| 摘要 |
PURPOSE:To increase the reliability of unit, by detecting the data error after the comparison of the data with the preceding data, to the data input cyclically from a remote monitor control unit. CONSTITUTION:A master station 1 has a CPU2 and transmits the data to a slave station cyclically via a parallel serial converter 3 and modulator 4. On the other hand, the data received at the slave station is demodulated at a demodulator 6 and fed to a serial-parallel converter 7. Further, the data of the converter 7 is fed to a CPU8 and after data error is detected, the data where no error is detected is fed only to the actual unit via a digital output unit 9. Further, by comparing the data with the preceding data, the data error can be detected and the reliability of unit can be increased. |
