PC-based CNC machine control system with LinuxCNC software

摘要

In the article a PC-based numerical machine control system is presented, communicating over EtherCAT bus with servodrives and auxiliary I/O devices. LinuxRTAI real-time operating system was implemented on the PC controller along with the LinuxCNC control software. EtherCAT software communication module was developed and integrated with LinuxCNC. The software module implements CANOpen (CIA301) application layer standard along with device profiles for servodrives (CIA402) and I/O devices (CIA401). This allows for fast bidirectional communication between the PC controller and servodrives or I/O devices. The CNC control system developed by the authors has simple construction and is very flexible. It can be easily adapted to machines of different configuration.