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关于程序控制器和计算机的差别,可以简单地加以概括。程序控制器利用输入0或1信号并由程序控制的逻辑电路,这种程序基于比较简单的关系,例如“与”“或”和“非”指令以及计时器等。程序设计的基础可以是逻辑符号或简单的程序控制器“语言”。这使程序控制器很容易用于联锁装置,
The difference between a program controller and a computer can be simply summed up. The program controller takes advantage of logic programmed into a 0 or 1 signal and controlled by a program based on relatively simple relationships such as AND and OR and NOT instructions and timers. Programming can be based on logical notation or simple “language” of the programmer. This makes the program controller easy to use for interlocks,