| 摘要 |
PURPOSE:To decrease the number of status lines by frequency-dividing the rectangular wave sent from a control part corresponding to the self-address by respective controlled parts and sending through the common status line to the control part as a status signal. CONSTITUTION:A control part 1 sends a rectangular wave f0 through a rectangular wave output line 6 and sends the address information through an address line 2. A controlled part Ax to have the same address as the sent address information out of controlled parts A1-An frequency-divides a rectangular wave signal f0 by the frequency-dividing ratio corresponding to the self-station address, and sends the frequency-divides rectangular wave signal (frequency-divided rectangular wave signal) through a status line 5 to the control part 1. The controlled part, which is not selected, is not frequency-divided and does not send the frequency-divided rectangular wave signal. |
