DTLS

Comprehensive Guide to Reading and Writing Local Real Time on S7-1200 PLC

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Comprehensive Guide to Reading and Writing Local Real Time on S7-1200 PLC

In the field of industrial control, time is a core dimension that runs through the entire production process—from timestamping device operation logs to timed production scheduling, and to accurately tracing the moment of faults, all of which rely on the PLC’s precise control of real-time. The S7-1200 PLC, as the core device of Siemens’ small … Read more

CoAP: The ‘Lightweight Agent’ of the IoT, Tackling Big Challenges with Minimal Size

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CoAP: The 'Lightweight Agent' of the IoT, Tackling Big Challenges with Minimal Size

🤔 Introduction: When IoT Devices Start ‘Dieting’… Imagine your smart light bulbs, temperature and humidity sensors, and door locks collectively protesting: “HTTP is too bulky! MQTT is too complex! We need a protocol that can fit into a bikini!” Thus, CoAP (Constrained Application Protocol) makes its grand entrance—it dances the ‘minimalist dance’ on resource-constrained devices … Read more