Read full paper at: http://www.scirp.org/journal/PaperInformation.aspx?PaperID=53320#.VLys_MnQrzE Author(s) Mohammed Bani Younis Affiliation(s) Faculty of Engineering, Philadelphia University, Amman, Jordan . ABSTRACT As a result of sudden failure in the Programmable Logic Control (PLC) controlled process, the need of diagnosis arises. Diagnosis problem plays an important role to monitor failures in PLC, used to control the whole process. Nowadays and due to the lack of the needed tools availability to perform this action automatically, it is accomplished manually. Usually, the time consuming method is used by back-tracking the failure on an actuator due to the corresponding sensors. This paper analyzes the software quality metrics and their application on the PLC programs. Aiming to implement metrics that gives predictive information about diagnosability of an Instruction List (IL) PLC programs, this could minimize the needed eff...
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