Product description
DC power supply (default) | DC 10-30V | ||
Maximum power consumption | 0.4W | ||
A precision | humidity | ±2%RH(60%RH,25℃) | |
temperature | ±0.4℃（25℃） | ||
B quasi-accuracy | humidity | ±3%RH(60%RH,25℃) | |
temperature | ±0.5℃（25℃） | ||
(default) | -20℃~+60℃，0%RH~95%RH（Non-condensing） | ||
-40℃~+120℃ default：-40℃~+80℃ | |||
Transmitter circuit operating temperature and humidity | 0%RH-100%RH | ||
Probe working temperature | Modbus-RTU letter of agreement | ||
Probe working humidity | 485 Signal | ||
letter of agreement | 0.1℃ | ||
output signal | 0.1%RH | ||
Temperature display resolution | 1s | ||
Humidity display resolution | 70mm | ||
Temperature and humidity refresh time | humidity | ≤1%RH/y | |
temperature | ≤0.1℃/y | ||
Response time | humidity | ≤8s(1m/sWind speed) | |
temperature | ≤25s(1m/sWind speed) | ||
parameter settings | Direct modification through software settings or buttons | ||
System scheme block diagram
Equipment List：
Wall mount
The back of the transmitter is equipped with a slide rail mounting plate. Remove the mounting plate first. There are two expansion plugs and two self-tapping screws in the accessories. First, punch two holes with a diameter of 5mm and a depth of ≥30mm on the wall (the opening spacing is 70mm). After inserting the expansion plug, fix the slide rail mounting plate to the wall with self-tapping screws, and finally slide the transmitter into it.
Slide rail installation
The back of the transmitter is equipped with a slide rail mounting plate. Remove the mounting plate first. The transmitter can be slid directly into the standard 35 rail。
Special Note：
1) There are certain specification requirements for 485 line field wiring. For details, please refer to the data package "485 Equipment Field Wiring Manual".
2) When the device is connected to the 485 bus, ensure that the addresses of multiple devices will not be repeated.
Circuit identification | illustrate | |
power supply | VCC | V+（10~30VDC） |
GND | V- | |
Communication | 485A | 485-A |
485B | 485-B |
If the device address is less than 100, the decimal address is displayed at the display location of the device address; if the device address is greater than 100, the hexadecimal address is displayed at the display location of the device address.
3. Configuration software installation and use
（The device does not provide a communication line by default, the color of the line is for reference only）
Code | 8-bit binary |
Data bit | 8-bit |
Parity bit | without |
Stop bit | 1 person |
Error checking | CRC (Redundant Cyclic Code) |
Baud rate | 2400bit/s, 4800bit/s, 9600 bit/s can be set, the factory default is 4800bit/s |
Using Modbus-RTU communication protocol, the format is as follows:
Initial structure ≥ 4 bytes of time
Address code = 1 byte
Function code = 1 byte
Data area = N bytes
Error check = 16-bit CRC code
Time to end structure ≥ 4 bytes
Address code: the address of the transmitter, which is unique in the communication network (factory default 0x01).
Function code: The command function instruction issued by the host, this transmitter only uses function code 0x03 (read register data).
Data area: The data area is the specific communication data, pay attention to the high byte of the 16bits data first!
CRC code: two-byte check code.
Host query frame structure:
address code | function code | Register start address | Register length | Check code low bit | High bit of check code |
1byte | 1byte | 2byte | 2byte | 1byte | 1byte |
Slave response frame structure：
address code: | function code | Number of valid bytes | Data area | Second data area | Nth data area | Check code |
1byte | 1byte | 1byte | 2byte | 2byte | 2byte | 2byte |
Register address (Hexadecimal) | Register address (10 hex) | PLC or configuration address (10 hex) | content | operate |
0000 H | 0 | 40001 | humidity (Expanded by 10 times the actual humidity) | Read only |
0001 H | 1 | 40002 | temperature (Expanded by 10 times the actual temperature) | Read only |
07D0H | 2000 | 42001 | Device address | Read and write |
07D1H | 2001 | 42002 | Device baud rate | Read and write |
Example: Read the temperature and humidity value of the device address 0x01
Inquiry frame (hexadecimal):
address code: | function code | initial address | Data length | Check code low bit | High bit of check code |
0x01 | 0x03 | 0x00 0x00 | 0x00 0x02 | 0xC4 | 0x0B |
Response frame (hexadecimal): (for example, the temperature is -10.1℃ and the humidity is 65.8%RH)
address code: | function code | Returns the number of valid bytes | Humidity value | Temperature value | Check code low bit | High bit of check code |
0x01 | 0x03 | 0x04 | 0x02 0x92 | 0xFF0x9B | 0x5A | 0x3D |
Long press the screen to identify the QR code
Open the phone to scan QR code
