32)

min

max

unit

300

320

340

360

Absolute air pressure

300

1200

hPa

305

325

345

365

Relative air pressure

300

1200

hPa

Note: For the correct calculation of relative air pressure, the altitude of the sensor must be
entered in the device configuration (see Figure 11 on page 34). The factory setting for
altitude is 0m; in this way both measurement variables deliver the same values.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

6.5
Wet Bulb Temperature
Sampling rate
1 minute
Units
°C; °F
Request channels:
UMB Channel

Measuring Range

act

Measurement Variable (float32)

min

max

unit

114

Wet Bulb Temperature

-50.0

60.0

°C

119

Wet Bulb Temperature

-58.0

140.0

°F

act

Measurement Variable (float32)

min

max

unit

215

Specific Enthalpy

-100.0

1000.0

kJ/kg

act

Measurement Variable (float32)

min

max

unit

310

Air Density

0.0

3.0

kg/m³

6.6
Specific Enthalpy
Sampling rate
1 minute
Unit
kJ/kg
Request channels:
UMB Channel

6.7
Air Density
Sampling rate
Unit
Request channels:

Measuring Range

1 minute
kg/m³

UMB Channel

Measuring Range

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

6.8
Wind Speed
Sampling rate
1 sec / 10 sec (internal sampling frequency 15Hz)
Generation of average value
1 – 10 minutes
Generation of maximum value 1 – 10 minutes based on the internal second
measurements
Units
m/s; km/h; mph; kts
Response threshold
0.3 m/s
Request channels:
UMB Channel

Measuring Range

act

min

max

avg

vct

Measurement Variable (float32)

min

max

unit

400

420

440

460

480

Wind Speed

75.0

m/s

405

425

445

465

485

Wind Speed

270.0

km/h

410

430

450

470

490

Wind Speed

167.8

mph

415

435

455

475

495

Wind Speed

145.8

kts

401

Wind Speed Fast

75.0

m/s

406

Wind Speed Fast

270.0

km/h

411

Wind Speed Fast

167.8

mph

416

Wind Speed Fast

145.8

kts

403

Wind Speed Standard Deviation *

75.0

m/s

413

Wind Speed Standard Deviation *

167.8

mph

Note: The second measurements are averaged over 10 seconds for the output of the current
(act) measurement. The 'fast' channels deliver every second a value.
6.9
Wind Direction
Sampling rate
1 sec / 10 sec (internal sampling frequency 15Hz)
Generation of average value
1 – 10 minutes
Generation of maximum value 1 – 10 minutes based on the internal second
measurements
Unit
°
Response threshold
0.3 m/s
Request channels:
UMB Channel
act

min

max

500

520

540

avg

Measuring Range
vct

Measurement Variable (float32)

min

max

unit

580

Wind Direction

359.9

501

Wind Direction Fast

359.9

502

Wind Direction Corrected

359.9

503

Wind Dir. Standard Deviation *

359.0

Note: The second measurements are averaged over 10 seconds for the output of the current
(act) measurement. The 'fast' channels deliver every second a value.
The minimum / maximum wind direction indicates the direction at which the minimum /
maximum wind speed was measured.
The corrected wind direction is calculated from the wind direction measured by the wind
sensor and the heading measured by the compass.
Optionally the compass correction of the wind direction can be activated for all wind direction
values. (Settings by UMB Config Tool)
Note: The correction function is designed for correction of the wind direction of a statically
mounted sensor. If the alignment of the sensor changes during the measurement (i.e. if the
sensor is mounted on a rotating platform or similar) the correction function will not in all
cases work properly, especially not for the vector average.
It is of course possible to use the correction function for mobile measurement units, where
the alignment is changed between measurement periods.
*) Note: The evaluation of the standard deviation values will be activated after the first
request of a standard deviation channel. Please see p. 11.

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Smart Weather Sensor

6.10 Wind Measurement Quality
Sampling rate
10 seconds
Unit
%
Request channels:
UMB Channel
act

min

max

avg

Measuring Range
vct

Measurement Variable (float32)

min

max

unit

805

Wind Value Quality

100

806

Wind Value Quality (fast)

100

Note: The value is updated every 10 seconds and transmits the minimum wind
measurement quality for the last 10 seconds interval.
The “fast” value indicates the measurement quality of the one second measurement value.
This value allows the user to assess how well the measurement system is functioning in the
respective ambient conditions. In normal circumstances the value is 90 - 100%. Values up to
50% do not represent a general problem. If the value falls towards zero the measuring
system is reaching its limits.
If during critical ambient conditions the system is no longer able to conduct reliable
measurements, error value 55h (85d) is transmitted (device unable to execute valid
measurement due to ambient conditions).
6.11 Compass
(only device version 030 or higher)
Sampling rate:
5 min
Unit
°
Request channels:
UMB Channel
act

min

510

max

avg

Measuring Range
vct

Measurement Variable (float)

min

max

unit

Compass Heading

359

Note: Reliable operation of the compass is only possible, if the sensor has been mounted
according to the instructions in this manual, i.e. on top of the pole. Should the sensor be
mounted on a traverse, the distribution of iron masses will be different from the situation
during factory calibration. This may lead to additional deviation of the bearing. This also
applies to lightning rods mounted at the pole top!
Dependent on the location of the installation the local declination of the earth magnetic field
has to be considered. The declination value is entered using the UMB-Config-Tool (see page
34). The declination for the installation location can be found in the Internet, e.g. at
http://www-app3.gfz-potsdam.de/Declinationcalc/declinationcalc.html
http://www.ngdc.noaa.gov/geomagmodels/Declination.jsp
Note: When the fan is not rotating the compass measurement value will be influenced by the
magnetic field of the fan. Normally the compass measurement will be performed with the fan
rotating to compensate this influence. If, starting from device version 037, the fan will not be
switched on in case of low operating voltage (less than 12V) deviations of the compass
measurement value must be accepted.
Note: When the device is operated in Power Saving Mode 1 or 2 the compass measurement
is performed only once after power on. Later changes of the orientation of the device will not
be recognized.

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6.12 Precipitation Quantity - Absolute
Sampling rate
Event-dependent on reaching the response threshold
Response threshold
0.01mm (Radar)
Response threshold
0.2 / 0.5 mm (Rain Gauge)
Units
l/m²; mm; in; mil
Request channels:
UMB Channel

Measurement Variable (float32)

Unit

600

Precipitation Quantity - Absolute

l/m²

620

Precipitation Quantity - Absolute

640

Precipitation Quantity - Absolute

660

Precipitation Quantity - Absolute

mil

Note: This measurement indicates the accumulated precipitation quantity since the last
device reboot. The measurement is retained for the duration of a short power failure. To
reset this value, use the corresponding function in the UMB-Config-Tool (see page 37) or
disconnect the device from the power supply for at least one hour.
6.13 Precipitation Quantity - Differential
Sampling rate
Event-dependent on reaching the response threshold
Response threshold
0.01mm (Radar)
Response threshold
0.2 / 0.5 mm (Rain Gauge)
Units
l/m²; mm; in; mil
Request channels:
UMB Chanel

Measurement Variable (float32)

Unit

605

Precipitation Quantity - Differential

l/m²

625

Precipitation Quantity - Differential

645

Precipitation Quantity - Differential

665

Precipitation Quantity - Differential

mil

Note: Each request from a differential channel sets the accumulated quantity back to zero. If
the response from the device is lost due to a transmission error (e.g. poor GPRS
connection), the quantity accumulated to date is also lost. The quantity accumulated to date
is also reset each time the equipment is rebooted.
6.14 Precipitation Intensity
Sampling rate
1 minute
Response threshold
0.1 mm/h
Units
l/m²/h; mm/h; in/h; mil/h
Request channels:
UMB Channel

Measurement Variable (float32)

Range

Unit

800

Precipitation Intensity

0 … 200.0

l/m²/h

820

Precipitation Intensity

0 … 200.0

mm/h

840

Precipitation Intensity

0 … 7.874

in/h

860

Precipitation Intensity

0 … 7874

mil/h

Note: The device versions with radar technology (WS100-UMB, WS400-UMB, WS600-UMB,
WS700-UMB, WS800-UMB) calculate the precipitation intensity from the accumulated
precipitation differences of the last 6 minutes before the measurement data request.
The lower resolution of the rain gauge would lead to high fluctuation of the intensity values,
so the rain gauge versions (WS401-UMB and WS601-UMB), as well as the external rain
gauge, use the accumulated precipitation of the last 60 minutes prior to the current
measurement for intensity calculation.

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6.15 Precipitation Type
Sampling rate
Event-dependent on reaching the response threshold
Response threshold
0.002mm (Radar)
Response threshold
0.2 / 0.5 mm (Rain Gauge)
Follow-up time
2 minutes
Request channels:
UMB Channel

Measurement Variable (uint8)

Coding

Precipitation Type

0 = No precipitation
60 = Liquid precipitation, e.g. rain
70 = Solid precipitation, e.g. snow
40 = unspecified precipitation
(WS401-UMB, WS601-UMB, external
rain gauge)
WS100-UMB only:
67 = freezing rain
69 = sleet
90 = hail

700

Note: A detected precipitation type remains valid for 2 minutes after the end of the
precipitation event. In order to record precipitation types which only occur for a short period
(e.g. short-term rain), the request interval should be 1 minute or shorter.
Ice, hail and sleet are transmitted as rain (60) by devices other than WS100-UMB.
The versions WS401-UMB and WS601-UMB as well as the external rain gauge do not
include detection of precipitation type, so in this case only type 40 (unspecified precipitation)
is indicated. Due to the function of the rain gauge only liquid or molten precipitation can be
recognized.
6.16 Heating Temperature
Sampling Rate
1 Minute
Units
°C; °F
Request Channels:
UMB Channel
act

min

max

Measuring Range
Measurement Variable (float32)

min

max

Unit

112

avg

Heating Temperature Wind Sensor

-50.0

150.0

°C

113

Heating Temperature Precipitation Sensor

-50.0

150.0

°C

117

Heating Temperature Wind Sensor

-58.0

302.0

°F

118

Heating Temperature Precipitation Sensor

-58.0

302.0

°F

6.17 Global Radiation
Sampling Rate
Generation of average values
Unit
Request Channels:

10 seconds
1 – 10 minutes *)
W/m²

UMB Channel

Measuring Range

act

min

max

avg

Measurement Variable (float32)

900

920

940

960

Global Radiation

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

min

max

unit

0.0

2000.0 *)

W/m²

*) Note: The average, maximum and minimum values are evaluated from the 1 minute
averages of the 10 second spot value.
When operated in Power Saving Mode 1 (see page 40) the WS700-UMB will measure the
global radiation only once per minute.

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6.18

Lightning Sensor

6.18.1 Lightning Events
Sampling Rate 1 minute
Sum
1 – 30 minutes
Unit
Events
Request Channels:
UMB Channel
act

Measuring Range

sum

617
677

Measurement Variable (uint16)

min

max

unit

Lightning Events

255

Lightning Events (Interval)

7650

6.19 Service Messages
Service channels are available for the surveillance of the operation of the Smart Weather
Sensor.
Request Channels:
UMB Channel
act

min

max

Measuring Range
avg

Measurement Variable (float32)

min

max

unit

10000

Supply Voltage V

0.0

50.0

11000

Rain Drop Volume µ

0.0

500.0

µl

WS100-UMB only: Air temperature (without radiation shield)
Sampling rate
Generation of average value
Units
Request channels:

1 minute
1 – 10 minutes
°C; °F

UMB Channel

Measuring Range

act

min

max

avg

Measurement Variable (float32)

min

max

unit

4100

4120

4140

4160

Air temperature

-50.0

60.0

°C

4105

4125

4145

4165

Air temperature

-58.0

140.0

°F

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6.20
Drop Diameter Distribution (WS100 only)
Drop diameters of precipitation detected by the radar sensor are shown as distribution of
drop diameter classes. Diameters are calculated as volume equivalent ball diameter.
Sampling Rate
Unit
Abfragekanäle:

Event dependent
Number of events

UMB Channel

Measurement Variable (uint32)

Unit

4600

Total precipitation particles

Events

4601

Total drops

Events

UMB Channel

Measurement Variable (uint16)

Unit

4602

Drizzle particles

Events

4603

Snow particles

Events

4604

Hail particles

Events

4620

Cl. 0: Drops < 0.5mm equiv. diameter

Events

4621

Cl 1: Drops 0.5 .. 1.0mm equiv. diameter

Events

4622

Cl 2: Drops 1.0 .. 1.5mm equiv. diameter

Events

4623

Cl 3: Drops 1.5 .. 2.0mm equiv. diameter

Events

4624

Cl 4: Drops 2.0 .. 2.5mm equiv. diameter

Events

4625

Cl 5: Drops 2.5 .. 3.0mm equiv. diameter

Events

4626

Cl 6: Drops 3.0 .. 3.5mm equiv. diameter

Events

4627

Cl 7: Drops 3.5 .. 4.0mm equiv. diameter

Events

4628

Cl 8: Drops 4.0 .. 4.5mm equiv. diameter

Events

4629

Cl 9: Drops 4.5 .. 5.0mm equiv. diameter

Events

4630

Cl 10: Drops 5.0 .. 5.5mm equiv. diameter

Events

4631

Cl 11: Drops > 5.5mm equiv. diameter

Events

Note: Similar to the request of differential precipitation quantity the accumulated sum of
events of each channel will be reset to 0 after transmission!
For consistent results all related channels should be requested in one run.
If the response from the device is lost due to a transmission error (e.g. poor GPRS
connection), the quantity accumulated to date is also lost. The quantity accumulated to date
is also reset each time the equipment is rebooted.

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Installation

The sensor bracket is designed to be installed on the top of a mast with a diameter of 60 –
76mm.
The following tools are required for the installation:
 Open-end or ring spanner (SW13)
 Compass for aligning the wind meter to the North
7.1

Fastening

Springs

Nuts with washers

Mounting bracket

Mast tube

Figure 2: Fastening to
the Mast

 Loosen nuts
 Push the sensor onto the top of the mast from above
 Tighten the nuts evenly until contact is made with the springs but the sensor can still be
moved easily
 Align the sensor to the North (for wind meters)
 Tighten both nuts with 3 revolutions

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7.2
North Alignment
In order for the wind direction to display correctly, the
sensor must be aligned to the North. The sensor has a
number of directional arrows for this purpose.

Figure 3: North
Markings

Procedure:
 If the sensor is already installed, first loosen both nuts evenly until you can turn the sensor
easily
 Using the compass, identify the North and fix a point of reference on the horizon
 Position the sensor in such a way that the South and North wind sensors are in alignment
with the fixed point of reference in the North
 Tighten both nuts with 3 revolutions
Point of reference in the North

Figure 4: Alignment to
North

poor
good
Note: As the magnetic North Pole indicated by the compass differs from the Geographic
North Pole, account must be taken of the declination (variation) at the location when aligning
the sensor.
Depending on the location, the variation can be more than 15° (in North America for
example). In Central Europe the variation can be largely ignored at present (< 3°). You can
find further helpful information on this subject on the Internet.

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7.3
Selecting the Installation Location
In order to guarantee long service life and correct equipment operation, please pay attention
to the following points when selecting the installation location.
7.3.1

General Instructions

 Stable subsurface for installing the mast
 Free access to the equipment for maintenance works
 Reliable power supply for permanent operation
 Good network coverage when transmitting over a mobile communications network
Note: The computed measurements specifically apply to the equipment location only. No
conclusions can be drawn with regard to the wider environment or a complete road section.
ATTENTION:
 Only approved and tested appliances (conductors, risers etc.) should be used to install the
device on the mast.
 All relevant regulations for working at this height must be observed.
 The mast must be sized and anchored appropriately.
 The mast must be earthed in accordance with regulations.
 The corresponding safety regulations for working at road side and in the vicinity of the
road carriageway must be observed.
If the equipment is installed incorrectly
 It may not function.
 It may be permanently damaged.
 Danger of injury may exist if the equipment is allowed to fall.
7.3.2

Sensors with Wind Measurement / Compass

 Installation at the top of the mast
 Installation height at least 2m above the ground
 Free field around the sensor
Note: Buildings, bridges, embankments and trees may corrupt the wind measurement.
Equally, passing traffic may cause gusts which may influence the wind measurement.
Note: for accurate compass readings, an aluminium mast is recommended.
7.3.3

Sensors with Radar Precipitation Measurement

 Installation on the top of the mast
 Installation height at least 4.5m above the ground
 Distance to road carriageway at least 10m
 Distance from moving objects (e.g. trees, bushes and even bridges) at least 10m at the
height of the sensor
Note: Falling or moving objects, e.g. falling leaves or leaves blowing in the wind, may cause
false measurements and/or precipitation types.
Note: Strong wind can influence the accuracy of the precipitation measurement.
Note: When selecting the installation location please take care to position the device at a
suitable distance from other systems incorporating a 24GHz radar sensor, such as traffic
counting devices on overhead gantry signs. Otherwise cross effects and system
malfunctions may occur. In the final analysis, the distance to other measuring systems also
depends on their range of coverage and signal strength.

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7.3.4

Sensors with Rain Gauge

 Installation on the top of the mast or on crossbar with distance to the mast
 Mast or crossbar mounting shall be exactly perpendicular, otherwise the precision of the
rain gauge may be influenced.
Note: The location should be selected so that pollution of the rain gauge funnel by falling
leaves etc. can be avoided as far as possible.
7.3.5

Sensors with Global Radiation Measurement

 Installation on top of the pole
 Shadow free location, if possible 360° free view to the horizon at the height of the
pyranometer
 Distance to shadow casting objects (trees, buildings) at least 10 times of the object height
relative to the sensor.

7.3.6

Installation Sketch

Example WS600-UMB:

WS600-UMB

min. 5 m
Tree, bush
etc.

Mast

min. 4.5 m

min. 1 m
Figure 5: Installation
Sketch

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Connections

There is an 8 pole screw connector on the underside of the equipment. This serves to
connect the supply voltage and interfaces by way of the supplied connection cable.
Equipment connector:

Figure 6: Connections

View on sensor connection
Pin assignment:
1
White
Supply voltage ground and (SDI12_GND for device version > 41)
2
Brown
Positive supply voltage (through 2.5A fuse where required)*
3
Green
RS485_A (+) or (SDI-12 GND for device version < 42)
4
Yellow
RS485_B (-) or SDI-12 Data Line
5
Grey
External Sensor a
(WS100-UMB only: impulse output Uout)
6
Pink
External Sensor b
(WS100-UMB only: not connected)
7
Blue
Heating voltage ground
8
Red
Positive heating voltage (through 2.5A fuse where required)*
The cable marking is in accordance with DIN 47100.
*) WS100/400/600/700/800-UMB: Supply voltage and heating voltage shall be protected
by a fuses 2.5A (fast) each.
The cable shielding shall be connected to earth in the electrical cabinet.
Note: The yellow protective cap must be removed before plugging in the equipment.
If the equipment is not connected correctly
- It may not function
- It may be permanently damaged
- The possibility of an electrical shock may exist
The supply voltage and the heating voltage are protected against polarity reversal.
Note: When operating the Smart Weather Sensor in SDI12 mode, line 3 (green) shall be
connected only if the SDI12 logger is DC-isolated from the supply voltage of the device. If
signal ground (SDI-12-GND) of the data logger and power supply ground are identical, only
the SDI12-Data-Line (line 4, yellow) may be connected.
Note for SDI12 operation of devices starting from device version 42 or 51 (WS700): If
data logger and device supply voltage are DC-isolated the signal ground (SDI12_GND) must
be connected to line 1 (white). Line 3 (green) shall not be connected. (see SDI12
connection drawings in chapter 19.6)

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8.1
Supply Voltage
The supply voltage for the Smart Weather Sensor is 12 - 24V DC. The power supply unit
used must be approved for operation with equipment of protection class III (SELV).
Starting with device version 037 the Smart Weather Sensor has an extended supply voltage
range of 4 … 32V DC. Operation with a supply voltage of 24V is recommended. Limitations
apply in case of supply voltages lower than 12V (see below).
8.1.1 Limitations in 12V mode
If the heating is operated on 12V DC, account must be taken of the functional restrictions in
winter operation.
Note: A heating voltage of 24V DC is recommended to guarantee full heating duty.
8.1.2 Limitations in Case of Operation with Supply Voltage Below 12V
When operating a Smart Weather Sensor (device version >= 037) with supply voltages lower
than 12V DC, the fan will be not switched on, independent of the fan operating mode. This
may influence the accuracy of temperature and humidity measurement in case of solar
radiation.
Additionally deviations of the compass measurement values have to be accepted.
When operating the Smart Weather Sensor in Power Save Modes with supply voltages
below 12V the minimal supply voltage depends on the length of the connection cable.
The minimal permitted supply voltage (UBmin)can be approximately evaluated from the
equation:
UBmin = 4V + 0.3V (cable length / m)
The minimal supply voltage for a 10m cable is then UBmin = 6V. The influence of the cable
length on minimal supply voltage can be reduced by using of a cable with larger wire cross
section.
8.2
RS485 Interface
The equipment has an electrically isolated, half-duplex, 2 wire RS485 interface for
configuration, measurement polling and the firmware update.
See page 46 for technical details.

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8.3

Connection to ISOCON-UMB (8160.UISO)

Brown: Positive voltage supply
+24V

White: Supply voltage ground
GND2

Green: RS485
Interface A

Yellow: RS485
Interface B

Figure 7: Connection to
ISOCON-UMB

Warning: The heating voltage (red = positive heating voltage; blue = heating voltage
ground) is not connected to the ISOCON-UMB but wired direct to the power supply unit.
During installation please also refer to the operating manual for the ISOCON-UMB.

8.4
Use of Surge Protection (8379.USP)
When using surge protection (Order No.: 8379.USP), please pay attention to the connection
example in the surge protection operating instructions.

