?TRICONEX 9668-110
TRICONEX 9668-110
TRICONEX 9668-110
PC是以“串行”方式工作的,也就是以掃描的方式,循環(huán)地、連續(xù)地、順序地,逐條執(zhí)行程度的方式工作。同時,PC中,軟觸點的動作可認為是瞬時完成的,且其能把本次動作的結果記憶保持到下一次掃描運算時為止。即具有記憶保持功能。按這樣一個順序“串行”的工作方式,梯形圖動作順序如下:當在某一掃描周期中TIM00延時到后,則:
1. TIM00常閉觸點斷開(OFF),0000 OFF;
2. TIM00常開觸點閉合(ON),0001 ON;
3. 0000常開觸點OFF,0001常開觸點ON,TIM00繼續(xù)保持通電狀態(tài)。而且不論我們在0001與TIM00之間再加多少級前面繼電器電路所加的虛框中的回路,并把0001常開觸點換成所加回路最后一級繼電器的常開觸點,TIM00仍能繼續(xù)保持通電狀態(tài)。
同樣的電路,由于繼電器控制系統(tǒng)和PC控制系統(tǒng)工作方式上的差異,兩者會有不同的動作結果。注意到這一點,我們在編程時,就會避免一些不應有的錯誤。
備貨,備貨,降降降,火火火,火火火……
備貨,備貨,降降降,火火火,火火火……
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公司名稱:廈門泰尼電氣有限公司
聯(lián)系人:小黃(銷售代表)
聯(lián)系電話:0592-6809319
傳真號碼:0592-6890859(麻煩備注01006收)
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誠信經營,質量為首,誠信至上,泰尼電氣小黃竭誠為您服務!??!
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