SONBEST SD3790B High Temperature Pipe LED Wind Speed Sensor User Manual

SON BEST SD3790B High-Temperature Pipe LED Wind Speed Sensor

INTRODUCTION

SD3790B using the standard, easy access to PL C DCS and other instruments or systems for monitoring wind speed state quantities. The internal use of high precision sensing core and related devices to ensure high reliability and excellent long-term stability can be customized RS232, RS485, CAN,4 20mA, DC0~ 5V 10V, ZIGBEE, Lora, WIFI, GPRS, and other output methods.

Technical Parameters

Product Selection
Product DesignRS485,4 20mA,DC0 5V,DC0 10VMultiple output methods, the products are divided into the following models depending on the output method.

Product Size

How to wiring?

Application solution

How to use?

Communication Protocol
The product uses RS485 MODBUS RTU standard protocol format, all operation or reply commands are hexadecimal data. The default device address is 1 when the device is shipped, the default baud rate is 9600, 8, n, 1

Read Data (Function id 0x03)

Inquiry frame (hexadecimal), sending example: Query 1# device 1 data, the host computer sends the command:01 03 00 00 00 01 84 0A .

For the correct query frame, the de vice will respond with data:01 03 02 00 79 79 A6 , the response format is parsed as follows:

Data Address Table

read and modify device address

Read or query device address
If you don’t know the current device address and there is only one device on the bus, you can use the command FA 03 00 64 00 02 90 5F Query dev ice address.

For the correct query command, the device will respond, for example the response data is: 01 03 02 07 12 3A 79, the format of which is as shown in the following table:

Change device address
For example, if the current device address is 1, we want to change to 02, the command is:01 06 00 66 00 02 E8 14 .

After the cha nge is successful, the device will return information: 02 06 00 66 00 02 E8 27 , its format is parsed as shown in the following table:

Read and Modify Baud Rate

Read baud rate
The device default factory baud rate is 9600. If you need to change it, you can change it according to the following table and the corresponding communication protoco l. For example, read the current device’s baud rate ID, the command is:01 03 00 67 00 01 35 D5 , its format is parsed as follows.

Read the baud rate encoding of the current d evice. Baud rate encoding: 1 is 2400; 2 is 4800; 3 is 9600; 4 is 19200; 5 is 38400; 6 is 115200. For the correct query command, the device will respond, for example the response data is: 01 03 02 00 03 F8 45, the format of which is as shown in the foll owing table:

Change the baud rate
For example, changing the baud rate from 9600 to 38400, ie changing the code from 3 to 5, the command is: 01 06 00 67 00 05 F8 1601 03 00 66 00 01 64 15 .

Read Correction Value

Read Correction Value
When there is an error between the data and the reference standard, we can reduce the display error by adjusting the correction value. The correction difference can be modified to be plus or minus 1000, t hat is, the value range is 0 1000 or 64535 65535. For example, when the display value is too small, we can correct it by adding 100. The command is: 01 03 00 6B 00 01 F5 D6 . In the command 100 is hex 0x64 If you need to reduce, you can set a negative val ue, such as 100, corresponding to the hexadecimal value of FF 9C, which is calculated as 100 65535=65435, and then converted to hexadecimal to 0x FF 9C. The correction value starts from 00 6B. We take the first parameter as an example. The correction valu e is read and modified in the same way for multiple parameters.

For the correct query command, the device will respond, for example the response data is: 01 03 02 00 64 B9 AF, the format of which is as shown in the following table:

Change correction value

For example, the current state quantity is too small, we want to add 1 to its true value, and the current value plus 100 correction operatio n command is:01 06 00 6B 00 64 F9 FD

For example, the range is 0~30m/s, the analog output is 4~20mA current signal, wind speed and current The calculation relationship is as shown in the formula: C = (A2 A1) * (X B1) / (B2 B1) + A1, where A2 is wind speed range upper limit, A1 is the lower limit of the range, B2 is current output range upper limit, B1 is the lower limit, X is the currently read wind speed value, and C is the calculated current value. The list of commonly used values is as follows:

For example, the range is 0~30m/s, the analog output is 0~5V DC0 5Vvoltage signal, wind speed andDC0 5Vvoltage The calculation relationship is as shown in the formula: C = (A2 A1) * (X B1) / (B2 B1) + A1, where A2 is wind speed range upper limit, A1 is the lower limit of the range, B2 is DC0 5Vvoltage output range upper limit, B1 is the lower limit, X is the currently read wind speed value, and C is the calculated DC0 5Vvoltage value. The list of commonly used values is as follows:

For example, the range is 0~30m/s, the analog output is 0~10V DC0 10Vvoltage signal, wind speed and DC0 10Vvoltage The calculation relationship is as shown in the formula: C = (A2 A1) * (X B1) / (B2 B1) + A1, where A2 is wind speed range upper limit, A 1 is the lower limit of the range, B2 is DC0 10Vvoltage output range upper limit, B1 is the lower limit, X is the currently read wind speed value, and C is the calculated DC0 10Vvoltage value. The list of commonly used values is as follows:

Disclaimer

This document provides all information about the product , does not grant any license to intellectual property, does not express or imply, and prohibits any other means of granting any intellectual property rights, such as the statement of sales terms and conditions of this product, other issues. No liability is assumed. Furthermore, our company makes no warranties, express or implied, regarding the sale and use of this product, including the suitability for the specific use of the product, the marketability or the infringement liability for any patent, copyright or other intellectual property rights, etc. Product specifications and product descriptions may be modified at any time without notice.

Contact Us

Company: Shanghai Sonbest Industrial Co., Ltd Address:Building 8,No.215 North east r oad,Baoshan District,Shanghai,China
Web: http://www.sonbest.com
Web: http://www.sonbus.com
SKYPE: soobuu
Email: sale@sonbest.com
Tel: 86 021 51083595 / 66862055 / 66862075 / 66861077

References

• Home-上海搜博实业有限公司
• Home-SONBEST -SONBUS.COM| THE SENSOR COMPANY
• Home-SONBEST -SONBUS.COM| THE SENSOR COMPANY

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