1769-OF8V現(xiàn)貨
A16B-2200-0360 1 機(jī)械控制更大的集成性和靈活性 2 當(dāng)標(biāo)準(zhǔn)控制層智能化時(shí),能夠進(jìn)行更好更容易的故障診斷 3 更快、更方便的維護(hù) 4 減少安裝、調(diào)試以及重新配置的費(fèi)用 5 與對(duì)于邏輯單獨(dú)使用安全繼電器相比,降低了設(shè)計(jì)和硬件成本 6 提高復(fù)雜系統(tǒng)生產(chǎn)性能的潛在能力通信 德國(guó)西門子(SIEMENS)公司生產(chǎn)的可編程序控制器在我國(guó)的應(yīng)用也相當(dāng)廣泛,在冶金、化工、印刷生產(chǎn)線等領(lǐng)域都有應(yīng)用。西門子(SIEMENS)公司的PLc產(chǎn)品包括LOGO,s7200,s7300,s7400,工業(yè)網(wǎng)絡(luò),Hil人機(jī)界面,工業(yè)軟件等。 西門子S7系列PLC體積小、速度快、標(biāo)準(zhǔn)化,具有網(wǎng)絡(luò)通信能力,功能更強(qiáng),可靠性更高。s7系列PLc產(chǎn)品可分為微型PLc(如s7200) 小規(guī)模rl生能要求的PLc(如s7300)和中、高性能要求的PLc(如s7400)等。 s7200Plc可提供4個(gè)不同的基本型號(hào)與8種CPU可供選擇使用。 西門子s7300,模塊化微型PLc,滿足中小規(guī)模的性能要求。 SIMATIC S7400H:冗余的中央處理能力。 s7400 PLc是用于中、性能范圍的可編程序控制器。s7400 PLc采用模塊化無風(fēng)扇的設(shè)計(jì),可靠耐用,同時(shí)可以選用多種級(jí)別(功能逐步升級(jí))的CPU,并配有多種通用功能的模板,這使用戶能根據(jù)需要組合成不同的專用系統(tǒng)。當(dāng)控制系統(tǒng)規(guī)模擴(kuò)大或升級(jí)時(shí),只要適當(dāng)?shù)卦黾右恍┠0?,便能使系統(tǒng)升級(jí)和充分滿足需要。
Network 7 復(fù)位累計(jì)啟動(dòng)次數(shù)的計(jì)數(shù)器
A #Reset_Maint
A #Maint
JCN END
L 0
T #Starts
END:NOP 0
6. 生成閥門FC
入口和進(jìn)料閥以及排料閥的功能包含以下邏輯功能:
(1) 一個(gè)用于打開閥門的輸入,一個(gè)用于關(guān)閉閥門的輸入。
(2) 互鎖允許閥門被打開?;ユi狀態(tài)存儲(chǔ)在OB1的臨時(shí)局域數(shù)據(jù)(L堆棧)中(“Valve_enable”),并且在閥門的FC被處理時(shí)與打開和關(guān)閉的輸入進(jìn)行邏輯組合
由于被調(diào)用的塊必須在調(diào)用塊之前生成,因此閥門的FCl功能必須在OB1之前生成。STL編程語言的FCl程序部分如下:
Network l 打開關(guān)閉和鎖存
A(
O #Open
O #Valve
)
AN #Close
= #Valve
Network 2 顯示“閥門打開”
A #Valve
= #Dsp_Open
Network 3 顯示“閥門關(guān)閉”
AN #Valve
= #DSp_Closed
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