Robot control apparatus and robot system

A robot control apparatus for controlling one or more of a plurality of pieces of robots simultaneously based on a robot program, comprising:

• a unit registration portion where multiple units are registered by an operator, with each of said units being a combination of one or more of the plurality of pieces of robots,
• a task registration portion where multiple tasks are registered by the operator, with each of said tasks being assigned to each of the units, and
• a graphics language processing portion for forming the robot program as a graphical program for each of the tasks,
• wherein:
• the graphical program is displayed as a two-dimensional matrix on a display member of a robot instruction apparatus connected to the robot control apparatus,
• sequence numbers and the multiple tasks are displayed on the matrix in a perpendicular direction to each other,
• a robot in the unit assigned to one of the tasks operates in accordance with a program assigned to the one task,
• the program assigned to the one task is displayed in the matrix at the intersection of one of the sequence numbers and the one task,
• the operator performs registration by operating the robot instruction apparatus, and
• the program assigned to the one task is selected from a plurality of programs assignable to the one task, each of the plurality of programs including a distinct set of instructions corresponding to distinct combinations of the plurality of pieces of robots.