Method of managing a system, and computer program product

A non-transitory computer readable storage medium having computer readable instructions stored therein that when executed by a processing circuit performs a management control method for a system, the system including

• a gateway device, a first device connected with the gateway device and a second device, wherein the second device that is connected with the first device and has a greater number of devices intervening before the gateway device than the first device, wherein the management control method comprising
• obtaining by the processing circuit configuration information of the gateway device, configuration information of the first device and configuration information of the second device;
• and
• generating and displaying on a display a connection configuration map based on the configuration information, wherein the connection configuration map includes
• a symbol of the gateway device,
• a symbol of the first device, and
• a symbol of the second device that are displayed with display connections that correspond to actual connections between the gateway device, the first device and the second device, such that
• the symbol of the first device is displayed on the display at a position having a shorter distance in a preset first direction from the symbol of the gateway device than the symbol of the second device, and
• connection interfaces of the gateway device, the first device and the second device are displayed in an identifiable manner.