8.5
Connection of External Temperature and Precipitation Sensors
External sensors are to be connected to pins 5 and 6 of the plug connector, i.e. to the gray
and pink wires of the cable delivered with the Smart Weather Sensor.
The temperature sensors as well as the external rain gauge are unipolar, so any connection
sequence can be chosen.
The type of external sensor has to be set using the UMB Config Tool.
For details please refer to Chapter18.
8.6

(WS100-UMB only: ) Connection of Impulse Output for Rain Gauge
Simulation
The digital impulse output is available between pin 7 (gray wire) Uout and pin 1 (white) GND.
In idle state the voltage level at Uout is approximately equal to the supply voltage. Each time
the configured amount of precipitation is reached, Uout is pulsed for about 50ms to GND
level.
Activation of the rain gauge simulation mode and selection of the resolution have to be set
by ConfigTool.NET.
For details please refer to Chapter 10.2.

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Commissioning

After the equipment has been installed and connected correctly, the sensor begins
®
autonomously to take measurements. A Windows PC with serial interface, UMB-ConfigTool software and interface cable (SUB-D 9 pole; jack - socket; 1:1) are required for
configuration and test purposes.
Attention must be paid to the following points:
Check for correct equipment operation on site by carrying out a measurement request with
the aid of the UMB-Config-Tool (see page 39).
 Configure the local altitude in order to ensure the correct calculation of relative air
pressure (see page 34).
 The device must be aligned to the North in order to ensure correct wind measurement
(see page 24), or the automatic compass correction must be activated (see page 34).
 In order to get correct compass headings the local declination must be configured (see
page 18and 34).
 If several Smart Weather Sensors are operated on a UMB network, a unique device ID
must be assigned to each device (see page 33).
There is no protective cover to remove on the sensor itself.

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10 Configuration and Test
®

Lufft provides Windows PC software (UMB-Config-Tool) for configuration purposes. The
sensor can also be tested and the firmware updated with the aid of this software.

Note: UMB-Config-Tool is not suitable for configuration settings of the WS100-UMB.
ConfigTool.NET shall be used for configuration settings of the WS100-UMB. Please
refer to the ConfigTool.NET manual.
Attempts to modify the settings of the WS100-UMB by UMB-Config-Tool may render the
device inoperative.
The function test of the WS100-UMB (channel selection and measurement polling) can
optionally be done using UMB-Config-Tool.
With regard to contents the following description applies also to WS100-UMB, as far as the
specific instrumentation of this type is concerned.

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10.1 Factory Settings
The Smart Weather Sensor is delivered with the following settings:
Class ID:
Device ID:
Baud rate:
RS485 protocol:
Calculation interval:
Local altitude:

7 (cannot be modified)
1 (gives address 7001h = 28673d)
19200
Binary
10 measurements
0m

Note: The device ID must be changed if several Smart Weather Sensors are operated on a
UMB network, as each device requires a unique ID. It makes sense to start from ID 1 and
continue in ascending order.
10.2 Configuration with the UMB-Config-Tool
The operation of the UMB-Config-Tool is described in detail in the operating instructions for
®
the Windows PC software. For this reason only the menus and functions specific to the
Smart Weather Sensor are described here.
10.2.1 Sensor Selection
The Smart Weather Sensor is shown here with sensor selection WSx-UMB (Class ID 7).

Figure 8: Sensor
Selection

Note: You do require the current version of the UMB-Config-Tool to configure the Smart
Weather Sensor.
Note: All other devices which are used in the polling process, e.g. modems, LCOM etc.,
must be disconnected from the UMB network during configuration.

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10.2.2 Configuration
After a configuration has been loaded, all relevant settings and values can be adjusted.
Depending on the device type, only the settings pertinent to the respective available sensors
are relevant.
10.2.3 General Settings

Figure 9: General
Settings

ID:

Device ID (factory setting 1; assign device IDs to additional devices in
ascending order).
Description:
In order to differentiate the devices you can enter a description here, e.g.
the location.
Linespeed:
Transmission speed of the RS485 interface (factory setting 19200; DO NOT
CHANGE for operation with ISOCON-UMB).
Protocol:
Communications protocol of the sensor (UMB-Binary, UMB-ASCII, SDI-12,
Modbus-RTU, Modbus-ASCII, Terminal-Mode, XDR).
Timeout:
In the event of a temporary changeover of the communications protocol, the
system switches back to the configured protocol after this time (in minutes)
Important note: If the baud rate is changed, after saving the configuration on the sensor,
the sensor communicates at the new baud rate. When operating the sensor in a UMB
network with ISOCON-UMB, this baud rate must not be changed; otherwise the sensor is
no longer addressable and can no longer be configured.
10.2.4 Temperature, Humidity and Fan Settings

Figure 10:
Temperature, Humidity
and Fan Settings

Offset:

Absolute offset on the measurement in the unit of the accompanying
channel (for on-site calibration).
Interval:
Time in minutes for the minimum, maximum and average value calculation
interval.
Fan:
to reduce electrical power consumption, the fan can be switched off.
Note: if the fan is switched off, all heaters will also be switched off!
With the fan switched off deviations in temperature and humidity
measurement can occur by solar radiation!
Note: In order to calculate dew point, absolute humidity and mixing ratio, the temperature
and humidity measurement always requires the same interval. For this reason different
intervals cannot be set.

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10.2.5 Pressure,

Figure 11: Pressure
Settings

Offset:
Interval:
Altitude:

Absolute offset on the measurement in the unit of the accompanying
channel.
Time in minutes for the minimum, maximum and average value
calculation interval.
Enter the local altitude in meters here for the correct calculation of
relative air pressure (referenced to sea level).

10.2.6 Wind and Compass Settings

Figure 12: Wind
Settings

Offset:

Absolute offset on the measurement in the unit of the accompanying
channel.
Interval:
Time in minutes for the minimum, maximum and average value
calculation interval.
Windspeed min: Approach velocity onto the wind meter with effect from which a
measurement is transmitted, in the unit of the accompanying channel.
Heater mode:
The device can be configured for heating in different operating modes.
Configure as ‘automatic’ in normal operating mode. You can find a
precise description of the operating modes on page 42.
Local declination: Dependent on the location of the installation; the local declination of the
earth magnetic field has to be considered.
Enable Compass for wind-direction correction:
With activated compass correction all wind direction values will be
corrected according to the alignment of the sensor, as evaluated by the
compass.
Note: The offset is not used for the wind meter at present because on-site calibration is not
possible in this case.

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10.2.7 Precipitation Sensor Settings (Radar)

Figure 13: Precipitation
Sensor Settings
(Radar)

Heater mode:

The device can be configured for heating in different operating modes.
Configure as ‘automatic’ in normal operating mode. You can find a precise
description of the operating modes on page 42.
Followup time precipitation type: for this time (in seconds) the detected precipitation type is
shown; to cover all events, this time must be adjusted to the poll rate.
Note: All other parameters, especially those in the ‘Rainfall calibration data’ tab‚ may only be
changed after consultation with the manufacturer, as they have a major influence on the
functioning and accuracy of the sensor.
10.2.8 Precipitation Sensor Settings (Rain Gauge)
The rain gauge module can be operated with resolutions 0.2mm or 0.5mm. The setting of the
resolution is to be done in two steps:
 Mechanical setting
 Configuration setting
The mechanical setting works by modifying the effective area of the funnel. The sensor is
delivered with a reduction ring, which can be mounted on the funnel to reduce the area.
Funnel with reduction ring
resolution 0.5mm
Funnel without reduction ring
resolution 0.2mm
Then the resolution is set in the sensor configuration using the UMB Config Tool.

Figure 14: Precipitation
Sensor Settings (Rain
Gauge)

Caution: If mechanical setting and configuration setting do not conform, the sensor will
deliver wrong precipitation values!

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10.2.9 Global Radiation Settings

Figure 15: Global
Radiation Settings

Interval:

Time in minutes for minimum, maximum and average value calculation

10.2.10 Lightning Sensor Settings

Figure 16: Lightning
Sensor Settings

Interval:

Time in minutes for minimum, maximum and average value calculation

10.2.11 Energy Management

Figure 17: Energy
Management Settings

By setting the operating and heating mode, the energy consumption of the device can be
adapted to the circumstances of the installation.
The different settings are described in the following chapters:



operating modes of Smart Weather Sensor from page 40
operating modes of the heating from page 42

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10.2.12 Reset Precipitation Quantity
To reset the accumulated absolute precipitation quantity the UMB-Config-Tool offers the
following function:
Options WSx-UMB reset rain

Figure 18: Reset
Precipitation Quantity

Confirm the reset with ‘Yes’

Note: The precipitation quantities are reset in ALL Smart Weather Sensors on the respective
UMB network. The devices reboots after this function has been used.

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10.2.13 (WS100-UMB only) Setting of Rain Gauge Simulation
Note: For configuration settings of the WS100-UMB do not use UMB-Config-Tool, but
ConfigTool.NET. For details of operation please refer to the software manual of
ConfigTool.NET.
Note: while the rain gauge simulation is active communication through the serial interface in
UMB or another serial protocol is not possible. To still allow access to the device for
modification of settings etc. UMB protocol will be active during the first 5 sec after power on.
The necessary procedure is described in detail in chapter Fehler! Verweisquelle konnte
nicht gefunden werden..
Rain gauge simulation is selected as a protocol setting.

Abb. 19: Select
operation mode
„Simulated Rain
Gauge“

The resolution of the simulated rain gauge is defined in the field „Sim. RainGauge
Resolution“. Factory setting is 0.01mm, alternatively 1.0mm or 0.1mm may be selected.

Abb. 20: Configure the
resolution of the
simulated rain gauge

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10.3 Function Test with UMB-Config-Tool
The functions of the Smart Weather Sensor can be tested with the UMB-Config-Tool by
polling various channels.
Note: All other devices which are used in the polling process, e.g. modems, LCOM etc.,
must be disconnected from the UMB network during configuration.
10.3.1 Channels for Measurement Polling
You can select the channel for measurement polling by the UMB-Config-Tool by clicking on
the respective channel.

Figure 21 Measurement
Polling Channels

10.3.2 Example of Measurement Polling

Figure 22 Example of
Measurement Polling

Note: The UMB Config Tool is provided for test and configuration purposes only. It is not
suitable for the permanent acquisition of measurement data. We recommend the use of
professional software solutions for this purpose, e.g. Lufft SmartView3.

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10.4 Operating Modes of the Smart Weather Sensor
The power consumption of the Smart Weather Sensor can be adjusted to the properties of
the individual installation by setting the operation mode.
The operation of the power save modes however has certain constraints. These have to be
considered when designing the installation.
In normal operation, where all specified properties of the Smart Weather Sensor are fully
available, the power consumption is mostly determined by heating and fan operation.
10.4.1 Power Saving Mode 1
Following measures are active in power saving mode 1:
 The ventilation of the temperature / humidity unit is switched off
 All heaters are switched off
 The radar rain sensor (WS800-UMB, WS700-UMB, WS600-UMB, WS400-UMB, WS100UMB) is not working continuously. The sensor is activated once per minute for one second
(WS100-UMB: 5sec), if precipitation is detected, it remains turned on until the end of the
event, otherwise it is deactivated after this one second again.
 Compass measurement is only performed once after power up. The fan, which is
otherwise deactivated, will be switched on shortly for the time of this measurement.
 The WS700-UMB / WS800-UMB increases the measuring cycle time for global radiation
from 10 seconds to 1 minute.
Note: This setting has the following restrictions:
 With the fan switched off deviations in temperature and humidity measurement can occur
by solar radiation.
 Only limited winter operation is possible in this operating mode because any icing might
prevent the correct operation of the rain sensor or wind meter.
 The rain detection may be delayed up to 2 minutes. Short events are possibly not
detected. Thus, deviations in the accuracy of the precipitation quantity are possible.
Compared with normal operation the power consumption of a WS600-UMB can be reduced
to 10% even neglecting the heating. (during precipitation events the consumption is slightly
higher, due to the rain sensor then permanently switched on, about 20% compared to normal
operation).

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10.4.2 Power Saving Mode 2
Power saving mode 2 permits another relevant reduction of the power consumption, but
adds on the other hand more severe restrictions.
In this operation mode the device will be almost completely switched off and will wake up
only by the data request for one measurement cycle. During measurement and data
transmission the device will be switched on for about 10 – 15 sec. The total consumption will
be mostly determined by the data request interval.
Note: This operating mode has the following restrictions:
 All restrictions of power saving mode 1
 Power saving mode 2 is not available for devices with radar rain sensor (WS800-UMB,
WS700-UMB, WS600-UMB, WS400-UMB, WS100-UMB). We recommend devices with
tipping bucket rain gauge for low power applications.
 The calculation of average, minimum and maximum as well as precipitation intensity are
not available. Only instantaneous values will be transmitted.
 Compass measurement is only performed once after power up. The fan, which is
otherwise deactivated, will be switched on shortly for the time of this measurement.
 Communication protocol Modbus is not available
 When using the UMB protocol a certain request sequence and timing is required (s. Chap.
19.3.7). The interval length must be at least 15sec to make sure that the measurement
and transmission cycle can be completed. Shorter interval could cause the device to stay
in transmission state without starting a new measurement.
 The joint operation with other sensors in an UMB network is possible, but it has to be
considered that each telegram (even when addressed to another device) will cause the
Smart Weather Sensor to wake up for at least several seconds, thus increasing the total
power consumption. The minimum interval length must be hold up under consideration of
the telegrams with other addresses. Mixed operation of devices in power saving mode 2
with devices in normal operation and fast request rates within the same UMB network is
not possible.

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10.5 Operating Modes for Equipment Heating
Heating is configured to ‘Automatic’ when the product is delivered. This is the recommended
operating mode for heating the sensor.
You can set the following operating modes:
Heater
Mode
Automatic
Off
Mode 1
Eco-Mode 1

WS100WS600WS200- WS400- WS500- WS501WS601UMB
UMB
UMB
UMB
UMB
UMB *)
UMB
**)

●
●
●
●

●
●

●
●
●
●

●
●
●

●
●
●
●

●
●
●

*) is also valid for WS502-UMB, WS503-UMB, WS504-UMB, WS510-UMB
**) is also valid for WS700-UMB and WS800-UMB

Note: Model WS30x-UMB and WS401-UMB are not heated.
The rain sensor and wind meter settings must be adjusted in the respective configuration
mask. The examples show the wind meter setting.
10.5.1 Automatic
In this operating mode, the sensor is maintained constantly at the control temperature,
generally in order to prevent the effects of snow and ice.

Figure 23: Operating
Modes for Equipment
Heating

Setpoint Temp.:
The heating controls at this temperature (in °C)
The settings for the other values are not relevant.
10.5.2 Off
In the ‘Off’ operating mode heating is completely disabled. Winter operation is not possible in
this operating mode because any icing might prevent the correct operation of the rain sensor
or wind meter.

The value settings are not relevant.
10.5.3 Mode 1
In ‘Mode 1’ operating mode heating is only enabled when the outside temperature falls below
the HeatingMode1 temperature (in °C). In this mode power consumption can be reduced in
frost-free situations with no great restriction on winter operation.

Setpoint Temp.:
Heating mode1 Temp.:

The heating controls at this temperature (in °C)
Threshold temperature (in °C) with effect from
which air temperature heating is enabled
The ‘Eco Mode1 follow-up time’ setting is not relevant.

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10.5.4 Eco-Mode 1
Eco Mode1 is an advanced energy saving mode.
Heating is only switched on when the following conditions are met:
 The outside temperature is below the threshold temperature and precipitation was
detected. Heating then runs at the control temperature for 30 minutes (after the last
precipitation event).
 When the outside temperature lies constantly below the threshold temperature and there
was no heating for more than 20h, heating is switched on for 30 minutes as a
precautionary measure in order to thaw any icing.
However, the precautionary 20h-heating only runs if the outside temperature was measured
at below the threshold temperature for the entire period and conditions were constantly
bright for at least 3 hours.

Setpoint Temp.:
Heating mode1 Temp.:

The heating controls at this temperature (in °C)
Threshold temperature (in °C) with effect from
which heating is enabled
Follow-up time (in minutes)

Eco mode1 follow-up time:
Examples:
Outside temperature constantly below 5°C; no precipitation for more than 24h

Outside temperature constantly below 5°C; with precipitation

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11 Firmware Update
To keep the sensor in accordance with the latest state-of-the-art, it is possible to carry out a
firmware update on site with no need to remove the sensor and return it to the manufacturer.
The firmware update is carried out with the aid of the UMB-Config-Tool.
The firmware update of the WS100-UMB is carried out with ConfigTool.NET.
The description of the firmware update can be found in the instructions for the UMB-ConfigTool. Please download the latest firmware and UMB-Config-Tool from our website
®
www.lufft.com and install it on a Windows PC. You can find the instructions here:

Note: When a firmware update takes place, under certain circumstances the absolute
precipitation quantities are reset (channel 600 – 660).
There is one firmware for the entire product family (except WS100-UMB) which supports all
models (WSx_Release_Vxx.mot).
The firmware for WS100-UMB is named WS100_Release_Vxx.bin.
Important Note: please read the included text file in WSx_Release_Vxx.zip; it contains
important information about the update!

12 Maintenance
In principle the equipment is maintenance-free.
However, it is recommended to carry out a functional test on an annual basis. When doing
so, pay attention to the following points:
 Visual inspection of the equipment for soiling
 Check the sensors by carrying out a measurement request
 Check the operation of the fan (not on WS200-UMB)
In addition, an annual calibration check by the manufacturer is recommended for the
humidity sensor (not on WS200-UMB). It is not possible to remove or replace the humidity
sensor. The complete Smart Weather Sensor must be sent to the manufacturer for testing.
Cleaning of the glass dome at regular intervals is suggested for devices with global radiation
measurement. The length of the interval should be adapted to the local degree of pollution.
Devices with precipitation measurement by rain gauge (WS401-UMB, WS601-UMB): The
rain gauge funnel needs to be cleaned at regular intervals (see below). The length of the
interval should be adapted to the local degree of pollution.

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12.1 Maintenance of the Rain Gauge
The function of the rain gauge will be significantly influenced by pollution of the funnel or the
tipping bucket mechanism. Regular check and, if necessary, cleaning is required. The
maintenance interval depends very much on local conditions and also on seasons (leaves,
pollen, etc.) and therefore cannot be exactly defined here (it may be in the range of weeks).

Figure 24: WS601-UMB
with removed funnel



Only clean when obviously polluted



Avoid moving the tipping mechanism (otherwise wrong counts will occur)



Use water, soft cloth and / or a soft brush for cleaning



Unlock funnel by turning it to the left and lift it off



Clean funnel, specially the sieve slots



Check the inside of the rain gauge module for pollution, especially for spider webs
and insects, if necessary, clean it



Check tipping bucket for pollution, if necessary wash carefully with clean water.
Caution: each movement of the bucket generates a counting pulse and thus may
cause faulty precipitation amounts



Check water drain, clean if necessary



Put funnel back in place and lock it by turning it to the right

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13 Technical Data
Power supply:

24VDC +/- 10%
12VDC with restrictions (see page 28)
Device version >= 037:
4 ... 32V DC
Limitations apply in case of supply voltage
less than 12V (see p. 28 f.)
Current consumption – sensor; values for devices prior to version 037 in brackets:
1

Mode
Supply
WS100-UMB
WS200-UMB
WS300-UMB
WS301-UMB
WS302-UMB
WS303-UMB
WS304-UMB
WS310-UMB
WS400-UMB
WS401-UMB
WS500-UMB
WS501-UMB
WS502-UMB
WS503-UMB
WS504-UMB
WS510-UMB
WS600-UMB
WS700-UMB
WS800-UMB
WS601-UMB

Standard
2
24VDC
42 mA
16 mA
135 mA
135 mA

12VDC
82 mA
25 mA
70 mA
70 mA

Power Saving Mode 1
24VDC
12VDC
17 mA
33 mA
15 mA
24 mA
7 mA
7 mA
8 mA
8 mA

Power Saving Mode 2
24VDC
12VDC
--1 (4) mA
2 mA
1 (4) mA
2 mA
1 (4) mA
2 mA

160 mA
130 mA
140 mA
145 mA

110 mA
65 mA
85 mA
85 mA

7 mA
6 mA
16 mA
16 mA

7 mA
6 mA
25 mA
25 mA

-1 (4) mA
1 (4) mA
1 (4) mA

-2 mA
2 mA
2 mA

160 mA

130 mA

16 mA

25 mA

140 mA

85 mA

15 mA

24 mA

1 (4) mA

2 mA

Current consumption and power input - heating:
WS100-UMB
WS200-UMB
WS400-UMB
WS500-UMB, WS501-UMB, WS502-UMB
WS503-UMB, WS504-UMB, WS510-UMB
WS600-UMB, WS700-UMB, WS800-UMB
WS601-UMB

380 mA / 9.1VA at 24VDC
833 mA / 20VA at 24VDC
833 mA / 20VA at 24VDC
833 mA / 20VA at 24VDC
1,7 A / 40VA at 24VDC
833mA / 20VA at 24VDC

Dimensions including mounting bracket:
WS100-UMB
WS200-UMB
WS300-UMB
WS301-UMB
WS302-UMB
WS303-UMB
WS304-UMB
WS310-UMB
WS400-UMB
WS401-UMB
WS500-UMB
WS501-UMB
WS502-UMB
WS503-UMB
WS504-UMB
WS510-UMB
WS600-UMB
WS601-UMB
WS700-UMB
WS800-UMB

Ø 150mm, height 190mm
Ø 150mm, height 194mm
Ø 150mm, height 223mm
Ø 150mm, height 268mm
Ø 150mm, height 253mm
Ø 150mm, height 328mm
Ø 150mm, height 313mm
Ø 150mm, height 311mm
Ø 150mm, height 279mm
Ø 164mm, height 380mm
Ø 150mm, height 287mm
Ø 150mm, height 332mm
Ø 150mm, height 377mm
Ø 150mm, height 392mm
Ø 150mm, height 317mm
Ø 150mm, height 376mm
Ø 150mm, height 343mm
Ø 164mm, height 445mm
Ø 150mm, height 344mm
Ø 150mm, height 344mm

Description of operating modes, see page 35

Factory default, recommended setting

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Weight including mounting bracket, excluding connection cable:
WS100-UMB
WS200-UMB
WS300-UMB
WS400-UMB, WS301-UMB, WS302-UMB,
WS303-UMB, WS304-UMB, WS310-UMB
WS401-UMB
WS500-UMB
WS600-UMB, WS501-UMB, WS502-UMB,
WS503-UMB, WS504-UMB, WS700-UMB
WS510-UMB, WS800-UMB
WS601-UMB

ca. 0.6 kg
ca. 0.8 kg
ca. 1.0 kg
ca. 1.3 kg
ca. 1.5 kg
ca. 1.2 kg
ca. 1.5 kg

ca. 1.7 kg

Fastening:

Stainless steel mast bracket for Ø 60 - 76mm

Protection class:
Protection type:

III (SELV)
IP66

Storage Conditions
Permissible storage temperature:
Permissible relative humidity:

-50°C ... +70°C
0 ... 100% RH

Operating Conditions
Permissible operating temperature:
Permissible relative humidity:
Permissible altitude above sea level:

-50°C ... +60°C
0 ... 100% RH
N/A

RS485 interface, 2 wire, half-duplex
Data bits:
Stop bit:
Parity:

8
1
No

(SDI-12 mode: 7)

Housing:

Plastic (PC)

(SDI-12 mode: even, Modbus mode none or
even)
Tri-state:
2 bits after stop bit edge
3
Adjustable baud rates:
1200, 2400, 4800, 9600, 14400, 19200 , 28800, 57600
(In SDI-12 mode, the interface is changed to meet the requirements of the standard.)

