Power over Ethernet Architecture Analysis for Industrial Routers and IoT Devices — Wavetel IoT Technical White Paper — Table of Contents PoE Technology Overview: Why Industrial Sites Increasingly Depend on PoE What is PD / PoE IN (Powered Device) 2.1 Concept Explanation 2.2 Common PD Devices 2.3 Value of Industrial Routers as PD What is PSE / PoE OUT (Power Sourcing Equipment) 3.1 Concept Explanation 3.2 Common PSE Devices 3.3 Significance of Industrial Router PoE OUT Support

Table of Contents Necessity of Industrial Router Certification General Certifications: The Industrial Router's "Foundational Firewall" 2.1 Certification Comparison Table: General Certifications Quick Overview (Including Typical Cycle) EMC Electromagnetic Compatibility Certification Safety Certification Environmental and Reliability Testing Ingress Protection (IP) Certification Lightning and Surge Protection Industry-Specific Certifications: The "Customized Shield" for High-Ri

Table of Contents Why Chip Architecture Matters for Industrial Routers Chip Architecture Selection by Application Scenario 2.1 Low-Cost IoT and Edge Access 2.2 General Industrial Routing and 5G/Edge Computing 2.3 High-Performance Enterprise and Virtualization Scenarios 2.4 AI-Driven and Intelligent Analytics 2.5 High-Flexibility and Customized Scenarios Application-Oriented Comparison Table Classic Architectures: The Foundation of Industrial Routers 4.1 MIPS 4.2 ARM 4.3 x86 E

Table of Contents Uplink Fundamentals: Definition, History, and Core Role Fiber: The High-Speed Wired Champion Microwave: The Flexible Wireless Bridge Satellite: The Global "Space Courier" Cellular (4G/5G): The Versatile "Hive Empire" 5.1 4G/5G Sub-Variants: From Low-Power to Ultra-High-Speed 5.2 Specialized Frequency Bands: The "Spectrum Key" for Custom Scenarios Technology Comparison: A Multi-Dimensional Overview Hybrid Deployment and Risk Assessment Conclusion: Choose You

Table of Contents The Role of Sensors in Industrial IoT PLCs: The Core Brain of Industrial Automation 2.1 Definition and Functions of PLCs 2.2 Comparison of Leading PLC Manufacturers Modbus Protocol Modbus Gateway vs. Modbus Router: Differences and Functions 4.1 Definitions of Modbus Gateway and Modbus Router 4.2 Functional Comparison 4.3 Why Modbus Gateways/Routers Are Essential Advantages of Wavetel IoT Modbus Gateway/Router Solutions 5.1 Advantages 5.2 Wavetel IoT Modbus G

Industrial IoT projects often use the words modem, M2M router, industrial router, gateway, switch, DTU, and RTU in the same architecture diagram. They are not interchangeable labels, but they are not universal product categories either. One device may combine a cellular modem, IP routing, VPN, serial interfaces, and protocol handling; another may provide only a cellular connection to a host computer.