DISCREPANCY CHECK SYSTEM FOR DEVICE AND DEFINED SYSTEM DEFINITION INFORMATION

PURPOSE:To execute an SG discrepancy check between sections in the case SG (system definition information) is divided and defined into each function unit (section) constituting the system. CONSTITUTION:An SG revision management means 8 updates a revision number in revision information 8-1, whenever an SG object generating means 6 generates SG of a new object format. Also, '0' is set to a checked flag in inter-section check information 9-1 of an updated section. An inter-SG section checking means 9 receives a change notice of the revision number from the SG revision management means, and refers to the inter-section check information 9-1. In this case, when the checked flag is '0', an inter-section check is executed, and as a result of check, unless there is mismatching, '1' is set to the checked flag. In the case the checked flag at the time of reference is '1', the check is not executed.