Network communication system for uninterruptable power supply and method for dividing controller group for performing communication to control operating status of load device of uninterruptible power supply for each uninterruptible power supply

A network communication system for an uninterruptible power supply comprising:

• UPS member controllers for controlling operating status of load devices of said uninterruptible power supply;
• a UPS group controller for generating control data for said UPS member controllers to control operating status of said load devices according to power supply condition of said uninterruptible power supply;
• and
• a network in which said UPS member controllers and said UPS group controller are connected;
• wherein said UPS group controller includes:
• a first protocol communication means for executing data communication through said network according to a predetermined communication protocol;
• a generating means for generating said control data according to power supply condition of said uninterruptible power supply;
• and an adding means for adding identification information specific to said UPS member controllers to said control data;
• and said UPS group controller transmits said control data, to which said identification information is added, as communication data to said network by using said first protocol communication means;
• and
• said UPS member controllers include:
• a second protocol communication means for executing data communication through said network to/from said first protocol communication means according to said communication protocol;
• and a selecting means for selecting said control data, to which their identification information is added, out of communication data that said second protocol communication means receives;
• and said UPS member controllers control operating status of said load devices according to said selected control data.

A method for grouping controllers by uninterruptible power supply in a network communication system in which control data are transmitted from UPS group controllers corresponding to respective uninterruptible power supplies to UPS member controllers corresponding to respective load devices of said uninterruptible power supplies through a common network for controlling operating status of each of said load devices according to power supply condition of each of said uninterruptible power supplies, characterized by;

• connecting one group of said controllers in said network and making each of said controllers communicate within said group to be issued identification information to be transmitted with control data;
• repeating for each of controllers of all groups to be connected in said network and issued identification information different from one another;
• and then
• connecting all of said controllers in said network.