DATA TRANSFER METHOD AND DATA TRANSFER SYSTEM

摘要

A bus system in which a node identifier is allocated to each node, wherein when data files are transmitted from a transmission node (1) to a reception node (2), a control node (3) issues to the node (1) a command including the identifier of the node (2) and the value of the field representing the number of data files to be transmitted to carry out the data transfer, the node (1) ends the data transfer by instructing, if the number of data files is one or more, the node (2) to end the transfer when the transmission of the data files the number of which is specified by the field is ended, and the node (1) continues the transmission of the data file if the value of the field is zero thereby to adopt automatic shut-off after the data transfer under the leadership of the data transmission node, whereby issuance of commands is limited to a requisite minimum, and efficient processing is achieved.