这是我编写的PLC程序，用于4层电梯的PLC控制，我好不容易编的，请大家多多指教．-prepared by the PLC program for the four-storey elevator PLC control, I finally series, Please exhibitions.

一个利用PLC编写的工业控制源程序，包括梯形图和组态，很完整，是三层电梯的程序，可以扩展成多层电梯-Prepared using an industrial control PLC source code, including the ladder and configuration, it is complete, is a three-lift procedure can be extended into a multi-elevator

一种plc控制的四层电梯的设计方案，主要程序部分-a kind of four-layer elevator program by plc