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介绍了用VC++和VB联合开发针对I/O测控卡的软构件(Active X)的制作方法,从而实现了工控机对I/O模块进行读写、定时采样和异常事件实时触发等功能,为对新I/O模块接入原系统,提供了一种开发I/O驱动软件的方法.
This paper introduces how to develop the Active X for I / O monitoring and control card by VC + + and VB, and realizes the functions such as reading and writing I / O modules, timing sampling and real-time triggering of abnormal events for IPC. Access to the original system for new I / O modules provides a way to develop I / O driver software.