| 摘要 |
PURPOSE:To enable a control station to confirm that a selection signal is transmitted without fail to a station to be controlled and then execute the control by so constituting the titled system that the station to be controlled returns the selection signal that has been returned from the control station and that the control station executes verifying the returned signal with the one originally transmitted. CONSTITUTION:The selection signal is encoded by an encoder 1, then undergoes a control input device 2 and is transformed into a serial signal by a parallel-serial converter 3A. The signal is transmitted to a serial-parallel converter 5A of the station to be controlled through a transmission line 4A, where it is returned to its original parallel signal form, and is inputted to an encoder 7 and a digital input device 10 via a control output device 6. A selection- completion detector circuit 12 verifies the coincidence between the selection signal returned from the station to be controlled and inputted through a digital output device 11 and that supplied from the device 2. In case when both the result of the said detection and the verification result signal from the station to be controlled inputted through the device 11 are decided to be 'fair', the circuit 12 outputs a detection result to show a correct selection to the external. After confirming that the selection signal for the equipment to be controlled has been transmitted correctly, the control station outputs real control-direction signals. |
