机床工作时间计时器，RB4为电主轴运转传感开关输入，RB5为电池电压监测，RB6为清除按键输入； 16c710/711 液晶显示模块名称LCM103-Working time machine timer, RB4 for electric spindle operation switch input sensing, RB5 for battery voltage monitoring, RB6 to eliminate keystrokes 16c710/711 LCD mo