An algorithm of compiling instruction list into the ladder diagram base on the block extension

摘要

In the present work, we provide a type of block extension method base on instruction list and ladder-diagram drawing structure. This new method not only can transform instruction list into corresponding ladder-diagram, but also can give corresponding error message while the ladder-diagram can not be transformed. By programming proving, the algorithm is simple, practical, and universal. Especially, it can be used in the programmable logic controller system successfully.