| 摘要 |
A communication system according to an embodiment of the invention includes: a plurality of communication nodes; and a common bus connected with the plurality of communication nodes, wherein the plurality of communication nodes individually checks a use state of the bus to allow/disallow transmission, and at least one of the plurality of communication nodes includes: a storage circuit storing data representing whether or not a frame follows a first frame sent to the bus; and a control circuit determining, when outputting a second frame after the completion of transmission of the first frame, whether or not to output the second frame to the bus with reference to the data stored in the storage circuit.
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