Autor: iot-de (page 156)

As a communication technology, 4G provides services for realizing telematics in a broad sense. As computers and various smart devices with processing functions are increasingly used in various fields, the application scope of data communications is also expanding. In the…

The combination of mobile communications and practical applications can provide users with flexible and efficient services. In the era of vigorous development of the Internet of Things, the wide application of 4G technology provides a wealth of solutions for all…

ZHC4012 is a 4G module DTU terminal equipment, providing 1RS485 and 1RS232. It can realize RS232/485 to 4G two-way data transmission function. Supports one-to-one and one-to-many networking; supports HTTP, TCP, UDP protocols, and supports Modbus RTU /TCP adaptation. The ear-mounted…

There are many solutions to choose from for the wireless network transmission technology of the Internet of Things. Different communication technologies have different characteristics and each have their own application scenarios. For example, WiFi can transmit a large amount of…

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…

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…