ATO FST200-204 (01) PDF MANUAL

ATO FST200-204 (01) PDF SUMMARY:

What is the installation method for the ultrasonic wind speed and direction sensor?

The sensor bracket is designed to be mounted on the mast. The following tools are required for installation:

• Open-end wrench or ring wrench.
• Compass, used to adjust the wind measurement to point to the north (or manual observation positioning).

Note: The two installation methods need to be specified at the time of purchase.

1. Loosen the nut.
2. Arrange the sensors in the direction facing north.
3. Push the sensor into the upper end of the mast from top to bottom.
4. Use even force and tighten the nut, at this time the sensor can be slightly adjusted to keep it level.
5. Turn the two nuts 3 turns and fix.

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How do I perform wind direction positioning?

In order to correctly display the wind direction, the sensor must be aligned to face north, the ‘N’ arrow indicates the north direction.

Note: The magnetic north pole indicated by the compass does not exactly coincide with the geographic north pole, so the deviation (error) of the location must be considered when arranging the sensors.

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What should be considered when selecting the installation location?

In order to prolong the service life of the equipment and ensure the normal operation of the equipment, please pay attention to the following items when choosing the installation location of the equipment:

• The ground where the mast is installed should be solid and stable.
• The installation location of the equipment should be convenient for maintenance.
• The installation height is at least 5 meters above the ground.
• The area around the sensor should be open.

Note: Buildings, bridges, dikes, and trees can affect wind measurements. Likewise, wind gusts from passing vehicles can affect wind measurements.

• The power supply should be stable and reliable to meet the requirements of long-term operation.
• When transmitting data through the wireless communication network, ensure that the network coverage is good.

Note: The calculation results of the measured values are only applicable to the installation place of the equipment, and cannot be extended to other areas or the entire road accordingly.

• Installing the equipment to the mast, only approved and tested devices are allowed (wires and risers, etc.).
• It is necessary to abide by the various specifications related to the operation at this height.
• Reasonably choose the size of the mast and fix it correctly.
• The mast must be grounded in accordance with regulations.
• When working on the side of the road or near the road, you must abide by the relevant safety regulations.

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What happens if the device is installed incorrectly?

• Device may not work.
• Equipment may be permanently damaged.
• If the device falls, it may cause danger or injury.

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What is the signal outgoing line and line color definition?

Pin assignment:

1. Red: Positive supply voltage (+24V)
2. Green: RS485_A (485 output mode) or wind speed 0~5V (voltage output) or wind speed 4~20mA (current output)
3. Black: Negative supply voltage
4. White: RS485_B (485 output mode) or wind direction 0~5V (voltage output) or wind direction 4~20mA (current output)

Note: The line color definition is for reference only. Before use, please request the latest user manual or contact customer service to confirm the line color definition.

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What are the power supply characteristics?

• Under 24VDC standard conditions, the current is less than 30mA (without heating).
• Under 24VDC standard conditions, the current is less than 2A (during heating).
• The power supply unit used must be certified to comply with Class III Equipment Protection Standard (SELV).

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What is the communication interface for the ultrasonic wind speed and direction sensor?

There is an industry standard half-duplex two-wire RS485 interface in the device.

• Baud rate: 9600
• Data bits: 8
• stop bits: 1
• Parity: none
• Adjustable baud rate: 2400~115200

Note: 2400, 4800, 9600 baud rates are recommended.

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How should I maintain the ultrasonic wind speed and direction sensor?

In general, the equipment requires no maintenance. However, an annual functional test is recommended. When performing functional tests, please note the following:

• Visual inspection of equipment for sludge.
• Send a measurement request signal to check the sensor.

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What are the wind speed parameters?

• Measuring range: 0~60m/s, 0~70m/s
• Starting wind speed: 0.1m/s
• Response time: 1s
• Resolution: 0.1m/s
• Accuracy: ±0.3m/s or ±3% (0~30m/s) or ±5% (30~70m/s), whichever is greater

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What are the wind direction parameters?

