LINOVISION IOT-S300WS7 7 In 1 Weather Station User Guide

: June 1, 2024
: LINOVISION

Table of Contents

LINOVISION IOT-S300WS7 7 In 1 Weather Station
Product Introduction
Installation
Device’s Operating Mode
Communication Protocols
Error code
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

LINOVISION IOT-S300WS7 7 In 1 Weather Station

Specifications

Product Model: IOT-S300WS7 (7-in-1 Weather Station)
Power Supply: 12V~24V
Heating Power Supply: 24V 21W
Support Protocols: RS485 (MODBUS-RTU) / SDI-12
IP Rating: IP66
Working Temperature: -40°C to +85°C
Working Humidity: 0 to 100%RH (non-condensing)
Rain Intensity: Measures rain intensity

Installation
Before installation, check the packing list to ensure all parts are present.

Packing List

Linvovision ONE All-in-one compact weather sensor: 1 unit
M12 8-pin communication cable: Default length 3-meter hook-up wire with waterproof aviation connector type option
USB Type-C cable: For configuring devices
Pole adapter cross bar: 1 unit

Device’s Operating Mode
The device can be configured via the USB port and monitored using the serial debug tool.

Error Codes
The device provides error codes for Modbus, ASCII, and SDI-12 communication protocols.

Frequently Asked Questions (FAQ)

Q: How do I configure the device using the USB port?
A: To configure the device via the USB port, connect the device using the provided USB Type-C cable to your computer and use the appropriate software for configuration.

7-in-1 Weather Station User Guide（V2）

Product Introduction

RS485 Modbus 7-in-1 Weather Station for temperature, humidity, barometric pressure, light, precipitation (Rain), wind speed and direction. The sensors use ultrasonic to measure wind speed and wind direction, to achieve high- precision data collection, which is easy maintenance. The equipment is designed with industry standards and can work stably in harsh outdoor environments from -40°C to 85°C. The product supports the Modbus-RTU (RS485) and SDI-12 protocols.

Basic parameters

$LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $1$$

Installation

Before the installation, check the packing list and make sure there are no missing parts.

Packing List

·	Parts	Unit
Linovision ONE All-in-one compact weather sensor	1
·	M12 8-pin communication cable (default length 3-meter hook-up wire, and

there is a waterproof aviation connector type to choose when working with Linovision SensorHub datalogger. If the aviation connector is not needed, cut it

off by yourself)

|

1

·| USB Type-C cable, for configuring devices| 1
| Pole adapter cross bar| 1

Installation

Device Interface Introduction $LINOVISION -OT-S300WS7 7-In-1-Weather- Station- $1$$

There are two connectors at the bottom of the device. • USBType- CinterfaceallowsyoutoconnectyourcomputerwithanormalUSBType-Ccabletothe device for configuration. • ThemaindatainterfacecanbeconnectedtotheM128-pincable,supportingmultiplebusprotocols

$LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $2$$

Connect with USB Cable $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $3$$

M12Cable $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $3$$

The device adopts an M12 8-pin connector, the different colored pins provide power and data communication (as shown in the above diagram).
When working with the RS-485, you can connect only 4 wires (not using a heating function), and the rest can be individually wrapped with tape to prevent short circuit $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $4$$ The holes of the cable and the pins of the device connector must be aligned when the cable is plugged in.

$LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $5$$

Plugin the cable and tighten it clockwise
Note: the cable is aimed at with the bottom before inserting it into the bottom. Otherwise,the pins are skewed may cause the communication is abnormal . $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $6$$

When using the device with a heating function, a separate 24V (24V@1A is recommended) power supply is required. Gray wire #5 is connected to the negative of the power supply, and pink wire #6 is connected to the positive pole of the power supply. $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $7$$

Reminding

When the device needs to add power extension cable, if its length is more than 100 meters, it needs to use 24V/2A for power supply (without heating function);
When the heating function is enabled, the power supply of the heating module should be within 3 meters of the SenseCAP ONE. The distance between the power supply of the heating module and the device is not more than 5m. Please use the 3m / 5m conversion cables sold by our company.

Install the device.

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Device’s Operating Mode

After installation, you can power on the device, configure it and collect data from the device. The device has two operating modes, configuration mode, and working mode.

