| 摘要 |
<p>A hydraulic shovel (1), which is provided with a prime mover (14), an excavation work device (7), a hydraulic pump (18) driven for rotation by the prime mover, actuators (11, 12, 13) for driving the work device and operating levers (27, 28, 29) for operating control valves (24, 25, 26) for controlling a pressure oil supplied from the hydraulic pump to the actuators, is further provided with control devices (17, 23, 33, 37) used for the prime mover, the work device, the hydraulic pump and operating levers and a display unit (38), the control devices and the display unit being interconnected via a common communication line (39) for transmitting and receiving data. Each control device has a minimum processing means which performs operation using an initial value when no transmitted data from the communication line is available and can by itself execute a minimum required processing, thereby making it possible for a construction machine electronic control system, in which a plurality of control devices are interconnected via the common communication line, to easily change a system including addition or reduction and replacement of control devices.</p> |