• Measuring range: 0~360°
• Starting wind speed: 0.1m/s
• Accuracy: ±2°
• Resolution: 0.1°

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What are the basic parameters?

• Digital signal: RS485
• Analog signal: 0~5V or 4~20mA
• Baud rate: 2400~115200
• Power supply voltage: 9V~24V DC
• Working current: common type: <35mA (12VDC), heating type: 0.6~1A
• Working temperature: -20°C ~ 60℃
• Working humidity: 0% ~ 95% RH

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What are the suggested bottom bracket dimensions?

Suggestions for making the bottom bracket are as follows:

• Φ6 through * 2" is the drainage port, which cannot be blocked to avoid internal water storage;
• M6*4" is the screw hole, it is recommended to open the hole Φ7mm;
• The middle hole is a Φ18.5 aviation plug, and the recommended opening diameter is not less than 25mm.

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What is the data transmission method for the communication protocol?

The communication method is RS485 serial communication, and the default configuration is 8 data bits, 1 stop bit, and no parity bit.

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What is the data transfer rate for the communication protocol?

The default baud rate is 9600bps, and the supported baud rate is 2400~115200.

Note: The baud rate range will affect the communication effect. 9600, 4800, 2400 baud rates are recommended. If the baud rate is too high and the data line is too long, it will cause communication failure.

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What is the Datagram format for the communication protocol?

(1) Function code 0x03–query the content of slave device register

Master message	Correct message from the device
Slave device address (0x01-0x7F 1 byte)	Slave device address (0x01-0x7F 1 byte)
Function code (0x03 1 byte)	Function code (0x03 1 byte)
Start register address (2 bytes)	Number of bytes in the data area (2*number of registers 1 byte)

(2) Function code 0x06–set data to slave device register

Master message	Correct message from the device
Slave device address (0x01-0x7F 1 byte)	Slave device address (0x01-0x7F 1 byte)
Function code (0x06 1 byte)	Function code (0x06 1 byte)
Start register address (2 bytes)	Number of bytes in the data area (2*number of registers 1 byte)
Data written to the register (2* number of registers 1 byte)	Data area (register content 2* register number 1 byte)

Note:

The low bit of the CRC check code is in front of the high bit, and the address of the register, the number of registers, and the data are high in the front and low in the back;

The register word length is 16bit (two bytes);

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How is wind speed defined in the register address?

1. Wind speed (0x002A)

The unit is 0.1m/s. That is, if the reading value is 100 (or 0x64), it means that the wind speed value is 10.0m/s

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How is wind direction defined in the register address?

2. Wind direction (0x002B)

The unit is 0.1 degrees. That is, if the reading value is 100 (or 0x64), it means that the wind direction is 10.0 degrees

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How is device number defined in the register address?

3. Device number (0x2000)

Range: 1~127. After modifying the device number, the data is only saved and does not take effect immediately. It will take effect after restarting.

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How is the baud rate defined in the register address?

4. Baud rate (0x2001)

Configurable baud rates: 2400, 4800, 9600, 14400, 19200, 38400, 56000, 57600, 115200. After modification, the data is only saved and does not take effect immediately. It will take effect after restarting.

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How do you read the wind speed value in the Communication protocol?

1. Read the wind speed value:

Slave address 02, baud rate 9600, N,8,1

Slave address	Function code	The high 8 bits of the start register address	The lower 8 bits of the start register address	The high 8 bits of the number of registers	The lower 8 bits of the number of registers	CRC lower 8 bits	CRC high 8 bits
0x02	0x03	0x00	0x2A	0x00	0x01	0xA5	0xF1

Response from the device (assuming the current wind speed value is 0x0064, which means the wind speed value is 10.0m/s)

Slave address	Function code	data area Bytes	Wind speed value high 8 bits	The lower 8 bits of the wind speed value	CRC lower 8 bits	CRC high 8 bits
0x02	0x03	0x02	0x00	0x64	0xFD	0xAF

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How do you read the wind direction value in the Communication protocol?

