| 摘要 |
<p>A hydraulic excavator 1 comprises a prime mover 14, an excavating device 7, a hydraulic pump 18 rotationally driven by the prime mover, actuators 11, 12, 13 for driving the working device, and control levers 27, 28, 29 for operating control valves 24, 25, 26 for controlling a hydraulic fluid supplied from the hydraulic pump to the actuators. Control units 17, 23, 33, 37 and a display unit 38 are provided on the hydraulic excavator, the control units being associated with the prime mover, the excavating device, the hydraulic pump and the control levers. The control units and the display unit are interconnected via a common communication line 39 to transmit and receive data among them. The control units each include minimum processing means capable of performing computation by using an initial value and executing least necessary processing by itself when no data is transmitted via the communication line. In an electronic control system for a construction machine including a plurality of control units interconnected via a common communication line, therefore, system change including addition, exclusion and replacement of one or more control units can be easily realized. <IMAGE></p> |
