tell application "QmodMaster" to activate delay 1 tell application "System Events" keystroke "o" using command down -- Open connection delay 0.5 keystroke return end tell
QModMaster supports both Modbus RTU (via serial ports RS-232/RS-485) and Modbus TCP (via Ethernet). This versatility makes it suitable for a wide range of industrial scenarios, from legacy serial-based equipment to modern networked devices.
# Locate your Qt installation brew list qt@5 # Fix the rpath manually install_name_tool -add_rpath /usr/local/opt/qt@5/lib /path/to/QmodMaster
(Note: The MacPorts formula may be outdated; compilation from source is safer.) qmodmaster mac
This comprehensive guide covers everything from the core features of QModMaster to step-by-step instructions for running it on macOS, along with native alternatives. What is QModMaster?
For most automation engineers who just need the tool to work without fiddling with compilers, running the Windows version via virtualization is the best method.
Select Modbus RTU , choose the COM port (represented in Mac as /dev/tty.usbserial-... ), and set baud rate, parity, and stop bits. tell application "QmodMaster" to activate delay 1 tell
Built using the Qt framework, making it theoretically compatible with Windows, Linux, and macOS. The macOS Challenge: Why It Is Hard to Find
QModMaster does not have an official pre-compiled DMG or installer for macOS (it primarily supports Windows and Linux), you can still get it running on your Mac by building it from source using the Qt framework Prerequisites
If you prefer a native application that doesn't require manual compilation, consider these alternatives: What is QModMaster
Modbus is the undisputed backbone of industrial automation. Whether you are programming a Programmable Logic Controller (PLC), configuring a variable frequency drive (VFD), or testing an industrial sensor, you need a reliable Modbus master simulation tool to verify your registers.
If you work with industrial automation, PLCs, or SCADA systems, you are likely familiar with . It is one of the most popular, free, open-source Modbus TCP and RTU clients available for testing and debugging slave devices.
Built on Qt , which allows it to run natively on macOS, Windows, and Linux.
For users with Intel-based Macs or those running Apple Silicon (M1/M2/M3) with Rosetta 2, you can wrap the Windows pre-compiled binary inside a lightweight translation layer.
