| PLC设计中节省输入／输出点的方法 |
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| 引用本文： | 刘美侠. PLC设计中节省输入／输出点的方法[J]. 中国制造业信息化, 2006, 35(12): 49-51,58 |
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| 作者姓名： | 刘美侠 |
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| 作者单位： | 宿迁学院机电工程系,江苏宿迁223800 |
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| 摘 要： | PLC在实际应用中经常会遇到这样的问题：一是PLC的I／O的点数不够，需要扩展，然而增加I／O点数将提高成本；二是已选定的PLC可扩展的I／O点数有限，无法再增加。因此。在满足系统控制要求的前提下，合理使用I／O点数，尽量减少所需的I／O点数具有重要的现实意义。通过对一些PLC应用实例进行分析，介绍了几种节省PLC输入／输出点的设计方法。
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| 关 键 词： | PLC 输入点 输出点 节省 方法 |
| 文章编号： | 1672-1616（2006）23-0049-03 |
| 收稿时间： | 2006-08-30 |
| 修稿时间： | 2006-08-30 |
Several Methods of Saving Input and Output Points in PLC Design |
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| LIU Mei - xia. Several Methods of Saving Input and Output Points in PLC Design[J]. Manufacture Information Engineering of China, 2006, 35(12): 49-51,58 |
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| Authors: | LIU Mei - xia |
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| Affiliation: | Suqian College, Jiangsu Suqian, 223800, China |
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| Abstract: | There is a normal question in the PLC practical application, the PLC I/O points are insufficient to meet requirement. The solusiton for this to increase I/O points will enhance the cost, sometimes the I/O points in the designated PLC are limited to enhance. In order to satisfy the control systems request, it is necessary to use I/O points reasonably and as far as possible to reduce I/O points which needs to has the vital practical significance. By some PLC application examples, it presents several kinds of design methods for saving the PLC input/output points. |
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| Keywords: | PLC Input Points Output Points Savings Methods |
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