🔌 Modbus Protocol Explained with WinCC OA SCADA | Full Demo with Test Simulator 🔌

In this hands-on tutorial, I explain the Modbus communication protocol from the ground up and demonstrate how to connect a WinCC OA SCADA system to a Modbus test simulator using Modbus TCP/IP.

🎓 What You’ll Learn:
✔️ What is Modbus and how it works
✔️ Modbus memory/register types:
  - Coils (0xxxx)
  - Discrete Inputs (1xxxx)
  - Input Registers (3xxxx)
  - Holding Registers (4xxxx)
✔️ Function Codes (01, 03, 06, 16, etc.)
✔️ 0-based vs 1-based addressing
✔️ How to configure Modbus driver in WinCC OA
✔️ Connect to a simulator and view real-time data
✔️ Create a live SCADA interface in GEDI

📦 Tools used:

WinCC OA SCADA

Modbus Simulator (e.g., Mod_RSsim)

GEDI for UI design

📌 Perfect for automation engineers, students, and professionals working on PLC/SCADA systems.

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📩 Drop a comment for tutorials on IEC 104, OPC UA, or DNP3 next!

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#EfficiencyImprovement
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