描述
1)SELFRESET決定SFCchart在“completed”、“aborted”、“stopped”三中狀態(tài)下的轉(zhuǎn)換方式,僅在手動(dòng)模式下有效。(注意:SFCchart循環(huán)執(zhí)行時(shí)Selfreset不能=1)
·SELFRESET=1,SFCchart在“Completed”、“Aborted”、“Stopped”狀態(tài)下的順控程序執(zhí)行完成之后,SFCchart會(huì)立即自動(dòng)轉(zhuǎn)換為“idle”狀態(tài)。
·SELFRESET=0,“Completed”、“Aborted”、“Stopped”狀態(tài)下的順控程序執(zhí)行完成之后SFC仍然保持在相應(yīng)的狀態(tài),直到SFCchart收到新的觸發(fā)命令。
2)CYCLEXEX決定SFCchart是否循環(huán)執(zhí)行,在自動(dòng)模式下有效。手動(dòng)模式由命令窗口的“CyclicOperation”決定。
·CYCLEXEX=1,SFCchart會(huì)自動(dòng)從“Completed”狀態(tài)轉(zhuǎn)換到“Starting”狀態(tài)。
·CYCLEXEX=0,SFCchart保持“Completed”狀態(tài),由事件觸發(fā)離開(kāi)該狀態(tài)。
3)SELFCOMP決定SFCchart離開(kāi)“Run”狀態(tài)的方式,如下圖1所示,
·SELFCOMP=1,順控程序處理完成后,SFCchart自動(dòng)從“Run”狀態(tài)轉(zhuǎn)換到“Completing”狀態(tài)。順控的最后一步執(zhí)行完成之后執(zhí)行END步,SFCchart的狀態(tài)轉(zhuǎn)入“Completing”狀態(tài)。
·SELFCOMP=0,SFCchart保持在“Run”狀態(tài),并重復(fù)sta
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