ABB SDCS-CON2B-2A驅動(dòng)板

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中文資料：

ABB SDCS-CON2B-2A掃描模式掃描模式確定CPU在掃描期間執行的任務(wù)的優(yōu)先級，并定義分配給每個(gè)任務(wù)的時(shí)間?？梢孕薷牡膮禃?huì )隨著(zhù)掃描模式的選擇而變化。ABB SDCS-CON2B-2A掃描的控制器通信窗口、背板通信窗口和背景窗口階段可以基于PLC掃描模式以各種模式運行。

ABB SDCS-CON2B-2A 選擇：? 正常模式：PLC掃描執行得盡可能快。整個(gè)PLC掃描時(shí)間取決于邏輯程序和窗口中正在處理的請求，并且等于A(yíng)BB SDCS-CON2B-2A 執行程序中的邏輯所需的時(shí)間加上相應的窗口計時(shí)器值。窗口在沒(méi)有更多任務(wù)要完成時(shí)終止。這是默認值。

恒定窗口模式：每個(gè)窗口都以“運行到完成”模式運行。PLC在三個(gè)窗口之間交替，時(shí)間等于為窗口計時(shí)器參數設置的值。整個(gè)PLC掃描時(shí)間等于執行邏輯程序所需的時(shí)間加上窗口計時(shí)器的值。這個(gè)時(shí)間可能由于程序邏輯執行中的掃描到掃描的差異而變化。ABB SDCS-CON2B-2A

英文資料：

ABB SDCS-CON2B-2ASweep Mode The sweep mode determines the priority of tasks the CPU performs during the sweep and defines how much time is allotted to each task. The parameters that can be modified vary depending on the selection for sweep mode. The Controller Communications Window, Backplane Communications Window, and Background Window phases of the PLC sweep can be run in various modes, based on the PLC sweep mode.ABB SDCS-CON2B-2A

ABB SDCS-CON2B-2AChoices: ? Normal mode: The PLC sweep executes as quickly as possible. The overall PLC sweep time depends on the logic program and the requests being processed in the windows and is equal to the time required to execute the logic in the program plus the respective window timer values. The window terminates when it has no more tasks to complete. This is the default value.ABB SDCS-CON2B-2A

Constant Window mode: Each window operates in a Run-to-Completion mode. The PLC alternates among three windows for a time equal to the value set for the window timer parameter. The overall PLC sweep time is equal to the time required to execute the logic program plus the value of the window timer. This time may vary due to sweep-to-sweep differences in the execution of the program logic.ABB SDCS-CON2B-2A

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