基于西门子PLC的群控电梯的研究与实现

Research and Development of Elevator Group Control System Based on Siemens PLC

中文关键词:  群控电梯  数学模型  PPI协议  消息帧  程序算法

英文关键词:elevator group control system  mathematical model  PPI protocol  message frame  program algorithm

中文摘要:

      基于三部六层群控电梯模型，首先建立了群控决策的数学模型，然后详细阐述了基于PPI网络的自定义的消息帧的内容格式和相关规范，规划了4台PLC的通信缓冲区地址，最后给出了主站和从站的软件实现算法。

英文摘要:

      Based on the three elevators with six floors，firstly,a mathematical model is built up about the control system.Secondly,the message frame is defined,the relevant specification of it is expounded,the communication area is planned,and the program algorithm of the system is given at the end.