FieldBus Toolkit

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Everyone
10+
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About this app

FieldBus Toolkit is the essential utility for embedded engineers and PLC programmers.
Debug Modbus TCP, MQTT, HTTP, and socket communications directly from your mobile device.

[Key Features]
1. Multi-Protocol Support
- Modbus TCP Client
- MQTT Client (Publish/Subscribe)
- HTTP REST Client (GET, POST, PUT, DELETE)
- TCP/UDP Client & Server (Echo/Broadcast)

2. Data Visualization
- Send and receive data in ASCII or HEX format.
- Real-time communication logs.

3. Efficiency Tools
- Save frequently used commands as Macros for quick access.
- One-touch data transmission.

4. Developer Friendly
- Perfect for testing Arduino, ESP32, Raspberry Pi, and industrial PLCs.
Industrial Network Debugger: Modbus TCP, MQTT, HTTP, TCP & UDP.
Updated on
Jul 23, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Financial info and App info and performance
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

• Updated the internal billing library to the latest version.
Content rating
Everyone
In-App Purchases
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About the developer
이동수
dreamsoftware52@gmail.com
성호로15안길 3 501호 상록구, 안산시, 경기도 15312 South Korea

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