Configuration Mode| With a USB cable, you can check or configure the device’s parameters, such as device name, version number, and communication protocol configuration. Product firmware can be upgraded in this mode.
---|---
Working Mode| Connect the devices and data logger with an M12 data and power cable, and then the data collected by the device will be sent to the host via different communication protocols.

Configure the device via USB port
There is a waterproof round cover at the bottom of the device. Turn it counterclockwise to remove this cover, and you can see a USB Type-C connector and a configuration button.
Connect the device to your computer with a USB Type-C cable. The computer will automatically install the device driver. After the driver is successfully installed, you can see a serial port in the device’s manager. $LINOVISION -OT- S300WS7 7-In-1-Weather-Station- $9$$

If the driver is not installed automatically, click this link to manually download and install the driver. version is CP210x Windows Drivers $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $10$$

There are two methods to configure the device:

SenseCAP ONE Configuration
Tool Serial debug tool

Serial debug tool
The communication settings are as follows:

Select the serial port| You can find port information in your computer’s device manager
---|---
Baud rate| 9600bps, 8 data bits, 1 stop bits, none parity, none flow control.

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In the Serial Debug Assistant, select the corresponding COM port.
Check the “click Enter to start a new line” check box.
Set the baud rate to 9,600.
Send ? in the send area.
If you receive the corresponding 0XA message in the serial receive window, the configuration is successful. If not, please check the COM port and the baud rate.

Please check the detailed ASIIC command in the next chapter.

Communication Protocols

The device supports the following communication protocols:

Modbus-RTU| The Modbus protocol is a common language applied to electronic devices. With this protocol, devices can communicate within their network. It has become a universal industry standard, widely used in data loggers, sensor equipment, and so on. Based on this protocol, devices produced by different vendors can communicate with each other for system integration.

The Modbus protocol is a master-slave protocol. One node is the host, and the other nodes that use the Modbus protocol to join the communication are the slave. Each slave has a unique address.

---|---
ASCII| The ASCII protocol is a query-response or a question-and-answer communication protocol in which a host PC uses ASCII characters to send commands to a device and then receives responses from that device.
SDI-12| Single-bus-based data communication protocol ， is an asynchronous serial

communications protocol for intelligent sensors that monitor environment data.

Modbus-RTU Protocol
To start Modbus-RTU communication, the M12 data cable of the device needs to be connected to the RS-485 port of one Data Logger, which powers up the device at a voltage of 12V-24V. The following image is a diagram of the wiring: $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $12$$

Protocol communication parameters

Data	One start bit, 8 Data bits, None parity, one Stop bits.
Format	9600bps (default), which can be modified by configuration.

Baud Rate

Default Device Address (Decimal)

| | S1000| 43(CO2 series)|
S800| 46
S700| 20
S500| 10
S200| 44

Modbus-RTUProtocolMessageFormat

Sensor data is stored in the Input Register and is read-only
The device address and the communication baud rate of RS-485 are stored in the Holding Register and can be modified.
Each register is 16bits and takes up 2 bytes.

Read the message from the input register.

The message format from by the host

Slave address| Function code| Register address| Number of registers| CRC check
1 byte| 1 byte| 2 bytes (big-endian).| 2 Byte (big-endian).| 2 bytes
AA| 0x04| RRRR| NNNN| CCCC
Address 0-247| 0x04| big endian| big endian| little endian
The message response from the slave

Slave address| Function code| Number of registers| First Register data| Second register data| …| CRC check
1 byte| 1 byte| 1 byte| 2 bytes| 2 bytes| …| 2 bytes
AA| 0x04| MM| VV0| VV1| …| CCCC
---|---|---|---|---|---|---
Address 0-247| 0x04| big endian| big endian| big endian| …| little-endian

Read and write the holding register.

