Abstract: A cmmunications control system for elevators having control units including at least respective car control units and elevator hall registration control units, each of the control units having a node, the nodes being connected to each other via a network, and each of the nodes having a management table establishing correspondence between node number and network address.

Abstract: A communications control system for elevators with control units inter-connected via a network and each control unit receives its own logical destination from an external location. The elevator communications control system includes a first control unit for detecting an initialized state of the network and operating as a network master node governing synchronization control among the control units when the first control unit is the first to send out, to the network, a network master node candidate request having a logical destination of the first control unit attached; and a second control unit for operating as a sub-node obeying the network master node when the initialized state of the network is not detected.

Abstract: A communication system includes a CPU for controlling internal operations; a management table storage portion for storing a management table referred to for communication control; an intrinsic identification number setting portion for setting a number for identifying respective communication devices; a network interface connected to a network connecting the communication devices and controlled by the CPU; and at least one interface having a hall transmission line interface connected to the hall transmission line, a respective cabin controller interface connected to a corresponding cabin controller, a group management controller interface connected to the group management controller, and a transmission line expansion interface connected to an expansion transmission line, other than the hall transmission line, wherein the interface is controlled by the CPU.