| 摘要 |
PURPOSE:To attain fault supervision surely and easily by providing a fault detection accumulated recording means to a supervisory control section to count a fault and returning the content at polling performed periodically. CONSTITUTION:When a fault count input changeover signal 213 of a control command is outputted from a reception changeover control section 213, a synchronous fault signal 215 or 216 of a prescribed system is selected by a switch 202 and inputted to a fault recording counter 201 in a supervisory control section 21 of a remote station. Then the signal is counted for a prescribed time and when a polling from a synchronous station is given, the count is outputted from a fault recording output data from the counter 201 by using a control signal 211 and fed to an LR system transmission/reception section 205 and an LL system transmission/reception section 206 via a data bus 214. Then the data is returned to the synchronous station 1 via the LR and LL system transmission/reception section 205, 206 and access sections 207, 208. Thus, the kind and number of errors at each remote station are counted easily. |