The message format from by the host

The message response from the slave

The message response from the slave

Slave address| Function code| Number of

registers

| First Register data| Second register

data

| …| CRC check
1 byte| 1 byte| 1 byte| 2 bytes| 2 bytes| …| 2 bytes
AA| 0x03/0x06| MM| VV0| VV1| …| CCCC
Address 0-247| 0x03/0x06| big endian| big endian| big endian| …| little-endian

Register Address Definition

Register

type

|

Address

|

Name

|

values range

| Number of

registers

| Register

status

|

Note

---|---|---|---|---|---|---
| 0x0000| Air temperature| -40000~85000| 2| R|

big-endian

Data format int32

Divide the data value by 1000 to get the true measurements

| 0x0002| Air humidity| 0~100000| 2| R
|

0x0004

| barometric

pressure

|

30000000~125000000

|

2

|

R

| 0x0006| Light intensity| 0~188000000| 2| R
|

0x0008

| Minimum wind

direction

|

0~360000

|

2

|

R

| | Maximum wind| | |
| 0x000A| direction| 0~360000| 2| R
| | Average wind| | |
| 0x000C| direction| 0~360000| 2| R
Input| | | | |
| Minimum wind| | |
register| 0x000E| speed| 0~60000| 2| R
| | Maximum wind| | |
| 0x0010| speed| 0~60000| 2| R
|

0x0012

| Average wind speed|

0~60000

|

2

|

R

|

0x0014

| Accumulated

rainfall

|

0~80000000

|

2

|

R

|

0x0016

| Accumulated

rainfall duration

|

0~2000000000

|

2

|

R

| 0x0018| Rain intensity| 0-200000| 2| R
| 0x001A| Maximum rainfall| 0-60000| 2| R
| | intensity| | | |
---|---|---|---|---|---|---

0x001C

| Heating

Temperature

|

-40000~85000

|

2

|

R

0x001E

|

The dumping of state

| 0 or 1000((The dumping of state is 1000,the

vertical of state is 0)

|

2

|

R

0x0030| PM2.5| 0~1000000| 2| R
0x0032| PM10| 0~1000000| 2| R
0x0040| CO2| 0-10000| 2| R
| 0x0048| Noise intensity| 35000~100000| 2| R
|

0x1000

|

Device address

| |

1

|

R/W

| The default address is 1

Can be set to 1 – 247

| | | | | | The default is 96, which means
| | | | | 9600.
| | | | | It can be set to:
| | | | | 12=1200
| | | | | 24=2400
| 0x1001| Baud rate| 1| R/W| 48=4800
| | | | | 96=9600
| | | | | 192=19200
| | | | | 384=38400
Holding| | | | | 576=57600
register| | | | | 1152=115200
| 0x2000| Set the| | 1| R/W| Write 1 to set accumulated
| | accumulated| | | rainfall to 0. Read back 1 to
| | rainfall to 0| | | confirm that the setting is
| | | | | finished. Read back 0 indicates
| | | | | that the setting failed
| 0x2001| Set the accumulated rainfall| |

1

|

R/W

| Write 1 to set accumulated

rainfall duration to 0. Read back

Modbus-RTURead

Here is an example of the Modbus Poll tool
(download from https://www.modbustools.com/download.html).)

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Configuration connection parameters: Baud rate 9600bps, 8 Data bits, None Parity, 1 Stop bits. $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $14$$

Read the air temperature register 0x0000 to 0x0001, click Setup, and select Read/Write Definition $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $15$$

Set the default slave ID(2-in-1 is 44,5-in-1 is 10 quantity (2-in-1 is 12，5-in-1 is 6，7-in-1 is 28);
$LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $16$$

Now the computer reads the sensor data every 1 second, and the measurement (line 0 and line 1) is shown in below picture, after dividing the measurement by 1000, it is the true temperature value, 28300/1000 = 28.3 °C $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $17$$

On the right, you can check the raw sent and received data packages. When the temperature is positive:

Host sends 01 04 00 00 00 02 71 CB
Slave responses 01 04 04 00 00 6E 8C D6 41
Return temperature data 0x00006E8C (Hex), converted to decimal = 28300, get the corresponding air temperature by dividing through 1000, air temperature = 28300/1000 = 28.3 °C

When the temperature is negative:
The temperature needs to be obtained through a complement calculation.

