View Modbus registers from Modbus Slaves using the Modbus RTU serial port and TCP/IP network protocols. The functions 0x01 Read Coils, 0x02 Discrete Inputs, 0x03 Holding Registers, 0x04 Input Registers and 0x07 Exception Status are predefined. However, you can send any function code.

The values are shown in decimal, hexadecimal, float and binary. Further, a graph and a colored percentage are shown.

Write a new decimal, hexadecimal or float value by double-clicking on the value.

If the device supports the 43 / 14 (0x2B / 0x0E) Read Device Identification command, the vendor / name / revision is shown.



The Modbus Master shows each value in a graph. So you can see the history from each register. Further, you can set an Alias for each register by a double click on the Alias column.



Modbus RTU (RS485) serial port (use any USB-to-RS485 Converter) and Modbus TCP/IP network protocol are supported.


Auto Detect

Press the magnifying glass to search / discover all devices and their Modbus address. All found devices are shown in a dialog.
Version 1.25 · 329kb · VirusTotal Report
New: Minor improvements History
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Install using winget:

winget install --id=the-sz.Medford -e --forcecontent_copy

Supported Languages:

English English
German German
Greek Greek
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Command line options:

/l <language code> Change user interface language to specified 2 letter language code

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