此外，暂存器可以访问的1个字节的上限和下限报警触发寄存器。
In addition, the scratchpad provides access to the 1-byte upper and lower alarm trigger registers.
当电压、谐波测量显示值超出设定的上、下限保护值的范围时，控制器报警指示灯亮。
When display value of voltage is out of the scope of upper and lower limit protection value, alarm indication lamp of controller is lighted.
当土壤温度超越上、下限时，系统报警，并进行自动处理。
The system would alarm and process it automatically while the temperature is overrunning the set limits.
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