适用于PDA的PLC编程系统开发

Development of Programming System for PLC Running in PDA

传统上调试PLC通常采用手持式PLC编程器,且只能适用于相应型号的PLC,上位计算机上的编程软件无法适用于现场实时调试、编辑程序.本系统在分析PLC编程器和编程软件的功能上,通过系统分析,设计出适合PDA的模块.它采用PDA作上位机,嵌入式VB为开发工具,开发出相应的微型GUI和上层应用软件.该系统可用PDA代替原有的手持式PLC编程器,具有初始化内存、编辑调试程序、监视PLC运行等功能.其既具有PLC编程器的灵活方便的优点,又具有上位计算机易于编程、方便调试且应用范围广的优点.

Traditionally,the Programming Console is used to debug PLC,but it can only be used for the corresponding CPU Unit.Similarly,it is not adapt to debug and edit the program for real time operation using PLC program system on host computer.For the above reason,a new system was designed and invented based on the function in the Programming Console and PLC program system.In the system,PDA was used as host computer,Embedded Visual Basic as a developing tool,on the side,the relevant interface drivers,micro GUI and appliance software were also developed.The system can substitute PDA for the Programming Console.It could test and debug PLC,including initializing memory,checking and modifying the user programs,adn monitoring programs in different display modes.In conclusion,the system has the advantages of flexibility of the Programming Console,and conveniences for debugging and editing the program of host computer together with wide application.