Research and Development of a Cross-platform CNC Kernel forThe demand for cross-platform solutions for real-time control systems is determined by the necessity to reduce the development cycle time, to provide broad opportunities of configuring the CNC system for multi-axis machine tools and to simplify the implementation of application solutions for shop floor. The paper proposes an approach of building a portable CNC kernel based on platform independent libraries. Open architecture CNC system offers levels of abstraction in the kernel for implementing various HMIs, accepting different part program language versions and using different fieldbuses. An example of adapting cross-platform CNC kernel for multi-channel and multi-axis machine tool is illustrated. Multi-axis Machine Tool ☆