| 摘要 |
PURPOSE:To prevent output of unestablished erroneous data by transferring information data of an information route of normal other series to an information route of one abnormality series for a prescribed time based on a control program of an information exchange device at transmission side when the transmission of information data is intermitted temporarily and restored. CONSTITUTION:The transmission side information exchange 31 transmits an information data to a reception side information exchange 2. A state supervisory section 32 supervises the state of A system information route and a B system information route and if an abnormality takes place, the abnormality signal of the information route is transmitted to an information processing control section 33. The information processing control section 33 detects the type of abnormality state signal based on the abnormality signal from the state supervisory section 32, reads the corresponding control program from a control memory section 34 so as to execute the control by a control program. Interface sections 35, 36 transfers and releases the information data of an A system transmission/reception section 9 and a B system transmission/reception circuit section 13 respectively to an inter-system link circuit 37 by the backup indication of the information processing control section 33. An inter-system link circuit 37 outputs the transferred information data respectively to the A system transmission/reception section 3 or the B system transmission/reception section 6. |
