| 摘要 |
PURPOSE:To attain smooth operation of a network system by providing a disconnecting instruction commanding the disconnection of a transmitter from the network system and a connection instruction commanding the connection to the said system to a token. CONSTITUTION:The token is provided with the disconnecting instruction 15 commanding the disconnection of the transmitter 2 from the network system and the connection instruction 13 commanding the connection to the said system. After the transmitter 2 detects the disconnecting instruction in the token addressed to the own transmitter, the said token is transmitted to other transmitters when the token addressed to the own transmitter is received from a communication medium. After the connection instruction in the token is detected, the right of communication is acquired by the reception of the token addressed to the own transmitter from the communication medium so as to attain the data transmission. Thus, a fault (such as noise) caused by the physical cause is avoided and the network system is operated smoothly. |
