移位寄存器应该置位或复位，才能产生所要求的序列。
The shift register should be set or cleared to produce the desired sequence.
从动触发器正在进行置位和复位。
该通信程序能读写FX全系列PLC内部各种软设备，强制复位与置位位映象元件。
The communication program can read or write each soft device inside FX series PLC, and allow individual bit images to be forced on or OFF.
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