| 摘要 |
PURPOSE:To check each transmitter without interrupting the service and to surely and simply operate the system by providing an operating mode signal transmission means and an output control signal transmission means to a central controller. CONSTITUTION:Each of transmitters 3a-3e enters a 1st operating mode when it receives a 1st mode signal addressed to its own transmitter sent from an operating mode signal transmission means 1b in a central controller 1 by transmitter controllers 2a-2e. Then its output is closed by an output application signal from an output control signal transmission means 1a and interrupts with an output interrupt signal. Moreover, each of the transmitters enters a 2nd operating mode where the output is applied by the output interrupt signal and the output is interrupted by the output application signal when a 2nd mode signal is detected and enters a 3rd operating mode where its output is given at all times regardless of the output application signal and the output interrupt signal. Thus, each of the transmitters is checked without interrupting the service of the transmitters in the 2nd or 3rd operating mode and the system is operated simply and surely. |
