介绍了Mitsubishi 的A 系列PLC 与上位计算机的串行通信程序设计方法,讨论了在程序设计中需要注意的问题,并给出部分采用VB6.0 实现的串行通信程序。关键词:串行通信;可编程控制器Abstract: The program method of serial communication between Mitsubishi A series PLCand host computer is introduced in this paper. The problems caused during the program design ave been discussed. The part of communication program with VB6.0 is presented.Keywords: serial communication;PLC
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