A support medium is capable of being read by a numerical control system of a bending machine. The RFID tag includes tag memory and an antenna, and the RFID tag is attached to the computer system. However, IO devices control access between the servers and the devices that control access to the data, so that the access requests from the servers are uniformly routed to the preferred array controllers independently of the transfer paths through which the servers issue the access requests. Said data line consists of two wires which are guided in a parallel manner relative to each other. The second electrode structure is disposed within the second zone. A microcontroller receives a control signal from the light detecting apparatus, and an adjustable sun visor receives a darkening control signal from the microcontroller.