| 摘要 |
PROBLEM TO BE SOLVED: To enable broadcast communication for which the specification of a transmission source or a transmission destination of transmitting/receiving data can be changed freely without lowering a frame transfer speed. SOLUTION: A frame includes respective fields of: a command sort for specifying the sorts of a token frame, a common write command frame and an individual write command frame; a transmission source slot number for individually specifying a transmission source terminal apparatus for transmitting data; a transmission destination slot number for individually specifying a transmission destination terminal apparatus for receiving data; and transmitting/receiving data. When each of terminal apparatuses 1 to 6 receives a common write command and the common write command is included in a frame from a terminal apparatus, the reception from which is permitted by the own terminal apparatus, the terminal apparatus performs reception processing of transmitting/receiving data of the frame. When receiving an individual write command and the own terminal apparatus is a terminal apparatus specified by the individual write command as a destination, the terminal apparatus performs reception processing of transmitting/receiving data of the frame therefor. COPYRIGHT: (C)2010,JPO&INPIT |
