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Reverse compiling method for ladder type logical machine language

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专利汇可以提供Reverse compiling method for ladder type logical machine language专利检索,专利查询,专利分析的服务。并且PURPOSE: To easily edit an incorporated machine program without referring to an original ladder-type logical source program and to reduce the storage capacity by reversely compiling the object code in the machine language to an I-code.
CONSTITUTION: Instructions of a user program incorporated in the storage device of a controller 10 are read in accordance with a set of prescribed rules to generate a connection matrix where columns indicate contact numbers and rows indicate connection nodes of contacts. Data on this connection matrix is used to reproduce the graphic structure of a ladder graphic 50 written in the source language and is used for parsing which purposes to edit the original ladder graphic and generates one expression which can be decoded by a computer. Since the ladder graphic 50 is reconstituted directly from the machine program without storing a source code token, the storage capacity of the controller 10 required to hold the compiled program is reduced.
COPYRIGHT: (C)1990,JPO,下面是Reverse compiling method for ladder type logical machine language专利的具体信息内容。

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