Abstract
The research presents a universal programmable logic controller with a modular architecture designed for real- time control, automation, and data management across diverse applications, such as smart technologies. The PLC features a base module with an ARM Cortex M3 processor, dual-mode power supply, real-time clock, and expandable hardware. Its software integrates a core system for hardware management, a Lua interpreter for logic programming, and libraries supporting communication protocols, file systems, and global positioning. This modular design ensures flexibility, scalability, and adaptability, enabling efficient deployment in areas like urban climate monitoring, energy conservation, and green technologies, significantly enhancing automation and operational efficiency.