PLC对电梯常见故障的检测和显示

提出一个充分利用原有硬件资源和 Ｐ Ｌ Ｃ 功能的方案，实现了用 Ｐ Ｌ Ｃ 对电梯常见故障的检测和显示；方案实施后取得满意效果。并强调该方案完全适用于任何用 Ｐ Ｌ Ｃ 控制的系统。

new plan that markes use of present hardware and PLC's function has been proposed in this paper , and it is realized to monitor and display the failure appearing commonly in the elevator using PLC After being put into practice, these measures have brought about the desised effect . This paper places emphasis on that this plan holds in any system controlled by PLC .