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Wind Direction Transmitter-16
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1. Product Introduction
1.1 Product Overview
HC-FX100 Wind Direction Transducer, small and lightweight, easy to carry and assemble, through a brand new design concept can effectively obtain wind direction information, the shell is made of aluminum alloy material, using advanced surface treatment process, strong adhesion, high temperature resistance, rain and snow resistance and ultraviolet resistance, can be used outdoors for a long time. At the same time, the internal bearing scheme is used to ensure smooth and resistance-free rotation, ensuring the accuracy of information collection. It can be widely used in greenhouse, environmental protection, meteorological station, ship, dock, breeding and other environments for wind speed measurement.
1.2 Features
Range: 16 directions
Anti-electromagnetic interference treatment
High-performance bearings are used, with low turning resistance and precise measurement.
Full aluminum shell, high mechanical strength, high hardness, corrosion resistance, no rust, can be used outdoors for a long time.
The equipment structure and weight are carefully designed and distributed, with a small moment of inertia and quick response.
Standard ModBus-RTU communication protocol, easy to access
1.4 Product Selection
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RS- |
Company code |
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|
FXA- |
Aluminum shell wind direction transducer |
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N01- |
RS485 (ModBus protocol) |
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16 |
16 directions |
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1.5 Equipment size
2. Equipment installation instructions
2.1 Inspection before equipment installation
Equipment list:
■ Transducer equipment 1 unit
■Installation screws 4 pieces
■Certificate of Conformity, Warranty Card, Wiring Instructions, etc.
■USB to 485 (optional)
■485 Terminal resistor (optional)
■ Mounting plate 1 piece
2.2 Interface Description
Wide voltage power input of 5~30V is allowed. When connecting the 485 signal line, note that the A\B two lines cannot be connected in reverse, and the addresses of multiple devices on the bus cannot conflict.
2.3 Electrical wiring
|
Color line |
Explanation |
|
|
Electricity Source |
Brown |
Power positive (10~30V DC) |
|
Black |
Power negative |
|
|
Through Letter |
Yellow (green) |
485-A |
|
Blue |
485-B |
2.4 On-site wiring instructions
When multiple devices of model 485 are connected to the same bus, there are certain requirements for field wiring, please refer to the "485 Device Field Wiring Manual" in the reference package.
2.5 Installation method
Adopt flange installation, threaded flange connection to firmly fix the wind direction sensor on the flange, the base Ø79.8mm, evenly open four Ø6mm mounting holes on the Ø68mm circumference, use bolts to firmly fix it on the bracket, so that the whole instrument maintains the best level, to ensure the accuracy of the wind direction data, the flange connection is convenient to use, and can withstand a larger pressure.
2.6 Precautions
1. Users are not allowed to disassemble by themselves, and must not touch the sensor core, so as not to damage the product.
2. Try to stay away from high-power interference devices to avoid inaccurate measurement, such as frequency converters, motors, etc., and the power supply must be disconnected before installing and dismantling the transmitter, and water entering the transmitter can cause irreversible changes.
3. Prevent chemical reagents, oil, dust, etc. from directly invading the sensor, do not use it for a long time in a dew point environment, and strictly prevent sudden cold and heat.
3. Software installation and configuration;
3.1 Software selection
Open the data package, select "Debug Software"---"485 Parameter Configuration Software", find
Open it.
3.2 Parameter setting
①、Select the correct COM port ("My Computer - Properties - Device Manager - Ports" to view the COM ports), the following figure lists the drive name of several different 485 converters.
②、Connect only one device and power it on, click the test baud rate in the software, the software will test the current device's baud rate and address, the default baud rate is 4800 bit/s, and the default address is 0x01.
③、Modify the address and baud rate according to the use needs, and at the same time, you can check the current functional status of the device.
④、If the test is not successful, please re-check the equipment wiring and the installation of the 485 driver.
4. Communication protocol
4.1 Basic parameters of communication
|
Encoding |
8-bit binary |
|
Data bit |
8-bit |
|
Parity bit |
None |
|
Stop bit |
1 person |
|
Error checking |
CRC (Cyclic Redundancy Code) |
|
Baud rate |
2400bit/s, 4800bit/s, 9600 bit/s, 19200bit/s, 38400bit/s, 57600bit/s, 115200bit/s can be set, the factory default is 4800bit/s |
4.2 Data Frame Format Definition
Adopt ModBus-RTU communication protocol, the format is as follows:
Initial structure ≥4 bytes time
Address code = 1 byte
Function code = 1 byte
Data area = N bytes
Error checking = 16 bit CRC code
End structure ≥4 bytes time
Address code: The address of the transducer, which is unique in the communication network (factory default 0x01).
