Patent ID: 9606902
Date: 2017-03-28
CPC Classifications: G05B,G06F

Claim:
1. A malfunction influence evaluation system comprising: a controller simulator comprising a processor and a memory, the controller simulator configured to simulate an operation of a controller; an input device configured to provide input data to the controller simulator; a simulation manager configured to integrally manage execution of the input device and the controller simulator; and a database configured to store malfunction information that the simulation manager refers to and simulation conditions, wherein the controller simulator has a control program of the controller and an analysis unit of the controller, and wherein the analysis unit has a propagation flag tracking processing function for providing a propagation flag to a variable within the control program, setting a bit by inputting predetermined values, respectively, as malfunction input values to the variable, propagating the bit when the variable is involved in a calculation within the control program, tracking a propagation status of the bit, and outputting a result.