| 摘要 |
PURPOSE:To shorten the time required for process of a telegram as well as to simplify the process, by providing a state controller including a storage means and a control means to a computer system that processes the telegram received from a terminal device and then performing a process after a fault arises. CONSTITUTION:A terminal device 10 is connected via a communication controller 40 to a computer system comprising a CPU20, a journal 30 of an external storage device and a state controller 50. Then a telegram given from a terminal is processed. The controller 50 incorporates a high-speed and nonvolatile storage device 52 that holds the state of process of the telegram plus a controller 51 that controls the security and release of the region of the device 52 plus the transition and reading of the state of process based on a control instruction given from the CPU20. When the CPU20 has a fault and the fault is recovered, the CPU20 detects the state of process of the controller 50. Then the process after the fault is carried out with the state of process used as the basic information. As a result, the discrimination can be eliminated for the contents of process with the information of the journal to realize a high-speed and simplified process after a fault arises. |
