描述

第一個(gè)X0的上升沿，將使Y0線圈接通并自鎖。同時(shí)，CT100對(duì)X0作減1計(jì)數(shù)。X0的第二個(gè)上升沿到來時(shí)對(duì)Y0不起作用，但CT100對(duì)其計(jì)數(shù)，故C100常開閉合使R0線圈接通。下一個(gè)掃描周期，斷開了的R0常閉觸點(diǎn)使Y0線圈斷開并打開自鎖；閉合了的R0常開觸點(diǎn)使CT100復(fù)位，進(jìn)而C100常開觸點(diǎn)斷開使R0線圈斷開，整個(gè)系統(tǒng)復(fù)位等待第三個(gè)X0的上升沿……。圖中R9013是PLC初始閉合繼電器觸點(diǎn)，在系統(tǒng)中起初始復(fù)位作用。因?yàn)镃T100默認(rèn)為保持型，Y0為非保持型，在Y0輸出狀態(tài)下電源斷電或PLC由運(yùn)行轉(zhuǎn)為編輯后Y0斷開而CT100保持計(jì)數(shù)值“1”。若梯形圖中去掉R9013常開觸點(diǎn)，在系統(tǒng)再恢復(fù)運(yùn)行時(shí)第一次按動(dòng)X0將不能啟動(dòng)系統(tǒng)，只有在第二次按動(dòng)X0時(shí)才能啟動(dòng)系統(tǒng)。

歐美品牌停產(chǎn)的，常用的“PLC”備品備件

我司產(chǎn)品應(yīng)用于以下領(lǐng)域：

1,《發(fā)電廠DCS監(jiān)控系統(tǒng)》

2,《智能平鋼化爐系統(tǒng)制造》

3,《PLC可編程輸送控制系統(tǒng)》

4,《DCS集散控制系統(tǒng)》
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5,《智能型消防供水控制系統(tǒng)》

6,《化工廠藥液恒流量計(jì)算機(jī)控制系統(tǒng)》

7,《電氣控制系統(tǒng)》造紙,印染生產(chǎn)線,變電站綜合自動(dòng)化控制系列

本特利，英維思，伍德沃德，福克斯波羅、西屋、瑞恩、施耐德莫迪康、ABB、AB、西門子、摩托羅拉、GE發(fā)那科、安川、博世力士樂，ACSO，力士樂等各大品牌的DCS系統(tǒng)配件，機(jī)器人系統(tǒng)配件，大型伺服系統(tǒng)備件。

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