plc畢業(yè)設計中英文翻譯-plc設計-資料下載頁
2025-01-19 06:47本頁面
【導讀】作，并按照邏輯關系進行連鎖保護動作的控制，及大量離散量的數(shù)據(jù)采集。上，這些功能是通過氣動或電氣控制系統(tǒng)來實現(xiàn)的。在這時期，PLC在處理模擬量能力、數(shù)字運算能力、人機接口能力。在過程控制領域處于統(tǒng)治地位的DCS系統(tǒng)。PLC在工業(yè)自動化控制特別是順序控制中的地位，在可預見的將來，從結構上分，PLC分為固定式和組合式（模塊式）兩種。板、I/O板、顯示面板、內(nèi)存塊、電源等，這些元素組合成一個不可拆卸的整體。狀態(tài)總線構成，CPU單元還包括外圍芯片、總線接口及有關電路。存儲程序及數(shù)據(jù)，是PLC不可缺少的組成單元。PLC與電氣回路的接口，是通過輸入輸出部分（I/O）完成的。輸入模塊將電信號變換成數(shù)字信號進入PLC系統(tǒng)，輸出模塊相反。小編程器PLC一般有手持型編程器，目前一般由?？紤]到生產(chǎn)的發(fā)展和工藝的改進在選擇PLC容量時應適當留有余量。用戶程序是用戶根據(jù)現(xiàn)場控制要求，用PLC的程序語言編制的應用程序（也。做中間結果供CPU內(nèi)部使用。
【正文】 dure whether user according to onthespot control request, used for realizing various kinds of control with procedure application program (the logic control) that language make of PLC. STEP7 is used for SIMATIC programmable logic controller configuration and standard software package of programming, that is to say user procedure, we use STEP7 is it carry on hardware configuration and logic procedure work out to e, and the logic procedure carries out the monitoring online of the result Programming language that PLC offers laddershaped picture language of standard language is a kind of most frequently used languages of ours too, it has the following characteristic It is a kind of figure language, term of continuing to use relay contact , coil that the tradition controls in pictures , contacting etc. and some graphical symbols are formed , the vertical line of left and right sides is called and controlled the bus bar. The contact (contact ) only often opens and often closes in the laddershaped picture, the contact can be that can be a state of contact or inside register , counter of the relay ,etc. within PLC too that PLC input and click the switch connected . Contact of laddershaped picture can wanton bunch, connect in parallel, the coil can only be connected in parallel and can contact . Inside relay , counter , register ,etc. can39。t directly control outside load , can only make middle result to use while supporting CPU . PLC scans the incident according to circulation, carry out along the priority order of the laddershaped picture, result of the cycle stay in state of outputting temporarily in the person who deposit so value ordered to output can regard as terms use among the procedure in user in the same scanning. Sentence predicative speech , is similar to the assembler language . Logic functional diagram language, continue to use semiconductor logic block diagram is it express to e, one operation frame generally show one function on the left draw introduction , on the right paint and export. 4 Use the programe of STEP7 Establishing a project structure, the project is just like a file, all data exist among them with the structure of dividing floor, you can use at any time. After establishing a project, all other tasks are carried out under this project. Configuration one station, configuration one station to appoint you want programmable controller that use, such as S7300 , S7400 ,etc.. Configuration hardware, configuration hardware appoint control scheme of you want template that use and with what kind of address visit these template among the procedure in user among the form in configuration, the address needn39。t generally be revised and produced automatically by the procedure. The characteristic of the template can carry on assignment with the parameter too. Configuration work and munication connect, the foundation of the munication is the configuration work in advance , is it is it establish one meet control sub work of scheme of you , set up work characteristic , set up work connect characteristic and connection station need of working any to want to that is to say.
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