Robot interference prevention control device

Preventing the interference of a robot control apparatus provided between which are read in advance a teaching program of each robot, after n interpolation period from the current interpolation period, the output is determined for each robot predetermined stop position when the stop command detecting whether interference is to occur at a predetermined stop position of each robot. Prevent interference control means determines if the robot and other robot interference to occur, then the current interpolation cycle of the output stop command. Accordingly, before the interference occurs to n interpolation cycle output stop command, thereby preventing the interference.