Factory setting; baud rate for operation with ISOCON-UMB and firmware update.
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13.1 Measuring Range / Accuracy
13.1.1 Air temperature
Measurement process:
NTC
Measuring range:
-50°C ... +60°C
Resolution:
0.1°C (-20°C...+50°C), otherwise 0.2°C
Sensor accuracy:
+/- 0.2°C (-20°C ... +50°C), otherwise +/-0.5°C (>-30°C)
Sampling rate:
1 minute
Units:
°C; °F
(WS100-UMB: the accuracy of the air temperature service channels is not specified)
13.1.2 Humidity
Measurement process:
Measuring range:
Resolution:
Accuracy:
Sampling rate:
Units:

Capacitive
0 ... 100% RH
0.1% RH
+/- 2% RH
1 minute
% RH; g/m³; g/kg

13.1.3 Dewpoint Temperature
Measurement process:
Measuring range:
Resolution:
Accuracy:
Units:

Passive, calculated from temperature and humidity
-50°C ... +60°C
0.1°C
Computed +/- 0.7°C
°C; °F

13.1.4 Air Pressure
Measurement process:
Measuring range:
Resolution:
Accuracy:
Sampling rate:
Unit:

MEMS sensor - capacitive
300 ... 1200hPa
0.1hPa
+/- 0.5hPa (0 … +40°C)
1 minute
hPa

13.1.5 Wind Speed
Measurement process:
Measuring range:
Resolution:
Accuracy:
Response threshold:
Internal sampling frequency:
Instantaneous value:
Output rate for average and
peak gust values:
Units:
13.1.6 Wind Direction
Measurement process:
Measuring range:
Resolution:
Accuracy:
Response threshold:
Internal sampling frequency:
Instantaneous value:
Output rate for average and
peak gust values:

Ultrasonic
0 … 75m/s (WS601-UMB: 0 … 30m/s)
0.1m/s
±0.3 m/s or ±3% (0...35 m/s)
±5% (>35m/s) RMS
0.3 m/s
15Hz
1 sec / 10sec
1min – 10min (peak calculated from 1sec values)
m/s; km/h; mph; kts

Ultrasonic
0 – 359.9°
0.1°
< 3° (> 1m/s) RMSE
0.3 m/s
15Hz
1 sec / 10sec
1min – 10min (peak calculated from 1sec values)

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13.1.7 Precipitation
13.1.7.1 WS100-UMB / WS400-UMB / WS600-UMB / WS700-UMB /WS800-UMB
Measurement process:
Radar sensor
Measuring range (drop size):
0.3 mm ... 5.0 mm
Liquid precipitation resolution:
0.01 mm
Precipitation types:
Rain, snow
Repeatability:
Typically > 90%
Response threshold:
0.002 mm
Sampling rate:
Event-dependent on reaching response threshold
Precipitation intensity:
0 … 200 mm/h; Sampling rate 1 minute
13.1.7.2 WS401-UMB / WS601-UMB
Measurement process:
Rain Gauge
Liquid precipitation resolution:
0.2 mm / 0.5mm (adjustable by reduction ring)
Precipitation types:
Rain
Accuracy:
2%
Sampling rate:
1 minute
13.1.8 Compass
Measurement process:
Measurement range:
Resolution:
Accuracy:
Sampling rate:

Integrated electronic compass
0 ... 359°
1.0°
+/- 10°
5 minutes

13.1.9 Global Radiation
Measurement Process
Measurement Range
Resolution
Sampling Rate

Thermopile pyranometer
0.0 ... 2000.0 W/m²
< 1W/m²
10 seconds

13.1.9.1 WS301-UMB / WS501-UMB
Response time (95%)
18s
Non-stability(change/year)
<1%
Non-linearity (0 to 1000 W/m²)
<1%
Directional error (at 80° with 1000 W/m²)
<20 W/m²
Temperature dependence of sensitivity
<5% (-10 to +40°C)
Tilt error (at 1000 W/m²)
<1%
Spectral range (50% points)
300 ... 2800nm
13.1.9.2 WS302-UMB / WS502-UMB / WS700-UMB / WS800-UMB
Response time (95%)
<1s
Spectral range (50% points)
300 ... 1100nm
13.1.9.3 WS310-UMB / WS510-UMB
Response time (95%)
5s
Non-stability(change/year)
<0.5%
Non-linearity (0 to 1000 W/m²)
<0.2%
Directional error (at 80° with 1000 W/m²)
<10 W/m²
Temperature dependence of sensitivity
<1% (-10 to +40°C)
Tilt error (at 1000 W/m²)
<0.2%
Spectral range (50% points)
285 ... 2800nm

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13.1.10 External Temperature SensorWT1 / WST1
Measurement process:
NTC
Measuring range:
-40°C ... +80°C
Resolution:
0.25°C
Sensor accuracy:
+/- 1°C (WST1: +/-0.3°C between -10°C ...+10°C)
Sampling rate:
1 minute
Units:
°C; °F
13.1.11 External Rain GaugeWTB100
Measurement process:
Rain Gauge with bounce-free reed contact (normally
closed)
Liquid precipitation resolution:
0.2 mm / 0.5mm (adjustable by reduction ring)
Precipitation types:
Rain
Accuracy:
2%
Sampling rate:
1 minute
In principle, all rain sensors with bounce-free reed contact (normally open or normally
closed) and with a resolution of 0.1 mm, 0.2 mm, 0.5 mm or 1.0 mm can be used.

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13.2 Drawings

Figure 25: WS100-UMB

Figure 26: WS200-UMB

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Figure 27: WS200-UMB

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Figure 28: WS301-UMB

WS302-UMB, WS303-UMB und WS304-UMB are similar.

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Figure 29: WS310-UMB

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Figure 30: WS400-UMB

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Figure 31: WS401-UMB

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Smart Weather Sensor

Figure 32: WS500-UMB

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Figure 33: WS501-UMB

WS502-UMB, WS503-UMB und WS504-UMB are similar.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

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Smart Weather Sensor

Figure 34: WS510-UMB

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

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Smart Weather Sensor

Figure 35: WS600-UMB

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Figure 36: WS601-UMB

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Figure 37: WS700UMB, WS800-UMB

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

14 EC Certificate of Conformity
Product:

Smart Weather Sensor

Type:

WS100-UMB (Order No.: 8367.U03)
WS200-UMB (Order No.: 8371.U01)
WS300-UMB (Order No.: 8372.U01)
WS301-UMB (Order No.: 8374.U01)
WS302-UMB (Order No.: 8374.U10)
WS303-UMB (Order No.: 8374.U11)
WS304-UMB (Order No.: 8374.U12)
WS310-UMB (Order No.: 8374.U13)
WS400-UMB (Order No.: 8369.U01 / 8369.U02)
WS401-UMB (Order No.: 8377.U01)
WS500-UMB (Order No.: 8373.U01)
WS501-UMB (Order No.: 8375.U01)
WS502-UMB (Order No.: 8375.U10)
WS503-UMB (Order No.: 8375.U11)
WS504-UMB (Order No.: 8375.U12)
WS510-UMB (Order No.: 8375.U13)
WS600-UMB (Order No.: 8370.U01 / 8370.U02)
WS601-UMB (Order No.: 8376.U01)
WS700-UMB (Order No.: 8380.U01)
WS800-UMB (Order No.: 8381.U01)

We herewith certify that the above mentioned equipment complies in design and
construction with the Directives of the European Union and specifically the EMC Directive in
accordance with 2004/108/EC, the RoHS Directive 2011/65/EU and, where required,
Directive 2014/53/EU.
The complete Certificate of Conformity is available for download from the Lufft website
www.lufft.com

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

14.1 WS100 FCC Compliance Statement (US)

Product:

Smart Weather Sensor

Type:

WS100-UMB (Order No.: 8367.U04)

This device contains FCCID: UF9WS100
This device complies with part 15 of the FCC Rules. Operation is subject to the following two
conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation.
Changes and modifications not expressly approved by manufacturer could void the user’s
authority to operate the equipment.

14.2 WS 100 IC Compliance Statement (CA)

Product:

Smart Weather Sensor

Type:

WS100-UMB (Order No.: 8367.U04)

This equipment contains equipment certified under ICID: 6650A-WS100
This device complies with Industry Canada licence-exempt RSS standard(s).
Operation is subject to the following two conditions:
(1) This device may not cause interference, and
(2) this device must accept any interference received, including interference that may cause
undesired operation of the device.
Le présent appareil est conforme aux CNR d’Industrie Canada applicable aux appareils
radio exempts de licence. L’exploration est autorisée aux deux conditions suivantes:
(1) l’appareil ne doit pas produire de brouillage, et
(2) l’utilisateur de l’appareil doit accepter tout brouillage radioélectrique subi, même si le
bouillage est susceptible d’en compromettre le fonctionnement.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

15 Fault Description
Error description

Cause - Remedy

Device does not allow polling / does - Check power supply
not respond
- Check interface connection
- Incorrect device ID  check ID; devices are
delivered with ID 1.
The device measures precipitation
but it is not raining

Check that the sensor was installed correctly in
accordance with the instructions.

The measured temperature appears Check the operation of the fan on the underside of
too high / measured humidity
the device.
appears too low
Wind direction values are incorrect

Device is not correctly aligned  check that the
device is aligned to the North.

Device transmits error value 24h
(36d)

A channel is being polled that is not available on this
device type; e.g. Channel 200 = humidity is being
polled on a WS200-UMB.

Device transmits error value 28h
(40d)

The device is in the initialization phase following
startup the device delivers measurements after
approx. 10 seconds.

Device transmits error value 50h
(80d)

The device is being operated above the limit of the
specified measuring range.

Device transmits error value 51h
(81d)

The device is being operated below the limit of the
specified measuring range.

Device transmits error value 55h
(85d) during wind measurement

The device is unable to execute a valid
measurement due to the ambient conditions.
This may be due to the following reasons:
- The device is being operated well above the limit of
the specified measuring range
- Very strong horizontal rain or snow
- The wind meter sensors are very dirty  clean
sensor
- The wind meter sensors are iced over  check
heating mode in the configuration and check
heating function / connection
- There are foreign objects within the measuring
section of the wind meter
- One of the wind meter’s sensors is faulty  return
device to manufacturer for repair

The quality of the wind
measurement is not always100%

In normal operation the device should always
transmit 90 – 100%. Values up to 50% do not
represent a general problem.
When the error value 55h (85d) is transmitted this
value is 0%.
If the device permanently transmits values below
50% this may mean that there is a fault.

Device transmits an error value not
listed here

This may be due to a number of reasons  contact
the manufacturer’s technical support department.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

16 Disposal
16.1 Within the EC
The device shall be disposed of in accordance with European Directives 2002/96/EC and
2003/108/EC (waste electrical and electronic equipment).
16.2 Outside the EC
Please comply with the applicable regulations for the proper disposal of waste electrical and
electronic equipment in your respective country.

17 Repair / Corrective Maintenance
Please arrange for any faulty equipment to be checked and, if necessary, repaired by the
manufacturer exclusively. Do not open the equipment and do not under any circumstances
attempt to carry out your own repairs.
In matters of warranty or repair please contact:
G. Lufft Mess- und Regeltechnik GmbH
Gutenbergstraße 20
70736 Fellbach
P.O. Box 4252
70719 Fellbach
Germany
Phone: +49 711 51822-0
Hotline: +49 711 51822-52
Fax: +49 711 51822-41
E-mail: info@lufft.de
or your local distributor.
17.1 Technical Support
Our Hotline is available for technical questions via the following e-mail address:
hotline@lufft.de
You can also consult frequently asked questions at http://www.lufft.com/ (menu header:
SUPPORT / FAQs).

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

18 External Sensor
18.1 External Temperature and Precipitation Sensors
18.1.1 Connection of Temperature and Precipitation Sensors
Additional external sensor can cover the requirements of special measurement requirements
or extend the functionality of Smart Weather Sensors.
Currently the accessory list includes external temperature sensors and the precipitation
detection by tipping bucket rain gauge.
One input is available for this extension, so alternatively one temperature sensor or one
precipitation sensor may be used.
The connection uses the standard connector plug of the Smart Weather Sensor, so normally
the external device will be connected at the end of the cable included with the delivery, in the
control cabinet. As this cable is part of the measuring line care shall be taken when
designing the cabling to avoid parasitic coupling etc. The cable should be as short as
possible. In special cases, e.g. when the external sensor is mounted near to the Smart
Weather Sensor while the control cabinet is distant, the installation of an additional
distribution box should be considered.
The external sensor is connected to pins 5 and 6 of the connector plug, i.e. the grey and pink
wires of the standard cable.
All currently available sensors are unipolar, so the connection sequence is not relevant.
The Smart Weather Sensor must be configured for the selected type of external sensor
(temperature or precipitation) to enable the correct evaluation of the measurement data. The
selection of the sensor type is done through the UMB Config Tool.

Figure 38: Setting type
of external sensor

If the data from the channels of the sensor type currently not selected are requested, the
device will respond with “invalid channel”.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

18.1.2 External Temperature Sensor
All models of the WS family (except WS100-UMB) can be used with an external temperature
sensor.
For different application various types of NTC sensor are in supply:


WT1



WST1 for mounting in the road surface (road surface temperature)

for temperature acquisition of devices and surfaces

Mounting / installation of the temperature sensors is shown in the sensor manual.
18.1.3 External Rain Gauge
All models of the WS family without integrated precipitation detection can be used with an
external rain gauge. Models WS100-UMB, WS400-UMB, WS600-UMB, WS401-UMB,
WS601-UMB, WS700-UMB, WS800-UMB with R2S sensor resp. integrated tipping bucket
cannot be equipped with an external rain gauge.
The measurement values of the external rain gauge are on the same channels as the data of
the internal precipitation sensors of WS100-UMB, WS400-UMB, WS600-UMB, WS401-UMB,
WS601-UMB, WS700-UMB and WS800-UMB.
The external rain gauge WTB100 uses the same technology as the integrated rain gauge of
models WS401-UMB and WS601-UMB.
The resolution of the rain gauge WTB100 can be modified by the reduction ring delivered
with the sensor from 0.2mm to 0.5mm.
In principle, all rain sensors with bounce-free reed contact (normally open or normally
closed) and with a resolution of 0.1 mm, 0.2 mm, 0.5 mm or 1.0 mm can be used.
Note: To get the correct amount of rain this “mechanical” selection must be also be set in
Smart Weather Sensors configuration.
The setting is done with the UMB Config Tool by the same procedure as with WS401-UMB
and WS601-UMB (s. Chap.10.2.8).
The WS601/401-UMB’s advices for installation (Chap.7.3.4) and maintenance (Chap.12.1)
are as well valid for the external rain gauge.
Example with WS501-UMB and WTB100 without reduction ring:

Figure 39: Example
WS501-UMB and
WTB100

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Operating Manual

Smart Weather Sensor

19 Appendix
19.1 Channel List Summary
The channel assignment applies to online data requests in binary and ASCII protocol.
UMB Channel
act

min

Measuring Range

max

avg

special

Measurement Variable
(float32)

min

max

unit

°C

Temperatures
100

120

140

160

temperature

-50.0

60.0

105

125

145

165

temperature

-58.0

140.0

°F

external temperature

-40.0

80.0

°C

101
106

external temperature

-40.0

176.0

°F

110

130

150

170

dewpoint

-50.0

60.0

°C

115

135

155

175

dewpoint

-58.0

140.0

°F

111

wind chill temperature

-60.0

70.0

°C

116

wind chill temperature

-76.0

158.0

°F

114

wet bulb temperature

-50.0

60.0

°C

119

wet bulb temperature

-58.0

140.0

°F

112

wind heater temp.

-50.0

150.0

°C

113

R2S heater temp.

-50.0

150.0

°C

117

wind heater temp.

-58.0

302.0

°F

118

R2S heater temp.

-58.0

302.0

°F

Humidity
200

220

240

260

relative humidity

0.0

100.0

205

225

245

265

absolute humidity

0.0

1000.0

g/m³

210

230

250

270

mixing ratio

0.0

1000.0

g/kg

specific enthalpy

-100.0

1000.0

kJ/kg

Enthalpy
215

Pressure
300

320

340

360

abs. air pressure

300

1200

hPa

305

325

345

365

rel. air pressure

300

1200

hPa

air density

0.0

3.0

kg/m³

Air Density
310

Wind
vect. avg
400

420

440

460

480

wind speed

75.0

m/s

405

425

445

465

485

wind speed

270.0

km/h

410

430

450

470

490

wind speed

167.8

mph

415

435

455

475

495

wind speed

145.8

kts

401

wind speed fast

75.0

m/s

406

wind speed fast

270.0

km/h

411

wind speed fast

167.8

mph

416

wind speed fast

145.8

kts

403

wind speed standard deviation

75.0

m/s

413

wind speed standard deviation

167.8

mph

500

wind direction

359.9

501

520

540

580

wind direction fast

359.9

502

wind direction corr.

359,9

503

wind direction standard deviation

359.0

805

wind value quality

100.0

806

wind value quality (fast)

100.0

compass heading

359

Compass
510

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Operating Manual

Smart Weather Sensor

Precipitation Quantity

Range

Unit

600

float32

Precipitation Quantity - Absolute

0 … 100000

liters/m²

620

float32

Precipitation Quantity - Absolute

0 … 100000

640

float32

Precipitation Quantity - Absolute

0 … 3937

inches

660
605

float32
float32

Precipitation Quantity - Absolute
Precipitation Quantity - Differential

0 … 3937008
0 … 100000

mil
liters/m²

625

float32

Precipitation Quantity - Differential

0 … 100000

645

float32

Precipitation Quantity - Differential

0 … 3937

inches

665

float32

Precipitation Quantity - Differential

0 … 3937008

mil

Precipitation Type

0 = No precipitation
40 = unspecified precipitation
60 = Liquid precipitation, e.g. rain
70 = Solid precipitation, e.g. snow
WS100-UMB only:
67 = freezing rain
69 = sleet
90 = hail

Precipitation Type

700

uint7

Precipitation Intensity

Range

unit

800

float32

Precipitation Intensity

0 … 200.0

l/m²/h

820

float32

Precipitation Intensity

0 … 200.0

mm/h

840

float32

Precipitation Intensity

0 … 7.874

in/h

860

float32

Precipitation Intensity

0 … 7874

mil/h

Global Radiation
act

min

max

avg

900

920

940

960

max

avg

special

Measurement Variable (float32)

min

max

unit

Global Radiation

1400

W/m²

Measurement Variable (uint16)

min

max

unit

Lightning event (minute)

255

Lightning event (interval)

7650

10000

Supply Voltage V

0.0

50.0

11000

Rain Drop Volume µl

0.0

500.0

µl

Lightning Detection
act

min

sum

617
677

Service Channels

4100

4120

4140

4160

temperature

-50.0

60.0

°C

4105

4125

4145

4165

temperature

-58.0

140.0

°F

4600

Precipitation: total particles

4294967295

4601

Precipitation: total drops

4294967295

4602

Precipitation: drizzle particles

65535

4603

Precipitation: snow particles

65535

4604

Precipitation: hail particles

65535

4620

Precipitation: Drop class 0

65535

4621

Precipitation: Drop class 1

65535

4622

Precipitation: Drop class 2

65535

4623

Precipitation: Drop class 3

65535

4624

Precipitation: Drop class 4

65535

4625

Precipitation: Drop class 5

65535

4626

Precipitation: Drop class 6

65535

4627

Precipitation: Drop class 7

65535

4628

Precipitation: Drop class 8

65535

4629

Precipitation: Drop class 9

65535

4630

Precipitation: Drop class 10

65535

4631

Precipitation: Drop class 11

65535

Note: Which channels are actually available depends on the WSxxx-UMB type in use.

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

19.2 Channel List Summary per TLS2002 FG3
The following channels are available specifically for data requests for further processing in
TLS format. These channels are only available in the UMB-Binary protocol.

