SONBEST SM2130B-WT RS485 Interface Water Immersion Sensor User Manual
- June 5, 2024
- SONBEST
Table of Contents
SONBEST SM2130B-WT RS485 Interface Water Immersion Sensor
SM2130B-WT using the standard RS485 bus MODBUS-RTU protocol,easy access to PLC，DCS and other instruments or systems for monitoring flooding 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
| Technical parameter | Parameter value |
|---|---|
| Brand | SONBEST |
| Detection Carrier | Water or Rain |
| Output signal | switching or RS485 or RS485 & switching |
| Communication Interface | RS485 |
| Default baud rate | 9600 8 n 1 |
| Power | DC9~24V 1A |
| Running temperature | -40~80°C |
| Working humidity | 5%RH~90%RH |
Communication Protocol
The product uses RS485 MODBUS MODBUS-RTU standard protocol format, all operation or reply commands are hexade cimal 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 comman d:01 03 00 00 00 01 84 0A .
| Device ID | Function id | Start Address | Data Length | CRC16 |
|---|---|---|---|---|
| 01 | 03 | 00 00 | 00 01 | 84 0A |
For the correct query frame, the device will respond with data:01 03 02 00 79 79 A6 , the response format is parsed as follows
| Device ID | Function id | Data Length | 数据 1 | Check Code |
|---|---|---|---|---|
| 01 | 03 | 02 | 00 79 | 79 A6 |
Data Description: The data in the command is hexadecimal. Take data 1 as an example. 00 79 is converted to a decimal value of 121. If the data magnification is 100, the actual value is 121/100=1.21. Others and so on
| Address | Start Address | Description | Data type | Value range |
|---|---|---|---|---|
| 40001 | 00 00 | 1#floodingregister | Read only | 0~65535 |
Data Address Table
| 40101 | 00 64 | model code | read/write | 0~65535 |
|---|---|---|---|---|
| 40102 | 00 65 | total points | read/write | 1~20 |
| 40103 | 00 66 | Device ID | read/write | 1~249 |
| 40104 | 00 67 | baud rate | read/write | 0~6 |
| 40105 | 00 68 | mode | read/write | 1~4 |
| 40106 | 00 69 | protocol | read/write | 1~10 |
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 ca n use the command FA 03 00 64 00 02 90 5F Query device
address.
| Device ID | Function id | Start Address | Data Length | CRC16 |
|---|---|---|---|---|
| FA | 03 | 00 64 | 00 02 | 90 5F |
FA is 250 for the general address. When you don’t know the address, you can use 250 to get the real device address , 00 64 is the device model 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:
| Device ID | Function id | Start Address | Model Code | CRC16 |
|---|---|---|---|---|
| 01 | 03 | 02 | 55 3C 00 01 | 3A 79 |
Response should be in the data, the first byte 01 indicates that the real address of the current device is, 55 3C converted to decimal 20182 indicates that the current device main model is 21820, the last two bytes 00 01 Indicates that the device has a status quantity.
| Device ID | Function id | Start Address | Destination | CRC16 |
|---|---|---|---|---|
| 01 | 06 | 00 66 | 00 02 | E8 14 |
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 .
| Device ID | Function id | Start Address | Data Length | CRC16 |
|---|---|---|---|---|
| 01 | 03 | 00 67 | 00 01 | 35 D5 |
After the change 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:
| Device ID | Function id | Data Length | Rate ID | CRC16 |
|---|---|---|---|---|
| 01 | 03 | 02 | 00 03 | F8 45 |
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 .
| Device ID | Function id | Start Address | Data Length | CRC16 |
|---|---|---|---|---|
| 01 | 03 | 00 6B | 00 01 | F5 D6 |
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:
| Device ID | Function id | Data Length | Data value | CRC16 |
|---|---|---|---|---|
| 01 | 03 | 02 | 00 64 | B9 AF |
Chang e the baud rate from 9600 to 38400, changing the code from 3 to 5. The
new baud rate will take
effect immediately, at which point the device will lose its response and the
baud rate of the device should
be queried accordingly. Modified.
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, that 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 value,
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 value is read and modified in the same way for
multiple parameters.
| Device ID | Function id | Start Address | Destination | CRC16 |
|---|---|---|---|---|
| 01 | 06 | 00 6B | 00 64 | F9 FD |
In the r esponse data, the first byte 01 indicates the real address of the
current device, and 00 6B is the first state quantity correction value
register. If the device has multiple parameters, other parameters operate in
this way. The same, the general temperatur e, humidity have this parameter,
the light generally does not have this item
first state quantity correction value register.
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 operation c ommand is:01
06 00 6B 00 64 F9 FD .
| Device ID | Function id | Start Address | Destination | CRC16 |
|---|---|---|---|---|
| 01 | 06 | 00 6B | 00 64 | F9 FD |
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 road,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æœåšå®žä¸šæœ‰é™å…¬å¸
- Home-SONBEST -SONBUS.COM| THE SENSOR COMPANY
- Home-SONBEST -SONBUS.COM| THE SENSOR COMPANY
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>