Analog vs Digital vs 4-20mA vs Modbus | Industrial Signals Explained for Beginners!

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In this video, we break down the Types of Signals used in instrumentation and control, including Analog, Digital, 4-20mA, and Modbus. Understanding these signals is crucial for industrial automation, PLCs, SCADA systems, and sensor communication.

🚀 Topics Covered:
✅ Analog Signals – Continuous signals for precise measurements (e.g., temperature, pressure transmitters).
✅ Digital Signals – ON/OFF signals for reliable switching (e.g., proximity sensors, push buttons).
✅ 4-20mA Signals – Standard current loop for long-distance transmission with minimal noise.
✅ Modbus Communication – Serial & TCP/IP protocol for multi-device industrial networks.

🔍 Which Signal Should You Use?
📌 Analog – When high resolution is required but short distance is acceptable.
📌 Digital – For simple, noise-resistant ON/OFF control.
📌 4-20mA – For long-distance analog signal transmission with high accuracy.
📌 Modbus – For networked communication across multiple industrial devices.

💡 Whether you're an engineer, technician, or automation enthusiast, this video will help you understand these signals in a practical and easy-to-learn way!

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