DE
Type

UMB
Meaning
Channel

Format Range

Resolution

Coding

1048

Result message
Air Temperature
LT

16 bit

-30 ...
+60°C

0.1°C

60.0
0.0
-0.1
-30.0

1053

Result message
Precipitation
Intensity NI

16 bit

0 ... 200
mm/h

0.1 mm/h

0.0
200.0

1054

Result message
Air Pressure LD

16 bit

800...1200 1 hPa
hPa

800
1200

= 800d = 0320h
= 1200d = 04B0h

1055

Result message
Relative Humidity
RLF

8 bit

10% ...
100%

1% RH

10%
100%

= 10d
= 100d

1056

Result message
Wind Direction
WR

16 bit

0 ... 359°

1°

0° (N)
= 0d
= 0000h
90° (O)
= 90d = 005Ah
180° (S) = 180d = 00B4h
270° (W) = 270d = 010Eh
FFFFh = not definable

1057

Result message
Wind Speed.
(average) WGM

16 bit

0.0 ... 60.0 0.1 m/s
m/s

0.0
60.0

= 0d
= 600d

= 0000h
= 0258h

1064

Result message
Wind Speed
(peak) WGS

16 bit

0.0 ... 60.0 0.1 m/s
m/s

0.0
60.0

= 0d
= 600d

= 0000h
= 0258h

1066

Result message
16 bit
Dewpoint
Temperature TPT

-30 ...
+60°C

60.0
0.0
-0.1
-30.0

1071

Result message
8 bit
Precipitation Type
NS

0.1°C

= 600d
= 0d
= -1d
= -300d

= 0258h
= 0000h
= FFFFh
= FED4h

= 0d
= 0000h
= 2000d = 07D0h

= 0Ah
= 64h

= 600d
= 0d
= -1d
= -300d

= 0258h
= 0000h
= FFFFh
= FED4h

0 = No precipitation
40 = unspecified precipitation
60 = Liquid precipitation, e.g. rain
70 = Solid precipitation, e.g. snow
WS100-UMB only:
67 = freezing rain
69 = sleet
90 = hail

Note: Which channels are actually available depends on the WSxxx-UMB type in use.
The previous channels 1153 and 1253 are no longer supported. Channels 840 and 860 can
be used in their place.

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Operating Manual

Smart Weather Sensor

19.3 Communication in Binary Protocol
Only one example of an online data request is described in this operating manual. Please
refer to the current version of the UMB Protocol for all commands and the exact mode of
operation of the protocol (available for download at www.lufft.com).
Note: Communication with the sensor takes place in accordance with the master-slave
principle, i.e. there may only be ONE requesting unit on a network.
19.3.1 Framing
The data frame is constructed as follows:
1

3-4

5-6

SOH STX

11 ... (8 + len)
optional

9 + len

10 + len
11 + len

12 + len

ETX

EOT

SOH
Control character for the start of a frame (01h); 1 byte

Header version number, e.g.: V 1.0  = 10h = 16d; 1 byte

Receiver address; 2 bytes

Sender address; 2 bytes

Number of data bytes between STX and ETX; 1 byte
STX
Control character for the start of payload transmission (02h); 1 byte

Command; 1 byte

Version number of the command; 1 byte

Data bytes; 0 – 210 bytes
ETX
Control character for the end of payload transmission (03h); 1 byte

Check sum, 16 bit CRC; 2 bytes
EOT
Control character for the end of the frame (04h); 1 byte
Control characters: SOH (01h), STX (02h), ETX (03h), EOT (04h).
19.3.2 Addressing with Class and Device ID
Addressing takes place by way of a 16 bit address. This breaks down into a Class ID and a
Device ID.
Address (2 bytes = 16 bit)
Bits 15 – 12 (upper 4 bits)
Class ID (0 to 15)
0 Broadcast
Smart Weather Sensor
7
(WS200-UMB – WS600-UMB)

Bits 11 – 8
(middle 4 bits)
Reserve

Bits 7 – 0 (lower 8 bits)
Device ID (0 – 255)
0
Broadcast
1 - 255

Available

15 Master or control devices

ID = 0 is provided as broadcast for classes and devices. Thus it is possible to transmit a
broadcast on a specific class. However this only makes sense if there is only one device of
this class on the bus; or in the case of a command, e.g. reset.

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Smart Weather Sensor

19.3.3 Examples for Creating Addresses
If, for example, you want to address WS400-UMB with the device ID 001, this takes place as
follows:
The class ID for the Smart Weather Sensor is 7d = 7h;
the device ID is e.g. 001d = 001h
Putting the class and device IDs together gives the address 7001h (28673d).
19.3.4 Example of a Binary Protocol Request
If, for example, a Smart Weather Sensor with the device ID 001 is to be polled from a PC for
the current temperature, this takes place as follows:
Sensor:
The class ID for the Smart Weather Sensors 7 = 7h;
The device ID is 001 = 001h
Putting the class and device IDs together gives a target address of 7001h.
PC:
The class ID for the PC (master unit) is 15 = Fh;
the PC ID is e.g. 001d = 01h.
Putting the class and device IDs together gives a sender address of F001h.
The length for the online data request command is 4d = 04h;
The command for the online data request is 23h;
The version number of the command is 1.0 = 10h.
The channel number is in ; as can be seen from the channel list (page 69), the
current temperature in °C in the channel is 100d = 0064h.
The calculated CRC is D961h.
The request to the device:
SOH

STX ETX

EOT
1
2
3
4
5
6
7
8
9
10
11
12
13 14 15
16
01h 10h 01h 70h 01h F0h 04h 02h
23h
10h
64h 00h 03h 61h D9h 04h

The response from the device:
SOH

STX
1
2
3
4
5
6
7
8
9
10
11
12
13
14
01h 10h 01h F0h 01h 70h 0Ah 02h
23h
10h
00h
64h 00h 16h

ETX

EOT
15 16 17 18 19
20 21
22
00h 00h B4h 41h 03h C6h 22h 04h

Interpretation of the response:

= 00h device o.k. (≠ 00h signifies error code; see page 74)

= Data type of the following value; 16h = float (4 bytes, IEEE format)

= 41B40000h as a float value corresponds to 22.5
The temperature is therefore 22.5°C.
The correct data transmission can be checked with the aid of the check sum (22C6h).
Note: Little Endian (Intel, low byte first) applies when transmitting word and float variables of
addresses or the CRC, for example. This means first the LowByte and then the HighByte.

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Operating Manual

Smart Weather Sensor

19.3.5 Status and Error Codes in Binary Protocol
If a measurement request delivers the 00h, the sensor is working correctly. You can
find a complete list of additional codes in the description of the UMB protocol.
Extract from list:

Description

00h (0d)

Command successful; no error; all o.k.

10h (16d)

Unknown command; not supported by this device

11h (17d)

Invalid parameter

24h (36d)

Invalid channel

28h (40d)

Device not ready; e.g. initialization / calibration running

50h (80d)

Measurement variable (+offset) is outside the set display range

51h (81d)
52h (82d)

Measurement value (physical) is outside the measuring range (e.g. ADC over range)

53h (83d)
54h (84d)

Error in measurement data or no valid data available

55h ( 85d)

Device / sensor is unable to execute valid measurement due to ambient conditions

19.3.6 CRC Calculation
CRC is calculated according to the following rules:
Norm:
CRC-CCITT
16
12
5
Polynomial:
1021h = x + x + x + 1 (LSB first mode)
Start value:
FFFFh
You can find further information in the description of a CRC calculation in UMB Protocol.
19.3.7 Data Request in Power Saving Mode 2
When in power saving mode2 the processor of the Smart Weather Sensor will be usually in
sleep state. For the acquisition of measurement data a certain command sequence and a
certain timing is required:


„Wake Up“ bei sending a , any character or any telegram (a telegram will
not be properly detected and get no response, because the UART is just starting)
 1000msec pause for the processor start up
 Activation of the measurement cycle by (any) valid telegram addressed to this
device
 2000msec pause for the execution of the measurement sequence
 Request of the measurement results
Example of a Request Sequence:
Command Data Request (0x23), Channel 100
No response
Wait 1 sec
Command Data Request (0x23), Channel 100
Discard data
Wait 2 sec
CommandMultiData Request (0x2F), Ch. 100, 200, 300, 620, 605, 700
Store data

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Operating Instructions

Smart Weather Sensor

19.4 Communication in ASCII Protocol
Note: UMB-ASCII protocol is not recommended for new projects. New features and
sensors will not be implemented for this protocol for devices newer than device
version 223 (WS100-UMB device version 04).
Text-based communication with devices is possible using ASCII protocol.
To do this, in the device configuration, interface settings, the protocol mode must be set to
ASCII (see page 33).
ASCII protocol is network-compatible and serves exclusively for online data requests. The
device will not respond to incomprehensible ASCII commands.
Note: The use of binary protocol is recommended for lengthy transmission routes (e.g.
network, GPRS/UMTS), as ASCII protocol is unable to detect transmission errors (not CRCsecured).
Note: TLS channels are not available in ASCII protocol.
19.4.1 Structure
An ASCII command is introduced by the ‘&’ character and completed by the CR (0Dh) sign.
There is a space character (20h) between the individual blocks in each case; this is
represented by an underscore character ‘_’. Characters that represent an ASCII value are in
ordinary inverted commas.
19.4.2 Summary of ASCII Commands
Command Function

Online data request

Switches to binary protocol

Triggers software reset



Software reset with delay



Device information

These operating instructions describe the online data request only. You can find the
description of the other commands in the UMB protocol.
19.4.3 Online Data Request (M)
Description: By way of this command, a measurement value is requested from a specific
channel.
5
5
Request:
‘&’_ _‘M’_ CR
5
5
5
Response: ‘$’_ _‘M’_ _ CR
5

Device address (5 decimal places with leading zeros)
5

Indicates the channel number (5 decimal places with leading zeros)
5

Measurement value (5 decimal places with leading zeros); a measurement
value standardized to 0 – 65520d. Various error codes are defined from
65521d – 65535d.
Example:
Request:
&_28673_M_00100
By way of this request, channel 100 of the device with address 28673 is interrogated (Smart
Weather Sensor with device ID 001).
Response: $_28673_M_00100_34785
This channel outputs a temperature from –50 to +60°C, which is calculated as follows:
0d
corresponds to -50°C
65520d
corresponds to +60°C
36789d
corresponds to [+60°C – (-50°C)] / 65520 * 34785 +(-50°C) = 8.4°C
Note: TLS channels are not available in ASCII protocol.

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Operating Manual

Smart Weather Sensor

19.4.4 Standardization of Measurement Values in ASCII Protocol
The standardization of measurement values from 0d – 65520d corresponds to the measuring
range of the respective measurement variable.
Measurement Variable

Measuring Range
Min

Max

Unit

-50.0

60.0

°C

-58.0

140.0

°F

-40.0

80.0

°C

-40.0

176.0

°F

-60.0

70.0

°C

-76.0

158.0

°F

0.0

100.0

0.0

1000.0

g/m³
g/kg

-100.0

1000.0

kJ/kg

300.0

1200.0

hPa

0.0

3.0

kg/m³

Temperature
Temperature
Dew point
Wet Bulb Temperature
External Temperature
Wind chill temperature
Humidity
Relative humidity
Absolute humidity
Mixing ratio
Specific Enthalpy
Pressure
Relative air pressure
Absolute air pressure
Air Density
air density
Wind
0.0

75.0

m/s

0.0

270.0

km/h

0.0

167.8

mph

0.0

145.8

kts

Wind direction

0.0

359.9

wind value quality

0.0

100.0

0.0

6552.0

litres / m²

0.0

6552.0

0.0

257.9

inches

0.0

257952.7

mil

0.0

655.2

litres / m²

0.0

655.2

0.0

25.79

inches

0.0

25795.2

mil

Wind speed

Rain

Quantity

Quantity since last request

Precipitation type

0 = No precipitation
40 = Precipitation
60 = Liquid precipitation, e.g. rain
70 = Solid precipitation, e.g. snow
WS100-UMB only:
67 = freezing rain
69 = sleet
90 = hail
0.0

200.0

l/m²/h

0.0

200.0

mm/h

0.0

7.874

in/h

0.0

7874

mil/h

Global Radiation
until device version .049 / .212

0.0

1400.0

W/m²

Global Radiation
from device version .050 / .213
(software version > v5.6)

0.0

2000.0

W/m²

Precipitation intensity

Global Radiation

Lightning Sensor

Lightning events (min)

255

Lightning events (interval)

7650

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Operating Instructions

Smart Weather Sensor

19.4.5 Error Codes in the ASCII Protocol
Various error codes are defined from 65521d – 65535d in addition to the standardisation for
the transmission of measurement values.

65521d
65523d
65524d
65525d
65526d
65534d
65535d

Description
Invalid Channel
Value Overflow
Value Underflow
Error in measurement data or no valid data available
Device / sensor is unable to execute valid measurement due to ambient conditions
Invalid Calibration
Unknown Error

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Operating Manual

Smart Weather Sensor

19.5 Communication in Terminal Mode
It is possible to communicate with a device in a very simple text-based manner using the
terminal mode.
To do this, in the device configuration, interface settings, the protocol mode must be set to
terminal (see page 33).
Note: In the case of communication in the terminal mode, only one single unit may be
connected to the interface, as this protocol is NOT network-compatible. It is used for very
simple measurement value requests.
Note: The use of binary protocol is recommended for lengthy transmission routes (e.g.
network, GPRS/UMTS), as it is not possible to detect transmission errors in terminal mode
(not CRC-secured).
Note: In the terminal mode, measurement values are not available in all units. Furthermore,
status and error messages are not transmitted.
19.5.1 Structure
A terminal consists of an ASCII character and a numeric character. The command is
completed with the sign. There is no echo on entry.
The individual values in the response are separated by a semi-colon (;). The response is
completed with .
An invalid terminal command is acknowledged with ‘FAILED’. Control commands are
acknowledged with ‘OK’.
The command to which the response relates is given at the beginning of each response.
Note: No response times are specified in the terminal mode.

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Operating Instructions

Smart Weather Sensor

19.5.2 Terminal Commands
The terminal commands transmit the following values or have the following functions:
E0

Temperature in °C
Dew point temperature in °C
Wind chill temperature in °C
Relative humidity in %
Relative air pressure in hPa
Wind speed in m/s
Wind direction in °
Precipitation quantity in mm
Precipitation type
Precipitation intensity in mm/h
Temperature in °F
Dew point temperature in °F
Wind chill temperature in °F
Relative humidity in %
Relative air pressure in hPa
Wind speed in mph
Wind direction in °
Precipitation quantity in inches
Precipitation type
Precipitation intensity in inches/h
Act. wind speed in m/s
Min. wind speed in m/s
Max. wind speed in m/s
Avg. wind speed in m/s
Vct. wind speed in m/s
Act. wind direction in °
Min. wind direction in °
Max. wind direction in °
Vct. wind direction in °
Act. wind speed in mph
Min. wind speed in mph
Max. wind speed in mph
Avg. wind speed in mph
Vct. wind speed in mph
Act. wind direction in °
Min. wind direction in °
Max. wind direction in °
Vectorial wind direction in °
Act. Compass heading in °
Act. Global Radiation in W/m²
Min. Global Radiation in W/m²
Max. Global Radiation in W/m²
Avg. Global Radiation in W/m²
Act. Specific Enthalpy in KJ/Kg
Act. Wet Bulb Temperature in °C
Act. Wet Bulb Temperature in °F
Act. Air Density in kg/m³
reserved
reserved
external temperature (act) °C
external temperature (act) °F
lightning events (min)
lightning events (interval)

Ta
Tp
Tw
Hr
Pa
Sa
Da
Ra
Rt
Ri
Ta
Tp
Tw
Hr
Pa
Sa
Da
Ra
Rt
Ri
Sa
Sn
Sx
Sg
Sv
Da
Dn
Dx
Dv
Sa
Sn
Sx
Sg
Sv
Da
Dn
Dx
Dv
Ca
Ga
Gn
Gx
Gg
Ea
Ba
Ba
Ad
La
Lb
Te
Te
Lm
Li

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

C
C
C
P
H
M
D
M
N
M
F
F
F
P
H
S
D
I
N
I
M
M
M
M
M
D
D
D
D
S
S
S
S
S
D
D
D
D
D
W
W
W
W
J
C
F
G
X
X
C
F
E
E

(Channel 100)
(Channel 110)
(Channel 111)
(Channel 200)
(Channel 305)
(Channel 400)
(Channel 500)
(Channel 620)
(Channel 700)
(Channel 820)
(Channel 105)
(Channel 115)
(Channel 116)
(Channel 200)
(Channel 305)
(Channel 410)
(Channel 500)
(Channel 640)
(Channel 700)
(Channel 840)
(Channel 400)
(Channel 420)
(Channel 440)
(Channel 460)
(Channel 480)
(Channel 500)
(Channel 520)
(Channel 540)
(Channel 580)
(Channel 410)
(Channel 430)
(Channel 450)
(Channel 470)
(Channel 490)
(Channel 500)
(Channel 520)
(Channel 540)
(Channel 580)
(Channel 510)
(Channel 900)
(Channel 920)
(Channel 940)
(Channel 960)
(Channel 215)
(Channel 114)
(Channel 119)
(Channel 310)
(Channel 710)
(Channel 711)
(Channel 101)
(Channel 106)
(Channel 617)
(Channel 677)

Operating Manual

Smart Weather Sensor
E9*

precipitation total particles
precipitation total drops
precipitation drizzle particles
precipitation snow particles
precipitation hail particles
precipitation drop class 0
precipitation drop class 1
precipitation drop class 2
precipitation drop class 3
precipitation drop class 4
precipitation drop class 5
precipitation drop class 6
precipitation drop class 7
precipitation drop class 8
precipitation drop class 9
precipitation drop class 10
precipitation drop class 11

Displays the same values as Ex, but without additional information such as the
measurement variable and unit
Serial number; date of manufacture; project number; parts list version;
SPLAN version; hardware version; firmware version; E2 version; device version
Outputs the device description

R0
R1

Executes a device reset
Resets the accumulated rain quantity and executes a device reset

Temporarily switches to UMB binary protocol

Tt
Td
Dr
Sn
Ha
C0
C1
C2
C3
C4
C5
C6
C7
C8
C9
C10
C11

(Channel 4600)
(Channel 4601)
(Channel 4602)
(Channel 4603)
(Channel 4604)
(Channel 4620)
(Channel 4621)
(Channel 4622)
(Channel 4623)
(Channel 4624)
(Channel 4625)
(Channel 4626)
(Channel 4627)
(Channel 4628)
(Channel 4629)
(Channel 4630)
(Channel 4631)

*) Command E9/M9 is only supported by WS100-UMB

Examples:
E0
M0
E2
M2
I0
R0

E0;Ta+024.9C;Tp+012.2C;Tw+026.8C;Hr+045.0P;Pa+0980.6H;
Sa+005.1M;Da+156.6D;Ra+00042.24M;Rt+060N;Ri+002.6M;
M0;+024.9;+012.2;+026.8;+045.0;+0980.6;
+005.1;+156.6;+00042.24;+060;+002.6;
E2;Sa+005.1M;Sn+001.1M;Sx+007.1M;Sg+005.1M;Sv+005.0M;
Da+156.6D;Dn+166.6D;Dx+176.6D;Dv+156.6D;
M2;+005.1;+001.1;+007.1;+005.1;+005.0;
+156.6;+166.6;+176.6;+156.6;
I0;001;0109;0701;004;005;001;016;011;00002;
R0;OK;

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6 Communication in SDI-12 Mode
The communication in the SDI-12 mode of the Smart Weather Sensor is conforming to the
standard defined in ‚SDI-12 A Serial-Digital Interface Standard for Microprocessor-Based
Sensors Version 1.3 January 12, 2009‘ . The device may be operated in bus mode together
with other SDI-12 sensors, connected to one SDI master (logger).
19.6.1 Preconditions for SDI-12 Operation
As the interface settings defined in the SDI-12 standard are significantly different from the
UMB default settings the related parameters have to be set properly by the UMB Config Tool
(latest version!).
The protocol mode of the device has to be set to “SDI-12”. This will automatically set the
baud rate to 1200.

Figure 40: Sensor
Configuration SDI-12

Measurement data can be transmitted alternatively in metric or US units. The selection is
done by the UMB Config Tool.

Figure 41: Sensor
Configuration SDI-12
Units

Metric units

US units

Note: Please observe drawings on next page and notes on page 27 when connecting a
SDI12 data logger!

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Operating Manual

Smart Weather Sensor

When operating the device in SDI-12 mode it is basically no more possible to access the
device with the UMB Config Tool, due to the different interface parameter settings. To enable
configuration access nevertheless the interface is operated in standard UMB mode (19200
8N1) for the first 5 seconds(*) after reset / power on. During this time the UMB device ID, if
unequal 1, is set to 200, so access will be possible even if the device ID is unknown. If a
valid UMB telegram is received within this 5 sec, the device will stay in UMB mode for the
configured time out (several minutes) so that the configuration can be modified.


Connect the PC to the Smart Weather Sensor through an RS-485 converter



Start the UMB Config Tool and create a WSxxx-UMB with the address (1 or 200) of
the actual device and activate at least one sensor. Start the measurement (will
report connection error at first)



Reset the device (Power off / on)



When measurement values are received the measurement can be terminated, the
interface is now open for configuration.

(*) Remark: The 5 seconds UMB communication are available from program start. Under
consideration of the operating system start, where no communication is possible, the device
will be ready for SDI12 requests after 7.0 – 7.5 seconds.
This timing only applies in case of cold start after power on or reset. This phase will not
occur after “wake up” in Power Saving Mode 2. In this case the device will respond within the
time defined by the SDI12 standard.

Figure. 42: Connecting
to a logger with
integrated power supply

Figure. 43: Connecting
to a logger and a
separate power supply
up to device version
41

Figure. 44: Connecting
to a logger and a
separate power supply
device version 42 and
newer

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Operating Instructions

Smart Weather Sensor

19.6.2 Command Set
For details of the SDI-12 protocol please refer to the above mentioned standard document.
Following commands are available for devices of the WS family:
Note: The examples in the following sections use italics to print the requests from the logger
(0V!)
Command

Function

Address search (Wildcard request, one device only on bus!)

Request device active?

aI!

Request device identification

aAb!

Address change to b ( 0 … 9, A …Z, a … z)

aM!

Measurement basic minimal data set

aM1!

Measurement temperatures

aM2!

Measurement humidity

aM3!

Measurement air pressure

aM4!

Measurement wind

aM5!

Measurement compass

aM6!

Measurement precipitation

aM7!

Measurement global radiation

aM8!

Measurement external temperature

aMC!

Measurement, basic minimal data set, transmit values with CRC

aMC1! ...
aMC8!
aC!
aC1! ...
aC8!
aCC!
aCC1! ...
aCC8!

Measurement (assignment of values as for aMn! commands),
transmit values with CRC
Concurrent measurement, full basic data set
Concurrent measurement, assignment of values as for aMn!
commands, partly extended data sets
Concurrent measurement, transmit values with CRC
Concurrent measurement, assignment of values as for aMn!
commands, partly extended data sets, transmit values with CRC

aD0!

Data request buffer 0

aD1!

Data request buffer 1

aD2!

