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功能表圖(Sepuential Function Chart)程序設(shè)計(jì)語(yǔ)言
功能表圖程序設(shè)計(jì)語(yǔ)言是用功能表圖來(lái)描述程序的一種程序設(shè)計(jì)語(yǔ)言。它是近年來(lái)發(fā)展起來(lái)的一種程序設(shè)計(jì)語(yǔ)言。采用功能表圖的描述,控制系統(tǒng)被分為若干個(gè)子系統(tǒng),從功能入手,使系統(tǒng)的操作具有明確的含義,便于設(shè)計(jì)人員和操作人員設(shè)計(jì)思想的溝通,便于程序的分工設(shè)計(jì)和檢查調(diào)試。
功能表圖程序設(shè)計(jì)語(yǔ)言的特點(diǎn)是:
(1)以功能為主線,條理清楚,便于對(duì)程序操作的理解和溝通;
(2)對(duì)大型的程序,可分工設(shè)計(jì),采用較為靈活的程序結(jié)構(gòu),可節(jié)省程序設(shè)計(jì)時(shí)間和調(diào)試時(shí)間;
(3)常用于系統(tǒng)的規(guī)模校大,程序關(guān)系較復(fù)雜的場(chǎng)合;
(4)只有在活動(dòng)步的命令和操作被執(zhí)行,對(duì)活動(dòng)步后的轉(zhuǎn)換進(jìn)行掃描,因此,整個(gè)程序的掃描時(shí)間較其他程序編制的程序掃描時(shí)間要大大縮短。
功能表圖來(lái)源于佩特利(Petri)網(wǎng),由于它具有圖形表達(dá)方式,能較簡(jiǎn)單和清楚地描述并發(fā)系統(tǒng)和復(fù)雜系統(tǒng)的所有現(xiàn)象,并能對(duì)系統(tǒng)中存有的象死鎖、不等反常現(xiàn)象進(jìn)行分析和建模,在模型的基礎(chǔ)上能直接編程,所以,得到了文泛的應(yīng)用。近幾年推出的可編程控制器和小型集散控制系統(tǒng)中也已提供了采用功能表圖描述語(yǔ)言進(jìn)行編程的軟件。關(guān)于佩特利(Petri)網(wǎng)的一些基本概念,我在以后有機(jī)會(huì)時(shí)再介紹給各位,以有助于對(duì)功能表圖的進(jìn)一步理解。
MK-0IMC標(biāo)準(zhǔn)數(shù)控操作面板,適用于FANUC(法那科)0I加工中心
一、機(jī)床操作面板結(jié)構(gòu)及功能說(shuō)明
機(jī)床操作面板由大小兩塊組成,小面板上安裝有主軸負(fù)載表及控制器電源通斷按鈕,大操作面板位于操作下部,裝有各種按鈕,指示燈及操作部件,以下主要對(duì)人操作面板進(jìn)行說(shuō)明。
二、操作面板說(shuō)明
1.CYCLE START
程序執(zhí)行啟動(dòng)按鈕(帶燈)
自動(dòng)操作方式時(shí),選擇所要執(zhí)行的程序,按下此按鈕自動(dòng)操作開(kāi)始,執(zhí)行自動(dòng)操作執(zhí)行期間,按鈕內(nèi)指示燈點(diǎn)亮。
??2.FEED HOLD進(jìn)給保持按鈕(帶燈)
自動(dòng)執(zhí)行程序期間,按下此按鈕,機(jī)床運(yùn)動(dòng)軸即減速停止。
??3.MODE SELECT方式選擇開(kāi)關(guān),選擇機(jī)床的工作方式
? ?1)EDIT:編輯方式
? ? 2)AUTO/MEM:自動(dòng)方式
? ? 3)MDI:手動(dòng)數(shù)據(jù)輸入方式
? ? 4)JOG:點(diǎn)動(dòng)進(jìn)給方式
? ? 5)HANDLE:手搖脈沖發(fā)生器進(jìn)給方式
? ? 6)RAPID:手動(dòng)快速進(jìn)給方式
? ? ?)ZRN:手動(dòng)返回機(jī)床參考零點(diǎn)方式
? ? 8)DNC:DNC工作方式
? ? 9)TEACH.H:手輪示教方式
??4,F(xiàn)EEDRATE OVERRIDE進(jìn)給速率修調(diào)開(kāi)關(guān)
以給定的F指令進(jìn)給時(shí),可在0—150%的范圍內(nèi)修改進(jìn)給率。JOG方式時(shí),亦可用其改變JOG速率。
??5.BDT程序段跳步功能按鈕(帶燈)
自動(dòng)操作時(shí)此按鈕接通,程序中有“\”的程序段將不執(zhí)行。
??6.SBK單程序段執(zhí)行按鈕(帶燈)
