本发明中的中央设备11-1系具有：信息读取变换部8-1，当根据于具有管理以以太网(注册商标)协定为基准的车辆信息的列车信息管理设备的编制B的合并链接车辆所装载的电性链接器16-1而得的接点信息，检测到具有以附加资源电脑网络协定为基准而管理车辆信息的列车信息管理设备的编制A合并链接于编制B时，将来自编制A的车辆信息读取变换为以以太网(注册商标)协定为基准的车辆信息而朝编制B输出，且将来自编制B的车辆信息读取变换为以附加资源电脑网络协定为基准的车辆信息而朝编制A输出。

A central apparatus 11-1 according to the present invention includes an information reading and converting unit 8-1 that converts vehicle information of a train A into vehicle information based on Ethernet protocol and outputs the vehicle information based on Ethernet protocol to a train B and converts vehicle information of the train B into vehicle information based on Appended Resource Computer Network protocol and outputs the vehicle information based on Appended Resource Computer Network protocol to the train A when the connection of train A and train B is detected, and connection information is obtained from an electrical connector 16-1 carried on the connected vehicles of the train B, wherein the train A has a train information management device that manages vehicle information based on Appended Resource Computer Network protocol, and the train B has a train information management device that manages vehicle information based on Ethernet protocol.