Feature:

1. Wind Direction Sensor: The all round 360 degree wind direction sensor comes with excellent linearity, high accuracy, no dead points, strong resistance, easy observation, and reliable stability.
2. Wind Direction Indicator Shell: Small rotational resistance, accurate measurement, small size, light weight, easy to carry and assemble. It has a simple design, but very practical in use, giving you a good using experience.
3. ABS Material: Made with a low inertia ABS wind vane, the sensor exhibits good dynamic characteristics and responds well to wind direction changes. Safe to use. Boasting wonderful performance and strong stability.
4. Working Principle: The wind direction sensor operates primarily by rotation. This working principle enables accurate measurements of the wind's direction. It can be used outdoors for a long time.
5. Wide Application: Ideal for meteorology, environmental monitoring, aviation, and aerospace. It aids in understanding wind conditions and implementing corresponding measures.

Specification:

Item Type: Wind Direction Sensor
Material: ABS
Product Size: Approx. 223x190x70mm/8.78x7.48x2.76in
Gross Weight: Approx. 385.00g/13.6oz
Power Supply Voltage: DC 5V
Output: RS485 for Modbus
Extension Cable Length: 0.8m/2.6ft
Accuracy: Omni directional: ±3°
Resolution: Omni directional: 1°
Startup Wind Speed: ≤0.8m/s
Maximum Power Consumption: 0.48W
Load Capacity: DC 12V power supply, current output impedance ≤350Ω
DC24V power supply, current output impedance ≤900Ω
Voltage output impedance ≥1KΩ
Operating Environment: Temperature -35℃ to 60℃
Humidity ≤100%RH non condensing
Protecting Level: IP64
Cable Level: Rated voltage: 300V 80℃
Application: for garden, greenhouse, environmental protecting, meteorological station, ship, dock, aquaculture, advertising barrier, weather, marine, environment, airport, port, laboratory, agriculture and traffic environment wind direction measurement
Installation Aperture: 3.2mm/0.13in
Mating Plug Diameter: 15mm/0.59in (recommend reserving 25mm/0.98in for wiring, wire up first, then install and fix the sensor)
Wiring Method:
Red wire: power positive(voltage, current, pulse), power positive(RS485)
Black wire: power negative(voltage, current, pulse), A+ (RS485)
Yellow wire: signal (voltage, current, pulse), B- (RS485)
Green wire: power negative(RS485)
Standard for ModBus RTU communicating protocol :
First, the serial port format: data bits 8 bits, stop bit 1 bit, parity bit none, default baud rate 9600bps, serial port software set to hex send and receive, two communicating intervals of at least 500ms or more, CRC in the manual for the parity bit, 2 bytes. Device address default address 2.
Second, the communicating format
1. Write the device address (for example, write address 02)

Send	00	06	00	20	00	02	08	10
Instruction	Address	Write	Starting address		New address		CRC check
Return	00	06	00	20	00	02	08	10
Instruction	Address	Write	Starting address		New address		CRC check

Return 01 86 ** ** then the configuration is not successful.
2. Read device address (e.g. read address 2)

Send	00	03	00	20	00	01	84	11
Instruction	Address	Read	Starting address		Read Points		CRC check
Return	00	03	02		00	02	04	45
Instruction	Address	Read	Data length		Device data		CRC check

3. Read register data (eg: read address 2 data)

Send	02	03	00	00	00	01	84	39
Instruction	Address	Read	Starting address		Read Points		CRC check
Return	02	03	02		00	26	7D	9E
Instruction	Address	Read	Data length		Device data		CRC check

Omnidirectional wind sensor returns data as 0x0026 converted to decimal as 38 , the wind direction value is 38 degrees, no decimal places. If it is an eight direction wind direction sensor, the return data refers to the table of eight direction calculation formula on page 1.
4. Read device communicating baud rate (for example: read address 2 of the device baud rate = 9600)

Send	02	03	00	10	00	01	85	FC
Instruction	Address	Read	Starting address		Read Points		CRC check
Return	02	03	02		00	02	7D	85
Instruction	Address	Read	Data length		Device data		CRC check

Baud rate = data x 4800. return data 0x0002, then baud rate = 4800x2 = 9600.
5. Write device communicating baud rate (for example, write baud rate 9600)

Send	02	06	00	10	00	02	09	FD
Instruction	Address	Read	Starting address		New baud rate		CRC check
Return	02	06	00	10	00	02	09	FD
Instruction	Address	Read	Starting address		New baud rate		CRC check

Baud rate = data x 4800. write data 0x0002, then baud rate = 4800x2 = 9600. supported baud rates are 4800, 9600, 14400, 19200, 38400, 57600, 115200. if write other unsupported baud rate, it will be automatically restored to 9600 after reboot.
Returning 01 86 **** means the configuration is not successful.
6. Switch the communicating protocol (e.g. switch to for ASCII private protocol).

Send	02	06	00	14	00	03	89	FC
Instruction	Address	Write	Starting address		01 for MODBUS 03 for ASCII		CRC check
Return	02	06	00	14	00	03	89	FC
Instruction	Address	Write	Starting address		Data		CRC check

If 01 86 **** is returned, the configuration was unsuccessful.
Change the protocol from 01-for MODBUS to 03-for ASCII private protocol.
For Modbus CRC checking steps :
1. Preset the 16 bit register as hexadecimal FFFF, call this register as CRC register;
2. Isolate the first 8 bit data with the lower bit of the CRC register and put the result in the CRC register;
3.Check the lowest bit by shifting the contents of the register one bit to the right (towards the lower bit) and filling the highest bit with a 0;
4. If the lowest bit is 0: repeat step 3 (shift again) if the lowest bit is 1: the CRC register is iso orthogonal to the polynomial A001 (1010 0000 0000 0001);
5. Repeat steps 3 and 4 until it is shifted right 8 times so that the entire 8 bit data is all processed;
6. Repeating steps 2 through 5 for the next 8 bit data;
7. The final CRC register obtained is the CRC code (the CRC code obtained is low before high).
Troubleshooting :
1. The wind blades do not rotate properly, and the hysteresis is big. There are foreign objects or jammed in the bearing due to long term use. Please send the sensor back to the company for processing.
2. Analog signal meter display value is not correct. Possible wiring problems or communicating serial port failure caused by the inability to obtain the correct data. Please check whether the wiring is correct and firm, whether the serial port is occupied, and whether the serial port setting is correct.

Package List:

1 x Wind Direction Sensor

Note:

1. Please check the packaging for completeness and verify that the product model matches the selection;
2. Do not connect the wires when the power is on. Only power on after checking the connections;
3. The length of the sensor wire will affect the product output signal. Do not modify the product arbitrarily during use;
4. The sensor is a precise device. Users should not disassemble it themselves, use cutting objects, or corrosivity liquids to contact the sensor surface during use to avoid damaging the product;
5. Do not plug or unplug with power on;
6. Install facing the south direction.