自動(dòng)操作執(zhí)行程序時(shí),每按一下CYCLESTART按鈕,只執(zhí)行一個(gè)程序段。
??7.DRN空運(yùn)行功能按鈕(帶燈)
自動(dòng)或MDI方式時(shí),此按鈕接通,機(jī)床按空運(yùn)行方式執(zhí)行程序。
??8.Z AXIS LOCK Z軸鎖定功能按鈕(帶燈)
自動(dòng)執(zhí)行程序時(shí),此按鈕接通,可禁止Z軸方向的移動(dòng)
??9. MLK機(jī)床鎖定按鈕(帶燈)
自動(dòng),MDI或JOG操作時(shí),此按鈕接通,即禁止所有軸向運(yùn)動(dòng)已(進(jìn)給的軸將減速停止)但位置顯示仍將更新M,S,T功能不受影響。
??10. OPS程序段選擇停功能按鈕(帶燈)
此按鈕接通,所執(zhí)行的程序在遇有M01指令處,自動(dòng)停止執(zhí)行。
??11. E-STOP急停按鈕
機(jī)床操作過(guò)程中,出現(xiàn)緊急情況時(shí)按下此按鈕伺服進(jìn)給及主軸運(yùn)行立即停止,CNC進(jìn)入急停狀態(tài)。
??12,MACHINE RESET機(jī)床復(fù)位按鈕
機(jī)床通電后,釋放急停按鈕,如機(jī)床正常運(yùn)行的條件均以具備,按下此按鈕,強(qiáng)電復(fù)位并接通伺服。
??13.PROGRAM PROTECT程序保護(hù)開(kāi)關(guān)(帶鎖)
此開(kāi)關(guān)處于“0”的位置可保護(hù)內(nèi)存程序及參數(shù)不被修改,需要執(zhí)行存入或修改操作時(shí),此開(kāi)關(guān)應(yīng)置“l”。
??14. TOOL UNCLAMP刀具松放按鈕
手動(dòng)工作方式下,按此按鈕可卸下裝于上軸上的刀柄。
??15.WORK LAMP工作燈開(kāi)關(guān)
??16.RPM OVERRIDE土軸轉(zhuǎn)速修調(diào)開(kāi)關(guān)
可在50-120%的范圍內(nèi)修調(diào)以S指令給定的主軸轉(zhuǎn)速
??17. CW??主軸手動(dòng)正轉(zhuǎn)按鈕(帶燈)
??19.STOP主軸手動(dòng)停止按鈕(帶燈)
機(jī)床處于手動(dòng)工作方式,并已有S指令輸入的條件下,可使用以上
? ? 3只按鈕,主軸進(jìn)行啟,停操作,
??20.COOL ON冷卻泵啟動(dòng)按鈕(帶燈)
??21,COOL OFF冷卻泵停止按鈕(帶燈)
不論處于何種工作方式都可控制冷泵的啟停。
??22. AXIS SELECT手動(dòng)進(jìn)給軸選擇開(kāi)關(guān)
??23. HANDLE MULTIPLIER手輪進(jìn)給倍率開(kāi)關(guān)
用于選擇手輪進(jìn)給的每格位置當(dāng)量。
??24.jOG+點(diǎn)動(dòng)正向按鈕
??25. JOG-點(diǎn)動(dòng)負(fù)向按鈕
點(diǎn)動(dòng)方式下,以上兩只按鈕與軸選擇開(kāi)關(guān)配合可點(diǎn)動(dòng)移動(dòng)各軸,ZRN方式下,JOG+用于相應(yīng)軸回零操作。
??26.MANUAI PELSE CENERTOR手搖脈沖發(fā)生器
手輪工作方式下,與軸選擇開(kāi)關(guān)配合可以手輪移動(dòng)各軸。
??27.發(fā)光二極管指示燈
? ? 1)MACHINE POWER? ? (綠)機(jī)床電源接通指示
? ? 2)MACHINE READY? ? (綠)機(jī)床強(qiáng)電復(fù)位指示
? ? 3)CNC POWER? ? (綠)控制器電源接通指示
? ? 4)CNC ALARM? ? (橙)控制器故障報(bào)警
? ? 5)SPINDLE ALARM? ? (橙)主軸變頻器報(bào)警
? ? 6)LUBE ALARM? ? (橙)潤(rùn)滑泵液面低報(bào)警
? ? 7)AIR ALARM? ? (橙)氣壓低報(bào)警
? ? 8)ATC ALARM? ? (橙)自動(dòng)換刀報(bào)警
? ? 9)X??HOME? ? (紅)X軸機(jī)床回零指示
? ? 10)Y??HOME? ?(紅)Y軸機(jī)床回零指示
? ? 11)Z H09田? ? (紅)Z軸機(jī)床回零指示
? ? 12)HOME? ? (紅)第四軸機(jī)床回零指示
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