PROBLEM TO BE SOLVED: To compact the whole display section by normally displaying only information required for operation and displaying only alarm contents at the abnormal time in a display section constituted in a single display area. ;SOLUTION: When an operator operates a machine at the normal time, a display section 20 displays information such as the remaining amount of fuel, the quantity of oil, the water temperature, etc., required for the working of the machine by the operator by bar graphic display together with a symbol mark thereof. Only information needed for machine operation is displayed on the display section 20 at the normal time. When the requirement of the display of any alarm contents is transmitted from the controller side under the state, the display section 20 only displays the alarm contents by characters, graphics, etc.;COPYRIGHT: (C)1997,JPO
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