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
5690
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
