Patent ID: 7741973

Claim:
A drive control device, comprising: a driving circuit that drives a driving source; a condition detector that detects the condition of at least one of the driving source and the driving circuit to output a condition signal thereof; a controller that controls the driving circuit based on the condition signal; an alarm detector that detects an occurrence of an alarm based on the condition signal; an alarm code generator that analyzes the alarm detected by the alarm detector to generate an alarm code representing a natural number of one or more; and an alarm display that displays the alarm code generated by the alarm code generator with a lighting pattern of a lighting array, the lighting array comprising a plurality of lighting sections, each lighting section corresponding to one digit of the natural number of the alarm code, wherein after the lighting array is lit with a lighting pattern that indicates the occurrence of the alarm, the lighting sections are lit with another lighting pattern corresponding to the alarm code to inform the alarm code, all of the lighting sections corresponding to the digits of the alarm code are simultaneously lit when the occurrence of the alarm is indicated, and each lighting section flickers a number of times indicating the value of the corresponding digit in descending order from a higher order digit to a lower order digit of the alarm code to inform the alarm code.