ELEVATOR COMMUNICATION CONTROLLER AND COMMUNICATION CONTROL METHOD

摘要

A communications control system for elevators having a plurality of control units including at least respective car control units and elevator hall registration control units, each of the plurality of control units having a node, the plurality of nodes being connected to each other via a network, and each of the node having a management table establishing correspondence between a node number and a network address, the elevator communications control system comprises: a node acting as a master when, in the case where a first network address corresponding to the node number of this node is, upon referring to the management table, a specific address in the management table, this node sends to all other nodes a broadcast communication to notify that this node is a temporary master having the first network address added thereto and receives from another temporary master a broadcast communication for notifying that this other node is the temporary master having a second network address corresponding to the node number of this other temporary master added thereto, if the first network address and the second network address conform to specific conditions; and a node acting as a slave when, in a case where the network address corresponding to the node number of this node is not a specific address in the management table or the first network address corresponding to the node number of this node is a specific address in the management table upon referring to the management table, this node sends to all other nodes a broadcast communication to notify that this node is a temporary master having the first network address added thereto and receives from another temporary master a broadcast communication for notifying that this other node is the temporary master having a second network address corresponding to the node number of this other temporary master added thereto, if the first network address and the second network address do not conform to specific conditions.