More Transmitter Sensors , Click here
DC power supply: 10-30VDC
Cable color |
instruction |
|
Power |
Brown |
10~30V DC power + |
Black |
Power – |
|
communication |
yellow |
485-A |
blue |
485-b |
Code |
8 bit binary system |
Data bits |
8bits |
parity check bit |
NO |
stop bit |
NO |
Error checking |
CRC |
baud rate |
2400bit/s4800bit/s9600 bit/s 4800bits by default |
2. Using Modbus-RTU communication protocol, the format is as follows:
The initial structure is more than 4 bytes of time
Address code = 1 bytes
Function = 1 bytes
Data area = N bytes
Error check = 16 bit CRC code
The end of the structure is greater than or equal to 4 bytes of time
Address code: the address of the transmitter, which is unique in the communication network (factory default 0x01).
Function code: the instruction function instruction from the host. The transmitter only uses the function code 0x03 (read register data).
Data area: data area is specific communication data, pay attention to 16bits data before the high byte!
CRC Code: two byte check code
Host query frame structure:
Address code |
Function code |
Register start address |
Register length |
check code low |
Check code high |
1 bytes |
1 bytes |
2 bytes |
2 bytes |
1 bytes |
1 bytes |
Slave transponder frame structure
Address code |
Function code |
effective byte |
No 1 Data area |
NO2 Data area |
No N Data area |
Check code |
1 bytes |
1 bytes |
1 bytes |
2 bytes |
2 bytes |
2 bytes |
2 bytes |
3.Register address
Register address |
PLC or configuration address |
content |
operation |
0000 H |
40001 |
humidity |
read-only |
0001 H |
40002 |
temperature |
read-only |
0002 H |
40003 |
Illuminance 0~200000Lux use unit 1Lux |
read-only |
0003 H |
40004 |
||
0006 H |
40007 |
Illuminance 0~65535 unit 1 Lux ,0~200000 unit 100Lux |
read-only |
4.Examples and explanations of communication protocols
4.1Read the temperature and humidity values of the device address 0x01
Query frame
Address code |
Function code |
Start address |
Data length |
check code low |
Check code high |
0x01 |
0x03 |
0x00 0x00 |
0x00 0x02 |
0xC4 |
0x0B |
Response frames (for example, read the temperature of -10.1 degrees C and humidity of 65.8%RH)
Address code |
Function code |
effective byte |
humidity |
temperature |
check code low |
Check code high |
0x01 |
0x03 |
0x04 |
0x02 0x92 |
0xFF 0x9B |
0x5A |
0x3D |
.
Temperature: when the temperature is below 0 degrees, it is uploaded in the form of complement
FF9B H (Hexadecimal) = -101 = -10.1 = > temperature c
Humidity:
292 H (Hexadecimal) =658=> humidity = 65.8%RH
4.2 Read the illumination value of the device address 0x01
(0~65535 reads in 1Lux or 0~200000 reads in a hundred Lux units)
Query frame
Address code |
Function code |
Start address |
Data length |
check code low |
Check code high |
0x01 |
0x03 |
0x00 0x06 |
0x00 0x01 |
0x64 |
0x0B |
Response frames (for example, read illumination is 200000 Lux)
Address code |
Function code |
Returns the number of valid bytes |
Data area |
check code low |
Check code high |
0x01 |
0x03 |
0x02 |
0x05 0x30 |
0xBB |
0x00 |
Illumination calculation description:
1) the product is 0~65535 range transmitter, the unit is 1Lux
0530 H (sixteen hex) = 1328=> illuminance =1328 Lux
2) the product is 0~200000 range transmitter, the unit is 100 Lux
0530 H (sixteen hex) = 1328=> illuminance =132800 Lux
4.3 Read the illumination value of the device address 0x01 (0~200000 is read as 1Lux)
Query frame
Address code |
Function code |
Start address |
Data length |
check code low |
Check code high |
0x01 |
0x03 |
0x00 0x02 |
0x00 0x02 |
0x65 |
0xCB |
Response frames (for example, read illumination is 200000 Lux)
Address code |
Function code |
Significant bytes |
High light intensity |
low light intensity |
check code low |
Check code high |
0x01 |
0x03 |
0x04 |
0x00 0x03 |
0x0D 0x40 |
0x0F |
0x53 |
Illumination calculation description:
This protocol is only used under the 0~200000Lux range transmitter, 1Lux
30D40, H (sixteen hex) = 200000=>, illuminance =200000, Lux
4.4 Read the temperature, humidity, and illumination values of the address 0x01 of the device
(0~65535 reads in 1Lux or 0~200000 reads in a hundred Lux units)
Query frame
Address code |
Function code |
Start address |
Data length |
check code low |
Check code high |
0x01 |
0x03 |
0x00 0x00 |
0x00 0x07 |
0x04 |
0x08 |
Response frames
Address code |
Function code |
Bytes |
humidty |
temperature |
** |
Illuminance |
Check code |
0x01 |
0x03 |
0x0E |
0x02 0x92 |
0x80 0x65 |
00 Fill |
0x05 0x30 |
0xC4 0x33 |
4.5 Read the temperature, humidity, and illumination values of the address 0x01 of the device
(0~200000 reads in 100 Lux units)
Address code |
Function code |
Start address |
Data length |
check code low |
Check code high |
0x01 |
0x03 |
0x00 0x00 |
0x00 0x04 |
0x44 |
0x09 |
Response frames
Address code |
Function code |
Bytes |
humidty |
temperature |
Illuminance high |
Illuminance low |
Check code |
0x01 |
0x03 |
0x03 0x08 |
0x02 0x92 |
0x80 0x65 |
0x00 0x03 |
0x0D 0x40 |
0x01 0x6F |
5. The device cannot connect to PLC or computer
Possible causes:
1) the computer has multiple COM ports, and the choice is incorrect.
