求翻译：摘 要：本文介绍了基于西门子S7-300可编程控制器、STEP7和WinCC flexible组态软件的电梯控制 系统。阐述了电梯控制系统的组成及PLC、STEP7和WinCC flexible的程序设计方法。PLC执 行可靠有效地分散控制及采集现场数据，WinCC flexible组态软件制作人机对话界面，进行系 统的监控和。该控制系统可以实现上位PC对实际电梯控制系统运行的实时监控，也 可以在脱离实际物理的控制对象情况下，实现对控制程序的调试和运行。是什么意思？

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Abstract: This document describes based on Siemens S7-300 programmable controller, and WINCC STEP7 flexible configuration software for elevator control system. Describes the composition of elevator control systems and PLC, and flexible in the WINCC STEP7 design approaches. Plc receipt line reliable

Abstract: This article introduced based on Simens the S7-300 programmable controller, STEP7 and WinCC the flexible configuration software elevator control system.Elaborated the elevator control system composition and PLC, STEP7 and the WinCC flexible programming method.PLC carries out effectively di

Abstract: this paper introduces is based on Siemens plc, STEP7, WinCC flexible configuration software of the elevator control system. Describes the components of the elevator control system and PLC programming method, STEP7, WinCC flexible. PLC reliable distributed control and effectively collect fi

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