Study on ARM-Based Embedded NC System

At present, study on open numerical control (NC) system is increasingly getting attention. Most of these studies concentrated their aims at realizing the open system structure based on PC or IPC (industrial personal computer). Few involved the category of embedded NC (ENC) system, but expectant goals could not be achieved at the performance of real time (RT) and reliability of system response. In this paper, a new ENC system based on ARM and programmable multiple axes controller (PMAC) is presented. ENC system, which enhanced performance and reduced cost, was chosen to replace traditional IPC one. Wherein ARM processor was chosen as master CPU, meanwhile PMAC2 was chosen as slave CPU, TCP/IP protocols was solidified with W3100A, and ¿_c Linux was chosen as operating system (OS). The system was proved to be good at dealing with multiple tasks processing, RT and reliability of motion control. In future, ENC system may be expected to be a kind of important structure of open computer integrated machining system (CIMS).