ABB PM860K01 输入模块

ABB PM860K01 输入模块以下是基本内容：PM860K01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 。

The basic content of ABB PM860K01 input module is as follows: PM860K01 can be divided into switch input module and analog input module according to the different on-site input signals. The function of the switch input module is to convert various switch signals into TTL standard signals required by the CPU. According to the type of input power supply, it can also be divided into DC input module and AC input module. The input signal is divided by voltage, limited by current, filtered, and then converted into a TTL (5V) standard signal through optoelectronic coupling. The function of the analog input module is to convert continuously changing analog signals such as temperature, flow rate, current, voltage, etc. on site into several digital signals that the CPU can process. Analog input circuits generally consist of operational amplifier conversion, analog-to-digital conversion (A/D), optoelectronic ***lation, etc.

The types of PLC input and output modules include digital input DI, digital output DO, analog input AI, and analog output AO. The input and output of numbers are generally 24V There are two types and four types of analog quantities, namely voltage type and current type. Voltage type has 0-10V and -10 to 10V, while current type mainly has 4-20MA and 0-20MA. Then, the module converts the analog quantity into a number between+32767 and -32768 through A/D conversion, and then implements control. The function of signal templates is to convert various process I/O signals. The input signals are converted into digital quantities for PLC recognition, processing, and analysis. The output is converted into analog quantities for various adjustment mechanisms to execute, or the output is converted into a 2-digit DO quantity to control some devices such as start stop, turn on, and turn off.