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。
PM860K01
PM860K01 can be divided into switch input module and analog input module based on 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 into voltage, limited 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, current, voltage, etc. on site into several digital signals that the CPU can process. The analog input circuit generally consists of operational amplifier conversion, analog-to-digital conversion (A/D), optoelectronic isolation, etc. Types of PLC input and output modules: digital input DI, digital output DO, analog input AI, and analog output AO. The digital input and output are generally 24V There are two types of analog quantities: voltage type and current type. The voltage type is 0-10V and -10 to 10V, while the current type is mainly 4-20MA and 0-20MA. The module then 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 identification, processing, and analysis. The output is converted into analog quantities for various adjustment mechanisms to execute, or the output is converted into 2-bit DO quantities to control some devices such as start stop, turn on, and turn off.
PM860K01
PLC控制器本身的硬件采用积木式结构，各厂家产品结构大同小异。以日本欧姆龙C200HE为例，为总线模板框式结构，基本框架(CPU母板)上装有CPU模板，其它槽位装有I/O模板;如果I/O模板多时，可由CPU母板经I/O扩展电缆连接I/O扩展母板，在其上装I/O模板;另一种方法是配备远程I/O从站等。这些都说明了PLC厂家将硬件各部件均向用户开发，便于用户选用，配置成规模不等的PLC，而且这种硬件配置的开放性，为制造商、分销商(代理商)、系统集成商、最终用户带来很多方便，为营销供应链带来很大便利，这是一大成功经验。
PM860K01
There are no reviews yet.