Free Modbus TCP Client, Scanner & Logger
Download the fastest free Modbus TCP Client and Scanner. The ultimate Modbus TCP Client, Scanner, and Logger in one intuitive interface. Visualize data and debug problems instantly.
By Crabby - Made for Windows
Unlimited Devices
Lightning Speed
Modbus TCP Client & Scanner Features
A complete Modbus TCP Client, Scanner, and Logger with powerful features for industrial automation professionals
Modbus TCP Scanner
Automatically scan your network and discover Modbus TCP devices using industry-standard protocols. Our Modbus scanner provides detailed device information instantly.
- Scan device IDs 1-247
- Configurable timeouts (1-10000ms)
- Extract vendor & product info
Modbus TCP Client
A full-featured Modbus TCP Client that monitors multiple devices simultaneously with configurable polling intervals. Track changes in real-time with visual highlighting.
- Multi-session monitoring
- 100ms to 60s polling intervals
- Pause/resume sessions
Modbus Logger
Powerful Modbus Logger that automatically records register data to files in multiple formats. Perfect for long-term data collection and compliance.
- CSV, JSON, Tab-Delimited formats
- Configurable log rotation policies
- Multiple concurrent loggers
Per-Register Configuration
Advanced per-register settings with scaling, custom units, and multiple data formats for specialized measurements.
- Linear scaling with offset
- 30+ unit presets + custom units
- 8 data format types (Float32, Int32, etc.)
Protocol Logging
Inspect raw Modbus traffic with TX/RX logging. Perfect for debugging and analysis.
- Raw byte inspection
- Hex display with timestamps
- Error tracking
High Performance
Built with Rust for blazing-fast performance and minimal resource usage.
- Rust backend for speed
- Low memory footprint
- Responsive UI
How This Free Modbus Tool Works
Get started in minutes—scan, connect, and diagnose problems instantly
Discover Devices
Run the device scanner to automatically find all Modbus devices on your network. Add them to your device list with custom names.
Start Monitoring
Select a device, configure register type and address range, then start monitoring. Track multiple devices simultaneously.
Analyze & Save
View real-time data, create charts, and save your workspace. Export data for documentation and reporting.
Free Modbus TCP Client Pricing
Download the free Modbus tool now. Full access during development with single license for production use.
Single License
Pricing TBD for v1.0 release
- All current features included
- Unlimited devices & sessions
- Windows 7/8/10/11 (64-bit) support
- Community support
Download the Free Modbus TCP Client Today
Join automation professionals using this free Modbus tool to scan, log, and diagnose problems instantly
Download NowContact Modbus Connect
Have questions or feedback? I'd love to hear from you.
crabby@modbusconnect.com