Calypso Instruments ULP NMEA 2000 User manual

ULTRA-LOW-POWER ULTRASONIC
STD (ULP STD) WIND METER
User manual
CALYPSO
0809
R
English version 1.0
26.04.2022
ULTRASONIC Portable
User manual
www.calypsoinstruments.com

If you want to know more about our new ULP STD wind meter, please keep reading or visit our website www.calypsoinstruments.com

ULP STD User manual
03/09
0. Index
1. Product overview
2. Package content
3. Technical specifications
3.1.Dimensions
3.2.Weight
3.3. Power
3.4.Sensors
3.5. Wind information
3.6. Easy mount
3.7. Mounting accessories
3.8. Firmware
3.9. Product material
3.10. Quality Control
4. Configuration Options
5. Communication Protocols
6. General Information
6.1. General recommendations
6.2. Maintenance and repair
6.3 Warranty
1. Product overview
Thank you for choosing the ULP STD wind meter
from Calypso Instruments. This is the first model or
our generation II, representing an important
technology breakthrough condensing an extensi-
ve R+D investment:
· Both shape and firmware have been enhanced
for an improved rain performance. This is key for
static applications such as weather stations.
· Mechanical design has been revamped making
the unit more robust and dependable.
· We feel very proud to release a unit that requires
under 0.4 mA of power at 5V, sampling at 1Hz.
· Different output options available: RS485, UART/-
TTL, MODBUS and NMEA 2000.
Applications for the ULP STD are the following:
Weather Stations | Drones
Temporary Scaffolding and construction | Infras-
tructures and building | Cranes
Spraying | Irrigation | Fertilizing | Precision Agricul-
ture
Smart Cities | Wild fires | Shooting | Scientific
Sailing.
2. Package content
The package contains the following:
· Ultrasonic ULP STD Wind Instrument plus 2 meter
(6.5 ft) cable for connection*
· Serial number reference on the side of the packa-
ging.
· A quick user guide on the back of the packaging
and some more useful information for the custo-
mer.
· M4 headless screw (x6) *
· M4 screw (x3)*
*Non applicable to the ULP NMEA 2000 model.

3. Technical specifications
The ULP has the following technical specifications:
The ULP STD has to be connected as shown in this
section.
3.1. Dimensions · Diameter: 68 mm (2.68 in.)
· Height: 65 mm (2.56 in.)
3.2. Weight 210 grams (7.4 ounces)
3.3 Power · 3.3-1 VDC
· 6-15VDC (NMEA 2000)
3.4. Ultrasonic transducers (4x)
Sample rate: 0.1 Hz to 10 Hz
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ULP STD User manual
03/09
65 mm
1Autotransmit
2-POLL telegram
3-MODBUS
NMEA0183
2400 to 115200 bauds
3.3-18V
Data interface
Data format
Baudrate
Voltage range
RS485/MODBUS RTU Output:
,
UART/TTL Output:
Power consumption:
Ultra-Low-Power (RS485 NMEA0183) : 0,25mA @5V, 1Hz
/ (MODBUS) : 1 mA @5V,1 Hz.
Ultra-Low-Power (UART / I2C ): 0,15 mA @5V, 1Hz.
Ultra-Low-Power NMEA 2000: 20 mA @115.200
bauds, 12V.
The ULP has been designed to avoid any mechani-
cal parts to maximize reliability and minimize
maintenance.
The transducers communicate between themsel-
ves two by two using ultrasonic range waves. Each
pair of transductors calculates the signal delay
and get information about both wind direction
and wind speed.
Brown
VCC (Power +)
White
GND (Power -)
Green
DATA Tx
Yellow
DATA Rx
Brown
VCC (Power +)
White
GND (Power -)
Green
DATA (A +)
Yellow
DATA (B -)

