Product metrics for IEC 61131-3 languages

Quantitative metrics is a key input for improving software development processes. While developing applications using IEC 61131-3 languages, one of the major drawback is unavailability of product metrics. This paper discusses a methodology to define metrics for domain specific languages. Using this methodology, we have defined a set of product metrics that can be used for managing the software project development using IEC 61131-3 languages. We have defined size metrics for these languages using the language specific parameters, which will help the developers for better estimation and tracking the productivity.