1X00024H01 西屋电气 DCS系统模块卡件

1X00024H01 西屋电气 DCS系统模块卡件

1X00024H01 西屋电气 DCS系统模块卡件

开关是常见的电子元件，功能就是电路的接通和断开。接通则电流可以通过，反之电流无法通过。在各种电子设备、家用电器中都可以见到开关。 PLC可以方便地实现逻辑控制取代传统的继电器。

继电器是我们生活中常用的一种控制设备，通俗的意义上来说就是开关，在条件满足的情况下关闭或者开启。继电器的开关特性在很多的控制系统尤其是离散的控制系统中得到广泛的应用。

从另一个角度来说，由于为某一个用途设计使用的电子电路，最终或多或少都需要和某一些机械设备相交互，所以继电器也起到电子设备和机械设备的接口作用。

A switch is a common electronic component whose function is to open and disconnect a circuit. If on, the current can pass through, otherwise the current cannot pass through. Switches can be seen in all kinds of electronic equipment and household appliances. PLC can easily achieve logic control instead of traditional relays.

Relay is a control device commonly used in our lives, which is a switch in the popular sense, which is turned off or on when the conditions are met. The switching characteristics of relays are widely used in many control systems, especially in discrete control systems.

From another point of view, because the electronic circuit designed for a certain purpose needs to interact with some mechanical equipment more or less in the end, the relay also plays an interface role between electronic equipment and mechanical equipment.

1X00024H01 西屋电气 DCS系统模块卡件