SIGNAL TRANSMITTER FOR REMOTE SUPERVISORY AND CONTROLLING EQUIPMENT

PURPOSE:To surely generate an equipment control signal on a transmission side and to improve reliability, by qualifying the normality/ abnormality of the transmission processing system of the control signal from the logic of a control under execution bit, an equipment state signal, and an auxiliary code bit. CONSTITUTION:A decision part 16 decides the rightness of the control under execution bit and the auxiliary code bit from the control under execution bit generated from and stored in a control instruction detecting and storing part 7, and the state display bit of said equipment received from a slave station. A display part which displays a decided result informs the normality/abnormality of the generation processing system of the control signal, and displays whether a correct control signal including the correctness/incorrectness of the operation itself of an operator M is obtained or not. The decided result of the decision part 16 prohibits the selecting operation of a selection part 8, in other words, transmission due to the selection of said control signal.