SGM-01U3B4L現(xiàn)貨

CUB5TCR傳感器是令人驚奇的小器件，大小僅為幾平方毫米，通常包含兩個(gè)芯片。一個(gè)是傳感器芯片，通常來說TT-29370-1030-EA器件提供運(yùn)動(dòng)或壓力信息，但它也可以用作磁性固態(tài)傳感器。另一個(gè)芯片提供必要的信號處理功能，JZNC-MRK12可將來自傳感器的微弱的模擬信號轉(zhuǎn)換為有用信息，并通過一些串行總線傳遞這些信息。

4．分配IO點(diǎn)，編制出輸入輸出端子的接線圖。
5．設(shè)計(jì)應(yīng)用系統(tǒng)梯形圖程序，這一步是整個(gè)應(yīng)用系統(tǒng)設(shè)計(jì)核心的工作。
6．將程序輸入PLC，當(dāng)使用計(jì)算機(jī)上編程時(shí)，可將程序下載到PLC中。
7．進(jìn)行軟件測試，在將PLC連接到現(xiàn)場設(shè)備上之前，必須進(jìn)行軟件測試，以排除程序中的錯(cuò)誤。
8．應(yīng)用系統(tǒng)整體調(diào)試，在PLC軟硬件設(shè)計(jì)和控制柜及現(xiàn)場施工完成后，就可以進(jìn)行整個(gè)系統(tǒng)的聯(lián)機(jī)調(diào)試。調(diào)試中發(fā)現(xiàn)的問題要逐一排除，直至調(diào)試成功。
9．編制技術(shù)文件， 系統(tǒng)技術(shù)文件包括功能說明書、電氣原理圖、電器布置圖、電氣元件明細(xì)表、PLC梯形圖等。
PLC選型
在滿足控制要求的前提下，選型時(shí)應(yīng)選擇的性能價(jià)格比，具體應(yīng)考慮以下幾點(diǎn)。
1．性能與任務(wù)相適應(yīng)
2．PLC的處理速度應(yīng)滿足實(shí)時(shí)控制的要求
3．PLC應(yīng)用系統(tǒng)結(jié)構(gòu)合理、機(jī)型系列應(yīng)統(tǒng)一
4．在線編程和離線編程的選擇
PLC容量估算
PLC容量包括兩個(gè)方面：一是IO的點(diǎn)數(shù)，二是用戶存儲器的 容量。
1．IO點(diǎn)數(shù)的估算
根據(jù)功能說明書，可統(tǒng)計(jì)出PLC系統(tǒng)的開關(guān)量IO點(diǎn)數(shù)及模擬量IO通道數(shù)，以及開關(guān)量和模擬量的信號類型。應(yīng)在統(tǒng)計(jì)后得出IO總點(diǎn)數(shù)的基礎(chǔ)上，增加10％～15％的裕量。選定的PLC機(jī)型的IO能力極限值必須大于IO點(diǎn)數(shù)估算值，并應(yīng)盡量避免使PLC能力接近飽和，一般應(yīng)留有30％左右的裕量。
2. 存儲器容量估算
用戶應(yīng)用程序占用多少內(nèi)存與許多因素有關(guān)，如IO點(diǎn)數(shù)、控制要求、運(yùn)算處理量、程序結(jié)構(gòu)等。因此在程序設(shè)計(jì)之前只能粗略的估算。根據(jù)經(jīng)驗(yàn)，每個(gè)IO點(diǎn)及有關(guān)功能器件占用的內(nèi)存大致如下：
所需存儲器容量(KB)＝(1～1.25)×(DI×10＋DO×8＋AIO×100＋CP×300)1024
其中：DI為數(shù)字量輸入總點(diǎn)數(shù)；DO為數(shù)字量輸出總點(diǎn)數(shù)；AIAO為模擬量IO通道總數(shù)；CP為通信接口總數(shù)。
IO模塊的選擇
1．開關(guān)量輸入模塊的選擇
PLC的輸入模塊用來檢測來自現(xiàn)場(如按鈕、行程開關(guān)、溫控開關(guān)、壓力開關(guān)等)電平信號，并將其轉(zhuǎn)換為PLC內(nèi)部的低電平信號。開關(guān)量輸入模塊按輸

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