2. Read the wind direction value:

Slave address 02, baud rate 9600, N,8,1

Slave address	Function code	The high 8 bits of the start register address	The lower 8 bits of the start register address	The high 8 bits of the number of registers	The lower 8 bits of the number of registers	CRC lower 8 bits	CRC high 8 bits
0x02	0x03	0x00	0x2B	0x00	0x01	0xF4	0x31

Response from the device: (Assume the current wind direction value is 0x0384, which is 90.0°)

Slave address	Function code	data area Bytes	Wind speed value high 8 bits	The lower 8 bits of the wind direction value	CRC lower 8 bits	CRC high 8 bits
0x02	0x03	0x02	0x03	0x84	0xFC	0xD7

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How do you continuously read wind speed and direction values in the Communication protocol?

3. Continuously read wind speed and direction values:

Slave address 02, baud rate 9600, N,8,1

Slave address	Function code	register address	number of registers
0x02	0x03	0x00	0x02

Response from the device (assuming the current wind speed is 10.0m/s and the wind direction is 90.0°)

Slave addres s	Functio n code	data area Bytes	Wind speed value high 8 bits	The lower 8 bits of the wind speed value	High 8 bits of wind direction value	The lower 8 bits of the wind direction value	CRC lower 8 bits	CRC high 8 bits
0x02	0x03	0x04	0x00	0x64	0x03	0x84	0x88	0x7F

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How do you modify the device address in the Communication protocol?

4. Modify the device address:

Slave device address No. 02, changed to No. 03

Slave addre ss	Function code	start register address	bits of the start register address	Modified baud rate high 8 bits	Modified baud rate lower 8 bits	CRC lower 8 bits	CRC high 8 bits
0x02	0x06	0x20	0x00	0x00	0x03	0xc2	0x38

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How do you modify the baud rate to 9600 in the Communication protocol?

5. Modify the baud rate to 9600:

The baud rate is an integer multiple of 100, for example, 9600 baud rate should be set to 96, that is, 0x0060

Note: Modifying the baud rate and device address will take effect only after power off and restarting.

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What is the CRC check calculation method in the Communication protocol?

6. CRC check calculation method

   // // DESCRIPTION: High byte table of CRC-16 check // static const unsigned char HiCRCTable[] = { 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40, 0X01, 0XC0, 0X80, 0X41, 0X01, 0XC0, 0X80, 0X41, 0X00, 0XC1, 0X81, 0X40};