Host sends 01 04 00 00 00 02 71 CB
Slave responses 01 04 04 FF FF FC 18 D6 41
Returned temperature data FFFFFC18H (Hex complement).
The original code is – (FF FF FC 18-1 = FF FF FC 17) = 80 00 03 E8(Hex) = -1000 (Decimal).
Then the temperature measurement is -1000/1000 = -1°

S500 decode

Read register 0x0000-0x0005. Send command: 0A 04 00 00 00 06 173 (Check code) ; Return: 26 04 40 00 00 70 80 (Temperature) 00 00 95 10 (Humidity) 06 07 94 40 (Air pressure) (Check code) ; Read register 0x0008-0x0013. Send commond: 0A 04 00 08 00 0C (Check code) ; Return: 0A 04 0C 00 00 00 00 (Min wind direction) 00 03 6E 84 (Max wind direction) 00 03 C8 CO (Avg wind direction) 00 00 00 00 (Min wind speed) 00 00 04 BC (Max wind speed) 00 00 02 10 (Avg wind speed) BC 78 (Check code) 39.09 S700 decode: Read register 0x0000-0x001F and 0x0030-0x0033.| Send command: 14 04 00 00 00 20 F3 06 Return: 14 04 40 00 00 70 80 (Temperature) 00 00 95 10 (Humidity) 06 07 94 40 (Air pressure) 00 00 00 00 (Light) 00 00 00 00 (Min wind direction) 00 00 00 00 (Max wind direction) 00 00 00 00 (Avg wind direction) 00 00 00 00 (Min wind speed) 00 00 00 00 (Max wind speed) 00 00 00 00 Avg wind speed) 00 00 00 00 (Accumulated rainfall) 00 00 00 00 (Accumulated rainfall duration 00 00 00) 00 (Rain intensity) 00 00 00 00 (Maximum rainfall intensity) 00 00 6A 7C (Heating Temperature 00 00 00 00 (The dumping of state) 99 09 (Check of S1000 decode: Read register 0x0000-0x001F and 0x0030-0x0033. Send command: 2B 04 00 00 00 20 F6 18 Return: 2B 04 40 00 00 70 80 (Temperature) 00 00 95 10(Humidity) 06 07 94 40(Air pressure) 00 00 00 00(Light) 00 00 00 00(Min wind direction) 00 00 00 00(Max wind direction) 00 00 00 00(Avg wind direction) 00 00 00 00 (Min wind speed) 00 00 00 00(Max wind speed) 00 00 00 00(Avg wind speed) 00 00 00 00(Accumulated rainfall) 00 00 00 00(Accumulated rainfall duration) 00 00 00 00(Rain intensity) 00 00 00 00(Maximum rainfall intensity)00 00 6A 7C(Heating Temperature) 00 00 00 00(The dumping of state) 99 09(Check code) PM2.5, PM10 and CO2 need to be read separately: Send command: 2B 04 00 30 00 04 F6 0C Return: 2B 04 08 00 00 90 88(PM2.5) 00 00 A4 10(PM10) 13 FA(Check code) Read register 0x0040-0x0041. Send command:2B 04 00 40 00 02 77 D5 Return: 2B 04 04 00 0C EC 98 (CO2) FD 2F (Check code) ;

ASCII Protocol
Command definition

A	Device address, 0 by default
XA	Starter, fixed value
;	The separator used to distinguish multiple commands
…	A command, represented by different strings
?	A query term used to query values
=	Assignment, which is used to set the value
v	The argument, the specific value of the parameter is set
m	Sensor measurement
&	Sensor measurements combine character for getting or setting multiple

measurement parameters

| Response terminator

Terms Explanation

Command| Represented by different strings, such as BD for Baud rate and CP for communication protocol
---|---
Data List| A Data List contains multiple sensor measurement types, represented by an abbreviation of G0.

For example, G0 contains several test types: AT;AH;AP;LX;DN;DM;DA;SN;SM;SA;RA;RD;RI;RP;HT;TILT

QueryCommandFormat

Commands come in two formats:

A command without = refers to the basic query method.
$LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $4$$ Example: ? indicates query the device’s address
A command with = refers to a query with an argument
$LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $5$$ Example: 0XA;BD=? indicates query the device’s baud rate

SettingCommandFormat

Set a specified parameter, such as setting a baud rate. $LINOVISION -OT- S300WS7 7-In-1-Weather-Station- $6$$

Example: 0XA;BD=96 indicates query the device’s baud rate

Command-List
Device info queries and related commands settings

Query Device address	?

Query

for 57600; and 1152 for 115200.

