减少PLC控制系统I/O点的研究与探讨

The Research and Discussion on Reducing I/O Point of PLC Control System

在PLC控制系统设计中,有时会遇到输入、输出点不足的问题。通过合理地设计硬件电路和软件编程。可有效地减少PLC的I/O点占用量,从而降低设备费用,提高设备的性价比。

It can be meeted sometimes the problem of lacked I/O in designing of PLC control system. Occuping quantity of PLC I/O can he reduced effectually by means of designing rationally hardware curcuit and software program, it reduces equipment cost and increases ratio of property price.