描述

（3）并聯(lián)輸出通斷狀態(tài)完全相同的負(fù)載，可以并聯(lián)后共用PLC的一個(gè)輸出點(diǎn)（要考慮PLC輸出點(diǎn)的負(fù)載驅(qū)動(dòng)能力）。例如PLC控制的交通信燈，

對(duì)應(yīng)方向（東與西對(duì)應(yīng)、南與北對(duì)應(yīng)）的燈通斷規(guī)律完全相同，將對(duì)應(yīng)的燈并聯(lián)后可以節(jié)省一半的輸出點(diǎn)。

（4）負(fù)載多功能化一個(gè)負(fù)載實(shí)現(xiàn)多種用途。例如，在傳統(tǒng)的繼電控制系統(tǒng)中，一個(gè)指示燈只指示一種狀態(tài)。在PLC控制系統(tǒng)中，利用PLC的軟件很容易實(shí)現(xiàn)利用一個(gè)輸出點(diǎn)控制指示燈的常亮和閃亮，這樣就可以利用一個(gè)指示燈表示兩種不同的信息，從而節(jié)省PLC的輸出點(diǎn)。

（5）某些輸出信號(hào)不進(jìn)入PLC系統(tǒng)中某些相對(duì)獨(dú)立、比較簡(jiǎn)單的部分可以考慮不用PLC來(lái)控制，直接采用繼電器控制即可。

（6）利用輸出點(diǎn)擴(kuò)展輸出點(diǎn)與利用輸出點(diǎn)擴(kuò)展輸入點(diǎn)相似，也可以用輸出點(diǎn)分時(shí)控制一組輸出點(diǎn)的輸出內(nèi)容。例如：在輸出端口上接有多位LED7段碼顯示器時(shí)，如果采用直接連接，所需的輸出點(diǎn)是很多的。這時(shí)可使用圖9的電路利用輸出點(diǎn)的分時(shí)接通逐個(gè)點(diǎn)亮多位LED7段碼顯示器。

在圖9所示的電路中，CD4513是具有鎖存、譯碼功能的專用共陰極7圖9輸出口擴(kuò)展輸出口

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(lè)，ACSO，力士樂(lè)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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Enlarge

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