For example, the return value 0XA;BD=96 represents the successful setting of a Baud rate of 9,600

Response 0XA;CP=3 means that the data communication protocol of device 0 is Modbus-RTU protocol based on the RS-485 bus

Setting| Send| 0XA; CP=[cp]
Response| 0XA; CP=[cp]
Description| Set the communication protocol of device 0 to [cp], if [cp] is 6, the communication protocol is set to ASCII

text protocol based on the RS-485 bus

RS-485 address| MBAD

Query

| Send| 0XA; MBAD=?
---|---|---
Response| 0XA; MBAD=1
Description| The RS-485 address of device 0 is 1 (decimal)

Setting

Query

| Send| 0XA; MBBD=?
Response| 0XA; MBBD=96
Description| The RS-485 communication baud rate for device 0 is 9,600

Setting

| Send| 0XA; MBBD=[bd]
Response| 0XA; MBBD=[bd]
Description| Return device 0’s RS-485 communication baud rate is [bd]: it can be 96 for 9600, 192 for 19200, 384 for 38400, 576 for 57600, and 1152 for 115200.

For example, the return value is 0XA;MBBD=96 represents the successful setting of the baud rate of

9,600

Setting

| Send| 0XA;CC=Y
---|---|---
Response| 0XA;CC=Y
Description| Enable Electronic Compass
Send| 0XA;CC=N
Response| 0XA;CC=N
Description| Disable Electronic Compass
Send| 0XA;CC=C
Response| 0XA;CC=C

Description

| Enable Geomagnetic compensation，it will start the 30s compensation process, during this time, the

device should be placed horizontally, and rotate evenly along the Z-axis for 1-2 rounds.

N: Disable tile detection function

Setting| Send| 0XA;TD=Y
Response| 0XA;TD=Y

Description

| Set to enable tilt detection function：TILT=0 means the device is placed vertically, TILT=1 means the

device is placed not placed upright.

N: disable heating function

Setting| Send| 0XA;HC=Y
Response| 0XA;HC=Y
Description| Turn on the heating function of the device;

When the air temperature is between [5℃ and -25℃], the device begins to heat, and the temperature of the heating plate is the highest, up to 40℃

When the air temperature is higher than 5 ° C, the device stops to heat;

(Note: If the temperature is lower than -25 ° C ,the heating module cannot raise the temperature of the device above 0 ° C, it may freeze, which will affect the detection of

wind speed and direction)

Send| 0XA;HC=N
Response| 0XA;HC=N
Description| Set to enable heating function.

Command to read sensor data.
For quick reading of all measurements, G0 is the command.

Read all measurements	G0
Query	Send
Response

0XA;AT=23.6;AH=56.4;AP=100819.1;LX=93.0;DN=0.0;DM=0.0;DA=0.0;SN=0.0;SM=0.0;SA=0.0;RA=1.

4 ;RD=60.0;RI=0.0;RP=0.0;HT=-38.4;TILT=0.0

---|---|---
Description| Returns the value of all measurement parameters
|

Response

| 0XA;AT=23.6;AH=56.4;AP=100819.1;LX=93.0;DN=0.0;DM=0.0;DA=0.0;SN=0.0;SM=0.0;SA=0.0;RA=1.

4 ;RD=60.0;RI=0.0;RP=0.0;HT=-38.4;TILT=0.0

---|---|---
Description| Returns the value of all measurement parameters
Group

Name

| Measurement| Name| Unit
---|---|---|---

G0

Modify the Properties of Measurement Parameters
Properties represent some characteristics of the measured data, such as the unit of output temperature and the interval between data updates.

Temperature and Humidity

Data Update Interval

|

IB

---|---
Query| Send| 0XA;IB=?
Response| 0XA;IB=1
Description| The default data updates every 1 second
Setting| Send| 0XA;IB=2
Response| 0XA;IB=2
Description| Set the data update interval to 2 seconds, you can choose a value between 1 to 3600 seconds.
Air Temperature Unit| UT
Query| Send| 0XA; UT=?
Return| 0XA; UT=C
Description| The temperature unit is Celsius
Set up| Send| 0XA; UT=F
Response| 0XA; UT=F
Description| Set the air temperature unit to Fahrenheit.

C=°C, F=°F

Barometric Pressure Unit| UP

Query

| Send| 0XA; UP=?
---|---|---
Response| 0XA; UP=P
Description| The unit is Pa.

Set up

| Send| 0XA; UP=H
Response| 0XA; UP=H

Description

| Set the unit to hPa.

