【摘要】 介绍了一种利用FX系列PLC的编程口,实现PC与PLC的通信的方法,着重介绍了FX编程口通信的通信协议、通信命令、通信传输的数据帧格式、PLC元件查询地址的编址、校验和的计算,并利用Windows环境下的开发软件VB6.0编写通信程序。更多还原

【Abstract】 This paper introduces the communication between PC and PLC by using FX-series PLC programme port,and introduces the communication protocol,the communication demand,the data data frames format of communication transmission,the ac- cessing address code of PLC element, the calculation of check sum.The communication program based on VB6.0 develop- ment software under the Windows environment.更多还原