ALM黄灯亮：输入信号高于报警高位值(含死区值)时;
ALM红灯亮：输入信号低于报警低位值(含死区值)时亮;
ALAM灯红色、黄色交替闪烁：输入信号故障;
RAL指示灯：输出继电器闭合时亮
2017-03-23
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ALM黄灯亮：输入信号高于报警高位值(含死区值)时;
ALM红灯亮：输入信号低于报警低位值(含死区值)时亮;
ALAM灯红色、黄色交替闪烁：输入信号故障;
RAL指示灯：输出继电器闭合时亮
