This article explores solutions for modern PLC training that address the new requirements introduced by Industry 4.0. It proposes a laboratory setup where all components communicate via an MQTT Global Data Space. This configuration allows seamless integration of cloud-based models and digital twins into PLC systems through web browsers. Additionally, components such as data analysis tools, machine learning models, and AI algorithms can be connected efficiently and cost-effectively through MQTT interfaces. The proposed training approach is compatible with controllers from various manufacturers and eliminates the need for standalone installations or licensed software for technology models.