METSO IOP114

METSO IOP114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(shí)間（約 10ms ）。


 （ 2 ） 程序處理
  METSO IOP114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(dòng)作由輸出映像寄存器的內(nèi)容決定。


 （ 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(dòng)作有一個(gè)響應(yīng)時(shí)間，METSO IOP114即要有一個(gè)延遲才動(dòng)作。

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Before the program is executed, the on / off status of all b terminals of the programmable controller is read into the b image register. During program execution, even if the b state changes, the contents of the b image register remain unchanged. This change is not read in until the b processing phase of the next scan cycle. In addition, the b contact changes from on → off or from off → on to the determined state, and the b filter has a response delay time (about 10ms).

Corresponding to the instructions stored in the user program memory, read out the on / off state of the relevant soft components from the b image register and the image registers of other soft components, start the sequential operation from step 0, and each result is written into the relevant image register. Therefore, the content of the image register of each soft component (except x) is constantly changing with the execution of the program.The b of the METSO IOP114 contact of the output relay is determined by the contents of the output image register.After all instructions are executed, the on / off state of the output image register is transmitted to the output latch register to become the actual output of the programmable controller.The METSO IOP114 output contact of the programmable controller has a response time to the b of the output soft element, that is, it needs a delay to act.

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