P = Pa, H = hPa, B = bar, M = mmHg, I=inHg

Wind Speed & Direction

Data Update Interval

|

IW

Query

| Send| 0XA; IW=?
Response| 0XA; IW=1
Description| The default data updates every 1 second.

Set up

| Send| 0XA; IW=2
Response| 0XA; IW=2
Description| Set the data update interval to 2 seconds, you can choose a value between 1 to 3600 seconds.
Wind speed & direction

average time window

|

AW

Query

| Send| 0XA; AW=?
Response| 0XA; AW=5

Description

| The default average update interval for wind speed & direction data is 5 seconds.

The device collects wind speed & direction in 5s intervals and then averages the value.

Setting

Query

| Send| 0XA; US=?
Response| 0XA; US=M
Description| The default wind speed unit is m/s

Setting

| Send| 0XA; US=K
Response| 0XA; US=K

Description

| Set unit to km/h

M = m/s, K = km/h, S = mph, N = knots

The wind direction

offset correction value

|

DO

Query

Description

| Set the wind direction offset to +10°, if the current wind direction is 280°, the corrected wind direction is 290 degrees.

The wind correction range is -180° to 180°

Rainfall Data Update Interval| IR

Query

| Send| 0XA;IR=?
---|---|---
Response| 0XA;IR=10
Description| The default rain data update interval is 10 seconds.

Setting

| Send| 0XA;IR=60
Response| 0XA;IR=60

Description

| Set the data update interval to 60seconds.

The interval range is 10 to 3600 seconds.

Rainfall Unit| UR

Query

| Send| 0XA; UR=?
Response| 0XA; UR=M
Description| The default rainfall unit is mm

Setting

| Send| 0XA; UR=I
Response| 0XA; UR=I

Description

| Set the units of rainfall to

inches M = mm, I = inch.

Rainfall Counter Reset Mode| CR

Query

| Send| 0XA; CR=?
Response| 0XA; CR=M
Description| Rain counter reset mode is by manual M

Setting

| Send| 0XA; CR=L
Response| 0XA; CR=L

Description

| Set the counter reset mode to overflow reset, and you can select the modes as:

M: Manual reset, reset immediately after sending the reset command (the reset command is available under all three communication protocols, as detailed in the different protocol sections).

A: Post-read reset (accumulated rainfall and accumulated rainfall time are performed separately after reading reset)

L: Overflow reset

Accumulated rainfall

overflow value

|

AL

Query

| Send| 0XA; AL=?
Response| 0XA; AL=80000

Description

| The default accumulated rainfall overflow value is 80000, which is measured in the current rainfall unit.

This overflow value takes effect only if the CR rainfall counter reset mode is set to L overflow reset.

Setting

| Send| 0XA; AL=1000
Response| 0XA; AL=1000

Description

| When the rainfall is set to 1000 (current unit), the accumulated rainfall will be reset to 0.

The overflow value range is 10-80000 (current unit).

Accumulated rainfall

duration overflow value

|

DL

Query

| Send| 0XA; DL=?
Response| 0XA; DL=2000000

Description

| The default rainfall duration overflow value is 2,000,000, the unit is second.

This overflow value will only take effect when the CR rainfall counter reset mode is L overflow reset.

Setting

| Send| 0XA; DL=3600
---|---|---
Response| 0XA; DL=3600

Description

| Set the rainfall duration overflow value to 3600

seconds. It ranges between 100 – 2000000 seconds.

Clear the accumulated rainfall| CRA

Setting

| Send| 0XA; CRA=1
Response| 0XA; CRA=1
Description| Clear the accumulated rainfall.
Clear accumulated

rainfall Duration

Interpretation

|

Accumulate d rainfal

| Once the device is powered ,the accumulated value will be calculated and saved. When the accumulated value reaches 80,000 mm, it will be automatically cleared and enter the recalculation stage (it will still be

saved after power off).

Accumulated rainfall duration

| Once the device is powered ,the accumulated value will be calculated and saved. When the accumulated value reaches 2000000s, it will be automatically cleared and enter the recalculation stage (it will still be

saved after power off).