3. Technical specifications
Sample rate: 1 Hz
Wind Speed
Range : Range: 0 to 45 m/s (1.12 to 100 mph)
Accuracy: ±0.1 m/s at 10m/s (0.22 at 22.4 mph)
Threshold: 1 m/s (2.24 mph)
Wind direction
Range: 0 - 359º
Accuracy: ±1º
It can be mounted either on a plate (inferior screws) or on
a tube (lateral screws).
A wide range of accessories can be used with the device.
The ULP STD can be mounted on a flat service and
screwed on to different sizes of poles. It can also be used
with an adaptor for poles of 39 mm.
* Please, visit our website and check all the accessories
available and their possible combinations.
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ULP STD User manual
3.5 Wind Information · Wind speed
· Wind direction
3.7. Mounting accessories
3.6. Easy mount - 3 x M4 lateral female tripod thread
- 3 x M4 base female tripod thread
UNC 1/4” - 20
Noth mark position
Make sure the north mark
is perfectly aligned to the
north.
*Non applicable to the ULP NMEA 2000 model.
*Non applicable to the ULP NMEA 2000 model.

The ULP STD is engineered to be a robust device with
minimal downtime. This new shape has been
designed for optimum water spillage which implies
lower probability of ice formation. Frost might
affect measurements if it blocks the wave path.
The input wires are protected by Transient Voltage
Suppression (TVS) diodes. The instrument
body is built with Polyamide.
Every single unit is calibrated with accuracy, following the
same calibration standards for each one in a
wind tunnel.
A Q/C report for both wind speed and direction is genera-
ted and kept in our files. Standard deviation is checked to
guarantee that each unit has been calibrated to the
highest standards.
4. Configuration Options
*Non applicable to the ULP NMEA 2000 model.
The ULP STD can be set up by using a special configura-
tion app made by Calypso Instruments.
In order to use the app, you should download the
configurator from our website at
www.calypsoinstruments.com.
To configure your device, connect the ULP via either a USB
to RS485 converter cable (in case of the ULP RS485 or the
ULP Modbus) or via a USB to UART converter cable (in
case of the ULP UART). Connect all the ULP cables except
for the brown cable to the converter. Insert the USB into
the computer, open the configurator app, select the confi-
guration wanted and follow the instructions on the screen
to finish the configuration.
For more information, please watch the following video.
https://bit.ly/3DuA7lM
*USB converter cables available on calypsoinstruments.-
com.
05/09
ULP STD User manual
NEW!
06/09
Upgradable via RS485, MODBUS ,
UART/TTL or NMEA 2000.
3.9 Product Material
3.10 Quality Control
baudrate:
output rate:
output units:
0.1 to 10 Hertz
m/sec., knots or km/h
2400 to 115200 (8n1) bauds
3.8. Firmware

