ModbusBB

ModbusBB is a professional Modbus Master/Client application for Windows, designed for engineers who need to test, debug, and monitor Modbus slave devices quickly and reliably.

Supports both Modbus TCP/IP and Modbus RTU serial protocols with full configuration options for any industrial device. All standard function codes FC01 through FC16 are supported including Read Coils, Read Discrete Inputs, Read Holding Registers, Read Input Registers, Write Single Coil, Write Single Register, and Write Multiple Registers.

Key features:
- Auto-polling with configurable intervals from 100ms to 10 seconds
- Complete communication log with request/response details and CSV export
- Device scanner to discover slave IDs and valid register ranges
- Watchdog alerts when values change or exceed thresholds
- Connection profiles to save and switch between device configurations
- Data logging to CSV with timestamps for trend analysis in Excel
- Modern GUI and command-line (CLI) interface for auto

Features

Modbus TCP/IP, Modbus RTU, FC01-FC16, Auto-polling, CSV data logging, Device scanner, Watchdog alerts, Connection profiles, GUI interface, Command-line CLI, Multiple data formats, Hex Decimal Binary Float32, RS485, Works offline, Windows 10 Windows 11

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License

Other License

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Additional Project Details

Operating Systems

Windows

Intended Audience

Engineering

User Interface

.NET/Mono

Programming Language

ASP.NET

Related Categories

ASP.NET Network Monitoring Software, ASP.NET SCADA Software

Registered

2026-03-28

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