| 摘要 |
PURPOSE:To attain a highly economical remote supervisory and control system by switching the same control transmission part for general-purpose applications. CONSTITUTION:A remote supervisory and control device is provided with a control switch part 3 which switches and delivers input parts 1 and 2 of the 1st and 2nd control information CS1 and CS2, a parallel/series converting part 4 for signals, and a modulating part 5 which modulates with deflection the frequency and delivers it to a transmission line 6. When the information CS1 is supplied to the part 4 from the part 1 via the part 3, the part 4 sends back the address signal ADR of the information CS1. Thus the part 3 turns off the gate sent from the part 2 to transmit only the information CS1 to the line 6. |
