程序中设置掉电标志位和程序段标志位，实现正常上电后原系统运行状态的恢复。

Procedure sets off power-fail flag and program block flag, for the implementation of the restoration of the original system after normal starting.

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故障去除后，关掉电源开关后再打开，电源即可恢复。

Recycle the power supply switch, and the power supply will restart after the fault removed.

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