| 摘要 |
<p>There is provided a method for generating a reference master pattern for determining a normal state of automated lines. According to an embodiment of the present invention, a method for generating a reference master pattern for determining a normal state of automated lines comprises the steps of: extracting process change information of each of monitoring groups consisting of at least one among processes forming automated lines from a log recorded in an internal memory of a programmable logic controller (PLC), as a result of normal operation of the automated lines where a plurality of PLC signals are transmitted and received between the PLC and the automated line such that the automated lines are sequentially controlled, according to calculations of an internal logic of the PLC; filtering and removing process change information of a corresponding monitoring group out of the maximum allowable cycle time among the process change information of each of the monitoring groups; generating a master pattern for each monitoring group using the process change information of each of the monitoring groups which is left after the filtering; and comparing the master pattern generated for each monitoring group with a pre-generated reference master pattern, and when the master pattern is different from the reference master pattern, adding the master pattern as a reference master pattern of the corresponding monitoring group.</p> |
