H4135A 992413560  数字输入输出模块

【功能描述】

H4135A 992413560数字量输入输出信号就是开关量信号，1或者0，模拟量信号，有2种，电压或者电流信号，一般是变送器传过来的信号，比如用压力变送器检测水管压力，它会输出一个模拟信号4--20ma或者0-10V的信号给PLC，PLC来进行数据处理。

开关量输入点(DI),处理开关量输入信号.模拟量输入点(AI),处理模拟量输入信号(0-20mADC,0-5VDC).电阻信号(含热电阻)输入点,处理热电阻或一般电阻信号.高速脉冲输入点,处理高速脉冲信号.电压(含热电偶)输入点,处理电压输入或热电偶信号.还有通讯,用于和上位机交换数据或控制下级控制器仪表驱动器等

根据现场输入信号的不同，可将输入模块分为开关量输入模块和模拟量输入模块。开

关量输入模块的作用是把各种开关信号变成CPU所需的TTL标准信号。按输入端电源类型，又可将其为直流输入模块和交流输入模块。输入信号经分压、限流、滤波后再通过光电耦合转换成TTL（5V）标准信号。模拟量输入模块的作用是把现场连续变化的模拟量信号如温度、流量、电流、电压等转换成CPU能够处理的若干位数字信号。

模拟量输入电路一般由运放变换、模转换（A/D）、光电隔离等组成。PLC输入、输出模块的种类：数字输入DI,数字输出DO,模拟量输入AI，模拟量输出AO。

数字的输入输出一般都是24V的.模拟量的2类4种量,2类分别是电压型和电流型.电压型有0-10V和-10到10V.电流型主要有4-20MA,0-20MA.然后模块再通过A/D转换,把模拟量转换成+32767~-32768之间的数,然后再实行控制。信号模板的作用是把各种过程i/o信号进行转换.把输入的各种信号转换成数字量,便于plc识别,处理和分析.把输出转换成模拟量给各种调节机构去执行,或将输出转换成2位式do量,去控制一些设备如启动停止、接通和断开等

H4135A 992413560  数字输入输出模块

H4135A 992413560 digital input and output signal is the switching signal, 1 or 0, analog signal, there are two kinds, voltage or current signal, generally the signal transmitted by the transmitter, such as the pressure transmitter to detect the pressure of the water pipe, it will output an analog signal 4-20mA or 0-10V signal to the PLC, PLC for data processing.

The switching input point (DI) processes the switching input signal. Analog input point (AI), processing analog input signals (0-20mADC,0-5VDC). Resistance signal (including thermal resistance) input point, processing thermal resistance or general resistance signal. High-speed pulse input point, processing high-speed pulse signal. Voltage (including thermocouple) input point, processing voltage input or thermocouple signal. There is also communication, which is used to exchange data with the upper computer or control the instrument driver of the lower controller

According to the difference of field input signal, the input module can be divided into switching input module and analog input module. open

The function of the off input module is to convert various switching signals into TTL standard signals required by the CPU. According to the input power supply type, it can be divided into DC input module and AC input module. The input signal is converted into TTL (5V) standard signal by photoelectric coupling after voltage division, current limiting and filtering. The function of the analog input module is to convert the continuously changing analog signals such as temperature, flow, current, voltage, etc. into several digital signals that the CPU can process.

The analog input circuit is generally composed of op amp conversion, mode conversion (A/D), photoelectric isolation, etc. Types of PLC input and output modules: digital input DI, digital output DO, analog input AI, analog output AO.

Digital input and output are generally 24V. There are 4 kinds of analog quantities in 2 categories, and the 2 categories are voltage type and current type respectively. Voltage type has 0-10V and -10 to 10V. Current type mainly has 4-20MA,0-20MA. Then the module converts the analog quantity into A number between +32767 and -32768 through A/D conversion, and then implements the control. The function of the signal template is to convert various process i/o signals. The input signals are converted into digital quantities, which are easy for plc to identify, process and analyze. The output is converted into analog to various regulating mechanisms for execution, or the output is converted into a 2-bit do quantity to control some devices such as start, stop, on and off

H4135A 992413560  数字输入输出模块

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