Cable distribution and support equipment (56) for a sensor (14), in a robot system including a robot (10) and the sensor attached to the wrist region of the robot, to lay a sensor cable (64a) connected to the sensor in the robot. The cable distribution and support equipment includes a sensor cable (64a) comprised of a signal cable (68) and a power cable (70), an umbilical member (64b-64e) comprised of at least one of a control cable of a drive motor of a wrist axis of a robot, a control cable of hand attached to the robot and a pneumatic-mechanism driving compressed-air hose; and a protective tube (60) through which the sensor cable and the umbilical member are passed. The protective tube (60) is configured to be laid through a cavity formed in a hollow forearm (32) of the robot. The signal cable (68) may be comprised of an image signal cable and a control signal cable, provided for a visual sensor. Alternatively, the signal cable may be comprised of a detection-data transmission signal cable of strain gauge provided for a force sensor.