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  • 福州聚福興自動(dòng)化有限公司

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    福州聚福興自動(dòng)化有限公司是一家專業(yè)性銷售自動(dòng)化產(chǎn)品和技術(shù)開發(fā)服務(wù)公司。與工控產(chǎn)品廠商建立了長(zhǎng)期穩(wěn)定的技術(shù)和商務(wù)合作關(guān)系。公司的產(chǎn)品銷往全國(guó)各地,產(chǎn)品性價(jià)、服務(wù)質(zhì)量一直受到業(yè)界好評(píng)。是一家集產(chǎn)品代理銷售、技術(shù)咨詢、技術(shù)培訓(xùn)一體化的規(guī)范型自動(dòng)化公司。專業(yè)經(jīng)營(yíng)德國(guó)、美國(guó)、日本、法國(guó)等電氣品牌.提供先進(jìn)的自動(dòng)化電氣器件等產(chǎn)品。產(chǎn)品應(yīng)用于鋼鐵、電力、制冷、航天、煙草、水處理、輸變電、建筑、工廠等行業(yè)。本著:睿智創(chuàng)新、誠(chéng)信服務(wù)宗旨。為客戶創(chuàng)造價(jià)值,為社會(huì)創(chuàng)造效益。長(zhǎng)期提供全方位的服務(wù)!
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    1494C-DJ622-A4-B-F
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    產(chǎn)品/服務(wù): 瀏覽次數(shù):321494C-DJ622-A4-B-F 
    型 號(hào): 進(jìn)口PLC 
    規(guī) 格: %E8%BF%9B%E5%8F%A3PLC 
    品 牌: AB 
    單 價(jià): 360.00元/個(gè) 
    起訂量: 1 個(gè) 
    供貨總量: 500 個(gè)
    發(fā)貨期限: 自買家付款之日起 3 天內(nèi)發(fā)貨
    更新日期: 2018-08-28  有效期至:長(zhǎng)期有效
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    產(chǎn)品屬性
     產(chǎn)品型號(hào):  進(jìn)口PLC
     產(chǎn)品規(guī)格:  %E8%BF%9B%E5%8F%A3PLC
     產(chǎn)品品牌:  AB
    產(chǎn)品優(yōu)勢(shì)
    供應(yīng)進(jìn)口伺服控制系統(tǒng),PLC,DCS,模塊,卡件,機(jī)槽,底板,電源,線纜,觸摸屏,采集卡,影像卡,電機(jī),馬達(dá),編碼器,傳感器,工業(yè)相頭......1494C-DJ622-A4-B-F
    詳細(xì)信息

    1494C-DJ622-A4-B-F現(xiàn)貨


    聚福興自動(dòng)化主營(yíng):PLC模塊,DCS模塊,CPU模塊,IO模塊,DO模塊,AI模塊,DI模塊,網(wǎng)絡(luò)通信模塊,以太網(wǎng)模塊,運(yùn)動(dòng)控制模塊,模擬量輸入模塊,模擬量輸出模塊,數(shù)字輸入模塊,數(shù)字輸出模塊,冗余模塊,電源模塊,繼電器輸出模塊,繼電器輸入模塊,處理器模塊。
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    L LD4 AR1+P#2.0→AR1
    + L#16 ACC1+(.._0001_0 000)
    T LD4 調(diào)整模入模塊地址指針,指向下一通道Acc1+(bb bbbb bxxx)
    L LD8
    + L#16
    T LD8 調(diào)整數(shù)據(jù)塊存儲(chǔ)地址指針,指向下一存儲(chǔ)地址
    L LW0 將循環(huán)次數(shù)計(jì)數(shù)器LW0的值裝入累加器1
    LOOP NEXT 若累加器1的值不為0,將累加器減1繼續(xù)循環(huán);若累加
    器為0,則結(jié)束
    在FC100中,寄存器間接尋址指令OP NDB[LW0]使用了臨時(shí)本地?cái)?shù)據(jù)LW0,變量表中定義的臨時(shí)變量雖然也在L堆棧中,但不能用于存儲(chǔ)器間接尋址,從這里也可看出臨時(shí)本地?cái)?shù)據(jù)與臨時(shí)變量的區(qū)別。程序中LW2、LD4和LD8起的作用也可用臨時(shí)變量替代。
    下面舉例說明如何使用FC100。在某應(yīng)用中,機(jī)架0的4號(hào)槽位安裝了一個(gè)8模入模塊(地址256開始),若要將前6個(gè)模入模塊信號(hào)讀回,存入DB50.DBW10開始的6個(gè)字單元中,可按下列形式調(diào)用FC100:
    CALL FC100
    PIW_Add:= 256
    CH_LEN:= 6
    DB_No:= 50
    DBW_Addr:= 10
    數(shù)據(jù)塊
    數(shù)據(jù)塊定義在S7 CPU存儲(chǔ)器中,用戶可在存儲(chǔ)器中建立一個(gè)或多個(gè)數(shù)據(jù)塊。每個(gè)數(shù)據(jù)塊可大可小,但CPU對(duì)數(shù)據(jù)塊數(shù)量及數(shù)據(jù)總量有限制,如對(duì)于CPU314,用作數(shù)據(jù)塊的存儲(chǔ)器多為8 KB(8192 B),用戶定義的數(shù)據(jù)總量不能超出這個(gè)限制。對(duì)數(shù)據(jù)塊必須遵循先定義后使用的原則,否則,將造成系統(tǒng)錯(cuò)誤。
    1. 定義數(shù)據(jù)塊
    在編程階段和運(yùn)行程序中都能定義數(shù)據(jù)塊。大多數(shù)數(shù)據(jù)塊是在編程階段用STEP 7開發(fā)軟件包定義的,定義內(nèi)容包括數(shù)據(jù)塊號(hào)及塊中的變量(包括變量符號(hào)名、數(shù)據(jù)類型以及初始值等),定義完成后,數(shù)據(jù)塊中變量的順序及類型決定了數(shù)據(jù)塊的數(shù)據(jù)結(jié)構(gòu),變量的數(shù)量決定了數(shù)據(jù)塊的大小。數(shù)據(jù)塊在使用前,必須作為用戶程序的一部分下載到CPU中。

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