Data request buffer 2

aD3!

Data request buffer 3

aD4!

Data request buffer 4

aR0!

Data request from continuous measurement, data set 0

aR1!

Data request from continuous measurement, data set 1

aR2!

Data request from continuous measurement, data set 2

aR3!

Data request from continuous measurement, data set 3

aR4!

Data request from continuous measurement, data set 4

aRC0!

Data request from continuous measurement, data set 0 with CRC

aRC1!

Data request from continuous measurement, data set 1 with CRC

aRC2!

Data request from continuous measurement, data set 2 with CRC

aRC3!

Data request from continuous measurement, data set 3 with CRC

aRC4!

Data request from continuous measurement, data set 4 with CRC

aV!

Command verification: Evaluate sensor status and heating
temperatures, data request with aD0!, aD1!

aXU! Change the unit system for SDI data
aXH+nnnn! Set local altitude of the device for calculation of rel. air pressure

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Operating Manual

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Command

Function

aXD+nnn.n!

Set local compass deviation

aXL!

Set power saving mode

aXMn!

Set the heating mode of the device

aXA+nn! Integration time for average and min/max evaluation
aXC!

Clear the abs. precipitation amount ( includes a device reset)

aXR!

Device reset

The composition of the minimal and the full basic data set depends on the variant (WS100UMB ... WS800-UMB) of the device in question (see below). The same applies to the
availability of the additional measurement commands (aM1!, aC1! etc.)
Due the applied measurement processes the devices of the WS family will, different from
other sensors described in the SDI-12 document, in normal operation mode always
measure continuously. This causes some special properties while in this mode:



The device does not need a “Wakeup” and does not have a sleep mode. So the
reactions to “Break” signals and any related timings are inapplicable. “Break” will be
ignored by WS devices.



Data requested with M- or C- commands are always available immediately. The
device will always respond with a000n resp. a000nn. This means the device will not
send any service request and will ignore measurement abort signals. The logger
should request the data immediately.



M- and C- command only differ in the number of values made available in the buffers
(in both cases the maximum permitted by the standards of 9 resp. 20).



We recommend to use the commands for continuous measurement (R-commands)
to request the data.



When in power saving mode 2 the device will wake up by a „Break“ signal. Other
functions of the „Break“ signal are not implemented.



When in power saving mode 2 the device responds to M or C commands with
a002n resp. a002nn and holds the data available within 2 seconds. It will not send a
service request, signals to abort the measurement are ignored.



For the reduced data set in power saving mode 2 a unified data buffer structure for
all device models has been defined. Depending on the individual model unused
channels will be set to the “invalid” marker 999.9.

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Operating Instructions

Smart Weather Sensor

19.6.3 Address Configuration
UMB Device-ID and SDI-12 Address are connected, but the different address ranges and the
fact, that UMB ID’s are integer numbers, while SDI-12 addresses are ASCII characters, have
to be considered.
The SDI-12 address is built from the UMB device ID as follows:
UMB Device ID 1 (default) corresponds to SDI-12 Address ‘0’ (SDI-12 default).
Changing the SDI12 address by SDI12 setting command also modifies the UMB device ID
accordingly.
Valid Address Ranges:
UMB (dec)

SDI-12 (ASCII)

‘0’

‘9’

‘A’

‘Z’

‘a’

‘z’

19.6.4 Data Messages
In the interest of simplified evaluation the assignment of measurement values to data buffers
‘0’ ... ‘9’ has been defined unified for all measurement commands. For this reason the
responses to C-requests have been restricted to 35 characters, not using the 75 characters
permitted for these requests
Currently buffers ‘0’ to ‘4’ are in use.
As with M-requests max. 9 values may be transmitted; the base data set of 9 values has
been assigned to buffers ‘0’ and ‘1’. Buffers ‘2’ to ‘4’ contain further measurement values.
This definition guaranties the compatibility to loggers designed according to older versions of
the SDI-12 standard.
The buffer assignment depends on the device variant (WS100-UMB ... WS800-UMB).
The complete set of measurement values, as defined for the UMB protocol has been made
available also in the SDI-12 environment. They can be accessed using the additional M and
C commands (aM1! ... aM8!, aMC1! ... aMC8!, aC1! ... aC8!, aCC1! ... aCC8!) (see below).
If the measurement value is not available for some reason, e.g. sensor failure, this is
indicated by a value of +999.0. or -999.9 The logger can then evaluate the reason of failure
by a aV! Verification request. The following tables show the measurement values in the
sequence they are arranged in the telegram (see example).
Depending on the configuration of the device the values will be transmitted in metric or US
units.
Note: The configured system of units is not indicated in the data messages. The logger may
request this setting with the I-command and adjust the evaluation of the data messages
accordingly
Example: M Request from a WS600-UMB
0M!
00009
0D0!
0+13.5+85.7+1017.0+2.5+3.7

9 measurement values are available

Air temperature 13.5°C, rel. humidity 85.7%, rel. air pressure 1017hPa
avg. wind speed 2.5m/s, max wind speed 3.7m/s.

0D1!
0+43.7+9.8+60+4.4
Wind direction 43.7° wet bulb temperature 9.8°C,
type of precipitation 60 (rain), precipitation intensity 4.4mm/h

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Example: C Request from a WS600-UMB
0M!
000020
0D0!
0+13.5+85.7+1017+2.5+3.7

20 measurement values are available

air temperature 13.5°C, rel. humidity 85.7%, rel. air pressure 1017hPa
avg. wind speed 2.5m/s, max wind speed 3.7m/s.

0D1!
0+43.7+9.8+60+4.4
wind direction 43.7° wet bulb temperature 9.8°C,
type of precipitation 60 (rain), precipitation intensity 4.4mm/h

0D2!
0+11.2+10.3+1.10
dewpoint 11.2°C, wind chill temperature 10,3°C
diff. precipitation 1.10mm

0D3!
0+3.2+0.0+3.5+100.0
act. wind speed 3,2m/s, min. wind speed 0.0 m/s
vect. avg. wind speed 3.5m/s, quality of wind values 100%

0D4!
0+43.7+41.3+45.7+29.3
act. wind direction 43,7°, min. wind direction 41,3°,
max. wind direction 45,7°, specific enthalpy29,3kJ/kg

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Operating Instructions

Smart Weather Sensor

19.6.4.1 Buffer assignment Basic Data Set WS600-UMB / WS700-UMB / WS800-UMB
Device configured for measurement values in metric units:
Measurement value

UMB
Channel

Min

Max

Unit

Air temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

460

0.0

75.0

m/s

Wind Speed (max)

440

0.0

75.0

m/s

Wind Direction (vct)

580

0.0

359.9

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Precipitation Type

700

0, 60, 70

Precipitation Intensity

820

0.0

200.0

mm/h

Dew Point (act)

110

-50.0

60.0

°C

Wind chill Temperature (act)

111

-60.0

70.0

°C

Amount of Precip. difference

625

0.00

100000.00

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’
Wind Speed (act)

400

0.0

75.0

m/s

Wind Speed (min)

420

0.0

75.0

m/s

Wind Speed (vct)

480

0.0

75.0

m/s

Wind Quality

805

0.0

100.0

Wind Direction (act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘4’

Example: Request Buffer ‘0’
0D0!
0+13.5+85.7+2.5+3.7
Air Temperature 13.5°C, rel. Humidity 85.7%, average wind speed 2.5m/s, peak wind speed 3.7m/s

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Operating Manual

Smart Weather Sensor

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

470

0.0

167.8

mph

Wind Speed (max)

450

0.0

167.8

mph

Wind Direction (vct)

580

0.0

359.9

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Precipitation Type

700

0, 60, 70

Precipitation Intensity

840

0.000

7.874

in/h

Dew Point (act)

115

-58.0

140.0

°F

Wind chill Temperature (act)

116

-76.0

158.0

°F

Amount of Precip. difference

645

0.0000

3937.0000

Wind Speed (act)

410

0.0

167.8

mph

Wind Speed (min)

430

0.0

167.8

mph

Wind Speed (vct)

490

0.0

167.8

mph

Wind Quality

805

0.0

100.0

Wind Direction(act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’

Buffer ‘4’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.4.2 Buffer Assignment Basic Data Set WS500-UMB
Device configured for measurement values in metric units:
Measurement value

UMB
Channel

Min

Max

Unit

Air temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

460

0.0

75.0

m/s

Wind Speed (max)

440

0.0

75.0

m/s

Wind Direction (vct)

580

0.0

359.9

Wet Bulb Temperature (act)

114

0.0

359.9

°C

Dew Point (act)

110

-50.0

60.0

°C

Wind chill Temperature (act)

111

-60.0

70.0

°C

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’
Wind Speed (act)

400

0.0

75.0

m/s

Wind Speed (min)

420

0.0

75.0

m/s

Wind Speed (vct)

480

0.0

75.0

m/s

Wind Quality

805

0.0

100.0

Wind Direction (act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘3’

Example: Request Buffer ‘0’
0D0!
0+13.5+85.7+2.5+3.7
Air Temperature 13.5°C, rel. Humidity 85.7%, average wind speed 2.5m/s, peak wind speed 3.7m/s

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

470

0.0

167.8

mph

Wind Speed (max)

450

0.0

167.8

mph

Wind Direction (vct)

580

0.0

359.9

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Dew Point (act)

115

-58.0

140.0

°F

Wind chill Temperature (act)

116

-76.0

158.0

°F

Wind Speed (act)

410

0.0

167.8

mph

Wind Speed (min)

430

0.0

167.8

mph

Wind Speed (vct)

490

0.0

167.8

mph

Wind Quality

805

0.0

100.0

Wind Direction(act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.4.3 Buffer Assignment Basic Data Set WS400-UMB

Device configured for measurement in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100,0

Dew Point (act)

110

-50.0

60.0

°C

Abs. Air Pressure(act)

300

300.0

1200.0

hPa

Rel. Air Pressure (act)

305

300.0

1200.0

hPa

Precipitation Type

700

0, 60, 70

Precipitation Intensity

820

0.0

200.0

mm/h
mm

Buffer ‘0’

Buffer ‘1’

Amount of Precip. Difference

625

0.00

100000.00

Amount of Precip. Absolute

620

0.0

100000.0

Air Temperature (min)

120

-50.0

60.0

°C

Air Temperature (max)

140

-50.0

60.0

°C

Air Temperature (avg)

160

-50.0

60.0

°C

Rel. Humidity (min)

220

0.0

100.0

Rel. Humidity (max)

240

0.0

100.0

Buffer ‘2’

Buffer ‘3’
Rel. Humidity (avg)

260

0.0

100.0

Rel. Air Pressure(min)

325

300.0

1200.0

hPa

Rel. Rel. Humidity (max)

345

300.0

1200.0

hPa

Rel. Rel. Humidity (avg)

365

300.0

1200.0

hPa

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Example: Request Buffer ‘0’
0D0!
0+13.5+85.7+11.2+1017.0+1001.0
Air temperature 13.5°C, rel. humidity 85.7%, dew point 11.2°C, rel. air pressure 1017.0hPa, abs. pressure
1001.0hPa

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Device configured for measurement in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Dew Point (act)

115

-58.0

14.0

°F

Abs. Air Pressure(act)

300

300.0

1200.0

hPa

Rel. Air Pressure (act)

305

300.0

1200.0

hPa

Precipitation Type

700

0, 60, 70

Precipitation Intensity

840

0.000

7.874

in/h

Amount of Precip. Difference

645

0.0000

3937.0000

Amount of Precip. Absolute

640

0.000

3937.000

Air Temperature (min)

125

-58.0

140.0

°F

Air Temperature (max)

145

-58.0

140.0

°F

Air Temperature (avg)

165

-58.0

140.0

°F

Rel. Humidity (min)

220

0.0

100.0

Rel. Humidity (max)

240

0.0

100.0

Rel. Humidity (avg)

260

0.0

100.0

Rel. Air Pressure(min)

325

300.0

1200.0

hPa

Rel. Rel. Humidity (max)

345

300.0

1200.0

hPa

Rel. Rel. Humidity (avg)

365

300.0

1200.0

hPa

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Specific Enthalpy

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.4.4 Buffer Assignment Basic Data Set WS300-UMB

Device configured for measurement in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100.0

Dew Point (act)

110

-50.0

60.0

°C

Abs. Air Pressure(act)

300

300.0

1200.0

hPa

Rel. Air Pressure (act)

305

300.0

1200.0

hPa

Air Temperature (min)

120

-50.0

60.0

°C

Air Temperature (max)

140

-50.0

60.0

°C

Air Temperature (avg)

160

-50.0

60.0

°C

Rel. Humidity (avg)

260

0.0

100.0

Rel. Humidity (min)

220

0.0

100,0

Rel. Humidity (max)

240

0.0

100,0

Rel. Air Pressure (min)

325

300.0

1200.0

hPa

Rel. Air Pressure (max)

345

300.0

1200.0

hPa

Rel. Air Pressure (avg)

365

300.0

1200.0

hPa

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’
Abs. Humidity (min)

225

0.0

1000.0

g/m³

Abs. Humidity (max)

245

0.0

1000.0

g/m³

Abs. Humidity (avg)

265

0.0

1000.0

g/m³

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘4’

Example: Request buffer ‘0’
0D0!
0+13.5+85.7+11.2+1017.0+1001.0
Air temperature 13.5°C, rel. humidity 85.7%, dew point 11.2°C, rel. air pressure 1017.0hPa, abs. pressure
1001.0hPa

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Device configured for measurement in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Dew Point (act)

115

-58.0

140.0

°F

Abs. Air Pressure(act)

300

300.0

1200.0

hPa

Rel. Air Pressure (act)

305

300.0

1200.0

hPa

Air Temperature (min)

125

-58.0

140.0

°F

Air Temperature (max)

145

-58.0

140.0

°F

Air Temperature (avg)

165

-58.0

140.0

°F

Rel. Humidity (avg)

260

0.0

100.0

Rel. Humidity (min)

220

0.0

100,0

Rel. Humidity (max)

240

0.0

100,0

Rel. Air Pressure (min)

325

300.0

1200.0

hPa

Rel. Air Pressure (max)

345

300.0

1200.0

hPa

Rel. Air Pressure (avg)

365

300.0

1200.0

hPa

Abs. Humidity (min)

225

0.0

1000.0

g/m³

Abs. Humidity (max)

245

0.0

1000.0

g/m³

Abs. Humidity (avg)

265

0.0

1000.0

g/m³

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’

Buffer ‘4’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.4.5 Buffer Assignment Basic Data Set WS200-UMB

Device configured for measurement values in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Wind Speed (avg)

460

0.0

75.0

m/s

Wind Speed (max)

440

0.0

75.0

m/s

Wind Direction (vct)

580

0.0

359.9

Wind Direction (act)

500

0.0

359.9

Compass Heading(act)

510

0.0

359.0

Wind Speed (act)

400

0.0

75.0

m/s

Wind Speed (min)

420

0.0

75.0

m/s

Wind Speed (vct)

480

0.0

75.0

m/s

Wind Quality

805

0.0

100.0

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Wind Direction corr. (act)

502

0.0

359.9

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Example: Request Buffer ‘0’
0D0!
0+2.5+3.7+45.5+37.8+10.3
Avg. wind speed 2.5m/s, peak wind speed 3.7m/s, avg wind direction (vect.) 45.5°, wind direction (act.) 37.8°,
compass heading 10.3°

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Wind Speed (avg)

470

0.0

167.8

mph

Wind Speed (max)

450

0.0

167.8

mph

Wind Direction (vct)

580

0.0

359.9

Wind Direction (act)

500

0.0

359.9

Compass Heading(act)

510

0.0

359.0

Wind Speed (act)

410

0.0

167.8

mph

Wind Speed (min)

430

0.0

167.8

mph

Wind Speed (vct)

490

0.0

167.8

mph

Wind Quality

805

0.0

100.0

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Wind Direction corr. (act)

502

0.0

359.9

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.4.6 Buffer Assignment Basic Data Set WS100-UMB
Device configured for measurement values in metric units
Measurement Value

UMB
Channel

Min

Max

Unit

Amount of Precip. absolute

620

0,0

100000,0

Amount of Precip. difference

625

0,00

100000,00

Precipitation Intensity

820

0,0

200,0

mm/h

Precipitation Type

700

0, 60, 70 (67, 69, 90)*

Buffer ‘0’

)* additional precipitation types: WS100-UMB only
Example: Request Buffer ‘0’
0D0!
0+23.5+0.2+3.2+60
Precipitation abs. 23,5mm, precipitation difference 0,2mm, precipitation intensity 3,2mm/h, precipitation type 60
(rain)

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Amount of Precip. absolute

640

0,000

3937,000

Amount of Precip. difference

645

0,0000

3937,0000

Precipitation Intensity

840

0,000

7,874

in/h

Precipitation Type

700

0, 60, 70 (67, 69, 90)*

Buffer ‘0’

)* additional precipitation types: WS100-UMB only

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

19.6.4.7 Buffer Assignment Basic Data Set WS501-UMB, WS502-UMB, WS503-UMB,
WS504-UMB, WS510-UMB
Device configured for measurement values in metric units:
Measurement value

UMB
Channel

Min

Max

Unit

Air temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

460

0.0

75.0

m/s

Wind Speed (max)

440

0.0

75.0

m/s

Wind Direction (vct)

580

0.0

359.9

Global Radiation (act)

900

0.0

2000.0 *)

W/m²

Dew Point (act)

110

-50.0

60.0

°C

Wind Chill Temperature (act)

111

-60.0

70.0

°C

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’
Wind Speed (act)

400

0.0

75.0

m/s

Wind Speed (min)

420

0.0

75.0

m/s

Wind Speed (vct)

480

0.0

75.0

m/s

Wind Quality

805

0.0

100.0

Wind Direction (act)

500

0.0

359.9

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Global Radiation (min)

920

0.0

2000.0 *)

W/m²

Global Radiation (max)

940

0.0

2000.0 *)

W/m²

Global Radiation (avg)

960

0.0

2000.0 *)

W/m²

Buffer ‘3’

Buffer ‘4’

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

Example: Request Buffer ‘0’
0D0!
0+13.5+85.7+2.5+3.7
Air Temperature 13.5°C, rel. Humidity 85.7%, average wind speed 2.5m/s, peak wind speed 3.7m/s

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

470

0.0

167.8

mph

Wind Speed (max)

450

0.0

167.8

mph

Wind Direction (vct)

580

0.0

359.9

Global Radiation (act)

900

0.0

2000.0 *)

W/m²

Dew Point (act)

115

-58.0

140.0

°F

Windchill Temperature (act)

116

-76.0

158.0

°F

Wind Speed (act)

410

0.0

167.8

mph

Wind Speed (min)

430

0.0

167.8

mph

Wind Speed (vct)

490

0.0

167.8

mph

Wind Quality

805

0.0

100.0

Wind Direction(act)

500

0.0

359.9

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’

Buffer ‘4’
Global Radiation (min)

920

0.0

2000.0 *)

W/m²

Global Radiation (max)

940

0.0

2000.0 *)

W/m²

Global Radiation (avg)

960

0.0

2000.0 *)

W/m²

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Manual

Smart Weather Sensor

19.6.4.8 Buffer Assignment Basic Data Set WS301-UMB, WS302-UMB, WS303-UMB,
WS304-UMB, WS310-UMB
Device configured for measurement in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100.0

Dew Point (act)

110

-50.0

60.0

°C

Global Radiation(act)

900

0.0

2000.0 *)

W/m²

Rel. Air Pressure (act)

305

300.0

1200.0

hPa

Air Temperature (min)

120

-50.0

60.0

°C

Air Temperature (max)

140

-50.0

60.0

°C

Air Temperature (avg)

160

-50.0

60.0

°C

Rel. Humidity (avg)

260

0.0

100.0

Rel. Humidity (min)

220

0.0

100,0

Rel. Humidity (max)

240

0.0

100,0

Rel. Air Pressure (min)

325

300.0

1200.0

hPa

Rel. Air Pressure (max)

345

300.0

1200.0

hPa

Rel. Air Pressure (avg)

365

300.0

1200.0

hPa

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’
Abs. Humidity (act)

205

0.0

1000.0

g/m³

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘4’
Global Radiation (min)

920

0.0

2000.0 *)

W/m²

Global Radiation (max)

940

0.0

2000.0 *)

W/m²

Global Radiation (avg)

960

0.0

2000.0 *)

W/m²

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

Example: Request buffer ‘0’
0D0!
0+13.5+85.7+11.2+1017.0+780.0
Air temperature 13.5°C, rel. humidity 85.7%, dew point 11.2°C, rel. air pressure 1017.0hPa, global radiation
780.0W/m²

100

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Device configured for measurement in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Dew Point (act)

115

-58.0

140.0

°F

Global Radiation(act)

900

0.0

2000.0 *)

W/m²

Rel. Air Pressure (act)

305

300.0

1200.0

hPa

Air Temperature (min)

125

-58.0

140.0

°F

Air Temperature (max)

145

-58.0

140.0

°F

Air Temperature (avg)

165

-58.0

140.0

°F

Rel. Humidity (avg)

260

0.0

100.0

Rel. Humidity (min)

220

0.0

100,0

Rel. Humidity (max)

240

0.0

100,0

Rel. Air Pressure (min)

325

300.0

1200.0

hPa

Rel. Air Pressure (max)

345

300.0

1200.0

hPa

Rel. Air Pressure (avg)

365

300.0

1200.0

hPa

Abs. Humidity (act)

205

0.0

1000.0

g/m³

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Buffer ‘3’

Buffer ‘4’
Global Radiation (min)

920

0.0

2000.0 *)

W/m²

Global Radiation (max)

940

0.0

2000.0 *)

W/m²

Global Radiation (avg)

960

0.0

2000.0 *)

W/m²

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

101

Operating Manual

Smart Weather Sensor

19.6.4.9 Buffer assignment Basic Data Set WS601-UMB
Device configured for measurement values in metric units:
Measurement value

UMB
Channel

Min

Max

Unit

Air temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

460

0.0

75.0

m/s

Wind Speed (max)

440

0.0

75.0

m/s

580

0.0

359.9

Precipitation Type

700

0, 40

Precipitation Intensity

820

0.0

200.0

mm/h

Dew Point (act)

