PLC control system is a new generation of industrial control installation based on the introduction of microelectronics technology, computer technology, automatic control technology and communication technology on the basis of the traditional secondary controller. Its purpose is to replace the secondary control functions such as relay, executive logic, timing and counting, and establish a flexible remote control system. It has the characteristics of strong versatility, easy to use, wide adaptability, high reliability, strong anti-interference ability, simple programming and so on.

簡單來說，就是經過代碼驅動新興的控制安裝來驅動產品停止邏輯運轉，完成產品自動化工作。

In short, it is to drive the product to stop logical operation and complete product automation through code driven emerging control installation.

PLC控制系統相比繼電器而言有哪些功用特性和優勢呢?

What are the functional characteristics and advantages of PLC control system compared with relays?

1、編程容易。PLC的編程多采用繼電器控制梯形圖及命令語句，其數量比微型機指令要少得多，除中、PLC外，普通的小型PLC只要16條左右。由于梯形圖形象而簡單，因而容易控制、運用便當，以至不需求計算機學問，就可停止編程。

1. Programming is easy. The programming of PLC mostly adopts relay control ladder diagram and command statements, and its number is much less than that of microcomputer instructions. Except for medium-sized PLC and PLC, there are only about 16 ordinary small-sized PLC. Because the ladder diagram is vivid and simple, it is easy to control and use, so that programming can be stopped without computer expertise.

2、組態靈敏。由于PLC采用積木式構造，用戶只需求簡單地組合，便可靈敏地改動控制系統的功用和范圍，因而，可適用于任何控制系統。

2. Configuration sensitivity. Because PLC adopts building block structure, users only need to combine it simply, and then they can sensitively change the function and scope of the control system. Therefore, it can be applied to any control system.

3、裝置便當。與計算機系統相比，PLC的裝置既不需求專用機房，也不需求嚴厲的屏蔽措施。運用時只需把檢測器件與執行機構和PLC的I/O接口端子正確銜接，便可正常工作。

3. The device is convenient. Compared with computer systems, PLC devices do not require special machine rooms or strict shielding measures. When using, it only needs to correctly connect the detection device with the i/o interface terminal of the actuator and PLC, and it can work normally.

4、運轉速度快。由于PLC的控制是由程序控制執行的，因此不管其牢靠性還是運轉速度，都是繼電器邏輯控制無法相比的。

4. Fast running speed. Since the control of PLC is performed by program control, its reliability and running speed are unmatched by relay logic control.

關于PLC控制系統在超聲波清洗機上的應用

Application of PLC control system in ultrasonic cleaning machine

就市面上的超聲波清洗設備來說，廠家只要在大型、全自動超聲波清洗機上才會裝置PLC控制系統。裝置PLC的全自動超聲波清洗機，能夠在清洗工作的根底流程上，采用PLC控制計劃，給出PLC控制系統的硬件和軟件設計，使系統高效的完成消費線上的清洗任務，能夠充沛表現出PLC所具有的功用強、牢靠性高、編程簡單、運用便當、體積小等優點。

As far as the ultrasonic cleaning equipment on the market is concerned, the manufacturer will only install the PLC control system on the large-scale and full-automatic ultrasonic cleaning machine. The full-automatic ultrasonic cleaning machine equipped with PLC can adopt PLC control plan in the basic process of cleaning work, and give the hardware and software design of PLC control system, so that the system can efficiently complete the cleaning task on the consumption line, which can fully show the advantages of PLC, such as strong function, high reliability, simple programming, easy use, small volume and so on.

全自動超聲波清洗機的PLC控制系統由可編程控制器的梯形圖言語將程序編寫，并完成PLC的編程調試來完成控制請求。在超聲波清洗消費線中，完成精細機械零件從清洗到烘干的全自動過程，收到了良好的清洗效果，進步了消費效率。

The PLC control system of the automatic ultrasonic cleaning machine is programmed by the ladder diagram language of the programmable controller, and the PLC programming and debugging are completed to complete the control request. In the ultrasonic cleaning consumption line, the fully automatic process from cleaning to drying of fine mechanical parts is completed, which has received a good cleaning effect and improved the consumption efficiency.

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