Wiznet makers

WIZ750SR Serial-to-Ethernet Converter for Remote Industrial Control

Many industrial and legacy devices still rely on RS-232 or RS-485 serial communication. However, modern industrial control systems often require remote access over TCP/IP networks. This project demonstrates how the WIZnet WIZ750SR serial-to-Ethernet module enables long-distance control of serial devices via the internet.

🚀 With WIZ750SR, serial devices can be accessed from anywhere, eliminating the need for a local PC or dedicated controller.

🛠 Project Overview

• MCU Used: WIZ750SR (ARM Cortex-M0-based SoC)
• Networking Modules: WIZnet W7500 (Ethernet controller inside WIZ750SR)
• Software & Protocols: Modbus RTU/TCP, Ignition SCADA, ACM OPC Server
• Purpose: Convert serial devices into internet-accessible devices
• Main Use Cases: Remote Industrial Monitoring, SCADA Integration, IoT-Based Automation

📌 Why WIZ750SR? Key Advantages

🔹 Seamless Serial-to-Ethernet Conversion
The WIZ750SR module acts as a transparent bridge between serial devices (RS-232/RS-485) and Ethernet networks, allowing legacy devices to be controlled remotely over TCP/IP.

🔹 Plug-and-Play Configuration

• Quick setup via WIZnet Configuration Tool
• Supports DHCP or static IP assignment
• Web-based or serial-based configuration options

🔹 Industrial Compatibility

• Supports Modbus RTU over TCP/IP, allowing SCADA systems to control serial devices over Ethernet
• Works with industrial remote I/O modules, enabling long-range sensor/actuator control

🔹 Secure, Reliable Connectivity

• Uses dedicated hardware for TCP/IP processing → Low CPU load
• Stable Ethernet connectivity → No risk of WiFi disconnection or signal interference

📌 System Architecture: WIZ750SR for Remote Serial Communication

🔗 How It Works

1️⃣ Serial Device (RS-232/RS-485) Connected to WIZ750SR
2️⃣ WIZ750SR Converts Serial Data to TCP/IP Packets
3️⃣ SCADA or Remote System Sends Modbus TCP Commands
4️⃣ WIZ750SR Translates TCP Data Back to Serial Commands
5️⃣ Legacy Device Operates as if Locally Connected

Traditional Serial Communication (Limited Range)

WIZ750SR-Based Remote Access (Unlimited Range)

🔹 The Result? Effortless remote monitoring & control for industrial devices!

📌 Development Process & Key Challenges

🔧 Hardware & Software Integration

• Configured WIZ750SR via WIZnet Config Tool
• Set up Modbus RTU over TCP for SCADA compatibility
• Integrated OPC server for multi-device management

🔐 Security & Reliability

• Firewall rules & VPN integration for secure access
• Automatic reconnection features to prevent data loss
• Low-latency TCP communication for real-time monitoring

⚡ Industrial Use Cases

✅ SCADA Systems: Remote industrial automation
✅ Smart Infrastructure: Monitor legacy devices via TCP/IP
✅ Energy Monitoring: Smart grid and power distribution control
✅ Factory Automation: Extend serial device usability over Ethernet

📌 Performance Benefits: WIZ750SR vs. Alternative Solutions

🎯 With WIZ750SR, you get a stable, low-latency solution for remote serial communication!

📌 Conclusion & Future Development

🔹 WIZ750SR makes remote serial communication fast, easy, and reliable
🔹 Enables industrial devices to be controlled via standard Ethernet networks
🔹 Ideal for SCADA, industrial automation, and IoT applications

Future Enhancements

✅ Adding MQTT support for cloud-based automation
✅ Implementing secure tunneling (TLS/SSL) for encrypted serial transmission
✅ Expanding Modbus & BACnet compatibility for broader industrial use

🚀 Upgrade your serial devices with WIZ750SR and take your automation system online!