用软件编程实现PLC输入点的扩展
发布时间：2018-07-14 20:47
【摘要】：PLC技术在工业现场被广泛使用,但是PLC系统设计定型后输入输出点相对固定,在现场实际应用中有时会出现扩展受限等情况,不足以满足实际的扩展需求。文章介绍了一种在PLC输入点不足的情况下,通过软件编程和硬件连接来实现PLC输入点扩展的方法,并且在西门子S7-200 PLC上试验成功。
[Abstract]:The PLC technology is widely used in the industrial field, but the input and output points are relatively fixed after the design of the PLC system is finalized, and sometimes the expansion is limited in the field application, which is not enough to meet the actual expansion requirements. This paper introduces a method of PLC input point expansion through software programming and hardware connection under the condition of insufficient input point of PLC, and it is successfully tested on Siemens S7-200 PLC.
【作者单位】： 包头钢铁职业技术学院自动化系;
【分类号】：TP273
本文编号：2122903
[Abstract]:The PLC technology is widely used in the industrial field, but the input and output points are relatively fixed after the design of the PLC system is finalized, and sometimes the expansion is limited in the field application, which is not enough to meet the actual expansion requirements. This paper introduces a method of PLC input point expansion through software programming and hardware connection under the condition of insufficient input point of PLC, and it is successfully tested on Siemens S7-200 PLC.
【作者单位】： 包头钢铁职业技术学院自动化系;
【分类号】：TP273
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，本文编号：2122903
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