Patent ID: 7957838

Claim:
A control system for controlling the movements of a plurality of mechanical units, wherein at least two of the mechanical units have been programmed to perform a task, wherein the movements of the mechanical units are coordinated, the control system comprising: an automatic control configured to automatically control the movements of the mechanical units to perform the task in dependence on stored movement instructions for each of the mechanical units, and to execute the movement instructions for at least two of said mechanical units at a same time in order to coordinate the movements of the mechanical units; a manual control configured to manually control the movements of at least one of the mechanical units or a portion of the at least one of the mechanical units based on input from a manually-operated control member; and an indicator configured to indicate whether a mechanical unit, which has been selected to be manually moved based on input from the manually-operated control member, is associated with one of the other mechanical units as a result of the task, and consequently to indicate that movement of the selected mechanical unit will also result in movement of the associated mechanical unit.