AI810模拟输入模块

AI810 模拟输入模块

支持的plc有S7-300,S7-400,S7-1500,S7-1200；西门子SIMATIC系列PLC，诞生于1958年，经历了C3,S3,S5,S7系列，已成为应用非常广泛的可编程控制器。一般当电机与变频器距离超过50m时，应在它们中间串入电抗器、滤波器或采用屏蔽防护电缆[1]。 　　工作原理编辑当PLC投入运行后，其工作过程一般分为三个阶段，即输入采样、用户程序执行和输出刷新三个阶段。一．PLC采用“顺序扫描，不断循环”的工作方式·强制模式与多值计算模式1）处理单元(CPU)是PLC的控制。给定信号连接到模拟量输入端，计算机启动、停止信号连接到数字输入端，手/自动控制转换连接到数字输入端，手动和自动由SA1选择。当PLC的用户程序要保留在RAM中时，就会用到电池，电池通常是3V或3.6V的不可充电的锂电池，电池的使用寿命通常是五年左右，电池用久了，电压就会下降，当其下降到不足以RAM中数据时，RAM中的程序就会丢失。

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