Write Register
(continuation)
2 bytes, the I2C bus direction and the register you need to
check.
I2C Address (1 Byte) + Register Address (1 Byte)
Address -0x15 (21 decimal)
Available Registers:
Wind Raw Stat - 0x10
Wind 2 Min Stat - 0x12
Wind 5 Min Stat - 0x15
Wind 10 Min Stat - 0x1A
Wind Full Stats - 0x1F
Read Register
For the read register we need to take into account how
many bytes is the system giving us back and what bytes
we need to read in order to obtain the value we need.
Data are under big-endian criteria. The first byte, the more
valuable one to be represented.
E.g. If 2 bytes are read, byte 0 and byte 1, we will read the
first byte as 0x05 and second byte 0x0A.
0x05 0x0A
The first byte is marked in orange. The more valuable one.
The second byte is marked in blue ( less significant one
LSB).
Write Wind Raw Register Return 7 Bytes
Bytes 0 – 1 -Unused
Bytes 2 – 3 -Wind Speed * 100
Bytes 4 – 5 -Wind Direction * 100
Byte 6 -Checksum
Write Wind 2 Min Stat Register Return 11 Bytes
Bytes 0 – 1 -Unused
Bytes 2 – 3 - Wind Speed * 100
Bytes 4 – 5 -Wind Direction * 100
Bytes 6 – 7 - Wind Speed Gust * 100
Bytes 8 – 9 - Wind Direction Gust * 100
Byte 10 - Checksum
Write Wind 5 Min Stat Register Return 11 Bytes
Bytes 0 – 1 - Unused
Bytes 2 – 3 - Wind Speed * 100
Bytes 4 – 5 - Wind Direction * 100
Bytes 6 – 7 - Wind Speed Gust * 100
Bytes 8 – 9 - Wind Direction Gust * 100
Byte 10 - Checksum
Write Wind 10 Min Stat Register Return 11 Bytes
Bytes 0 – 1 -Unused
Bytes 2 – 3 -Wind Speed * 100
Bytes 4 – 5 -Wind Direction * 100
Bytes 6 – 7 -Wind Speed Gust * 100
Bytes 8 – 9 - Wind Direction Gust * 100
Byte 10 - Checksum
5. Communication Protocols
*Non applicable to the ULP NMEA 2000 model.
5.1 Modbus Registers
DIR_BASE_LA1 30001
SYSTEM_STATUS DIR_BASE_LA1 + 200
WIND_SPEED DIR_BASE_LA1 + 201
WIND_DIRECTION DIR_BASE_LA1 + 202
TWO_MIN_AVG_WS DIR_BASE_LA1 + 203
TWO_MIN_AVG_WD DIR_BASE_LA1 + 204
TEN_MIN_AVG_WS DIR_BASE_LA1 + 205
TEN_MIN_AVG_WD DIR_BASE_LA1 + 206
WIND_GUST_SPEED DIR_BASE_LA1 + 207
WIND_GUST_DIR DIR_BASE_LA1 + 208
FIVE_MIN_AVG_WS DIR_BASE_LA1 + 210
FIVE_MIN_AVG_WD DIR_BASE_LA1 + 211
FIVE_WIND_GUST_SPEED DIR_BASE_LA1 + 212
FIVE_WIND_GUST_DIR DIR_BASE_LA1 + 213
5.2 RS485 and UART Sentences
MWV Wind Speed and Angle
1 2 3 4 5
| | | | |
$--MWV,x.x,a,x.x,a*hh
1) Wind Angle, 0 to 360 degrees
2) Reference, R = Relative, T = True
3) Wind Speed
4) Wind Speed Units, K/M/N
5) Status, A = Data Valid
6) Checksum
MWV Sentence 38400bps 8N1
The connection is straightforware with no configuration
required.
The hardware interface is RS485, 4800bps, 8N1. The
logical interface NMEA0183 has MWV ASCII simple
phrases with direction and wind speed being the following:
$IIMWV,316,R,06.9,N,A*18
$IIMWV,316,R,06.9,N,A*18
$IIMWV,316,R,06.8,N,A*19
$IIMWV,316,R,06.8,N,A*19
$IIMWV,316,R,06.8,N,A*19
5.3 I2C Sentences
General Options
Address I2C-0x15 ( 21 decimal )
Frecuency -100kHz – 400kHz
SDA -TX (Yellow)
SCL - RX (Green)
Write Register
In order to write about the register it is necessary to write
ULP STD User manual
07/09
00000101 00001010

