Find the format behind the numbers.
Float or integer? ABCD or CDAB? Compare data types and byte orders side by side, then match the result to the device reading.
A Modbus workbench for Windows
Modbus TCP & RTU.
For Windows.
Find devices and registers, make sense of raw values, and trace communication issues. Bring your TCP and RTU devices into one workspace, from the first connection to the final test.
- 01Connect
- 02Find devices
- 03Scan registers
- 04Decode values
- 05Monitor
- 06Test writes
- 07Diagnose
BUILT FOR FIELD WORK
Less guesswork.
More useful readings.
Find devices. Then find their registers.
Scan slave IDs and communication settings to locate devices. Explore register ranges, identify readable blocks and add them to your monitor.
Keep your devices in one workspace.
Manage TCP and RTU connections together. Poll multiple devices and organize points by device, slave and register group.
Read, monitor and write in one place.
Watch values change, edit individual points or write a batch of test parameters. Read them back to verify the result.
Save the setup. Pick up where you left off.
Save connections, devices and register groups as a project. Reopen your workspace without entering every address again.
Trace unexpected values back to the frame.
Inspect requests and responses with MBAP, CRC and PDU details. Use CSV logs and event records to investigate when a problem occurred.
ONE CONNECTED WORKFLOW
Go from an unknown device to a repeatable setup.
- Connect and discover — Locate devices and readable register ranges.
- Decode and monitor — Compare formats and track live values.
- Write and verify — Test parameters and inspect the response.
- Save and investigate — Reuse projects and review communication records.
1 / 6 · Communication monitor
Full size ↗START WITH YOUR DEVICE
Your next debugging session starts here.
Download the desktop app and check it with your hardware before purchasing. Windows 10 / 11 x64. This framework-dependent build requires the compatible .NET Desktop Runtime; Windows will prompt if it is missing.SIMPLE LICENSES
The same toolkit.
A term that fits your work.
All plans include TCP / RTU connections, scanning, monitoring, write tools and project workspaces.Online purchases are coming soon
One payment for the selected license term. No automatic renewal. Prices below are in USD; any applicable tax and the final total are shown before payment.
Download and test the app first. Read the license terms and refund policy before purchasing.
Monthly license
USD9.90
1 month · one-time paymentFor a short project or a round of commissioning.
Annual license
USD59
1 year · one-time paymentFor ongoing development and regular field work.
Lifetime license
USD129
Lifetime · one-time paymentFor your everyday engineering toolkit. Pay once.
For Paddle purchases, Paddle is the merchant of record and handles payment, tax collection and billing support. Refunds & cancellations →
PRODUCT AT A GLANCE
ModbusX, explained.
ModbusX is a desktop Modbus TCP and RTU workbench for Windows. The free online parser helps you inspect existing frames; the desktop app connects to your devices for live work.
- Desktop platform
- Windows 10 / 11 x64
- Current version
- 1.2.0
- Protocols
- Modbus TCP and RTU
- Product support
- ms@utools-kit.com
Frequently asked questions
What is ModbusX?
ModbusX is a Windows desktop workbench for communicating with Modbus TCP and RTU devices. It includes device and register scanning, data-format comparison, live monitoring, write tests and saved project workspaces.
Which systems does the desktop app support?
Version 1.2.0 is a portable, framework-dependent build for Windows 10 and Windows 11 x64. A compatible .NET Desktop Runtime is required. The screenshots show the desktop interface; the downloadable guide is in Chinese.
Is the online Modbus parser free?
Yes. The online frame parser is free and processes pasted RTU, TCP and raw register data in your browser. It does not connect to devices or upload the frames you enter. Use the desktop app for live device connections.
How much do licenses cost?
Monthly licenses are USD 9.90, annual licenses USD 59, and lifetime licenses USD 129. Each is a one-time payment for the selected term, with no automatic renewal. Online purchases are not yet open.
Can I try it with my hardware before purchasing?
Download the desktop app and test compatibility with your device before buying. You can also use the free online parser to inspect an existing frame without installing the desktop app.
Where can I get activation or refund help?
Contact ms@utools-kit.com for product and activation support. For a Paddle order, you can also request billing or refund help through your receipt or paddle.net. Read the full refund policy for eligibility and statutory rights.
HERE TO HELP
Questions before you buy?
Ask about compatibility, activation or an existing order.