| 摘要 |
PURPOSE:To accurately detect abnormality without influencing to another lines in normal by sending a signal processing processor discriminating information to a main exchange processing processor when the abnormality is detected in only one out of external supervisory equipments in the exchange system of a stored program control system. CONSTITUTION:When the external supervisory equipment cannot receive a response signal via a signal processing processor within a prescribed time, it is decided that the signal processing processor corresponded with the external supervisory equipment is in an abnormal condition and the corresponded bit of an abnormality display register 8 is set. When a plural detection circuit 9 which discriminates whether the content of the abnormality display register 8 is a single number or the plural number within a unit time decides the plural external supervisory equipments are in the abnormal condition, it starts up an emergency control circuit 5 and when the content is the single number or 0, only the content of the abnormalty display register 8 including the signal processing processor discriminating information is sent to the supervisory controlling device 10 and the main exchange processing processors 3 and 4 through the supervisory controlling device 10 and the emergency control circuit 5 is not started up. |