2) device address error, or the existence of repeated address devices (factory default all 1).
3) baud rate, check mode, data bits, stop bit error.
4) The 485 bus is disconnected, or the A and B lines are reversed.
5) If the number of devices is too large or the wiring is too long, the power should be supplied nearby, add 485 booster, and increase the resistance of 120 terminal.
6) The USB to 485 driver is not installed or damaged.
7) Equipment damage.
More options for Transmitter.
Transmitter power supply 24/V2A DC power supply
CO gas sensor module with humidiity temperature Transmitter 4-20MA/0-10V /0-5V/RS485
0-65535lux 3in1 light intensity sensor/RS485 modbus protocol Temperature and humidity Transmitter
Light intensity sensor Transmitter 4-20mA 0-10V 0-5V
0-65535lux Light intensity sensor Transmitter RS485
0-200000lux 3in1 light intensity sensor/RS485 modbus protocol Temperature and humidity Transmitter
0-200000lux Light intensity sensor Transmitter RS485
TVOC Transmitter MODBUS RS485 Air Quality Transmitter 0-60000ppb
High precision RS485 CO2 Transmitter
co2 gas sensor module 485 modbus
CO2 sensor module 4-20mA /0-10V /0-5V CO2 Transmitter
noise sensor transmitter Rs485 modbus
noise sensor transmitter 4-20mA/0-5V/0-10V
Flooding transmitter RS485 Modbus +Switch output
Flooding transmitter sensor Leak detection alarm sensor Relay output
Temperature and humidity sensor Transmitter RS485 with probe
waterproof Temperature and humidity sensor Transmitter RS485
waterproof Temperature and humidity sensor Transmitter RS485 Transmitter
soil PH sensor module RS485 MODBUS-RTU
soil PH sensor module RS485 MODBUS-RTU WITH LED display
PM2.5 PM10 Dust detector Transmitter 4-20mA/0-10V Air quality transmitter
PM2.5/PM10 Sensor RS485 modbus transmitter
NH3 sensor module 4-20mA /0-10V NH3 Transmitter
NH3 sensor module RS485 MODBUS-RTU NH3 Transmitter
atmospheric pressure sensor Transmitter RS485
Atmospheric pressure sensor Transmitter 4-20mA/0-5V/0-10V
LEL Transmitter sensor 0-5V/0-10V/4-20MA
LEL Transmitter sensor CH4 C3H8 Combustible gas detector sensor RS485
Rain and snow Transmitter Switch type
Rain and snow Transmitter RS485 + Switch type
Rain and snow Transmitter RS485+Switch type with heating
Rain and snow Transmitter Switch type with heating
aluminum wind speed sensor Transmitter 0-20MA/0-10V /0-5V/RS485
aluminum wind speed sensor Transmitter pulse PNP NPN NPNR output
Metal 360 degree Wind direction sensor transmitter 4-20ma/0-10v/0-5V
Metal 360 degree Wind direction sensor transmitter RS485 ModBus-RTU
Customer Service
PAYMENT
1.Aliexpress supports Visa , Boleto , MasterCard ,Maestro Debit Card ,Western Union,Webmoney,QIWI and wire transfer via bank.
2.If you still have any question for payment, please feel free to contact us freely .
SHIPPING
1.When you place an order, please choose a shipping method and pay for the order including the shipping fee.
2.We will send the items with 2-5days once the payment is confirmed by the system.
3. Any import Taxes is not included in the shipping fee, buyers are responsible for the customs duties when it is occurred .
4.Any request to get the refund ,please send back the items back to us. Customers should pay the freight back to China if problems if yours .
on the other side, if problem is ours we will pay the shipping fee.
5.Express shipping (DHL,Fedex,UPS,TNT etc) and post service are provided for the shipping. 3-7Days will be arrived to your door by Express shipping
Post service Such as China Post Register Air Mail ,Singapore post, Hongkong Post Air Mail reach most countries within 15-45 business days,
Some destination and other factors may take up to 60 business days.
Please pay attention : Order less than 7 USD will not have tracking number but you will get the items for sure,
please contact us to get a refund or resent if you dont get within 60 working days .
FEEDBACK
1.Your satisfaction and positive feedback is very important to us, please leave positive feedback and 5 stars if you are satisfied with our items and service .
2.If you have any problems with our items or our items or service , please feel free to contact us first before you leave negative feedback .
We will do our best to solve any problems and provide you with the best customer service .
CONTACT US
1. Service to worldwide,Wholesale ,retail, drop shipping , Customized support.
2. Working time: (UTC+8) 8:45-12:00am; 13:00-22:00 pm .Feel free to contact us




Reviews
There are no reviews yet.