SHT20 RS485 Temperatur- und Feuchtigkeitssender-Sensormodul Digitale hochpräzise industrielle Modbus-Rtu-Protokollüberwachung
Product introduction: The product uses industrial-grade chips and high-precision imported SHT20 temperature and humidity sensors to ensure the excellent reliability, high precision and interchangeability of the product. Using RS485 hardware interface (with lightning protection design), the protocol layer is compatible with the standard industrial Modbus-Rtu protocol. This product integrates the MODBUS protocol and the common protocol. The user can choose the communication protocol by himself. The common protocol has an automatic upload function (connecting RS485 and passing the serial port adjustment tool will automatically output temperature and humidity). Features: Industrial grade product, high progress SHT20 temperature and humidity sensor, RS485 communication; Standard MODBUS protocol and common protocol are integrated, users can choose communication protocol by themselves; The baud rate can be set by yourself; The common protocol has an automatic upload function, and the upload rate can be set by yourself. Product parameters: Working voltage: DC4-30V (the highest should not exceed 33V) Maximum power: 0.2W Working temperature: temperature -20℃+60℃, humidity 0%RH-100%RH Control accuracy: temperature ±0.3℃(25℃), humidity ±3%RH(25℃) Output interface: RS485 communication (standard MODBUS protocol and custom common protocol), see protocol description for details Device address: 1-247 can be set, the default is 1 Baud rate: default 9600 (users can set by themselves), 8 data, 1 stop, no parity. MODBUS protocol products used in the function code: 0 x03:read holding registers 0 x04:read input registers 0 x06:write a single holding register 0 x10:write multiple hold registers Modbuscommunication Format: the host sends a data frame: the slave address function Code register Address the high byte register Address the low byte number of registers the high byte number of registers the low byte C