KNH34-N2A

我們的產品均提供一年質保，15天有任何質量問題包退換，做到讓您放心的購買，安心的使用，誠信經營理念.

而在我國嵌入式PLC的發展空間，首先在于它十分有利于發揮我國自動化行業發展的兩大特點：有相當雄厚的為機電設備配套的市場基礎，并擁有足夠的、性價比全球最優的設計開發隊伍。我們完全可以以最低的成本、較高的質量，并按客制化的要求設計、生產為機電設備配套的嵌入式PLC，來代替通用PLC。

　　同時，嵌入式PLC的硬件、軟件、人機界面、通信等各方面的功能設計靈活，易于剪裁，更貼近各種檔次的機電設備的要求。嵌入式PLC完全基于嵌入式系統的技術基礎，拿來就可用。SOC芯片、嵌入式操作系統與符合工EC61131-3編程語言標準的編程環境等優勢，使得其在市場上很容易找到。

PAC應用的大環境已經成熟

二、外圍線路故障

1、電源模塊故障

1 測試系統組成

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2 測試系統設計

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PLC中的控制程序實現的功能主要有：

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4 結論

(4)交叉開發調試算法研究

非嵌入式通常采用本機開發、本機調試、本機運行的開發方式;而嵌入式開發需要交叉開發，絕大多數采用宿主機開發、宿主機和目標機之間交叉調試、目標機運行的方式開發。

交叉開發調試算法：

在宿主機平臺上編寫程序代碼;

固化監控器至目標機上;

連接宿主機和目標機;

編譯鏈接應用程序，生成可執行代碼;

將可執行代碼下載到目標機;

使用交叉調試器進行調試;

如果程序調試沒有發現異常，轉至11);

調試程序時發生錯誤，利用交叉調試器定位錯誤;

修改錯誤代碼;

重復4)-10);

將目標機程序固化在目標機上。

4 嵌入式軟PLC改造后的控制系統

以測試繼電器TV5實驗為例。其要求如下：每次測試5個繼電器，每個繼電器的動作頻率是5s開，5s關。根據要求，試驗最好的結果是每個繼電器用6個TV負載，即每個TV負載是5s開，55s管。輸入點有：開關，檢出，復位M個，停止次數設定量N次，動作頻率設定L個，常開/觸點轉換。其中，M=測試產品個數，N、L個數由實際需要確定。其算法如下：

此系統可用于繼電器、馬達、電感、充電器等產品的測試。改進后仍存在以下幾點缺陷：其一，如果負載斷路，其本身并不能檢測和保護;如果負載短路，產品在短時間內產生過電流控制工程網版權所有，會造成產品破壞甚至威脅人身安全。其二，數據采集不全，不能實時監控。利用電流計可以彌補第一點的不足;采用數據采集卡可以實現實時數據采集。

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廈門岳航計算機工程有限公司

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