Rainfall intensity

(hourly rainfall)

| The accumulated rainfall in the past hour, during which the accumulated value is updated every 10s until

the accumulated time reaches 1 hour

Maximum

rainfall intensity

| Maximum rainfall per minute in the past hour *60 minutes

SDI-12
SDI-12 communication adopts three wires, two of which are sensor power supply wires and the other is SDI-12 signal wire.
Each sensor on the SDI-12 bus has a unique address, which can be set to ‘0’, ‘1’ ~ ‘9’, ‘A’ ~ ‘Z’, ‘A’ ~ ‘Z’. The SDI-12 address of the SenseCAP ONE defaults to ‘0’. The instructions supported by this sensor are shown in the next chapter, where each instruction conforms to the SDI-12 v1.4.
The sensor is powered by a DC power supply of 3.6~16V. After the sensor is powered on, it will go into sleep mode immediately and wait for the data acquisition equipment to give instructions. SDI-12 uses baud rate 9600bps, 1 start bit (high level), 7 data bits (high 0 and low 1, anti-logic), 1 even parity bit, and 1 stop bit.

The sequence of each byte sent is shown in the following figure

SDI-12 command and response

$LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $18$$ SDI-12 command and response

Command format

Start with device address ‘a’, it is ‘0’in the following
sample. End with ‘!’as a terminator
The response command end with the

Query the device address|

?!

---|---
Send| ?!
Response| 0
Description| The sensor at address ‘0’ responded to the query
Query the device status| 0!
Send| 0!
Response| 0
Description| Address ‘0’ of device online
Query the device information| 0I!
Send| 0I!
Response| 014SenseCAPONE3.01019906922104001
Description| Response the device information
| accccccccmmmvvvxxxxxxxxxxxxxxxx
---|---
| a| Device address:0|
14| SDI-12 protocol version: v1.4
cccccccc| Product：SenseCAP
mmm| Device series：ONE
vvv| Software version：3.
xxxxxxxxxxxxxxxx| Device serial number：1019906922104001
Modify device

address

After 2s, the response device’s address, means finishing the measurement.：0

Description

| This command is to start THPL measurement, in order: air temperature, air humidity, atmospheric pressure, illuminance, but the sensor will not reply to the measurement data immediately after receiving this command, but the time required to reply the measurement data and the number of measurements. To obtain measurement data, you must wait until the measurement is completed, and then use the send data command “0D0!” to obtain it.

After using this command, the sensor will enter a sleep mode after the measurement to save power

consumption. After using “continuous measurement command 0R0!…0R9!”, it will exit the low power consumption state.

The response format is defined as follows:

atttn

| a| Device address:0|
ttt| The time expense to measure data, the unit is

seconds.

n| The number of measurements
Extended

Measurement

| 0M1!…0M9!
Send| 0Mn!（n ranges 0~9）
Response| Immediately response：00024

After 2s, the response device’s address, means finishing the measurement.：0

Description| 0M1!: Start Wind measurement: minimum wind direction, maximum wind direction, average wind direction, minimum wind speed, maximum wind speed, average wind speed.

0M2!: Start Rain measurement: accumulated rainfall, accumulated rainfall time, rainfall intensity, maximum rainfall intensity.

0M3!: Start Dust measurement: PM2.5, PM10.

| 0M9!: Start other measurements: heating temperature, tilt status.

0M4!…0M8!: reserved.

After using this command, the sensor will enter a sleep mode after the measurement to save power consumption. After using “continuous measurement command 0R0!…0R9!”, it will exit the low power consumption state.

For the definition of reply, please refer to “Start measurement command 0M!”

---|---
Read measurement value| 0D0!…0D9!
Send| 0D0!
Response| 0+27.65+65.81+100000+5000

Description

| This command is used to obtain a set of measurement data in the sensor. The sensor responds with the measurement data. If all the desired measurement data is not returned in 0D0!, you can continue to send 0D1!, 0D2!, etc., until all the measurement data is received.

The response format is defined as follows:

a

| a| Device address:0|

| This the real measurement value.

pd.d

p is the polarity symbol.

the first d is the number before the decimal point. the second d is the data after the decimal point. Note that the decimal point is not necessary.

In this example, “+27.65” is the first measurement data, “+65.81” is the second measurement data, “+100000” is the third measurement data, and

“+5000” is the fourth measurement data.

Continuous measuremen

t command

|

0R0!..0R9!

