Centralized management unit and management system of facility equipment

A centralized management unit of facility equipment, which obtains management data by being connected to at least one piece of facility equipment to be managed and transmits the data to a monitoring terminal via a connection intermediating device, comprising:

• an input-side interface connected to said facility equipment to be managed;
• an output-side interface for outputting said management data of said facility equipment and for receiving information transmitted from said monitoring terminal;
• a storage section for storing a control program of said facility equipment;
• and
• an arithmetic processing section for controlling said facility equipment in accordance with an instruction of said control program;
• wherein
• said storage section stores a first transmission program corresponding to said input-side interface and a second transmission program corresponding to an interface of said connection intermediating device;
• and
• said arithmetic processing section obtains said management data from said facility equipment via said input-side interface in accordance with an instruction of said first transmission program and outputs said management data to said output-side interface in a mode corresponding to the interface of said connection intermediating device in accordance with the instruction of said second transmission program.