To prevent the practice of input/output control by wrong operation by arranging a means for alloting a control indicating function of an input/ output control means and a storage means for storing it, in keys of a teaching means for teaching an operation program by communicating data to a controller for controlling operation of a robot.
A robot controller 1 is provided with a signal input/output terminal (I/O) 4, the control part 2 and a RAM 3, and a teach pendant 6 is provided with the key part 11-a, the control part 7, the communication control part 10 and the image screen display part 9. In controlling input/output, an operator stores an input/output control sequence in the RAM 3 by preoperating the teach pendant 6 to allot the input/output control sequence to respective keys of a CTRL key 11. Next, in teaching an operation program, when the operator pushes either of the CTRL key 11, the control part 2 receives the notice, selects the input/output control sequence to be practiced, and controls the I/O 4 according to the content of the selected input/output control sequence.
SHIMOGAMA SHIGERU
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