Patent ID: 6530721
Filing Date: 2003-03-11
Classification: E01C

Abstract:
A method of setup for a control system for a machine having a tool with hydraulically moveable ends, the elevational positions of the ends of the tool and the orientation of the tool along its length from one end to the other being controlled to be on grade during operation in relation to a reference detected by elevation receivers attached to the ends of the tool, comprising the steps of:(a) selecting the on grade elevational position of the first end of the tool with respect to the reference; (b) moving the first end of the tool to the desired elevational position with the elevation receiver at the first end detecting the reference; (c) selecting the on grade orientation of the tool along its length from one end to the other; (d) moving the second end of the tool until the on grade orientation of the tool along its length is sensed by the control system; (e) detecting the reference with the elevation receiver at the second end of the tool; and (f) storing the detected positions of the reference at the first and second ends of the tool as on grade positions.