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 realize the connection between PLC

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 industry, and Modicon released it

The wireless communication module is the information portal for all types of smart terminals to access the Internet of Things. It is a key link connecting the perception layer and network layer of the Internet of Things. It is the underlying hardware and is irreplaceable.

Most of the modules involved in the Internet of Things are wireless communication modules. The function of the wireless communication module is to connect things with each other, allowing various Internet of Things terminal devices to achieve information transmission capabilities, and also allowing various smart

ZHC4012 is a seven-mode full network industrial-grade wireless data transmission terminal. It is designed to fully meet industrial standards and the needs of industrial users. It uses high-performance QUECTEL EC20 communication chip, software multi-level detection and hardware multi-protection mechanisms. Improve device stability. Supports 4G/3G/2G networks

The main function of 4G DTU is to transmit data from remote devices back to the background center wirelessly. Taking ZHC4921 of Zongheng Intelligent Control as an example, remote devices can be connected to the network to achieve remote operation and monitoring. The most common

The transmission mode application of the telemetry terminal RTU has four working modes: self-reporting, compatibility, query, and debugging. 1. Self-reporting working mode of telemetry terminal RTU When an event is triggered (the value of the measured element changes to a certain extent), the telemetry station

All Netcom DTU is an industrial-grade wireless data transmission terminal that provides users with the function of TCP transparent wireless long-distance data transmission or UDP transparent wireless long-distance data transmission. It supports the cellular networks of the three major operators of China Mobile, China Unicom

Analog quantity is a common signal point in the industrial control industry. Its function is to convert the value of physical quantity into an electrical signal. Analog output is basically used to control execution equipment, such as controlling the opening of valves, controlling the speed

The industrial wireless gateway ZHL4921 independently developed by Zongheng Intelligent Control adopts an industrial-grade high-performance embedded structure and has a professional integrated design of data collection and transmission for intelligent manufacturing, industrial automation and other fields. The gateway supports RS485/RS232/DI/AI/DO/LAN multiple interfaces, meeting the networking