To easily and exactly recognize the status of plural operating programs by providing a means displaying the line drawing of the operating locus of a robot operating program, a program list and the program operation of a robot on the display screen of a program display panel.

This controller is provided with a main body controller 1 controlling a robot main body and a program display panel 2 displaying a robot operating program. The program display panel 2 has an indicator 10, a transparent switch 11 and a selection switch 12. The indicator 10 is connected with an indicator control circuit 7 via a bus line 16, the transparent switch 11 is connected with a transparent switch signal input circuit 8 via a bus line 17 and the selection switch 12 is connected with a selection switch signal input circuit 9 via a bus line 19. Plural operating programs can be displayed together on the display screen of the program display panel 2 or the instantaneous selection of each operating program is made possible.