Send| 0R0!
Response| 0+27.65+65.81+100000+5000
Description| This is different from “start measurement command 0M!”, the measurement value can be returned directly. Each “continuous measurement command” is an independent measurement process, for example, 0R0! and 0R1! are not required before 0R2!.

0R0!: Start continuous THPL measurement: air temperature, air humidity, atmospheric pressure, light intensity.
0R1!: Start Wind continuous measurement: minimum wind direction, maximum wind direction, average wind direction, minimum wind speed, maximum wind speed, average wind speed.
0R2!: Start Rain measurement: accumulated rainfall, accumulated rainfall time, rainfall intensity,

| maximum rainfall intensity.

0R3!: Start Dust continuous measurement: PM2.5, PM10.
0R9!: Start another Continuous measurement: heating temperature, dumping status. 0R4!…0R8!: reserved.

If the sensor was in a low-power working state before, after using this command, the sensor will exit the low-power working state.

---|---
Start Measurement

with CRC

| aMC!,aMC1!…aMC9!,aRC0!…aRC9!
Send| 0RC0!
Response| 0+26.52+67.73+100280+35JKy
Description| To enhance the error detection capability of the SDI-12 protocol, “start measurement command 0M!”, “extended measurement command 0M1!..0M9!” and “continuous measurement command 0R0!…0R9!” can add 16-bit cyclic redundancy check. Add the character C after the command character M or R of these commands to form a new command: aMC!,aMC1!…aMC9!,aRC0!…aRC9!.

For the calculation of CRC-16, please refer to the SDI-12 protocol v1.4 document.

Clear accumulated

rainfall duration

Clear failed: 0

Clear accumulated

rainfall duration

Clear failed: 0

SDI-12Read

Wiring the SDI-12

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Use USB to SDI-12 debugger to communicate with the device $LINOVISION -OT- S300WS7 7-In-1-Weather-Station- $20$$

The communication settings

Format	1 start bits, 7 data bits, Even parity, 1 stop
Baud rate	bits 1200bps
Device address	0x00

Connect the green wire (GND Data) and yellow wire (SDI-12 Data) to the USB to SDI-12 debugger.
And connect the red wire (Vin+ power positive) and brown wire (Vin- power ground) to the 12V power supply.
Download the serial port debugging assistant: https://github.com/Neutree/COMTool and then open the serial port debugging tool.

Choose the correct port number Set the baud rate to the baud rate of the USB to SDI-12 debugger (note that it is not the baud rate of the SDI-12 protocol)
Check the “CRLF”
Click to open the serial port.
Send the query device address command “?!”, if you can see the response “0”, it means the connection is OK.

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Start Measurement
Read air temperature, air humidity, barometric pressure, light intensity Send the “start measurement command 0M!”, the sensor first responds with “00024”, which means that the “0M!” command takes 2 seconds to measure and returns 4 measured values. After 2 seconds, the sensor responds with its own address “0”, indicating that the measurement has been completed. $LINOVISION -OT- S300WS7 7-In-1-Weather-Station- $22$$

Then send ” Read measurement value command 0D0!” to get the 4 measured values of this
measurement, which are air temperature +27.01 ℃ , air humidity 64.74%, barometric pressure 100720Pa, and light intensity 10Lux. $LINOVISION -OT- S300WS7 7-In-1-Weather-Station- $23$$

Use extended measurement command 0M1! to read minimum wind direction, maximum wind direction, average wind direction, minimum wind speed, maximum wind speed, average wind speed. The device responds with “00056”, which means that the “0M1!” command takes 5 seconds to measure and returns 6 measured values. After 5 seconds, the device responds with its own address “0”, indicating that the measurement has been completed.

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Then send ” Read measurement value command 0D0!” to get the 6 measured values of this measurement, which are minimum wind direction 345.9 degrees, maximum wind direction 347.5 degrees, average wind direction 346.3 degrees, minimum wind speed 2.8m/s, and maximum wind speed 2.8m. /s, average wind speed 2.8m/s. $LINOVISION -OT-S300WS7 7-In-1-Weather-Station- $25$$

Then send “continuous measurement command 0R2!, the device returns 4 measured values: cumulative rainfall 1.2mm, cumulative rainfall duration 20 seconds, rainfall intensity 1.2mm/h, maximum rainfall intensity 72.0mm/h.

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