110

-50.0

60.0

°C

Wind chill Temperature (act)

111

-60.0

70.0

°C

Amount of Precip. difference

625

0.00

100000.00

Buffer ‘0’

Buffer ‘1’
Wind Direction (vct)
reserved

Buffer ‘2’

Buffer ‘3’
Wind Speed (act)

400

0.0

75.0

m/s

Wind Speed (min)

420

0.0

75.0

m/s

Wind Speed (vct)

480

0.0

75.0

m/s

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Wind Direction (act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘4’

Example: Request Buffer ‘0’
0D0!
0+13.5+85.7+2.5+3.7
Air Temperature 13.5°C, rel. Humidity 85.7%, average wind speed 2.5m/s, peak wind speed 3.7m/s

102

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Rel. Air Pressure

305

300.0

1200.0

hPa

Wind Speed (avg)

470

0.0

167.8

mph

Wind Speed (max)

450

0.0

167.8

mph

580

0.0

359.9

Precipitation Type

700

0, 40

Precipitation Intensity

840

0.000

7.874

in/h

Dew Point (act)

115

-58.0

140.0

°F

Wind chill Temperature (act)

116

-76.0

158.0

°F

Amount of Precip. difference

645

0.0000

3937.0000

Wind Speed (act)

410

0.0

167.8

mph

Wind Speed (min)

430

0.0

167.8

mph

Wind Speed (vct)

490

0.0

167.8

mph

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Wind Direction(act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

Buffer ‘1’
Wind Direction (vct)
reserved

Buffer ‘2’

Buffer ‘3’

Buffer ‘4’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

103

Operating Manual

Smart Weather Sensor

19.6.4.10 Buffer Assignment Basic Data Set WS401-UMB

Device configured for measurement in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100,0

Dew Point (act)

110

-50.0

60.0

°C

305

300.0

1200.0

hPa

Precipitation Type

700

0, 40

Precipitation Intensity

820

0.0

200.0

mm/h
mm

Buffer ‘0’

reserved
Rel. Air Pressure (act)
Buffer ‘1’

Amount of Precip. Difference

625

0.00

100000.00

Amount of Precip. Absolute

620

0.0

100000.0

Air Temperature (min)

120

-50.0

60.0

°C

Air Temperature (max)

140

-50.0

60.0

°C

Air Temperature (avg)

160

-50.0

60.0

°C

Rel. Humidity (min)

220

0.0

100.0

Rel. Humidity (max)

240

0.0

100.0

Buffer ‘2’

Buffer ‘3’
Rel. Humidity (avg)

260

0.0

100.0

Rel. Air Pressure(min)

325

300.0

1200.0

hPa

Rel. Rel. Humidity (max)

345

300.0

1200.0

hPa

Rel. Rel. Humidity (avg)

365

300.0

1200.0

hPa

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Example: Request Buffer ‘0’
0D0!
0+13.5+85.7+11.2+1017.0+1001.0
Air temperature 13.5°C, rel. humidity 85.7%, dew point 11.2°C, rel. air pressure 1017.0hPa, abs. pressure
1001.0hPa

104

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Device configured for measurement in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Dew Point (act)

115

-58.0

14.0

°F

305

300.0

1200.0

hPa

Precipitation Type

700

0, 40

Precipitation Intensity

840

0.000

7.874

in/h

Amount of Precip. Difference

645

0.0000

3937.0000

Amount of Precip. Absolute

640

0.000

3937.000

Air Temperature (min)

125

-58.0

140.0

°F

Air Temperature (max)

145

-58.0

140.0

°F

Air Temperature (avg)

165

-58.0

140.0

°F

Rel. Humidity (min)

220

0.0

100.0

Rel. Humidity (max)

240

0.0

100.0

Rel. Humidity (avg)

260

0.0

100.0

Rel. Air Pressure(min)

325

300.0

1200.0

hPa

Rel. Rel. Humidity (max)

345

300.0

1200.0

hPa

Rel. Rel. Humidity (avg)

365

300.0

1200.0

hPa

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Specific Enthalpy

215

-100.0

1000.0

kJ/kg

Buffer ‘0’

reserved
Rel. Air Pressure (act)
Buffer ‘1’

Buffer ‘2’

Buffer ‘3’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

105

Operating Manual

Smart Weather Sensor

19.6.4.11 Buffer Assignment Basic Data Set Power Saving Mode 2 (all Models)

Device configured for measurement in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

100

-50.0

60.0

°C

Rel. Humidity (act)

200

0.0

100.0

Amount of Precip. Difference

625

0.00

100000.00

Rel. Air Pressure(act)

305

300.0

1200.0

hPa

Wind Speed (act)

400

0.0

75.0

m/s

Wind Direction(act)

500

0.0

359.9

Global Radiation

900

0.0

2000.0 *)

W/m

101

-20.0

80.0

°C

Amount of Precip. Absolute

620

0.0

100000.0

Dew point (act)

110

-50.0

60.0

°C

Abs. Humidity (act)

205

0.0

1000.0

g/m³

Mixing Ratio(act)

210

0.0

1000.0

g/kg

Abs. Air Pressure(act)

300

300.0

1200.0

hPa

Buffer ‘0’

Buffer ‘1’

reserved
External Temperature
Buffer ‘2’

Buffer ‘3’
Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Air Density

310

0.000

3.000

kg/m3

Compass (act)

510

0.0

359.0

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

Example: Request Buffer ‘0’
0D0!
0+13.5+85.7+0.2+1017.0+1.8
Air temperature 13.5°C, rel. humidity 85.7%, precipitation 0.2°C, rel. air pressure 1017.0hPa, wind speed1.8m/s

106

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Device configured for measurement in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Rel. Humidity (act)

200

0.0

100.0

Amount of Precip. Difference

645

0.0000

3937.0000

Rel. Air Pressure(act)

305

300.0

12000

hPa

Wind Speed (act)

410

0.0

167.8

mph

Wind Direction(act)

500

0.0

359.9

Global Radiation

900

0.0

2000.0 *)

W/m

106

-4.0

176.0

°F

Amount of Precip. Absolute

640

0.000

3937.000

Dew point (act)

115

-58.0

140.0

°F

Abs. Humidity (act)

205

0.0

1000.0

g/m³

Mixing Ratio(act)

210

0.0

1000.0

g/kg

Abs. Air Pressure(act)

300

300.0

1200.0

hPa

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Air Density

310

0.000

3.000

kg/m3

Compass (act)

510

0.0

359.0

Buffer ‘0’

Buffer ‘1’

reserved
External Temperature
Buffer ‘2’

Buffer ‘3’

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

107

Operating Manual

Smart Weather Sensor

19.6.5 Additional Measurement Commands
With the additional measurement commands
aM1! … aM8!
aMC1! … aMC8!
(M-Command, data transmission with CRC)
aC1! … aC8!
aCC1! … aCC8!
(C- Command, data transmission with CRC)
The complete data sets of the Smart Weather Sensor, as defined for the UMB protocol are
available in a SDI-12 environment as well.
The measurement values are ordered according to sensor types.
Equally to the base data sets max. 9 values can be requested with an additional M
command, while an additional C request allows for up to 20 values.
The buffer assignment as documented in the following paragraphs has consequently been
structured in a way that with each M command the buffers D0 and D1 are used. If the
respective sensor type has more values available the buffers D2 up to D4 will be occupied if
required.
M1 / C1

Temperature

M: 9 Values

C: 9 Values

M2 / C2

Humidity

M: 9 Values

C: 13 Values

M3 / C3

Air Pressure

M: 9 Values

C: 9 Values

M4 / C4

Wind

M: 9 Values

C: 14 Values

M5 / C5

Compass

M: 1 Values

C: 1 Values

M6 / C6
WS401/601:
Others:

Precipitation
Precipitation

M: 9 Values
M: 4 Values

C: 9 Values
C: 4 Values

M7 / C7
WS800-UMB: Global Radiation,
Lightning Sensor
M: 9 Values
WS100-UMB: Drop Diameter Distrib. M: --Others:
Global Radiation
M: 4 Values

C: 10 Values
C: 17 Values
C: 4 Values

M8 / C8

C: 1 Value

Ext. Temperature

M: 1 Value

If the sensor type requested with the measurement command is not available with the actual
variant of the Smart Weather Sensor (WS100-UMB ... WS800-UMB) the device will respond
with
a0000 resp.
a00000

108

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.5.1 Buffer Assignment Additional Measurement Commands M1 / C1:
Temperature

Device configured for measurement values in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

100

-50.0

60.0

°C

Air Temperature (min)

120

-50.0

60.0

°C

Air Temperature (max)

140

-50.0

60.0

°C

Air Temperature (avg)

160

-50.0

60.0

°C

Dew Point (act)

110

-50.0

60.0

°C

Dew Point (min)

130

-50.0

60.0

°C

Dew Point (max)

150

-50.0

60.0

°C

Dew Point (avg)

170

-50.0

60.0

°C

Wet Bulb Temperature (act)

114

-50.0

60.0

°C

Buffer ‘0’

Buffer ‘1’

Example: Request with M command
0M1!
00009
0D0!
0+12.5+10.7+13.5+11.8+5.3
0D1!
0+4.2+5.9+5.6+9.8

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Air Temperature (act)

105

-58.0

140.0

°F

Air Temperature (min)

125

-58.0

140.0

°F

Air Temperature (max)

145

-58.0

140.0

°F

Air Temperature (avg)

165

-58.0

140.0

°F

Dew Point (act)

115

-58.0

140.0

°F

Dew Point (min)

135

-58.0

140.0

°F

Dew Point (max)

155

-58.0

140.0

°F

Dew Point (avg)

175

-58.0

140.0

°F

Wet Bulb Temperature (act)

119

-58.0

140.0

°F

Buffer ‘0’

Buffer ‘1’

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

109

Operating Manual

Smart Weather Sensor

19.6.5.2 Buffer Assignment Additional Measurement Commands M2 / C2: Humidity

Device configured for measurement values in metric or US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Rel. Humidity (act)

200

0.0

100.0

Rel. Humidity (min)

220

0.0

100.0

Rel. Humidity (max)

240

0.0

100.0

Rel. Humidity (avg)

260

0.0

100.0

Abs. Humidity (act)

205

0.0

1000.0

g/m³

Abs. Humidity (min)

225

0.0

1000.0

g/m³

Abs. Humidity (max)

245

0.0

1000.0

g/m³

Abs. Humidity (avg)

265

0.0

1000.0

g/m³

Specific Enthalpy (act)

215

-100.0

1000.0

kJ/kg

Mixing Ratio(act)

210

0.0

1000.0

g/kg

Mixing Ratio (min)

230

0.0

1000.0

g/kg

Mixing Ratio (max)

250

0.0

1000.0

g/kg

Mixing Ratio (avg)

270

0.0

1000.0

g/kg

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Example: Request with M command
0M2!
00009
0D0!
0+48.5+48.2+48.8+48.5
0D1!
0+5.7+5.5+5.9+5.7+29.3
Example: Request with C command
0C2!
000013
0D0!
0+48.5+48.2+48.8+48.5
0D1!
0+5.7+5.5+5.9+5.7+29.3
0D2!
0+4.6+4.4+5.0+4.6

110

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.5.3 Buffer Assignment Additional Measurement Commands M3 / C3: Air
Pressure

Device configured for measurement values in metric or US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Abs. Air Pressure(act)

300

300.0

1200.0

hPa

Abs. Air Pressure (min)

320

300.0

1200.0

hPa

Abs. Air Pressure (max)

340

300.0

1200.0

hPa

Abs. Air Pressure (avg)

360

300.0

1200.0

hPa

Air Density (act)

310

0.000

3.000

kg/m3

Rel. Air Pressure (act)

305

300.0

1200.0

hPa

Rel. Air Pressure (min)

325

300.0

1200.0

hPa

Rel. Air Pressure (max)

345

300.0

1200.0

hPa

Rel. Air Pressure (avg)

365

300.0

1200.0

hPa

Buffer ‘0’

Buffer ‘1’

Example: Request with M command
0M3!
00009
0D0!
0+1001.0+1000.0+1002.0+1001.0+1.119
0D1!
0+1017.0+1016.0+1018.0+1017.0
Example: Request with C command
0C3!
000009
0D0!
0+1001.0+1000.0+1002.0+1001.0+1.119
0D1!
0+1017.0+1016.0+1018.0+1017.0

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

111

Operating Manual

Smart Weather Sensor

19.6.5.4 Buffer Assignment Additional Measurement Commands M4 / C4: Wind
Device configured for measurement values in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Wind Speed (act)

400

0.0

75.0

m/s

Wind Speed (min)

420

0.0

75.0

m/s

Wind Speed (max)

440

0.0

75.0

m/s

Wind Speed (avg)

460

0.0

75.0

m/s

Wind Speed (vct)

480

0.0

75.0

m/s

Wind Direction (act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Wind Direction (vct)

580

0.0

359.9

Wind Direction corr. (act)

502

0.0

359.9

Wind Quality

805

0.0

100.0

Wind Chill Temperature (act)

111

-60.0

70.0

°C

Wind Speed Standard Dev.*

403

0.0

60.0

m/s

Wind Direction Standard Dev.*

503

0.0

359.9

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Wind Speed (act)

410

0.0

167.8

mph

Wind Speed (min)

430

0.0

167.8

mph

Wind Speed (max)

450

0.0

167.8

mph

Wind Speed (avg)

470

0.0

167.8

mph

Wind Speed (vct)

490

0.0

167.8

mph

Wind Direction (act)

500

0.0

359.9

Wind Direction (min)

520

0.0

359.9

Wind Direction (max)

540

0.0

359.9

Wind Direction (vct)

580

0.0

359.9

Wind Direction corr. (act)

502

0.0

359.9

Wind Quality

805

0.0

100.0

Wind chill Temperature (act)

116

-76.0

158.0

°F

Wind Speed Standard Dev.*

413

0.0

167.8

mph

Wind Direction Standard Dev.*

503

0.0

359.9

Buffer ‘0’

Buffer ‘1’

Buffer ‘2’

*) Note: Std.Dev. values will be available after the first request. See p. 11.

112

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.5.5 Buffer Assignment Additional Measurement Commands M5 / C5: Compass

Device configured for measurement values in metric or US units:
Measurement Value

UMB
Channel

Min

Max

Unit

510

0.0

359.0

Buffer ‘0’
Compass (act)

Example: Request with M command
0M5!
00001
0D0!
0+348.0
Example: Request with C command
0C5!
000001
0D0!
0+348.0

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

113

Operating Manual

Smart Weather Sensor

19.6.5.6 Buffer Assignment Additional Measurement Commands M6 / C6:
Precipitation

Device configured for measurement values in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Precip. Amount absolute

620

0.0

100000.0

Precip. Amount difference

625

0.00

100000.00

Precipitation Intensity

820

0.0

200.0

mm/h

Precipitation Type

700

0, 40, 60, 70 (67, 69, 90)*

Buffer ‘0’

Buffer ‘1’ (WS401-UMB, WS601-UMB only)
reserved
reserved
reserved
reserved
reserved

)* additional precipitation types: WS100-UMB only
Example: Request with M command
0M6!
00009
0D0!
0+1324.5+1.10+4.4+60
0D1!
0+603.5+562.4+847.4+623.8+1

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Precip. Amount absolute

640

0.000

3937.000

Precip. Amount difference

645

0.0000

3937.0000

Precipitation Intensity

840

0.000

7.874

in/h

Precipitation Type

700

0, 40, 60, 70 (67, 69, 90)*

Buffer ‘0’

Buffer ‘1’ (WS401-UMB, WS601-UMB only)
reserved
reserved
reserved
reserved
reserved

)* additional precipitation types: WS100-UMB only

114

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.6.5.7 Buffer Assignment Additional Measurement Commands M7 / C7: Global
Radiation, Lightning Detection (WS100-UMB: Drop Diameter Distribution)
Assignment for WS30x-UMB, WS50x-UMB, WS700-UMB, WS800-UMB
Device configured for measurement values in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

Global Radiation (act)

900

0.0

2000.0 *)

W/m²

Global Radiation (min)

920

0.0

2000.0 *)

W/m²

Global Radiation (max)

940

0.0

2000.0 *)

W/m²

Global Radiation (avg)

960

0.0

2000.0 *)

W/m²

Lightning Events (minute)

617

255

Lightning Events (Intervall)

677

999

Buffer ‘0’

Buffer ‘1’ (WS800-UMB only)

reserved
reserved
reserved
Buffer ‘2’ (WS800-UMB only)
reserved

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

Example: Request with M Command
0M7!
00004
0D0!
0+780.0+135.0+920.0+530.0
Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

Global Radiation (act)

900

0.0

2000.0 *)

W/m²

Global Radiation (min)

920

0.0

2000.0 *)

W/m²

Global Radiation (max)

940

0.0

2000.0 *)

W/m²

Global Radiation (avg)

960

0.0

2000.0 *)

W/m²

Lightning Events (minute)

617

255

Lightning Events (Intervall)

677

999

Buffer ‘0’

Buffer ‘1’ (WS800-UMB only)

reserved
reserved
reserved
Buffer ‘2’ (WS800-UMB only)
reserved

*) Until device version .49 / .212 / Firmware v5.6: 1400.0 W/m

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

115

Operating Manual

Smart Weather Sensor

Assignment for WS100-UMB, C7 Request only
Device configured for measurement values in metric or US units:
Messgröße

UMBKanal

Min

Max

Einheit

Total precipitation particles

4600

9999999

Event

Total drops

4601

9999999

Event

Drizzle particles

4602

65535

Event

Snow particles

4603

65535

Event

Hail particles

4604

65535

Event

Drop class 0

4620

65535

Event

Drop class 1

4621

65535

Event

Drop class 2

4622

65535

Event

Drop class 3

4623

65535

Event

Drop class 4

4624

65535

Event

Drop class 5

4625

65535

Event

Drop class 6

4626

65535

Event

Drop class 7

4627

65535

Event

Drop class 8

4628

65535

Event

Drop class 9

4629

65535

Event

Drop class 10

4630

65535

Event

Drop class 11

4631

65535

Event

Puffer ‘0’

Puffer ‘1’

116

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Operating Instructions

Smart Weather Sensor

19.6.5.8 Buffer Assignment Additional Measurement Commands M8 / C8: External
Temperature

Device configured for measurement values in metric units:
Measurement Value

UMB
Channel

Min

Max

Unit

101

-40.0

80.0

°C

Buffer ‘0’
External Temperature (act)

Example: Request with M Command
0M8!
00001
0D0!
0+13.5

Device configured for measurement values in US units:
Measurement Value

UMB
Channel

Min

Max

Unit

106

-40.0

176.0

°F

Buffer ‘0’
External Temperature (act)

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19.6.6 Message Device Identification
The device responds to the identification request with following message (example for SDI12 device address ‘0’:
0I!
013Lufft.deWSx00ynnn
x: device type (4, 5, 6, 2, 3 )
y: Metric / US units ( m = metric, u = US )
nnn: Software version
i.e. for a WS600-UMB, configured for US units:
0I!
013Lufft.deWS600u022

19.6.7 Message Verification
The command verification aV! is used to evaluate status information of the device. The
device responds with
a0005
WS700/800-UMB: a0006
to the request, i.e. 5 (6) values are available in the buffers.
The first 3 (4) “measurement values”, transmitted in buffer ‘0’ contain the status information
of the measurement channels.
The status data of the channels are assembled to form “fake measurement values”, where
each digit represents one status. See below for the coding of states. Generally each sensor
has two status values, one for the direct value and another for the measurement value buffer
used for the evaluation of the average, min, and max values.
The last two values, transmitted in buffer ‘1’, show the heating temperatures of wind and
precipitation sensor.
Buffer ‘0’
Status group1: +nnnn

Air temperature, air temperature buffer, dew point, dew point
buffer

Status group1: +nnnnnn
(WS401 / WS601 only)

Air temperature, air temperature buffer, dew point, dew point
buffer, reserved, reserved

Status group 2: +nnnnnn

Rel. Humidity, rel. Humidity buffer, abs. Humidity, abs
humidity buffer, mixing ration, mixing ration buffer

Status group 3: +nnnnnn

Air pressure, air pressure buffer, wind, wind buffer,
compass, precipitation
(WS301/501 transmits the global radiation status instead of
the precipitation status)

Status group 4: +nnnn
(WS700-UMB, WS800-UMB
only)

Global radiation status, global radiation buffer status,
lightning detector status, lightning detector buffer status

Buffer ‘1’, device configured for metric units
Measurement value

UMB
Channel

min

max

Unit

Heating temp. Wind sensor

112

-50

+150

°C

Heating temp. Precip. sensor

113

-50

+150

°C

Buffer ‘1’, device configured for US units

118

Heating temp. Wind sensor

117

-58

+302

°F

Heating temp. Precip. sensor

118

-58

+302

°F

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Sensor status codes:
Sensor status

Code

UNGLTG_KANAL

E2_CAL_ERROR
E2_CRC_KAL_ERR
FLASH_CRC_ERR
FLASH_WRITE_ERR
FLASH_FLOAT_ERR

MEAS_ERROR

MEAS_UNABLE

INIT_ERROR

VALUE_OVERFLOW
CHANNEL_OVERRANGE

VALUE_UNDERFLOW
CHANNEL_UNDERRANGE

BUSY

other sensor status

Example (WS600-UMB, SDI-12 Address ‘0’, no error):
0V!
00005
0D0!
0+0000+000000+00000
0D1!
0+73.0+65.3
Example (WS600-UMB, SDI-12 Address ‘0’, compass failure):
0V!
00005
0D0!
0+0000+000000+000030
0D1!
0+73.0+65.3

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19.6.8 Message Change of Unit System
The command is used to change the unit system used for the SDI12 data between metric
and US units. It is implemented as manufacturer specific X command.
Command:
aXU!
Response:
u:
m:

