| 摘要 |
PURPOSE:To judge the occurrence of failure to any part of the system when the test data reception table provided in the internal of each unit are not renewed within a given time, by the output of the test data in common to each unit from the unit at a given time. CONSTITUTION:The units K1 to Kn having the transmission control section 11, reception control section 12 and data processing section 20 at the interface 10 are connected to the data bus B. The unit K1 delivers the test data T consisting of the selection information section and data section to other units from the transmission control section 11 and receives them at the self reception control section 12. The data processing section 20 compares the reception test data with the transmission data, and when they are in agreement, the test table T' is renewed. In the unit Kn providing only the reception control section 12, every time when the test data are received, the table provided at the reception control section 12 can be renewed. |
