v0.4.1

• Fixed a bug that prevented log files from being created
• Added the --logdir parameter to modbusua.exe, which specifies the directory for log files
• The modbusuaservice.bat script has been renamed to modbusuas.bat.
  Added script parameters that allow you to start/stop a service with a specified name,
  as well as set command-line parameters for the service (see modbusuas.bat --help)
• Added statistics for the port object: Stat.State and Stat.StateEnablePort (see documentation)
• Added the SinceTimestamp statistic (the time when statistics began) for Port/Device
• Fixed DateTime issues
• Fixed service mode definition for Unix
• Added the changelog.md file to the installer's doc folder for Windows
• Updated ModbusLib version to 0.4.9
• Updated documentation

v0.4.0

Overview

modbusua Gateway is a cross‑platform (Windows, Linux) I/O server that bridges data
between the Modbus protocol and OPC UA (Open Platform Communications Unified Architecture).
It is implemented in C++ as an open‑source server and can run as a console application
or a background service/daemon.

Key Features

• Modern C++ implementation (C++17 and above)
• Cross‑platform support (Windows, Linux)
• Configuration via a plain CONF/INI file
• Logging to file with rotation and to the OS system log (Windows/Linux)
• Runs as a console app or Windows service/Linux daemon
• Multithreaded architecture for performance
• Modular design for easy extensibility
• Built‑in OPC UA server with configurable address space
• Modbus TCP/RTU/ASCII support for a wide range of devices
• Connection parameters, timeouts, retries configurable via the config file
• Hot configuration reload without stopping the server
• Support for common data types (bits, integers, floating‑point)
• Scalable to many devices and tags
• Built‑in diagnostics and monitoring of server and connections
• Robust error handling and reconnection logic
• Easy integration with existing SCADA systems and other upper‑level software