UFS-22 模塊
【簡單介紹】
【詳細(xì)說明】
廈門仲鑫達(dá)自動(dòng)化設(shè)備有限公司
;(陳工)
;
廈門市思明區(qū)湖濱東路湖光大廈8樓A座
(3)數(shù)據(jù)寄存器(D)的當(dāng)前值;
(4) FX1N的特殊單元和特殊模塊中的緩沖寄存器;
(5)PLC出現(xiàn)錯(cuò)誤時(shí),可顯示錯(cuò)誤代碼;
(6)顯示實(shí)時(shí)鐘的當(dāng)前值,并能設(shè)置日期和時(shí)間。
FX1N–5DM可將位編程元件Y,M,s強(qiáng)制設(shè)置為ON或OFF狀態(tài)??筛淖僒,C和D的當(dāng)前值,以及T和C的設(shè)定值,可設(shè)備的監(jiān)控功能。
2.顯示模塊FX-10DM-E
FX-10DM-E可安裝在面板上,用電纜與PLC相連,有5個(gè)鍵和帶背光的LED顯示器,可顯示兩行數(shù)據(jù),每行16個(gè)字符,可用于各種型號(hào)的FX系列PLC??杀O(jiān)視和修改T,C的當(dāng)前值和設(shè)定值,監(jiān)視和修改D的當(dāng)前值。連接圖和PLC外圍電氣線路圖組成系統(tǒng)的電氣原理圖。到此為止系統(tǒng)的硬件電氣線路已經(jīng)確定。
(五)程序設(shè)計(jì)
1.程序設(shè)計(jì)
根據(jù)系統(tǒng)的控制要求,采用合適的設(shè)計(jì)方法來設(shè)計(jì)PLC程序。程序要以滿足系統(tǒng)控制要求為主線,逐一編寫實(shí)現(xiàn)各控制功能或各子任務(wù)的程序,逐步完善系統(tǒng)的功能。除此之外,程序通常還應(yīng)包括以下內(nèi)容:
1)初始化程序。在PLC上電后,一般都要做一些初始化的操作,為啟動(dòng)作必要的準(zhǔn)備,避免系統(tǒng)發(fā)生誤動(dòng)作。初始化程序的主要內(nèi)容有:對(duì)某些數(shù)據(jù)區(qū)、計(jì)數(shù)器等進(jìn)行清零,對(duì)某些數(shù)據(jù)區(qū)所需數(shù)據(jù)進(jìn)行恢復(fù),對(duì)某些繼電器進(jìn)行置位或復(fù)位,對(duì)某些初始狀態(tài)進(jìn)行顯示等等。 新階段。程序執(zhí)行階段的運(yùn)算結(jié)果被存入輸出映像區(qū),而不送到輸出端口上。在輸出刷新階段,PLC將輸出映像區(qū)中的輸出變量送入輸出鎖存器,然后由鎖存器通過輸出模塊產(chǎn)生本周期的控制輸出。如果內(nèi)部輸出繼電器的狀態(tài)為“1”,則輸出繼電器觸點(diǎn)閉合,經(jīng)過輸出端子驅(qū)動(dòng)外部負(fù)載。全部輸出設(shè)備的狀態(tài)要保持一個(gè)掃描周期。
l TAR1 將地址寄存器1的內(nèi)容傳輸?shù)嚼奂悠?
l TAR2 將地址寄存器1的內(nèi)容傳輸?shù)嚼奂悠?
l CAR 交換地址寄存器的1的內(nèi)容和地址寄存器2的內(nèi)容交換
(Ⅲ)處理通訊請(qǐng)求:S7-200執(zhí)行通訊處理。
(Ⅳ)執(zhí)行CPU自診斷:S7-200檢查固件、程序存儲(chǔ)
器和擴(kuò)展模塊是否工作正常
=,在執(zhí)行輸出指令時(shí),映像寄存器中的參數(shù)位被接通。
四、置位與復(fù)位指令S、R
S,執(zhí)行置位(置1)指令時(shí),從bit或OUT的地址參數(shù)開始的N個(gè)點(diǎn)都被置位。
R,執(zhí)行復(fù)位(置0)指令時(shí),從bit或OUT的地址參數(shù)開始的N個(gè)點(diǎn)都被復(fù)位。
置位與復(fù)位的點(diǎn)數(shù)可以是1-255,當(dāng)用復(fù)位指令時(shí),如果bit或OUT的是T或C時(shí),那么定時(shí)器或計(jì)數(shù)器被復(fù)位,同時(shí)當(dāng)前值將被清零。
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