| 摘要 |
PURPOSE:To obtain information necessary for maintenance and operation and to operate by a command input by enabling a console to work under control of a processor for communication control when an auxiliary processor is at fault. CONSTITUTION:Normally, the console 7' is connected to the auxiliary processor 5' through a change-over switch 10, and input/output for maintenance and operation are processed by the auxiliary processor 5'. When, for some reason, the auxiliary processor 5' goes to wrong state, and the console 7' is made unable to use, a maintainer operates the change-over switch 10 to switch it to a circuit connection 2' side. Then, the console is made usable under control of a processor 4'. That is, one of containable circuits of the circuit connection section 2' is registered beforehand for the console 7' to make control of the console separately from other ordinary circuits. |
