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Implementation plan and case analysis of plc industrial router 4G
4G wireless industrial-grade routers have become a common solution in various industries. For PLC engineers, remote access to PLC systems over the internet not only saves time by eliminating the need for on-site visits but also allows for timely troubleshooting and maintenance of machines. This approach helps reduce labor and material costs, improves customer service speed, and minimizes customer losses. Despite these benefits, challenges in remote PLC control still exist and require effective solutions.
The integration of 4G wireless industrial routers with PLCs has emerged as a promising application in modern industrial automation. This article explains the working principle of remote PLC control and demonstrates how the Huajie Intelligent Control HJ8300 4G industrial router supports remote monitoring and program downloading for various PLC brands, including Siemens, Mitsubishi, Omron, and Delta.
Currently, many users rely on IP mapping, VPNs, or tools like "Peanut Shell" or "Peanut Stick" for remote PLC access. However, these methods often involve complex configurations and are not always stable, making them inconvenient for daily use. With the introduction of Huajie's SmartLink technology, remote PLC control has become more straightforward and user-friendly.
The HJ8300 Industrial Router is specifically designed for remote PLC programming and monitoring via network ports or RS485/RS232 buses. It supports 4G, wired, or Wi-Fi communication, enabling remote monitoring of ladder diagrams and program downloads. The router connects to the PLC through a network port or serial interface (RS232/RS485), allowing remote access from any computer with an internet connection. No fixed IP address is required—just install the SmartLink green software and the relevant PLC programming software to enable remote debugging and configuration.
A real-world example involves connecting the HJ8300 to a PLC via an RS232 bus, then using 4G or ADSL to access the internet. Once the system is set up, the central control station can monitor and download programs using standard PLC software. The process is simple: after installing the configuration tool, create a virtual serial port, select it in the programming software, and start working remotely.
This solution supports multiple PLC models, including the DVP16ES200R, and provides a reliable, efficient way to manage industrial automation systems from anywhere. The setup includes configuring the HJ8300 router, installing a virtual serial port, and setting up the SmartLink software. Once connected, the router and computer are on the same SmartLink LAN, allowing seamless communication.
With this method, engineers can easily access and control remote PLCs without complicated configurations, making it a powerful tool for industrial automation and remote maintenance.