IC693PWR321T

详情描述：

IC693PWR321T

IC693PWR321T

IC693PWR321T

随着半导体技术，尤其是微处理器和微型计算机技术的发展，到70年代中期以后，PLC已广泛地使用微处理器作为中央处理器，输入输出模块和外围电路也都采用了中、大规模甚至超大规模的集成电路，这时的PLC已不再是逻辑判断功能，还同时具有数据处理、PID调节和数据通信功能。

可编程控制器是一种数字运算操作的电子系统，专为在工业环境下应用而设计。它采用了可编程序的存储器，用来在其内部存储执行逻辑运算，顺序控制、定时、计算和算术运算等操作的指令，并通过数字式和模拟式的输入输出，控制各种类型的机械或生产过程。PLC是微机技术与传统的继电接触控制技术相结合的产物，它克服了继电接触控制系统中机械触点的接线复杂、可靠性低、功耗高、通用性和灵活性差的缺点，充分利用微处理器的优点。


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