| 摘要 |
PURPOSE:To collect a data at a high speed by applying data transmission from each section to be controlled in the order of address sequentially in response to the data collection command from a control section. CONSTITUTION:When the control section 1 sends a data collection start signal to each section Ai to be controlled via a control line 4, the section A1 having the youngest address number returns the state signal via the reply data line 5 at the next frame of the data collection start signal from the control section 1 by the operation of a data transmission discrimination circuit al. The section to be controlled A2 of the next address number to the section A1, by the operation of the data transmission discrimination circuit a2, uses the frame next to the section A2 to return the status signal via the reply data line 5. Similarly, until the data collection is finished while the status signal of the section An is returned, the status signal corresponding to each section Ai is sent to the control section 1 sequentially in the order of address. Since there is no need for the control section 1 to send the address to each section Ai at each time, the data is collected at high speed.
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