摘要
对PLC扩大I/O有效点数的程序设计原则进行了讨论 ,并据此分析评价了若干扩展程序与电路 ,进而提出了更为优化实用的扩展方法与具体程序。
The principles of program design for the expansion of effective number of I/Os of PLCs are discussed in this paper. With these points of view, some kinds of expanding programs and related circuits are analyzed and evacuated, and further, several more optimized and relevant methods and special programs for I/O expanding are presented.
出处
《武汉工业学院学报》
CAS
2003年第1期25-28,共4页
Journal of Wuhan Polytechnic University
关键词
可编程控制器
I/O有效点数扩展
Programmable Controllers
expansion of effective number of I/Os
