| 摘要 |
PURPOSE:To conduct the connection test by providing fixed information registers respectively to plural devices and also providing a reading/storage device of register information to which a common bus is connected to activate the reading/storage device by a single command from a central processing device. CONSTITUTION:In checking the connecting state of each device, the central processing unit indicates the reading of fixed information of each device TM to the information reading/storage device RH by a single command. The information reading/storage device RH transmits the instruction of fixed information transmission to devices TM1-TMn by this instruction. The devices TM1-TMn return the storage information of fixed information storage registers RG1 RGn. The information reading/storage device RH stores the information to the own return information storage memory MM. When the return information from all the devices is collected, the report of end is transmitted to a CPU. The CPU confirms the return information storage memory in the information reading/storage device RH and tests the connecting state. |
