3500/61-03-00 BENTLY

BENTLY 3500/61-01-00
BENTLY 3500/61 163179-03
BENTLY 3500/22M 288055-01
BENTLY 3500/20-01-02-00

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Description

存入I/O映象区中的相应的单元内。输入采样结束后,转入用户程序执行和输出刷新阶段。在这两个阶段中,即使输入状态和数据发生变化,I/O映象区中的相应单元的状态和数据也不会改变。因此,如果输入是脉冲信号,则该脉冲信号的宽度必须大于一个扫描周期,才能保证在任何情况下,该输入均能被读入。

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