1C31194G03
1C31194G03
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廈門莫格電氣自動化有限公司
:祖巧麗
:
PLC一般采用硬件定時中斷,軟件計數(shù)的方法來實(shí)現(xiàn)定時邏輯功能,定時器一般包括:
定時條件:控制定時器操作。
定時語句:所使用的定時器,給出定時設(shè)定值。
定時器的當(dāng)前值:記錄定時時間。
定時繼電器:定時器達(dá)到設(shè)定的值時為“1“(0N)狀態(tài),未開始定時或定時未達(dá)到設(shè)定值時為“0”(0FF)狀態(tài)。
其邏輯功能如下表所示:
定時器:T
a.功能:該元件是定時用的,范圍為0.001~32.767(1ms定時器)秒、0.01~327.67秒(10ms定時器)、0.1~3276.7秒(100ms定時器)。元件范圍按十進(jìn)制分配如下:
T246~T249:1ms定時器
T200~T245:10ms定時器
T0~T199:100 ms定時器
b.舉例:
①梯形圖:
②程序清單
LD X000
OUT T0 K123
LD T0
OUT y000
END
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