   // // DESCRIPTION: Low byte table of CRC-16 check // static const unsigned char LoCRCTable[] = { 0X00, 0XC0, 0XC1, 0X01, 0XC3, 0X03, 0X02, 0XC2, 0XC6, 0X06, 0X07, 0XC7, 0X05, 0XC5, 0XC4, 0X04, 0XCC, 0X0C, 0X0D, 0XCD, 0X0F, 0XCF, 0XCE, 0X0E, 0X0A, 0XCA, 0XCB, 0X0B, 0XC9, 0X09, 0X08, 0XC8, 0XD8, 0X18, 0X19, 0XD9, 0X1B, 0XDB, 0XDA, 0X1A, 0X1E, 0XDE, 0XDF, 0X1F, 0XDD, 0X1D, 0X1C, 0XDC, 0X14, 0XD4, 0XD5, 0X15, 0XD7, 0X17, 0X16, 0XD6, 0XD2, 0X12, 0X13, 0XD3, 0X11, 0XD1, 0XD0, 0X10, 0XF0, 0X30, 0X31, 0XF1, 0X33, 0XF3, 0XF2, 0X32, 0X36, 0XF6, 0XF7, 0X37, 0XF5, 0X35, 0X34, 0XF4, 0X3C, 0XFC, 0XFD, 0X3D, 0XFF, 0X3F, 0X3E, 0XFE, 0XFA, 0X3A, 0X3B, 0XFB, 0X39, 0XF9, 0XF8, 0X38, 0X28, 0XE8, 0XE9, 0X29, 0XEB, 0X2B, 0X2A, 0XEA, 0XEE, 0X2E, 0X2F, 0XEF, 0X2D, 0XED, 0XEC, 0X2C, 0XE4, 0X24, 0X25, 0XE5, 0X27, 0XE7, 0XE6, 0X26, 0X22, 0XE2, 0XE3, 0X23, 0XE1, 0X21, 0X20, 0XE0, 0XA0, 0X60, 0X61, 0XA1, 0X63, 0XA3, 0XA2, 0X62, 0X66, 0XA6, 0XA7, 0X67, 0XA5, 0X65, 0X64, 0XA4, 0X6C, 0XAC, 0XAD, 0X6D, 0XAF, 0X6F, 0X6E, 0XAE, 0XAA, 0X6A, 0X6B, 0XAB, 0X69, 0XA9, 0XA8, 0X68, 0X78, 0XB8, 0XB9, 0X79, 0XBB, 0X7B, 0X7A, 0XBA, 0XBE, 0X7E, 0X7F, 0XBF, 0X7D, 0XBD, 0XBC, 0X7C, 0XB4, 0X74, 0X75, 0XB5, 0X77, 0XB7, 0XB6, 0X76, 0X72, 0XB2, 0XB3, 0X73, 0XB1, 0X71, 0X70, 0XB0, 0X54, 0X50, 0X90, 0X91, 0X51, 0X93, 0X53, 0X52, 0X92, 0X96, 0X56, 0X57, 0X97, 0X55, 0X95, 0X94, 0X9C, 0X5C, 0X5D, 0X9D, 0X5F, 0X9F, 0X9E, 0X5E, 0X5A, 0X9A, 0X9B, 0X5B, 0X99, 0X59, 0X58, 0X98, 0X88, 0X48, 0X49, 0X89, 0X4B, 0X8B, 0X8A, 0X4A, 0X4E, 0X8E, 0X8F, 0X4F, 0X8D, 0X4D, 0X4C, 0X8C, 0X44, 0X84, 0X85, 0X45, 0X87, 0X47, 0X46, 0X86, 0X82, 0X42, 0X43, 0X83, 0X41, 0X81, 0X80, 0X40};

   // // ************** // Design Notes: // pMsg: the first address of the data buffer to be verified // iSize: length of data bytes to be verified // ***************************************** ******************************* unsigned short QuickCRC16( unsigned char * pMsg, unsigned short iSize) { unsigned char iHiVal; // high byte of CRC initialized unsigned char iLoVal; // low byte of CRC initialized unsigned char index; // will index into CRC lookup table

   // Initial value for the CRC iHiVal = 0xff; iLoVal = 0xff; while (iSize--) { // Calculate the CRC index = iLoVal ^ (unsigned char )(*pMsg++ ); iLoVal = iHiVal ^ HiCRCTable[index]; iHiVal = LoCRCTable[index]; } return (iHiVal << 8 | iLoVal); }

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What points should be observed during maintenance and maintenance of the equipment?

This instrument is a precision electronic product, correct maintenance and maintenance will help to protect the performance of the instrument and prolong the service life of the instrument, please pay attention to the following points:

1. Please use the instruction manual correctly according to the requirements of the instruction manual. Wrong wiring may cause damage to the instrument.
2. Do not wipe the instrument with volatile liquids, otherwise it may cause discoloration and deformation of the instrument; wipe with a soft cloth to avoid scratches on the outer protective film of the instrument and prolong the service life of the instrument.
3. The instrument should be handled with care, and should not be dropped or pressed heavily, otherwise it will cause deformation of the instrument and damage to the internal circuit board.
4. Do not touch the sensing part when the instrument is charged, so as to affect the measurement result or cause damage to the internal circuit of the instrument.
5. Please do not disassemble or modify the instrument without authorization, so as not to cause damage to the instrument.
6. When the instrument is in use, it should be firmly fixed with screws, otherwise the instrument may be damaged.
7. Regularly check the power supply voltage of the instrument to ensure the normal operation of the instrument.
8. Please do not modify the internal parameters of the equipment without permission, so as not to cause abnormal operation of the instrument. If you need to modify, please operate under the guidance of the manufacturer’s technical personnel.