6.2. Maintenance and repair
(continuation)
The space around the transducers must be empty and
clean. Dust, frost, water, etc... will make the unit s top
working.
The ULP can be wiped clean with a damp cloth being
careful to not touch the transducers.
3. Warranty
This warranty covers the defects resulting from defective
parts, materials and manufacturing, if such defects are
revealed during the 24 months after the purchase date.
Warranty is void in case of non-following the instructions
of use, repair or maintenance without written authorisa-
tion.
Any wrongful use given by the user will not incur in any
responsibility on part of Calypso Instruments. Therefore,
any harm caused to the ULP by a mistake will not be cove-
red by the warantee. Using assembly elements different
from those delivered with the product will void the guaran-
tee.
by the warantee. Using assembly elements different from
those delivered with the product will void the guarantee.
Changes on transducers position/alignment will avoid any
warranty.
For further information please contact Calypso Technical
Support through [email protected]
or visit www.calypsoinstruments.com.
Write Wind Full Stat Register Return 31 Bytes
Bytes 0 – 1 -Unused
Bytes 2 – 3 - Wind Speed Raw * 100
Bytes 4 – 5 -Wind Direction Raw * 100
Bytes 6 – 7 - Wind Speed 2 Min Stat * 100
Bytes 8 – 9 - Wind Direction 2 Min Stat * 100
Bytes 10 – 11 - Wind Speed Gust 2 Min Stat * 100
Bytes 12 – 13 - Wind Direction Gust 2 Min Stat * 100
Bytes 14 – 15 - Wind Speed 5 Min Stat * 100
Bytes 16 – 17 - Wind Direction 5 Min Stat * 100
Bytes 18 – 19 - Wind Speed Gust 5 Min Stat * 100
Bytes 20 – 21 - Wind Direction Gust 5 Min Stat * 100
Bytes 22 – 23 - Wind Speed 10 Min Stat * 100
Bytes 24 – 25 - Wind Direction 10 Min Stat * 100
Bytes 26 – 27 - Wind Speed Gust 10 Min Stat * 100
Bytes 28 – 29 - Wind Direction Gust 10 Min Stat * 100
Byte 30 - Checksum
6. General information
6.1. General recommendations
Wind Speed Gust is that value that measures abrupt and
sudden change in wind speed.
Regarding mounting the unit, align the north mark of the
ULP towards the north.
Regarding mounting the unit, the mast head has to be
prepared for the mechanical installation. Align the North
mark of the Ultrasonic Ultra-Low-Power to the north. Make
sure to install the sensor in a location free from wind
perturbation, usually on the mast head.
Make sure to install the sensor in a location free from
anything that obstructs the flow of wind to the sensors
within a 2 meter radius, for example, the mast head on a
boat.
Other important aspects:
- Do not attempt to access the transducers area with your
fingers;
- Do not attempt any modification to the unit;
- Never paint any part of the unit or alter its surface in any
way.
- NOT allow to be submerged fully or partially in water.
If you have any questions or doubts, please contact us
directly.
6.2. Maintenance and repair
The ULP does not require great maintenance thanks to the
lack of the moving parts in this new design.
Transducers must be kept clean and aligned. Impacts or
incorrect impulsive handling may lead to transducers
misalignment.
ULP STD User manual
08/09

ULP STD User manual
MODBUS Sensor Data Requests
Measurements all have a resolution of 0.1 but are reported as 10*.
8.2 m/s is returned as a value 82. The user must /10 in order to reinsert the
decimal precision.
Address
Register
Access
Type
Response
Range
Data
Type
Description
200
201
Read
0 to 15†
16
-
bit
Signed
Int
System
Status†
201
202
Read
0 to 500*
16
-
bit
Signed
Int
Wind speed
(m/s) (3
second
moving
average)
202
203
Read
0 to 3599*
16
-
bit
Signed
Int
Wind
direction (°)
(3 second
moving
average)
203
204
Read
0 to 500*
16
-
bit
Signed
Int
2 min avg
wind speed
204
205
Read
0 to 3599*
16
-
bit
Signed
Int
2 min avg
wind
direction
205
206
Read
0 to 500*
16
-
bit
Signed
Int
10 min avg
wind speed
206
207
Read
0 to 3599*
16
-
bit
Signed
Int
10 min avg
wind
direction
207
208
Read
0 to 500*
16
-
bit
Signed
Int
Wind gust
speed
208
209
Read
0 to 3599*
16
-
bit
Signed
Int
Wind gust
direction
210
2
11
Read
0 to 500*
16
-
bit
Signed
Int
5
min avg
wind speed
211
2
12
Read
0 to 3599*
16
-
bit
Signed
Int
5
min avg
wind
direction
212
2
13
Read
0 to 500*
16
-
bit
Signed
Int
5
min
Wind
gust speed
213
2
14
Read
0 to 3599*
16
-
bit
Signed
Int
5
min
Wind
gust
direction
† If not applicable to ULP-M, the register should report a value of zero (0).
* See Data Format section for numeric conversions.
09/09

Ultra-Low-Power Ultrasonic wind meter STD (ULP STD)
User manual English version 2.0
26/04/2023