The present invention enables an apparatus or the like, which does not respond to a communication using a superposed signal, to be used in a system using the superposed signal. This control program, which is for a terminal device connectable to a signal processing device through a communication cable, includes: first identification information acquisition steps for acquiring, from the signal processing device, first identification information for identifying the signal processing device in the terminal device; second identification information acquisition steps for acquiring, through an input part of the terminal device, second identification information for identifying an electric apparatus that is electrically connected to the signal processing device and operates an operation element; generation steps for generating association information for associating the first identification information with the second identification information; and output steps for outputting the association information so that the association information is received by the information processing device.