| 摘要 |
PURPOSE:To attain simultaneous control of terminal equipments with a multiple address data by providing the 1st and 2nd changeover means so as to set whether or not the multiple address data is received, whether or not the operation of a terminal equipment is started or whether or not the preceding state is maintained. CONSTITUTION:Suppose that a multiple address data packet is sent to a transmission line 3 via a transmission means 2 of a communication equipment 1 from a master equipment. Then a data is demodulated by a demodulation means 4 of each slave communication equipment and inputted to a logical operation means 5. The logical operation means 5 discriminates whether or not the data packet is a multiple address data and when the packet is the multiple address data, the state of the 1st changeover means 6 depending whether or not the multiple address data is received is discriminated and when the reception is enabled, the data is neglected. When the reception is enabled, the state of the 2nd changeover means 7 corresponding to the content of the multiple address data is discriminated so as to apply identification whether the operation of the terminal equipment is started or stopped or maintained as the preceding state and the operation start/stop of the terminal equipment 8 is applied by driving a control means 9 connecting the terminal equipment 8 and the communication equipment 1 when the operation is started or stopped.
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