| 摘要 |
PURPOSE:To use a communication node again while keeping the operating state without stopping the on-line system by providing a communication node recovery means operated according to a program if the communication node enters disabled control. CONSTITUTION:Mismatching is caused on a node control table 4 due to the misprocessing of a communication control means 2 for the communication node 1 and the control of the node 1 is disabled, then a node recovery request command allows a communication node recovery means 3 to correct forcibly the mismatching of the table 4 thereby releasing a message buffer 5 storing an input message from the node 1 and a message processing task 6 processing the input message from the node 1. Thus, the node 1 is used again while keeping the operating state without stopping the on-line system. Further, the message buffer and the message processing task are released to apply input message processing of other communication nodes without delay and the disabled control of the entire system or the other communication nodes is prevented.
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