| 摘要 |
PURPOSE:To facilitate a detection of faults, a process for transmission of a large amount of information, an application in a free format, etc. by having provided with a transmission line prepared by a system which transfers an information with every block together with a transmission line of a system which transfers an information in time division. CONSTITUTION:A frame bit, a CHA bit and a CHB bit exist on a transmission line 10. An interface 20 fetches the frame bit to give a detection and separation to the frame, and the separated frames are sent to the 1st and 2nd input/output interfaces 30 and 40 respectively. Now if change of correspondence is desired for a device fixed to the CHB bit in the 1:1 correspondence for some reason, the information telling so is put on the CHB bit to be sent to a changeover switch 60. By receiving this information, an information deciding process part 61 actuates a switch 62. Thus the correspondence is changed from a state shown by a solid line before switching to a state showm by a broken line, and accordingly the correspondence between devices is also changed. |
