摘要
在设计PLC控制系统时 ,经常会遇到输入 /输出点不足的问题。本文介绍在实际工作中 ,通过改进接线和编程相结合的方法 ,给出了解决输入 /输出点不足的几种有效方法。
The problems about the limited numbers of input or output are encountered frequently in the design of PLC control system. In this article, some schemes to solve the limited numbers of input or output were presented by use of combination of the improvement of connecting wire and programming.
出处
《低压电器》
北大核心
2000年第2期39-41,共3页
Low Voltage Apparatus
