1336-BDB-SP39D
可編程控制器的工作過程分以下三個階段:
( 1 ) 輸入處理
程序執(zhí)行前,可編程控制器的全部輸入端子的通/斷狀態(tài)讀入輸入映像寄存器。在程序執(zhí)行中,即使輸入狀態(tài)變化,輸入映像寄存器的內(nèi)容也不變。直到下一掃描周期的輸入處理階段才讀入這變化。另外,輸入觸點(diǎn)從通( ON )→斷( OFF )或從斷( OFF )→通( ON )變化到處于確定狀態(tài)止,輸入濾波器還有一響應(yīng)延遲時間(約 10ms )。
1336-BDB-SP39D
( 2 ) 程序處理
對應(yīng)用戶程序存儲器所存的指令,從輸入映像寄存器和其它軟元件的映像寄存器中將有關(guān)軟元件的通/斷狀態(tài)讀出,從 0 步開始順序運(yùn)算,每次結(jié)果都寫入有關(guān)的映像寄存器,因此,各軟元件( X 除外)的映像寄存器的內(nèi)容隨著程序的執(zhí)行在不斷變化。
輸出繼電器的內(nèi)部觸點(diǎn)的動作由輸出映像寄存器的內(nèi)容決定。
1336-BDB-SP39D
( 3 )輸出處理
全部指令執(zhí)行完畢,將輸出映象寄存器的通/斷狀態(tài)向輸出鎖存寄存器傳送,成為可編程控制器的實(shí)際輸出。
可編程控制器的外部輸出觸點(diǎn)對輸出軟元件的動作有一個響應(yīng)時間,即要有一個延遲才動作。
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1756-CNB/D 4
1756-IB16/A 2
P0911PV 3
1784-PCC 1
1756-L55M22/A 1
TRICONEX 8312 2
1756-DNB/A 3
140NOM21100 3
IC693BEM331 2
MVI56-PDPS 1
140NOE77101 2
1761-NET-DNI 1
1769-OB16P 4
1757-SRM 1
1756-CNBR/D 1
1203-GU6 1
1756-L61 1
IMASI23 1
140XTS00200 7
1756-TBNH 13
1756-IF16/A 1
1756-HSC/B 2
1606-XLS480E 1
1756-IB32/B 7
1756-OB32/A 4
1756-L62/B 1
1794-ACN15 1
DNBT P0971WV-OF 4
DNBT P0971WV-OG 1
140CPS11420 3
1756-TBCH 5
1756-TBSH 2
1756-CFM/A 8
1756-OW16I/A 3
1756-PB75/B 1
1756-PA75 1
1756-A17 1
1756-L55M12 1
1756-IF8 2
1756-OF8 2
1746-NI8 3
1747-L552/B 1
SST-PB3-CLX 1
SST-PB3-PCU 2
1756SC-IF8U 1
1756-ENBT 1
IC697MDL653H 1
IC697CPU780H 1
IC697PWR710M 2
IC697MDL740F 1
IC697BEM713
IC697BEM731 1
TRICONEX 3511 1
TRICONEX 3700A 1
TRICONEX 3503E 1
TRICONEX 3604E 1
TRICONEX 3805E 1
TRICONEX 4351B 1
TRICONEX 3008 1
TRICONEX 3806E 1
TRICONEX 9674-810
TRICONEX 9563-810
TRICONEX 9853-610
TRICONEX 9753-110
TRICONEX 9771-210
TRICONEX 9662-610
MVI56-PDPMV1 1
PTQ-PDPMV1 1
1756-DHRIO 2
1746-OB32 1
1746-NIO4V 1
1746-NI4 1
1746-IV32
1746-OV32 1
1747-L532 1
1756-OF6VI 1
1756-IV32
1756-IF6I 3
1756-IF4FXOF2F 1
1756-L63/B 1
1769-L32C 1
1747-ASB 2
1747-L553 1
1747-L542 1
1756-OF4 1
1794-ASB 6
1756-EN2T 2
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