UV5627B-E

编程软件的多样化和***化、标准化：采用多种编程语言，有面向顺序控制的步进顺序语言和面向过程控制系统的流程图语言，后者是一种面向功能块的语言，能够表示过程中动态变量与信号的相互联结；还有与计算机兼容的***语言，如BASIC、C及汇编语言；另外还有专用的***语言，例如三菱的MELSAP采用编译的方法将语句变为梯形图程序；也有采用布尔逻辑语言的，CPU能直接执行AND、OR、XOR、NOT操作，这种语言执行速度很快，但不很直观。PLC也将具有数据库，并可实现整个网络的数据库共享，还将不断发展自适应控制和***系统。

 

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