ABB SDCS-CON2B-2A驱动板

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中文资料：

ABB SDCS-CON2B-2A扫描模式扫描模式确定CPU在扫描期间执行的任务的优先级，并定义分配给每个任务的时间。可以修改的参数会随着扫描模式的选择而变化。ABB SDCS-CON2B-2A扫描的控制器通信窗口、背板通信窗口和背景窗口阶段可以基于PLC扫描模式以各种模式运行。

ABB SDCS-CON2B-2A 选择：▪ 正常模式：PLC扫描执行得尽可能快。整个PLC扫描时间取决于逻辑程序和窗口中正在处理的请求，并且等于ABB SDCS-CON2B-2A 执行程序中的逻辑所需的时间加上相应的窗口计时器值。窗口在没有更多任务要完成时终止。这是默认值。

恒定窗口模式：每个窗口都以“运行到完成”模式运行。PLC在三个窗口之间交替，时间等于为窗口计时器参数设置的值。整个PLC扫描时间等于执行逻辑程序所需的时间加上窗口计时器的值。这个时间可能由于程序逻辑执行中的扫描到扫描的差异而变化。ABB SDCS-CON2B-2A

英文资料：

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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