Abstract: A system for power distribution and communication over a two-wire network comprises a control unit (dedicated or distributed) configured to receive power from the two-wire network and provided with a transceiver circuitry connected to the two-wire network, a power converter unit having a power converter which converts incoming voltage to a DC-voltage of less than 50 V and feeds the DC-voltage to the two-wire network, and a power fuse unit with a power fuse identity connected between the power converter and the two-wire network. The power fuse unit forwards the DC-voltage to the two-wire network and comprises a transceiver circuitry connected to the two-wire network and a fuse. The system monitors an amount of power consumed in the network and activates a power switch in the power fuse unit when the amount of power consumed in the two-wire network exceeds predetermined limits.

Abstract: The present invention relates to a method for controlling communication in a network comprising a plurality of interconnected network nodes, each network node comprises a processor and a memory in which a unique identity is stored; a sensor having at least two states; and an actuator performing functions in response to received signals. The method forming a relationship between a primary network node to which a first sensor is connected and at least one secondary network node to which one or more actuators are connected to establish a link there between. The primary and secondary network nodes are one of the plurality of interconnected network nodes; storing information of the link in the memory of each secondary network node; and controlling the one or more actuators.

Abstract: The present invention relates to a system for power distribution and communication over a two-wire network 21; 51. The system 20; 30; 50; 70 comprises: a control unit 22; CU (dedicated or distributed) configured to receive power from said two-wire network and provided with a transceiver circuitry connected to the two-wire network, a power converter unit 23; 31; 71 having a power converter 24 converts incoming voltage to a DC-voltage of less than 50 V and feeds the DC-voltage to the two-wire network, and a power fuse unit 25; 72 with a power fuse identity connected between the power converter 24 and the two-wire network 21; 51. The power fuse unit forwards the DC-voltage to the two-wire network and comprises: a transceiver circuitry connected to the two-wire network, and a fuse.