基于VC 的PC与PLC的通信软件设计

目前PLC已广泛应用于工业控制的各个领域,在现代化建设中发挥了重要作用。在PLC的实际应用中,人们需要对其工作状态进行实时监控,对不符合要求的参数进行及时修改,以提高产品的质量。正是根据这种需求设计了基于VC 的PC与PLC的通信软件。文中介绍了OMRON PLC与计算机之间的通信协议以及通信参数的设置,并用VC 6.0编写的串口通信软件实现了两者之间的通信,并给出了通信软件的设计方法。利用这个软件,人们可以方便直观地对PLC的工作状态进行随时监控。

Design of Serial Communication Software Between PC and PLC Based on VC

Now PLC is widely used in the industry control fields and takes an important part in the modern construction.In the using of the PLC,people need to watch and control its working state and amend the parameters which are not accord with request to improve the quality of products.According to this need,designs the serial communication software between PC and PLC based on VC .Gives a particular introduction about the communication protocols and the communication parameters between PC and OMRON PLC,and the serial communication software based upon Visual C 6.0 is completed to realize the communication between them.The communication principle and software design method are given.Using this software people can watch and control the PLC's working state conveniently and directly.