Software development of file reading and writing function of CNC system based on OtoStudio
                                                      HU Chunxiao, MEI Zhiqian, LI Xiangguo
                     (College of Mechanical and Electrical Engineering, HoHai University, Changzhou 213022, China)

Abstract: Aiming at the problems existed in the traditional numerical control software, such as lack of good portability and scalability, programming inefficiency etc, a study on the filing reading and writing module of servo pressure CNC system was carried on. Based on IEC611313 industrial control standard, a program design method was proposed to design the function of file reading and writing for the servo pressure CNC system. On the basis of the analysis about the content format of the reading and writing files, OtoStudio software adopted as the development platform, filing reading and writing module was programmed by employing structural text programming language and modular design method, a file reading and writing software was developed. The test of file reading and writing worked out on the servo pressure hardware platform. The results indicate that the file reading and writing module programmed based on OtoStudio is achieved successfully to realize the process file reading and writing, while the execution correct results and fast speed are attained. The program design based on modular design is simple, extensible, and portable with high practical application value.

Key words: file reading and writing; modular design; CNC system