可编程逻辑控制器，一种数字运算操作的电子系统，专为在工业环境应用而设计的。它采用一类可编程的存储器，用于其内部存储程序，执行逻辑运算，顺序控制，定时，计数与算术操作等面向用户的指令，并通过数字或模拟式输入/输出控制各种类型的机械或生产过程。是工业控制的核心部分。 -Programmable logic controller, a digital computing operation of electronic systems, designed for applications in industrial environment designed. It uses a class of programmable memory for its internal storage procedures, logical, sequential control, timing, counting and arithmetic operations such as user-oriented instructions, and, through digital or analog input/output control various types of machinery or production processes. Is the core of industrial control.