A.IN B.OUT C.STATIC D.TEMP
A.WinCC Basic B.WinCC Advanced C.WinCC Professional D.以上都可以
A.全局?jǐn)?shù)據(jù)塊只能進(jìn)行整體性保持性設(shè)定 B.FB的背景數(shù)據(jù)不能進(jìn)行保持性設(shè)定 C.IEC定時器的背景數(shù)據(jù)不能進(jìn)行保持性設(shè)定 D.IEC計數(shù)器的背景數(shù)據(jù)可進(jìn)行保持性設(shè)定