[ Your Mac (Modbus Master) ] │ ├─── (Ethernet / Port 502) ────► [ Modbus TCP Slave / PLC ] │ └─── (USB-to-RS485 Adapter) ──► [ Modbus RTU Slave / Sensor ] QModMaster download | SourceForge.net
If you are looking for a reliable way to run to communicate with Modbus RTU (serial) or Modbus TCP (Ethernet) slaves, this guide covers the best methods, alternatives, and troubleshooting tips. What is QModMaster?
If you prefer not to compile software, you can use these Mac-native alternatives: Modbus Poll : A professional, paid tool with a native Mac version. Modbus Tool : A simpler utility often available through the Mac App Store Wine/Crossover : You can attempt to run the Windows version of QModMaster using compatibility layers like settings once you have the app running? QModMaster download | SourceForge.net
Requires Qt4 and GCC to be installed on your system. Method 2: Running QModMaster on Mac via Wine/Bottles qmodmaster mac
QModMaster is an open-source Qt-based GUI application for communicating with and testing Modbus slaves and masters. It supports Modbus RTU (serial) and Modbus TCP (network) protocols, providing tools to read/write registers/coils, monitor traffic, and script basic test sequences. The mac build typically runs as a native Qt application or via homebrew/compiled binaries.
QModMaster on Mac: A Complete Guide to Modbus Monitoring on macOS
Check GitHub releases for a pre-built macOS binary (look for .app files). [ Your Mac (Modbus Master) ] │ ├───
Several developers have launched native Swift-based Modbus scanners on the Mac App Store. These tools inherently support Apple Silicon, strictly adhere to macOS sandbox security protocols, and instantly recognize USB-to-Serial adapters without Terminal workarounds. 2. Baseblock Modbus Master
Because QmodMaster is a native app, you can automate it using AppleScript. For example, to start a specific polling sequence every hour:
: If you don’t have Homebrew, install it first. Then install the Qt toolkit and libmodbus: brew install qt@6 libmodbus Use code with caution. Modbus Tool : A simpler utility often available
Download the portable, pre-compiled Windows zip file ( qModMaster-Win64-exe ) from the QModMaster Download Page . Install Wineskin Winery or use CrossOver Mac.
QModMaster is not officially distributed as a .dmg or through the Mac App Store. You have two main options:
: Interprets Modbus register values as Decimal, Unsigned, Float32, Hexadecimal, Binary, Octal, and ASCII.
Look for a device named something like /dev/tty.usbserial-XXXX or /dev/tty.wchusbserialXXXX .