A communication apparatus for robots is provided. A controller and drivers controlling each joint are serially connected to a serial transmission line. A final driver positioned at the last stage, among the drivers, is connected to an I/O module connected to a driver of a hand. When control signals for each driver and the driver of the hand are serially transmitted from the controller to the serial transmission line, the driver connected to the I/O module receives a control signal for the driver itself and a control signal for the driver of the hand, among the serially transmitted control signals, and transmits the control signal for the driver of the hand to the I/O module.
Communication apparatus for robots