Abstract: A modular conveyor and conveyor system for transporting articles thereon. The functioning of the entire system is integrated by a programmable logic controller (PLC) mounted on each conveyor unit. Where PLCs on adjacently connected conveyors communicate with one another. Each conveyor has sensing devices for communicating with the PLC by indicating the absence or presence of articles located at specific zones on the conveyor. In response to the sensing input, the PLC will send and receive articles to and from adjoining units. All of the movement of articles on the conveyor system are preprogrammed into the PLC, however manual over-ride is provided for. The conveyors have rollers for moving articles along the length of the units. Belts are located at one end for moving articles transverse to the roller movement. Roller-ball racks are used for rotational movement of articles on the unit. The PLC controls the activation of the rollers, belts, and racks of the conveyor in response to the sensor input information.