Intelligent Material Sorting With PLC-Triggered Shutdown in Factory I/O Simulation

The design and simulation of an automated material sorting system using Siemens S7-1200 PLC integrated with Factory I/O and an HMI interface. It utilizes a combination of diffusion, vision and retroreflective sensors along with a pick-and-place mechanism to sort materials based on colour and stack them efficiently. A counter system is implemented to shut down the conveyor if more than 10 materials are processed, preventing potential damages. It is programmed using ladder logic and is entirely simulated within a virtual environment to enhance safety, precision, and operational efficiency in industrial automation. It integrates with the HMI and allows real-time monitoring and data visualization, providing operators with insights into the sorting process, sensor statuses, and conveyor operation. The use of a vision sensor ensures accurate color detection, while diffusion and retroreflective sensors enhance object positioning and detection precision. The pick-and-place mechanism, controlled by ladder logic in the PLC, ensures that materials are stacked correctly, contributing to efficient production workflows. By simulating the entire process in Factory I/O, the system provides a safe testing environment that mimics real- world manufacturing scenarios, allowing for further scalability and refinement before physical deployment.