方法的返回值类型是 BOOL .该值不由系统评估，但不 [...] _Init : BOOL VAR_INPUT bInitRetains : BOOL; // TRUE: the

END_VAR BOOL_TO

to type 'BOOL' of [...] _A : STRUCT xA: BOOL; i [...] %MX0.1 : BOOL; x

_PRG.fbDoItNow.XLOCINPUT AT %I*: BOOL [...] %I* : BOOL := TRUE [...] Loop := 0 TO GVL

_xVar AT %QX0.0 : BOOL [...] different to that in the [...] test_var_INT; // notation different to

IsDuringTheTime: BOOL; date [...] IsDuringTheTime: BOOL; ldate [...] _IF lwValue := LDATE_TO

PUBLIC DoIt : BOOL VAR [...] TO uiN DO m

简单数据类型 ( BOOL, BYTE, WORD/INT

_VAR // Assigs 5 to aiPoint i [...] _INPUT xStart : BOOL

的数据类型： BOOL | BYTE | DATE [...] ErrorOccured : BOOL; END_VAR VAR [...] ErrorOccured : BOOL; END_VAR VAR