US units
metric units

Example: change to metric units, SDI-12 address ‘0’
0XUm!
0Um

19.6.9 Message: Setting of the Averaging Interval Length
The avg, min, max and vct values of the measurement values are evaluated over a floating
interval with a length of 1 to 10 min. The length of this interval can be adjusted separately for
the groups temperature / humidity, air pressure and wind. (The averaging algorithm is not
applied to precipitation and compass).
Command:
aXA+nn!
t:
Temperature and Humidity
p:
Air pressure
w:
Wind
r:
Global radiation
nn:
Interval in minutes, valid range: 1 bis 10
Response:
aXA+nn
The response to the attempt of setting of an invalid interval length is
aXAf
Example: Setting the interval for temperature and humidity to 5 minutes
0XAt+5!
0XAt+5
19.6.10 Message: Setting of the Local Altitude
For the calculation of the relative air pressure the local altitude of the device is required.
Command:
aXH+nnnn!
nnnn: local altitude of the sensor in m
Response:
aXH+nnnn
The response to the attempt of setting of an invalid altitude (-100 < altitude < 5000) is
aXHf
Example: The altitude of the installation location is 135m above sea level
0XH+135!
0XH+135

120

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Operating Instructions

Smart Weather Sensor

19.6.11 Setting of the Local Magnetic Declination
For exact compass heading the local magnetic declination must be set.
Command:
aXD+nnn.n!
nnn.n: local magnetic declination at installation site in ° *)
Response:
aXD+nnn.n
The response to the attempt of setting of an invalid altitude (-180.0
Example: The declination at the installation location is -5.3°
0XD-5.3!
0XD-5.3
*) The magnetic declination is available from various web sites, e.g.
http://www.ngdc.noaa.gov/geomag-web/#declination
19.6.12 Message: Activation / Deactivation of Compass Correction
The correction of the wind direction by the compass bearing can be activated or deactivated.
Command:
aXW!
c:
wind direction is corrected by the compass bearing
u:
wind direction is not corrected
Response:
aXW
The response to the attempt of setting an invalid option is
aXWf
Example: Compass correction of wind direction is activated
0XWc!
0XWc

19.6.13 Message: Setting the Power Saving Mode
For installations with limited power supply the Smart Weather Sensor may be operated in
power saving mode (see Chap. 40).
Note: Operation in power saving mode has some functional restrictions!
Command:
aXL!
n:
Normal Operation
s:
Power saving mode 1 (Heating/Fan off)
w:
Power saving mode 2 (Sleep mode)
Response:
aXL
The response is followed by the device reset, i.e. the device will be offline for a few seconds.
The response to the selection of an invalid option or of an invalid combination of mode and
device model is
aXLf
Example: The device shall be set to power saving mode 2
0XLw!
0XLw

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19.6.14 Message: Setting the Heating Mode
The heating of the precipitation and the wind sensors can be configured in different operation
modes (see chapter 10.4). Depending on the actual variant of the Smart Weather Sensor
(WS100-UMB ...WS800-UMB) only certain combinations of operating modes are available.
The Smart Weather Sensor evaluates the valid combinations from the device heating mode
requested in the command automatically.
Command:
aXMn!
n:
Heating Operating Mode (0: Automatic, 1: Mode 1, 2: Off, 3: Eco Mode 1)
Response:
aXMnm
n:
Selected Heating Mode Wind Sensor
m:
Selected Heating Mode Precipitation Sensor
The response to the attempt of setting an invalid operation mode is
aXMf

Example: A WS400-UMB shall be set to Mode 1
0XM1!
0XM21
As the WS400-UMB does not have a wind sensor the heating mode wind is automatically set
to 2 (= off).
0XD+633.0

122

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Operating Instructions

Smart Weather Sensor

19.6.15 Message: Setting of the Rain Gauge Resolution
The resolution of the tipping bucket rain gauge of WS401-UMB and WS601-UMB, as well as
the resolution of an optional external rain gauge connected to a model without internal
precipitation measurement can be mechanically adjusted (see p. 35). The mechanical
resolution must be set in the sensor configuration.
Command:
aXK+n!
n:
resolution of the rain gauge in 1/10mm, valid settings 1, 2, 5, 10
(0.1mm, 0.2mm, 0.5mm, 1.0mm)
Response:
aXK+n
The response to the attempt of setting of an invalid resolution is
aXKf
Example: The mechanical resolution of the rain gauge is 0.2mm
0XK+2!
0XK+2
19.6.16 Message: Clearing the Absolute Precipitation Amount
The command clears the accumulated absolute precipitation amount to 0.0mm. At the same
time a device reset is applied.
Command:
aXC!
Response:
aXCok
The response is followed by the device reset, i.e. the device will be offline for a few seconds.
Example:
0XC!
0XCok
19.6.17 Message: Device Reset
The command initiates a device reset.
Command:
aXR!
Response:
aXRok
The response is followed by the device reset, i.e. the device will be offline for a few seconds.
Example:
0XR!
0XRok

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19.7 Communication in Modbus Mode
For a simpler integration of WS family Smart Weather Sensors into a PLC environment the
Modbus communication protocol has been made available.
Measurement values are mapped to Modbus Input Registers. The range of values available
is basically the same as for the UMB protocol, including different unit systems.
In the interest of simple and safe integration the use of register pairs for floating point values
or 32 bit integers, which is not part of the Modbus standard, has not been applied. All
measurement values are mapped to 16bit integers using suitable scaling factors.
19.7.1 Modbus Communication Parameters
The Smart Weather Sensor can be configured for MODBUS-RTU or for MODBUS-ASCII.
The base configuration has to be done using the UMB Config Tool.
When selecting MODBUS RTU or MODBUS-ASCII with the UMB Config Tool,
communication parameters 19200 Bd, even parity, will be preselected.
Modbus operating modes:
MODBUS-RTU, MODBUS-ASCII
Baud rate:
19200 (9600, 4800 or lower)
Interface Setting
8E1, 8N1, 8N2
NOTE: The Modbus communication has been tested for a poll rate of 1 sec. The proper
function of the Smart Weather Sensor with higher Modbus poll rates has not been tested.
We suggest to set the poll rate to 10 sec or slower, as, with the exception of the channels
„wind speed / wind directions fast“, which are provided for special purposes, the update rate
of the data is >= 10sec. Anyway for most of the weather data significant changes have tob e
expected more in the range of minutes.
19.7.2 Addressing
The Modbus address is deducted from the the UMB device ID (see Chap. 19.3.2).
A device with UMB device ID 1 also has the UMB address 1, etc..
The valid address range of Modbus from 1 to 247 is smaller than that of the UMB device IDs.
If a UMB device ID > 247 has been selected, the Modbus address will be set to 247.
19.7.3 Modbus Functions
The functions of conformance class 0 and 1 have been implemented as far as they are
applicable for the Smart Weather Sensor, i.e. all functions operating on register level.
Conformance Class 0
0x03

Read Holding Registers

Selected configuration settings

0x16

Write Multiple Registers

Selected configuration settings

Conformance Class 1
0x04

Read Input Registers

Measurement values and status information

0x06

Write Single Register

Selected configuration settings

0x07

Read Exception Status

Currently not used

Diagnostics
0x11

124

Report Slave ID

(responds also to broadcast address)

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

19.7.3.1 Function 0x03 Read Holding Registers
The Holding Registers are used to make a selected set of adjustable parameters available
for Modbus access. As for the measurement values the parameters are mapped to 16bit
integers.
Reg.
No.

Reg.
Addr

Function

Values

Scale

Local Altitude

Altitude in m, for calculation of relative air pressure
Value range -100 … 5000

1.0

Deviation

Local deviation for the correction of compass heading.

10.0

Value range -3599 … 3599
(equalling -359.9° … +359.9°)
3
4
5
6
7

2
3
4
5
6

Averaging Interval
TFF

Interval for averaging and min/max evaluation in minutes

Averaging Interval
Air Pressure

Interval for averaging and min/max evaluation in minutes

Averaging Interval
Wind

Interval for averaging and min/max evaluation in minutes

Averaging Interval
Global Radiation

Interval for averaging and min/max evaluation in minutes

Heating Mode

High-Byte: Heating Mode Wind
Low-Byte Heating Mode R2S

1.0

Value range 1 … 10
1.0

Value range 1 … 10

Value range of each byte 0 … 3
(Details s. 10.5)
8

Reset abs. Rain

(Function only when writing to the register, reading will
give 0 always)

Device reset

(Function only when writing to the register, reading will
give 0 always)

Heating Modes (see 10.5):
Automatic
0
Mode 1
1
Off
2
Eco 1
3
19.7.3.2 Function 0x06 Write Holding Register, 0x10 Write Multiple Registers
By writing into the holding registers selected parameters of the Smart Weather Sensor can
be adjusted through Modbus.
Register assignment see19.7.3.1
Local altitude, compass deviation and averaging intervals are set by writing the new values
into the related registers. Depending on the selected register the value has to be scaled by
the factor given in the table:
Example: for compass deviation the table shows a scaling factor of 10.0. If the deviation is
4.8° a value of 48 shall be written into register 2 (reg.addr. 1).
The transmitted values will be checked for plausibility. Illegal values will not be accepted and
cause a Modbus exception.
When writing the value 0x3247 (12871d) to register no. 8 (reg. addr. 7) the stored absolute
rain amount will be set to 0. Subsequently a device reset will be initiated.
When writing the value 0x3247 (12871d) to register no. 9 (reg. addr. 8) a device reset will be
initiated.
Setting of the heating mode:
The wind sensor heating mode is coded into the high byte of the 16bit register no. 7, the
precipitation sensor heating mode into the low byte of this register
Example :
Heating mode wind: Mode 1 (Code 1)
Heating mode precipitation: Off (Code 2)
Write to register 7 (reg. addr. 6):
0x0102 (=258d)
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Setting for minimum power consumption, both heatings off (Code 2):
Write to register 7 (reg. addr. 6):
0x0202 (=514d)
The factory setting for a WS600-UMB is automatic mode for both heatings, i.e. 0x0000.
When attempting to set a heating mode not supported by the individual device variant, e.g.
activating the precipitation heating of a device without precipitation sensor, the device will
automatically adjust the value written to the register, so that the value read back from the
register might be different from the written value.

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Operating Instructions

Smart Weather Sensor

19.7.3.3 Function 0x04 Read Input Registers
The input registers are containing the measurement values of the Smart Weather Sensor
and the related status information.
The measurement values are mapped to the 16bit registers using scaling factors (0 … max.
65530 for unsigned values, -32762 … 32762 for signed values).
Values 65535 (0xffff) resp. 32767 are used for the indication of erroneous or not available
measurement values. A more detailed specification of the error can be evaluated from the
status registers.
The assignment of values to the available register addresses (0 … 124) has been arranged
in a way so that the user can read the most frequently used data with few (ideally only one)
register block requests
Following blocks have been defined:
 Status information
 Frequently used values which are independent of the unit system (met./ imp.) in use
 Frequently used values in metric units
 Frequently used values in imperial units
 Other measurement values
When using the metric unit system the first three blocks can the supply all data usually
required with one request.
There is no difference in the register assignment between the sub types of the WS family. If,
dependent on the type, some value is not available, this will be indicated by setting the
register to the error value.
For detailed information about measurement ranges, units etc. please refer to the related
description of the UMB channels (Chapter 6 and 19.1)
Reg.
No.

Reg.
Addr.

Value (UMB
Channel)

Range

Scaling Factor, Remarks

High Byte: WS-Type (2,3,4,5,6)
Low Byte: Software Version

Type coding, see below

Coding 4 bit per status, see
below

Status Information
1

Identification

Device Status

Sensor Status 1

Air temperature buffer, air temperature, dew
point buffer, dew point(high byte -> low byte,
see table below)

Sensor Status 2

Rel. humidity buffer, rel. humidity, abs.
Coding 4 bit per status, see
humidity buffer, abs. humidity(high byte -> low below
byte, see table below)

Sensor Status 3

Mixing ratio buffer, mixing ration, air press.
buffer, air press. (high byte -> low byte, see
table below)

Sensor Status 4

Wind buffer, wind, precipitation, compass(high Coding 4 bit per status, see
byte -> low byte, see table below)
below

Sensor Status 5

Global radiation buffer, global radiation,
Coding 4 bit per status, see
reserved, reserved (high byte -> low byte, see below
table below)

Sensor Status 6

External temperature / external rain gauge,
lightning sensor, lightning sensor buffer (see
table below)

Reserve

Coding 4 bit per status, see
below

Diagnostic: run time in 10sec steps

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Reg.
No.

Reg.
Addr.

Value (UMB
Channel)

Range

Scaling Factor,
signed/unsigned,
Remarks

Values Independent of the Unit System

128

200

Relative Humidity (act.)

Factor 10, s

220

Relative Humidity (min.)

Factor 10, s

240

Relative Humidity (max.)

Factor 10, s

260

Relative Humidity (avg.)

Factor 10, s

305

Rel. Air Pressure (act.)

Factor 10, s

325

Rel. Air Pressure (min.)

Factor 10, s

345

Rel. Air Pressure (max.)

Factor 10, s

365

Rel. Air Pressure (avg.)

Factor 10, s

500

Wind Direction (act.)

Factor 10, s

520

Wind Direction (min.)

Factor 10, s

540

Wind Direction (max.)

Factor 10, s

580

Wind Direction (vct.)

Factor 10, s

501

Wind Direction fast

Factor 10, s

502

Wind Direction compass corr.

Factor 10, s

510

Compass

Factor 10, s

700

Precipitation Type

Factor 1, s

805

Wind Measurement Quality

Factor 1, u

900

Global Radiation (act.)

Factor 10, s

920

Global Radiation (min.)

Factor 10, s

940

Global Radiation (max.)

Factor 10, s

960

Global Radiation (avg.)

Factor 10, s

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Reg.
No.

Reg.
Addr.

Value (UMB
Channel)

Range

Scaling Factor,
signed/unsigned Remarks

Values in Metric Units
32

100

Air Temperature °C (act.)

Factor 10, s

120

Air Temperature °C (min.)

Factor 10, s

140

Air Temperature °C (max.)

Factor 10, s

160

Air Temperature °C (avg.)

Factor 10, s

110

Dew Point °C (akt.)

Factor 10, s

130

Dew Point °C (min.)

Factor 10, s

150

Dew Point °C (max.)

Factor 10, s

170

Dew Point °C (avg.)

Factor 10, s

111

Wind Chill-Temperature °C

Factor 10, s

112

Heating Temperature Wind °C

Factor 10, s

113

Heating Temperature R2S °C

Factor 10, s

400

Wind Speed m/s (akt.)

Factor 10, s

420

Wind Speed m/s (min.)

Factor 10, s

440

Wind Speed m/s (max.)

Factor 10, s

460

Wind Speed m/s (avg.)

Factor 10, s

480

Wind Speed m/s (vct.)

Factor 10, s

401

Wind Speed fast m/s

Factor 10, s

620

Precipitation abs. mm

Factor 100, u, limited to
655.34mm

625

Precipitation diff. mm

Factor 100, u, limited to
100.00mm

820

Precipitation intens. mm/h

Factor 100, u, limited to
200.00mm/h

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Reg.
No.

Reg.
Addr.

Value (UMB
Channel)

Range

Scaling Factor,
signed/unsigned Remarks

Values in US Units

130

105

Air Temperature °F (act.)

Factor 10, s

125

Air Temperature °F (min.)

Factor 10, s

145

Air Temperature °F (max.)

Factor 10, s

165

Air Temperature °F (avg.)

Factor 10, s

115

Dew Point °F (act.)

Factor 10, s

135

Dew Point °F (min.)

Factor 10, s

155

Dew Point °F (max.)

Factor 10, s

175

Dew Point °F (avg.)

Factor 10, s

116

Wind Chill-Temperature °F

Factor 10, s

117

Heating Temperature Wind °F

Factor 10, s

118

Heating Temperature R2S °F

Factor 10, s

410

Wind Speed mph (act.)

Factor 10, s

430

Wind Speed mph (min.)

Factor 10, s

450

Wind Speed mph (max.)

Factor 10, s

470

Wind Speed mph (avg.)

Factor 10, s

490

Wind Speed mph (vct.)

Factor 10, s

411

Wind Speed fast mph

Factor 10, s

640

Precipitation abs. In

Factor 1000, u, limited to 25.800
in

645

Precipitation diff. in

Factor 10000, u, limited to
3.9370in

840

Precipitation Intens. in/h

Factor 10000, u, limited to
6.5534 in

G. Lufft Mess- und Regeltechnik GmbH, Fellbach, Germany

Operating Instructions

Smart Weather Sensor

Reg.
No.

Reg.
Addr.

Value (UMB
Channel)

Range

Scaling Factor,
signed/unsigned, Remarks

205

Absolute Humidity (act.)

Factor 10, s

225

Absolute Humidity (min.)

Factor 10, s

245

Absolute Humidity (max.)

Factor 10, s

265

Absolute Humidity (avg.)

Factor 10, s

210

Mixing Ratio (act.)

Factor 10, s

230

Mixing Ratio (min.)

Factor 10, s

250

Mixing Ratio (max.)

Factor 10, s

270

Mixing Ratio (avg.)

Factor 10, s

300

Abs. Air Pressure (act.)

Factor 10, s

320

Abs. Air Pressure (min.)

Factor 10, s

340

Abs. Air Pressure (max.)

Factor 10, s

360

Abs. Air Pressure (avg.)

Factor 10, s

405

Wind Speed km/h (act.)

Factor 10, s

425

Wind Speed km/h (min.)

Factor 10, s

445

Wind Speed km/h (max.)

Factor 10, s

465

Wind Speed km/h (avg.)

Factor 10, s

485

Wind Speed km/h (vct.)

Factor 10, s

415

Wind Speed kts (act.)

Factor 10, s

435

Wind Speed kts (min.)

Factor 10, s

455

Wind Speed kts (max.)

Factor 10 , s

475

Wind Speed kts (avg.)

Factor 10, s

495

Wind Speed kts (vct.)

Factor 10, s

406

Wind Speed fast km/h

Factor 10, s

416

Wind Speed fast kts

Factor 10, s

403

Wind Speed Std. Dev. m/s *

Factor 100, s

413

Wind Speed Std. Dev. Mph *

Factor 100, s

503

Wind Dir. Standard Dev.*

Factor 100, s

114

Wet Bulb Temp. °C (act)

Factor 10, s

100

119

Wet Bulb Temp. °F (act)

Factor 10, s

101

100

215

Specific Enthalpy (act)

Factor 10, s

102

101

310

Air Density (act)

Factor 1000, s

Further Values

*) Note: Standard deviation values are available after the first request. Please see p. 11

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Reg.
No.

Reg.
Addr.

Value (UMB
Channel)

Range

Scaling Factor,
signed/unsigned, Remarks

Further Values
103

102

710

reserved

Factor 1, s

104

103

730

reserved

Factor 1, s

105

104

750

reserved

Factor 1, s

106

105

770

reserved

Factor 1, s

107

106

711

reserved

Factor 1, s

108

107

101

External Temperature °C (act)

Factor 10, s

109

108

109

External Temperature °F (act)

Factor 10, s

110

109

806

Wind Value Quality (fast)

Factor 1, u

111

110

617

Lightning Events (minute)

Factor 1, u

112

111

677

Lightning Events (Intervall)

Factor 1, u

Reserved

Service Channels
Air temperature (WS100-UMB only, no radiation shield)
Reg.
No.

Reg.
Addr.

Value (UMB
Channel)

Range

Scaling Factor,
signed/unsigned Remarks

Values in Metric Units

132

150

149

4100

Air Temperature °C (act.)

Factor 10, s

151

150

4120

Air Temperature °C (min.)

Factor 10, s

152

151

4140

Air Temperature °C (max.)

Factor 10, s

153

152

4160

Air Temperature °C (avg.)

Factor 10, s

154

153

4105

Air Temperature °F (act.)

Factor 10, s

155

154

4125

Air Temperature °F (min.)

Factor 10, s

156

155

4145

Air Temperature °F (max.)

Factor 10, s

157

156

4156

Air Temperature °F (avg.)

Factor 10, s

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Operating Instructions

Smart Weather Sensor

Drop Diameter Distribution (WS100-UMB only)
Reg.
No.

Reg. Value (UMB Channel)
Addr.

Range

Scaling Factor,
signed/unsigned,
Remarks

130

129

4600

Total particles

Faktor 1, u

131

130

4601

Total drops

Faktor 1, u

132

131

4602

Drizzle particles

Faktor 1, u

133

132

4603

Snow particles

Faktor 1, u

134

133

4604

Hail particles

Faktor 1, u

135

134

4620

Drop class 0

Faktor 1, u

136

135

4621

Drop class 1

Faktor 1, u

137

136

4622

Drop class 2

Faktor 1, u

138

137

4623

Drop class 3

Faktor 1, u

139

138

4624

Drop class 4

Faktor 1, u

140

139

4625

Drop class 5

Faktor 1, u

141

140

4626

Drop class 6

Faktor 1, u

142

141

4627

Drop class 7

Faktor 1, u

143

142

4628

Drop class 8

Faktor 1, u

144

143

4629

Drop class 9

Faktor 1, u

145

144

4630

Drop class 10

Faktor 1, u

146

145

4631

Drop class 11

Faktor 1, u

Reserve

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Smart Weather Sensor Type Code
WS100-UMB

WS303-UMB

WS200-UMB

WS304-UMB

WS300-UMB

WS310-UMB

WS400-UMB

WS501-UMB

WS500-UMB

WS502-UMB

WS600-UMB

WS503-UMB

WS700-UMB

WS504-UMB

WS800-UMB

WS510-UMB

WS301-UMB

WS401-UMB

WS302-UMB

WS601-UMB

Sensor Status:
Each register hoIds 4 sensor status coded with 4 bits per status, so that together they build
one 16bit number. The sequence defined in the table above is to understand as from most
significant half byte to least significant half byte. Most of the sensors have two status values,
one for the sensor itself and the current measurement value, another one for the buffer, from
which average, min. And max values are evaluated.
Assignment of Status Information to Status Register
Register

Byte

High
Sensor Status 1
Low

High
Sensor Status 2
Low

High
Sensor Status 3
Low

High
Sensor Status 4
Low

High
Sensor Status 5
Low

High
Sensor Status 6
Low

134

HalfByte

Status

High

Temperature Buffer

Low

Temperature

High

Dewpoint Buffer

Low

Dewpoint

High

Rel. Humidity Buffer

Low

Rel. Humidity

High

Abs. Humidity Buffer

Low

Abs. Humidity

High

Mixing Ratio Buffer

Low

Mixing Ratio

High

Air Pressure Buffer

Low

Air Pressure

High

Wind Buffer

Low

Wind

High

Precipitation

Low

Compass

High

Global Radiation Buffer

Low

Global Radiation

High

reserved

Low

reserved

High
Low

External Temperature

High

Lightning Sensor Buffer

Low

Lightning Sensor

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Low Byte
High
Low

Temperatur
e

Dew pointBuffer

Dew point

High Byte
High
Low
Temperatur
e-Buffer

Example Sensor Status 1:
Temperature buffer status, temperature status, dewpoint buffer status, dewpoint status

The example values above (for illustration only, the given combination will not occur in
reality) are combined to the register value 0x5307 = 21255.
The single status are retrieved from the register as integer part of
Status 1
= register / 4096
Status 2
= (register / 256) AND 0x000F
Status 3
= (register / 16) AND 0x000F
Status 4
= register AND 0x000F
Following table shows the status coding:
Coding of Sensor Status:
Sensor State

Code

UNGLTG_KANAL

E2_CAL_ERROR
E2_CRC_KAL_ERR
FLASH_CRC_ERR
FLASH_WRITE_ERR
FLASH_FLOAT_ERR

MEAS_ERROR,
MEAS_UNABLE

INIT_ERROR

VALUE_OVERFLOW
CHANNEL_OVERRANGE
VALUE_UNDERFLOW
CHANNEL_UNDERRANGE

BUSY

Other Sensor State

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19.8 Communication: XDR Protocol
Note: XDR protocol is not available for WS100-UMB.
The XDR protocol allows to transmit a selected data set of the Smart Weather Sensor in a
NMEA compatible format. The data telegram can be transmitted on request, or the Smart
Weather Sensor can be set into auto transmit mode, where the data telegram will be
triggered automatically at an selectable interval.
A set of ASCII configuration messages allows to apply some configuration settings without
leaving the XDR protocol.
For configuration settings exceeding this command set use the UMB Config Tool. To change
into the UMB protocol a UMB message must be addressed to the device within 5 seconds
after power up or reset.

