平谷區(qū)M1000ML5AC5M-500K說明詳情
福州佳盛和電子貿(mào)易有限公司
聯(lián)系人:張經(jīng)理
咨詢熱線:18750780683(wx同號)
QQ:1768625723
主營產(chǎn)品
1:Invensys Foxboro(福克斯波羅):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場輸入/輸出模塊)順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號處理、數(shù)據(jù)通信及處理等。
2:Invensys Triconex: 冗余容錯控制系統(tǒng)、基于三重模件冗余(TMR)結(jié)構(gòu)的現(xiàn)代化的容錯控制器。
3:Westinghouse(西屋): OVATION系統(tǒng)、WDPF系統(tǒng)、WEStation系統(tǒng)備件。
4:Rockwell Allen-Bradley: Reliance瑞恩、SLC500/1747/1746、MicroLogix/1761/1763/1762/1766/1764、CompactLogix/1769/1768、Logix5000/1756/1789/1794/1760/1788、PLC-5/1771/1785等。
5:Schneider Modicon(施耐德莫迪康):Quantum 140系列處理器、控制卡、電源模塊等。
6:ABB:工業(yè)機器人備件DSQC系列、Bailey INFI 90等。
7:Siemens(西門子):Siemens MOORE, Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
8:Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
9:XYCOM:I/O 、VME板和處理器等。
10:GE FANUC(GE發(fā)那科):模塊、卡件、驅(qū)動器等各類備件。
PLC應用程序應限度地被控對象的控制要求,在構(gòu)思程序主體的框架后,要以它為主線,逐一編寫實現(xiàn)各控制功能或各子任務的程序。經(jīng)過不斷他調(diào)整和完善。使程序能完成所要求的控制功能。另外,PLC應用程序通常還應包括以下幾個方面的內(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。其作用是為啟動作必要的準備,并避免系統(tǒng)發(fā)生誤動作。初始化程序的主要內(nèi)容為:將某些數(shù)據(jù)區(qū)、計數(shù)器進行清零;使某些數(shù)據(jù)區(qū)恢復所需數(shù)據(jù);對某些輸出量置位或復位;顯示某些初始狀態(tài)等等。
2、信號檢測、故障診斷、數(shù)據(jù)顯示、設備聯(lián)絡等內(nèi)容均可以作為常規(guī)預留。這些內(nèi)容可以在程序設計基本完成時再進行添加。它們也可以是相對的程序段。
3、保護、連鎖程序。各種應用程序中,保護和連鎖是不可缺少的部分。它可以杜絕由于非法操作而引起的控制邏輯混亂,保證系統(tǒng)的運行更安全、可靠。因此要認真考慮保護和連鎖的問題。通常在PLC外部也要設置連鎖和保護措施。
4、PLC主體程序和子程序。這是鐘跟工藝控制相關的邏輯與運算,一般都可以按照空間或時間來分類編寫子程序,每一個子程序預先分配足夠的的數(shù)據(jù)存儲區(qū)域或數(shù)據(jù)塊,程序變量名稱統(tǒng)一規(guī)劃,繁雜的地方一定要詳細注釋。貫通工藝,充分采集設備參數(shù)和操作人員的需求信息,才能編寫出一套易于驗收的合格程序。
一、plc控制系統(tǒng)的設計內(nèi)容
(1)根據(jù)設計任務書,進行工藝分析,并確定控制方案,它是設計的依據(jù)。
(2)選擇輸入設備(如按鈕、開關、傳感器等)和輸出設備(如繼電器、接觸器、指示燈等執(zhí)行機構(gòu))。
(3)選定PLC的型號(包括機型、容量、I/O模塊和電源等)。
(4)分配PLC的I/O點,繪制PLC的I/O硬件接線圖。
(5)編寫程序并調(diào)試。
(6)設計控制系統(tǒng)的操作臺、電氣控制柜等以及安裝接線圖。
(7)編寫設計說明書和使用說明書。
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