| 摘要 |
<p>PURPOSE:To perceive even the operation state of a machine based on a reporting content from an annunciator by generating an announcing signal to cause an operator to understand an amount of a remaining operation time of a machine, such as an alarm signal to display a remaining operation time and alarm that a remaining operation time is reduced. CONSTITUTION:An annunciator 5 having a proper announcing part, such as a digital display unit, a display lamp, a buzzer, or a vibrator, is brought by a worker with him. The worker communicates with a control device 9 of a machine by means of antennas 8 and 23 for radio. A signal for announcement by means of which a remaining operation time is displayed and an alarm for reduction of a remaining operation time is made is generated based on a remaining operation time calculated in response to actual operation of a machine. By outputting the generating signal from the annunciator, a remaining operation time can be easily understood even when a worker carries out other various works.</p> |
