Autor: iot-es (página 136)

A relay is an electronic control device that has a control system (also called an input loop) and a controlled system (also called an output loop). It is usually used in automatic control circuits. It actually uses a smaller current…

RTU (Remote Measurement and Control Terminal) is widely used in various industries such as building, HVAC, fire protection, water supply, petrochemical, environmental protection and other industries because of its telemetry, remote signaling, remote adjustment and remote control functions. However, as…

In fields such as industrial control, power communications, and smart instruments, serial communication is usually used for data exchange. The initial method used was the RS232 interface. Due to the complexity of the industrial site, various electrical equipment will produce…

DTU communicates with the data center mainly by actively initiating a communication connection with the data center. Because DTU is on the mobile intranet and the IP address is not fixed. Therefore, the DTU can only actively connect to the…

Modbus is a communication protocol developed by the American company Modicon (now Schneider Electric) in 1979. Its purpose is to use a twisted pair to achieve communication between multiple devices. Modbus soon became the de facto standard in the automation…

In recent years, with the increasing improvement of Internet of Things technology, wireless network communication has gradually broken the limitations of PLC local communication control. Nowadays, PLC remote control has become the basic demand of many customers. So, how to…

RTU is a special computer measurement and control unit with modular structure designed for long communication distances and harsh industrial site environments. It connects end detection instruments and actuators with the main computer of the remote control center and has…

RTU is an electronic device installed at a remote site. It is used to monitor and measure sensors and equipment installed at a remote site. It is responsible for monitoring and controlling on-site signals and industrial equipment. The RTU converts…

ZHC4941 is the latest network IO controller launched by Chengdu Zongheng Intelligent Control for the market. It supports 16 channels of IO input/output (8DI 8DO), supports 8 channels of 4~20mA analog quantity acquisition (8AI), supports RS485 local control, and It…

The wireless industrial gateway is a device that integrates functions such as data collection, protocol conversion, and wireless router, and has powerful edge computing functions. Wireless industrial gateways can perform networking operations on IoT devices on a variety of occasions…

With the development of science and technology, RTU technology is increasingly used in various fields. Compared with traditional programmable controllers (PLCs), RTUs have excellent communication capabilities and larger data storage capacity, are particularly suitable for harsh temperature and humidity environments,…

The wireless data transmission module mainly uses RS485 communication method to transmit wired collection end data to the module, and then transmits the data through wireless transmission to realize data transmission between wired devices and wireless devices. The wireless data…