The product is high-precision imported SHT20 temperature and humidity sensor to ensure excellent reliability, high precision and interchangeability. RS485 hardware interface (with lightning protection design), the protocol layer is compatible with the standard industrial Modbus-Rtu protocol. This product integrates MODBUS protocol with common protocol. Users can choose communication protocol by themselves. The common protocol has automatic upload function (connecting RS485 will automatically output temperature and humidity through serial port adjustment tool).
Features:
- Support MODBUS RTU protocol
- RS485 supports 1000 meters communication
- Standard DIN35 mounting rails
- High precision
Specifications:
- The baud rate defaults to 9600 (user can set it by itself), 8-bit data, 1 bit stop, no parity
- Product Number:XY-MD02
- Working Voltage:DC 5V~30V
- Output signal:RS485 signal
- Communication protocol:Modbus RTU and ordinary protocol
- Communication address:1~247(default 1)
- Temperature Range:-40℃~60℃
- Temperature Precision:+/-0.5℃
- Temperature Resolution:0.1℃
- Humidity Range:0%RH~55%RH
- Humidity Precision:+/-3%RH
- Humidity Resolution:0.1%RH
- Power:<0.2W
- Size:65*46*28.5mm
- Weight: 41g
MODBUS protocol
Function code used by the product:
- 0x03: read holding register
- 0x04: Read input register
- 0x06: Write a single holding register
- 0x10: Write multiple holding registers
To modify the slave address example:
- Modify slave address : 0x08 = 8
How to modify slave address in modbus poll software?
Step 1: Open Modbus Poll Software - Go to function - Open test center
Step 2: You need to write string value in Hex format
Step 3: Calculate CRC value from
HERE and take CRC-16 Modbus Value
Step:4 Example: 01 06 01 01 00 08 it will give output D8 30
Step 5: Write value in test center 01 06 01 01 00 08 D8 30 and on power reset it will update slave id to 8.
Example for slave id 2:
01 06 01 01 00 02 it will give output 58 37
write value in test center 01 06 01 01 00 02 58 37 and on power reset it will update slave id to 2.
Package Includes:
- 1 x Industrial Grade Temperature & Humidity Transmitter SHT20 Sensor High Precision Monitoring Modbus RS485
Downloads
