ModbusExplorer – Tool for Modbus TCP
Read and change device values – independent of any plant software.
ModbusExplorer is a free Modbus TCP test tool for Windows, Linux (including Raspberry Pi) and macOS: it reads and changes the values of a Modbus device independently of any existing plant software – with ready-made profiles for energy meters, inverters, storage systems and charging stations. The program is free of charge, provided “as is”.
Download on modbus.de (German site)
Commission Modbus devices without waiting for the plant software
When commissioning Modbus devices it is very useful to read and change the values of a device independently of any existing software. That is what ModbusExplorer is built for: a Modbus client that can read and write Modbus registers before the control system or energy management is connected.
The program works with profiles created for the respective Modbus server: a profile describes the registers of a device type, and ModbusExplorer then shows the values with name and unit.
Features
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Read and write values
Read and change the registers of a Modbus TCP device – independently of the plant software.
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Profiles per device type
Ready-made profiles are included, the list keeps growing; we create further profiles on request.
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SunSpec
Since August 2025 the first SunSpec models are supported (simple models).
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REST API
Since October 2025 a REST API allows reading and writing Modbus values from other programs.
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CSV export
All Modbus values can be saved to CSV files – cyclically as well, via refresh.
Included profiles
As of November 2025, profiles for these devices are included (manufacturer and product names are trademarks of their owners and only describe what a profile is meant for):
| Area | Devices |
|---|---|
| Energy meters | Phoenix EEM-DM357-70, Schneider EasyLogic PM2200, Siemens SENTRON PAC1200 / PAC2200 / PAC3200 (Basic), Janitza UMG96RM-E, UM800, UM801 |
| Inverters, storage, data loggers | Huawei SmartLogger3000 and SUN2000, INTILION scalestac v2.5, SMA Data Manager M and Sunny Island, SolarEdge Standard ESS, blue’Log XC, TRUMPF TruConvert AC 3025, Victron CCGX, Danfoss IC7 DC-DC Converter, SunSpec (simple models) |
| Others | MeanWell DRS-480-24, Mennekes ECU, Viessmann 300-F, Daheim Lader |
Download for Windows, Linux and macOS
ModbusExplorer is available as a ZIP per platform on modbus.de: Windows 64-bit and Windows ARM 64-bit, Linux 64-bit, Linux ARM 32-bit (Raspberry Pi) and ARM 64-bit (newer Raspberry Pi), macOS ARM 64-bit and macOS 64-bit. The macOS build is marked experimental; before the first start run xattr -cr ModbusExplorer.app in the terminal.
System requirements
- Platform
- Windows (x64, ARM64), Linux (x64, ARM 32/64-bit, Raspberry Pi), macOS (x64, ARM64; experimental)
- Protocol
- Modbus TCP
- Delivery
- ZIP per platform, download on modbus.de (German site)
- Price
- free of charge, provided “as is”
Limits, honestly
- Provided “as is”: no warranty is given for its function.
- The macOS build is experimental; run
xattr -cr ModbusExplorer.appin the terminal before the first start. - Profiles exist for the devices listed above; we create further ones on request.
Frequently asked questions
How much does ModbusExplorer cost?
Nothing. The program is provided free of charge and is meant to be used “as is”; no warranty is given for its function.
Does ModbusExplorer run on a Raspberry Pi?
Yes. There are packages for Linux ARM 32-bit (Raspberry Pi) and ARM 64-bit (newer Raspberry Pi), plus Linux x64, Windows x64 and ARM64, and macOS.
My device has no profile – what now?
Further profiles are created on request. Tell us which device you want to connect; we welcome bug reports, suggestions and requests for extensions.
Related products
Modbus is a registered trademark of Schneider Electric USA, Inc. The manufacturer and product names in the profile list (including Siemens, Schneider Electric, Phoenix Contact, Janitza, Huawei, SMA, SolarEdge, Victron, TRUMPF, Danfoss, Mennekes, Viessmann, MeanWell, INTILION, SunSpec) are trademarks of their respective owners. They are named only to describe the included profiles; ModbusExplorer is an independent product and not affiliated with any of these manufacturers. Windows is a trademark of the Microsoft group of companies, macOS a trademark of Apple Inc., Linux a registered trademark of Linus Torvalds, Raspberry Pi a trademark of Raspberry Pi Ltd.
Contact
Interested in ModbusExplorer?
Tell us what you would like to use the product for – we will get back to you personally.