OVATIONEMERSON 5X00499G01MAU远程通讯卡 艾默生模块/卡件

OVATIONEMERSON 5X00499G01MAU远程通讯卡 艾默生模块/卡件

控制系统需要建立信号的输入和输出通道，这就是I/O,DCS中的I/O一般是模块化的，一个I/O模块上有一个或多个I/O通道，用来连接传感器和执行器（调节阀）。常用的I/O信号一般分为：AI、PI、AO、DI和DO

AI－－模拟量输入信号
PI－－脉冲量输入信号AO－－模拟量输出信号DI－－数字量输入信号DO－－数字量输出信号

The control system needs to establish the input and output channels of the signal, which is I/O, I/O in DCS is generally modular, an I/O module has one or more I/O channels, used to connect the sensor and the actuator (regulator). Commonly used I/O signals are generally divided into: AI, PI, AO, DI and DO

AI- analog input signal

PI- pulse volume input signal

AO- analog output signal

DI- digital input signal

DO- digital output signal