2711-B5A9L2
2711-B5A9L2PLC的工作原理如下:
PLC是由CPU、內(nèi)存、輸入/輸出模塊和通信模塊等組成的系統(tǒng)。在PLC系統(tǒng)中,通常包括輸入模塊和輸出模塊。輸入模塊負(fù)責(zé)將各種傳感器和開關(guān)信號(hào)轉(zhuǎn)換成數(shù)字信號(hào)并輸入到CPU中。輸出模塊負(fù)責(zé)接收CPU輸出的指令,并將其轉(zhuǎn)換成所需的控制信號(hào)并輸出到執(zhí)行器中。
PLC系統(tǒng)的工作流程如下:
1. 在開始工作時(shí),PLC讀取輸入信號(hào)。
2. CPU對(duì)應(yīng)程序根據(jù)預(yù)設(shè)的邏輯,處理輸入信號(hào)并輸出所需的指令,將其傳遞給輸出模塊。
3. 輸出模塊將輸出信號(hào)轉(zhuǎn)換成控制信號(hào),并將其輸出到執(zhí)行器中。
2711-B5A9L2
RELIANCE 0-51811-3
RELIANCE 0-51811-4
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