Автор: iot-en (page 156)

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…

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…

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…

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…

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…

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…

my country has heavy rainfall in summer, and flood control work in small and medium-sized rivers often becomes the focus of preventing floods during the rainy season. Therefore, in today’s highly developed Internet of Things technology, using Internet of Things…

With the continuous development of the Internet of Things, more and more fragmented terminal devices realize network access. LoRa, as the most promising low-power wide-area communication technology at present, has been used in all walks of life. ZHC0561 and ZHC0661…

The rapid development of network and communication technology has provided RTU technology with more advanced and better performance, and has also brought wider applications to RTU products. In order to make it easy for beginners to use it, a simple…

Industrial DTU products provide a wireless, non-regional restricted data transmission and networking solution for various sensor devices and other terminals that require data transmission. The following article will briefly introduce several common DTU networking methods. 1. The process of data…