Figure 45: Sensor
Configuration XDR

Protocol
Automatic telegram output
Air pressure mode
Output Interval NMEA
NMEA talker device identifier

136

XDR protocol selected
activate continous mode (automatic result
message transmission)
select absolute or relative air pressure for the
measurement data message (seconds)
Interval for automatic result message transmission
Select the Talker ID part of the NMEA telegram
header

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19.8.1 Basic Interface Properties





Baud rate configurable from 1200bps to 57600bps, character format 8 bits, no parity,
1 stop bit (8N1).
Unit ID equal to UMB device ID, but limited to 98. 99 is the broadcast ID
Data output on request or continuously (configurable)
Commands and messages use strictly ASCII text mode

19.8.2 Message Format for Commands and Responses

Byte
0

'*'

Start Character

1,2

'01'

Destination ID

3,4

'00'

Source ID

5 ... n
n+1, n+2

Command Data (min. 2)
Termination Characters

The command data field always starts with the 2-character command identifier, optionally
followed by a parameter, starting with '='.
Currently implemented commands are
 P9
single measurement XDR format
 PP
start continuous measurement XDR format
 PB
single measurement PWSD format
 PC
start continuous measurement PWSD format
 GW
option: add MWD sentence (wind data) to XDR format
 MI
continuous measurement interval
 J3
pressure mode (absolute air pressure / relative air pressure)
 JS
pressure sensor elevation
 JW
spot or average output of wind data
 BR
baud rate
 ID
unit ID
 NH
message prefix
If the device receives an invalid command (missing start or termination character, invalid ID,
invalid structure etc.), it will not respond.
If a setting command contains an invalid parameter value, the device will not respond.
Setting commands must usually be preceded by the “Write Enable” command EW. This
command does not generate a response, and may be, different from other commands,
transmitted without message terminators (). I.e. the write enable and the set
command may be concatenated without terminators between the commands.
Example:
0100EW*0100J3=1
and
0100EW*0100J3=1
are both valid command sequences for setting the pressure mode.
Setting commands not requiring a preceding write enable are marked in the command
description.

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19.8.3 Message Format for Measurement Data XDR
The message format for P9 / PP measurement data follows the definition for NMEA WI
(weather instrument) XDR messages.
The message is field oriented, with variable length. The fields are separated by ','.
Message format:
$hhhhh,P,x.xxxx,B,0,C,yy.y,C,0,H,zz.z,P,0
$hhhhh
,
P
,
x.xxxx
,
B
,
0
,
C
,
yy.y
,
C
,
0
,
H
zz.z
,
P
,
0

Message header, default $WIXDR (WI : Talker identifier “weather
instruments”, XDR: sentence identifier “transducer measurements”) *)
separator
transducer type “pressure”
separator
air pressure value in Bar
separator
unit: bars (= hPa)
separator
Transducer ID, set to 0
separator
transducer type temperature
separator
temperature in °C
separator
unit: °C
separator
Transducer ID, set to 0
separator
transducer type humidity
relative humiditiy in %
separator
unit: %
separator
Transducer ID, set to 0
sentence terminator

*) The message header can be modified. The UMB config tool allows modifying the talker ID
bytes. The XDR setting command NH allows changing the complete message header. The
leading '$' is fixed and can not be modified.

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19.8.4 Message Format for Measurement Data MWD
The P9 / PP measurement data transmission can be optionally extended by a MWD
sentence containing wind data. The MWD sentence follows the definition for NMEA WI
(weather instrument) messages.
This option can be activated or deactivated by the GW command.
The JW command selects between spot value and average value output of wind data.
The message is field oriented, with variable length. The fields are separated by ','.
Message format:
$hhhhh, aaa.a,T,bbb.b,M,cc.c,N ,dd.d,M
$hhhhh
,
aaa.a
,
T
,
bbb.b
,
M
,
cc.c
,
N
,
dd.d
,
M

Message header, default $WIMWD (WI : Talker identifier “weather
instruments”, MWD: sentence identifier “wind measurements”) *)
separator
wind direction in °”
separator
identifier “True North”
separator
wind direction in °
separator
identifier “Magnetic Nord”
separator
wind speed in knots
separator
unit: kts
separator
wind speed in m/s
separator
unit: m/s
sentence terminator

*) The message header can be modified. The MWD sentence uses the same talker ID as the
XDR sentence, which can be modified by the UMB config tool or the XDR setting command
NH. The leading '$' is and the identifier MWD are fixed and can not be modified
**) here wind direction “true” and wind direction “magnetic” are identical.

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19.8.5 Message Format for Measurement 0R0
The 0R0 sentence format is a proprietary format similar to NMEA 0183 rules. The 0R0
sentence contains essential measurement values of the compact weather station and is
designed for compatibility with existing installations.
The sentence is requested by the PB command for single measurement and PC for cyclic
transmission.
If certain measurement values are not available for the subtype of the individual weather
station the related value will be replaced by 999999. The same applies for measurement
values with status not “OK”.
The message is field oriented, with variable length. The fields are separated by ','.
Message Format:
0R0,Dm=aaaD,Sm=bb.bM,Ta=cc.cC,Ua=dd.dP,Pa=e.eeeeB,Rc=f.ffM, Pt=ggN
0R0
,
Dm
=
aaa
D
,
Sm
=
bb.b
M
,
Ta
=
cc.c
C
,
Ua
=
dd.d
P
,
Pa
=
e.eeee
B
,
Rc
=
ff.ff
M
,

140

message header
separator
identifier wind direction
separator
wind direction in °
unit °
separator
identifier wind speed
separator
wind speed in m/s
unit m/s
separator
identifier air temperature
separator
air temperature in °C
unit: °C
separator
identifier relative humidity
separator
relative humidity in %
unit %
separator
identifier air pressure
separator
air pressure in Bar
unit Bar
separator
identifier precipitation difference
separator
precipitation difference (related to last transmission) in mm
unit mm
separator

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Pt
=
gg
C

identifier precipitation type
separator
precipitation code (00 no precip., 60 rain, 70 snow)
unit: Code
sentence terminator

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19.8.6 Measurement Commands
Command Examples are shown for unit ID 01
19.8.6.1 Single Measurement XDR format
Command identifier:
P9
Parameter:
none
Command example:
Command: *0100P9
Response (wind data not activated):
$WIXDR,P,,B,0,C,,C,0,H,,P,0
Response (wind data activated):
$WIXDR,P,,B,0,C,,C,0,H,,P,0
$WIMWD,,T, < wind direction °>,M,,N ,< wind speed
m/s>,M
Serial numbers of pressure and T/H sensor are not available and set to 0.

19.8.6.2 Continuous Measurement XDR format
Command identifier:
PP
Parameter:
none
Command example:
Command *0100PP
After this command the device will start to transmit the result message as defined in for the
single measurement automatically with the interval defined by the transmission interval
command (see 19.8.7.1) or set by the UMB Config Tool.
The default interval is 60 seconds, minimum allowed interval is 10sec, maximum interval is
43200sec (=12h).
The continuous mode will be stored in the E2PROM of the device, so that after a reset the
device will continue to transmit automatically.
The continuous mode is terminated by a Single Measurement Command (19.8.6.1,
19.8.6.3).
19.8.6.3 Single Measurement 0R0 Format
Command identifier:
PB
Parameter:
none
Command example:
Command *0100PB
Response:
0R0,Dm=D,Sm=M,Ta=C,Ua=P,Pa=B,Rc=M, Pt=N

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19.8.6.4 Continuous Measurement 0R0 Format
Command identifier:
PC
Parameter:
none
Command example:
Command *0100PC
After this command the device will start to transmit the result message as defined in for the
single measurement automatically with the interval defined by the transmission interval
command (see 19.8.7.1) or set by the UMB Config Tool.
The default interval is 60 seconds, minimum allowed interval is 10sec, maximum interval is
43200sec (=12h).
The continuous mode will be stored in the E2PROM of the device, so that after a reset the
device will continue to transmit automatically.
The continuous mode is terminated by a Single Measurement Command (19.8.6.1,
19.8.6.3).

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19.8.7 Configuration Commands
Command Examples are shown for unit ID 01
19.8.7.1 Transmission Interval for Continuous Measurement
Command identifier:
MI
Parameter:
interval in seconds (min. 10, max. 43200, default 60)
Request command example:
Command: *0100MI
Response: *0001MI=60
The command requests the current setting of the result transmission interval
Setting command example (to be preceded by the write enable command)
Command: *0100MI=60
Response: *0001MI=60
The command sets the interval for automatic measurement result transmission (19.8.6.2) in
seconds.
19.8.7.2 Option Append Wind Data (MWD) to XDR Sentence
Command identifier:
GW
Parameter:
0 = wind data off, 1 = wind data on
Request command example:
Command: *0100GW
Response: *0001GW=0
The command requests the current setting of the wind data option.
Setting command example (to be preceded by the write enable command)
Command: *0100GW=1
Response: *0001GW=1
The command sets the wind data option.
19.8.7.3 Select Spot Values or Average Values of Wind Data
Command identifier:
JW
Parameter:
0 = wind data spot values, 1 = wind data average values
Request command example:
Command: *0100JW
Response: *0001JW=1
The command requests the current setting of the wind data average setting.
Setting command example (to be preceded by the write enable command)
Command: *0100JW=0
Response: *0001JW=0
The command sets the wind data average or spot transmission.

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19.8.7.4 Pressure Mode Selection Command
Command identifier:
J3
Parameter:
0 = absolute pressure, 1 = relative pressure
Selects, if the absolute or relative (sea level) air pressure is transmitted in the measurement
value message (0). For correct function of the conversion to relative (sea level) pressure it is
essential, that the sensor elevation has been set correctly (JS command (19.8.7.5) or UMB
Config Tool)
Request command example:
Command: *0100J3
Response: *0001J3=1<>LF>
Requests the current pressure mode
Setting command example (to be preceded by the write enable command):
Command: *0100J3=0
Response: *0100J3=0
Sets the pressure mode:
0
absolute air pressure
1
relative air pressure

19.8.7.5 Sensor Elevation Setting Command
Command identifier:
JS
Parameter:
sensor elevation (above sea level) in m
Remark: the sensor elevation may be entered as integer value or as fixed point value, the
sensor will round the value for internal storage to integer (full meters).
Request command example:
Command: *0100JS
Response: *0001JS=353
Requests the current elevation setting
Setting command example (to be preceded by the write enable command):
Command: *0100JS=82 or *0100JS=82.3
Response: *0001JS=82
Sets the elevation of the sensor above sea level in m (range -100m to 5000m)

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19.8.7.6 NMEA Message Prefix Setting Command
Command identifier:
NH
Parameter:
complete NMEA Header ('$' + max. 6 char)
Note: The parameter must always start with the '$' character. This character is nevertheless
fixed and will not be modified.
Request command example:
Command: *0100NH
Response: *0001NH=$WIXDR
Requests the current header of the NMEA measurement value sentence
Setting command example (to be preceded by the write enable command):
Command: *0100NH=$WIXDR
Response: *0001NH=$WIXDR
Sets the prefix of the NMEA measurement value

19.8.7.7 Baud Rate Setting Command
Command identifier:
BR
Parameter:
Baudrate (1200, 2400, 4800, 9600, 19200, 28800, 38400,
57600)
Note: this command only provides the set mode and is only valid with the broadcast
destination ID 99.
After execution of the command the Smart Weather Sensor will perform a reset and then
start with the new baudrate.
The command does not require to be preceded by the write enable command.
Setting command example:
Command: *9900BR=9600
Response: *9900BR=9600
Sets the baud rate
19.8.7.8 Unit ID Setting Command
Command identifier:
ID
Parameter:
none
Note: This command does not accept a separate parameter, but uses the source ID of the
address fields as input. The ID of the device is set to (source ID + 1). Source ID values 0 ...
97 are allowed.
The command only provides the set mode and is only valid with the broadcast destination ID
99.
After execution of the command the Smart Weather Sensor will perform a reset and then
start with the new unit ID.
The command does not require to be preceded by the write enable command.
Setting command example:
Command: *9900ID
Response: *9901ID
Sets the unit ID to source ID + 1

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19.8.7.9 Write Enable Command
Command identifier:
EW
Parameter:
none
This command is intended to protect the device from accidental setting modifications and
must precede most of the setting commands.
The command is not available as request command and does not generate a response.
This command is valid with and without termination characters.
Command example:
*0100EW
or
*0100EW

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20 List of Figures
Figure 1: Sensor Technology ................................................................................................................................................................. 13
Figure 2: Fastening to the Mast.............................................................................................................................................................. 23
Figure 3: North Markings ....................................................................................................................................................................... 24
Figure 4: Alignment to North .................................................................................................................................................................. 24
Figure 5: Installation Sketch ................................................................................................................................................................... 26
Figure 6: Connections ............................................................................................................................................................................ 27
Figure 7: Connection to ISOCON-UMB .................................................................................................................................................. 29
Figure 8: Sensor Selection ..................................................................................................................................................................... 32
Figure 9: General Settings ..................................................................................................................................................................... 33
Figure 10: Temperature, Humidity and Fan Settings .............................................................................................................................. 33
Figure 11: Pressure Settings .................................................................................................................................................................. 34
Figure 12: Wind Settings ........................................................................................................................................................................ 34
Figure 13: Precipitation Sensor Settings (Radar) ................................................................................................................................... 35
Figure 14: Precipitation Sensor Settings (Rain Gauge) .......................................................................................................................... 35
Figure 15: Global Radiation Settings ...................................................................................................................................................... 36
Figure 16: Lightning Sensor Settings ..................................................................................................................................................... 36
Figure 17: Energy Management Settings ............................................................................................................................................... 36
Figure 18: Reset Precipitation Quantity .................................................................................................................................................. 37
Abb. 19: Select operation mode „Simulated Rain Gauge“ ...................................................................................................................... 38
Abb. 20: Configure the resolution of the simulated rain gauge................................................................................................................ 38
Figure 21 Measurement Polling Channels.............................................................................................................................................. 39
Figure 22 Example of Measurement Polling ........................................................................................................................................... 39
Figure 23: Operating Modes for Equipment Heating............................................................................................................................... 42
Figure 24: WS601-UMB with removed funnel ........................................................................................................................................ 45
Figure 25: WS100-UMB ......................................................................................................................................................................... 51
Figure 26: WS200-UMB ......................................................................................................................................................................... 51
Figure 27: WS200-UMB ......................................................................................................................................................................... 52
Figure 28: WS301-UMB ......................................................................................................................................................................... 53
Figure 29: WS310-UMB ......................................................................................................................................................................... 54
Figure 30: WS400-UMB ......................................................................................................................................................................... 55
Figure 31: WS401-UMB ......................................................................................................................................................................... 56
Figure 32: WS500-UMB ......................................................................................................................................................................... 57
Figure 33: WS501-UMB ......................................................................................................................................................................... 58
Figure 34: WS510-UMB ......................................................................................................................................................................... 59
Figure 35: WS600-UMB ......................................................................................................................................................................... 60
Figure 36: WS601-UMB ......................................................................................................................................................................... 61
Figure 37: WS700-UMB, WS800-UMB .................................................................................................................................................. 62
Figure 38: Setting type of external sensor .............................................................................................................................................. 67
Figure 39: Example WS501-UMB and WTB100 ..................................................................................................................................... 68
Figure 40: Sensor Configuration SDI-12 ................................................................................................................................................ 81
Figure 41: Sensor Configuration SDI-12 Units........................................................................................................................................ 81
Figure. 42: Connecting to a logger with integrated power supply ............................................................................................................ 82
Figure. 43: Connecting to a logger and a separate power supply up to device version 41 ................................................................... 82
Figure. 44: Connecting to a logger and a separate power supply device version 42 and newer .......................................................... 82
Figure 45: Sensor Configuration XDR .................................................................................................................................................. 136

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21 Index
Installation .............................................................................. 23

A
Accessories ............................................................................. 9

Installation Location................................................................ 25

Accuracy ................................................................................ 48

Interface ........................................................................... 28, 47
ISOCON-UMB ........................................................................ 29

Air Density ....................................................................... 11, 16
Air Pressure ..................................................................... 11, 15

Air Temperature ..................................................................... 10
Altitude................................................................................... 34

Local Altitude ......................................................................... 34

ASCII-Protokoll ...................................................................... 75

Maintenance .......................................................................... 44

Measurement Output.............................................................. 15
Binary Protocol....................................................................... 72

Measurement Polling (UMB-Config-Tool) ............................... 39
Measurement Values ............................................................. 14

C
Certificate of Conformity ......................................................... 63

Measuring Range ................................................................... 48

Channel List ........................................................................... 69

Modbus ................................................................................ 124

Channel List per TLS2002...................................................... 71

Class ID ........................................................................... 72, 73
Commissioning ...................................................................... 30

North Alignment ..................................................................... 24

Communication ...................................................................... 78

Operating Conditions.............................................................. 47

Communication ...................................................................... 75

Operating Modes.................................................................... 40

Communication .................................................................... 124
Communication .................................................................... 136

Order Numbers ........................................................................ 7

Compass ....................................................................11, 18, 34

Power Saving Mode ......................................................... 40, 74

Configuration ......................................................................... 31

Power Supply Unit .................................................................. 28

Connections ........................................................................... 27

Precipitation ..................................................................... 11, 19

Protection type ....................................................................... 47
Data Request ......................................................................... 72

Declination ............................................................................. 34

Relative Air Pressure.............................................................. 34

Delivery Status ....................................................................... 32
Designated Use ....................................................................... 5
Device ID ......................................................................... 72, 73

Reset Precipitation Quantity ................................................... 37

S
Safety Instructions .................................................................... 5

Dimensions ............................................................................ 46

Scope of Delivery ..................................................................... 6

Disposal ................................................................................. 66

SDI-12 Mode .......................................................................... 81

Distance between objects ...................................................... 25

Sensor Technology ................................................................ 13

Drawings ................................................................................ 51

Storage Conditions ................................................................. 47

Supply Voltage ................................................................. 27, 28
Energy Management .............................................................. 36
Enthalpy........................................................................... 11, 16
Error Codes ..................................................................... 74, 77

Symbols Used .......................................................................... 5

T
Technical Data ....................................................................... 46

External Rain Gauge ........................................................ 12, 67

Technical Support .................................................................. 66

External Sensors.................................................................... 27

Temperature .......................................................................... 15

External Temperature Sensor .......................................... 11, 67

Terminal-Mode ....................................................................... 78

Test ........................................................................................ 31
Factory Settings ..................................................................... 32
Fan ........................................................................................ 33
Fault Description .................................................................... 65
Firmware Update ................................................................... 44

U
UMB-Config-Tool ............................................................. 32, 39

W
Warranty ............................................................................ 5, 66

Weight.................................................................................... 47

Global Radiation .............................................................. 11, 20

Wet Bulb Temperature ........................................................... 16

WetBulb Temperature ............................................................ 11
Heating ............................................... 11, 20, 27, 28, 29, 42, 46
Humidity........................................................................... 10, 15

Wind................................................................................. 11, 17

X
XDR Protocol ....................................................................... 136

Incorrect Use ........................................................................... 5

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Source Exif Data: 
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File Type Extension             : pdf
MIME Type                       : application/pdf
PDF Version                     : 1.5
Linearized                      : No
Page Count                      : 153
Language                        : de-DE
Tagged PDF                      : Yes
Title                           : Operating Manual WS200-UMB WS300-UMB WS301-UMB WS400-UMB WS500-UMB WS501-UMB WS600-UMB
Author                          : Simon Eberle
Subject                         : Compact Weather Station Fa. G. Lufft Mess- und Regeltechnik GmbH
Keywords                        : Compact, Weather, Station, WS200-UMB, WS300-UMB, WS301-UMB, WS400-UMB, WS500-UMB, WS501-UMB, WS600-UMB
Creator                         : Microsoft® Office Word 2007
Create Date                     : 2017:05:04 09:46:46+02:00
Modify Date                     : 2017:05:04 09:46:46+02:00
Producer                        : Microsoft® Office Word 2007

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Operating Manual WS200 UMB WS300 WS301 WS400 WS500 WS501 WS600 WSx V35 En

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