An RS485 serial interface current sensor snap on type mutual inductor supports Modbus communication protocol

Open type current transformer can convert AC analog signal into 485 A current sensor for digital signals （ Transformer ）, Product built in ARM series MCU And high-precision metering chips , Multipoint calibrated current conversion module . With high precision , Fast response . It can be connected with common data acquisition gateways in the market 、DTU、 Programmable controller PLC、 The upper computer directly carries out data interaction .

Widely used in AC motor , lighting , Air compressor , Heating, ventilation and air conditioning equipment , Self control system of building , equipment OEE Power on rate 、 Industrial Internet , Current monitoring and acquisition scenarios for rural power grid reconstruction project and other scenarios .

2. Service concept

Make a solemn promise :
It's not just products , And then there's detail 、 Thoughtful technical support service ！！！( =^_= )

Our wireless products , We offer free remote guidance , Remote configuration debugging service , Send the data to the user specified cloud platform .

Provide free Internet of things solutions consulting services ！

3. Product characteristics

Line sequence definition

Red :+12V black ：GND yellow ：485A white ：485B

Thread length ： Default 1 rice

Acquisition characteristics

Current detection range : AC 0.2A-100A, Other large range transformers can be customized
Electrical characteristics

Power supply mode ：5~24V Direct
Working power consumption ：0.5W
Working frequency ：50-60Hz
Communication features

transport ：RS485
Communication protocol : Modbus RTU
Structural properties

texture of material ：ABS plastic （ Shell ）
Installation mode ： Buckle installation
The work environment

temperature -20°C～70°C
Storage environment

temperature -20°C～80°C
4. Core advantages of the product

Adopt high-precision metering chip , High measurement accuracy
Open and close design , Easy to install
Simple installation , Rapid deployment , Promote the rapid implementation of Internet of things projects
5.Modubus Communication protocol description

5.1 Serial communication parameters
Baud rate ：9600 Data bits ：8 check ：NONE Stop bit ：1

5.2 Function code definition
The upper computer reads the data or accepts the alarm data 03 Function code .

The upper computer controls the lower computer equipment （ Transformer ） use 06 Function code .

5.3 Register point table definition

5.4 Example of communication message
collection 01 Current data of No. 1 slave device

Host request message

Slave response message

Data analysis description ： The first 1 Bit is the device address of the response message , The first 4、5 、6、7 Bit is collected 32 Bit current data （32 Base number 0x00030071 It's equal to the decimal system 196722, precision 0.0001(A), The corresponding current is 19.6722(A), The first 8、9 Position as CRC Check bit .