Function code: The function code indicates the command issued by the host, and this transducer only uses function code 0x03 (read register data).
Data Area: The data area is specific communication data, note that the high byte of 16-bit data is in front!
CRC code: a two-byte check code.
Host Inquiry Frame Structure:
|
Address code |
Function code |
Register start address |
Register length |
Check code low order |
Check code high order |
|
1 byte |
1 byte |
2-byte |
2-byte |
1 byte |
1 byte |
From the machine response frame structure:
|
Address code |
Function code |
Number of effective bytes |
Data area one |
Second data area |
The Nth data area |
Check code |
|
1 byte |
1 byte |
1 byte |
2-byte |
2-byte |
2-byte |
2-byte |
4.3 Register address
|
Register address |
PLC or configuration address |
Content |
Operation |
|
0000 H |
40001 |
Wind direction (0-359.9°) |
Read-only |
|
0001 H |
40002 |
(0-15) |
Read-only |
4.4 Numerical Corresponding Conversion Relationship
|
Collect value (0-15 scale) |
Acquisition value (0-360°) |
Corresponding direction |
|
0 |
348.75°---11.25° |
North wind |
|
1 |
11.25°---33.75° |
Northeasterly |
|
2 |
33.75°---56.25° |
Northeast wind |
|
3 |
56.25°---78.75° |
Dongdong Befeng |
|
4 |
78.75°---101.25° |
East wind |
|
5 |
101.25---123.75° |
East-southeast wind |
|
6 |
123.75°---146.25° |
Southeast wind |
|
7 |
146.25°---168.75° |
South-southeast wind |
|
8 |
168.75°---191.25° |
South wind |
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9 |
191.25°---213.75° |
South-southwest wind |
|
10 |
213.75°---236.25° |
Southwest wind |
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11 |
236.25°---258.75° |
Southwest wind |
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12 |
258.75°---281.25° |
West wind |
|
13 |
281.25°---303.75° |
West northwest wind |
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14 |
303.75°---326.25° |
Northwest |
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15 |
326.25°---348.75° |
Northwest wind |
4.5 Example of communication protocol and explanation
Example: Reading the wind direction from device address 0x01
Inquiry Frame:
|
Address code |
Function code |
Start address |
Data length |
Check code low order |
Check code high order |
|
0x01 |
0x03 |
0x00 0x00 |
0x00 0x02 |
0xC4 |
0x0B |
Response Frame:
|
Address code |
Function code |
Return the number of valid bytes |
Wind direction (0-360°) |
Wind direction (0-15) |
Check code low order |
Check code high order |
|
0x01 |
0x03 |
0x04 |
0x01 0x29 |
0x00 0x01 |
0xEB |
0xC7 |
Wind direction calculation:
(0-360°): 0129H(hex) = 297 => 29.7 degrees
(0-15): 0001H = 1 => Wind direction = North-northeast
5. Frequently Asked Questions and Solutions
5.1 Equipment cannot be connected to PLC or computer
Possible reasons:
1) The computer has multiple COM ports, the selected port is incorrect.
2) Device address error, or there are devices with duplicate addresses (all are 1 by default from the factory).
3) Baud rate, parity method, data bits, stop bits error.
4) The host polling interval and the waiting time for a response are too short, both need to be set to 200ms or more.
5)485 bus is broken, or A, B lines are reversed.
6) Too many devices or too long wiring, power should be supplied nearby, add 485 driver, and increase 120Ω termination resistor.
7)USB to 485 driver is not installed or damaged.
8) Equipment damage.
Technical indicators
|
DC power supply (default) |
5~30V DC |
|
Maximum power consumption |
0.2W (12V power supply) |
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Transducer circuit operating temperature |
-40℃~+60℃, 0%RH~80%RH |
|
Communication interface |
485 Communication (ModBus) protocol Data bit length: 8 bits Parity check method: None Stop bit length: 1 bit Default ModBus communication address: 1 Baud rates: 2400, 4800 (default), 9600, 19200, 38400, 57600, 115200 |
|
Measurement range |
16 directions |
|
Dynamic response speed |
≤0.5s |
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