1. A control system for a robot having a hand and a hand alignment function for automatically adjusting a present position and pose of the hand to a desired position and pose without first moving the hand of the robot, said control system comprising: a drive means for driving said hand; a present-position data memory means for storing data corresponding to the present position of the hand; a present-pose data memory means for storing data corresponding to the present pose of the hand; a pose memory means for storing data corresponding to the desired pose; a pose data modifying means for modifying a format of the data stored in said pose memory means to coincide with a format of the data stored in said present-pose data memory means; a pose memory command means for instructing said pose data modifying means to modify the format of the data stored in said pose memory means to coincide with the format of the data stored in said present-pose data memory means; and a hand-alignment movement-amount computing means for computing data corresponding to the desired position and pose, and for outputting the computed data corresponding to the desired position and pose to said drive means.