A method of transmitting radiofrequency identification interrogation signals is disclosed. This allows a facility equipped with such systems to upgrade overall surveillance capability by overlaying the multi-function networked system over the legacy system and incorporating the legacy system directly into the more comprehensive networked system. The contact is configured to be connected to the conductor of the cable. The offline activity is cached and uploaded when the console connects to the online service. The heat generated inside the catalytic cracking zone is distributed to the entire reactor as the gaseous product flows upward. In a peripheral circuit region, a peripheral circuit contact hole is formed in a silicon oxide film, and another peripheral circuit contact hole is formed in an interlayer insulation film and a silicon oxide film.