| 摘要 |
PURPOSE:To facilitate maintenance and to improve economical efficiency, by a method wherein a subcontroller to receive a signal from an input control part and process the input signal is connected to a main controller to support the subcontroller and control an electric hydraulic converting part. CONSTITUTION:Signals from joy sticks 1A and 1B on both sides and running pedals 1C and 1D on both sides are received by a subcontroller 4A incorporated in an input control part 1 to process input signals. The subcontroller 4A is connected to a main controller 4B through bidirectional serial communication 8, and signals from a sensor 2 built in a machine body and a console 3 are inputted. Given computation is effected to control an electric hydraulic converting part 5. This constitution eliminates an expansive microcomputer, enables standardization of the subcontroller 4A, and permits local limit of an influence exercised on the whole during failure in operation. |
