LADDER DIAGRAM CORRECTING METHOD, LADDER DIAGRAM CORRECTION SYSTEM, AND CAD DEVICE FOR LADDER DIAGRAM

摘要

PURPOSE: To provide the CAD device capable of managing an application instruction by enabling a method which eliminates the need to re-input comments regarding the application instruction even when a ladder diagram is corrected and an uploading process without any posting process irrelevantly to whether an instruction is a basic instruction or the application instruction. ;CONSTITUTION: A comment holding process part 12 holds character string data of the application instruction and comment information by the character string data in a comment information storage means 15 while linking them with each other. An uploading means 11 inputs information which is corrected on the side of a PC tool 30 as CAD information of the side of the CAD device 10. An application instruction retrieval means 23 retrieves the application instruction in CAD information regarding a ladder diagram after uploading to search for the instruction matching the application instruction before correction in the comment information storage means 15. A comment reposting process part 13 develops the comment information, held in the comment information storage means 15 while linked with the character string of the matching application instruction, in the CAD information regarding the uploaded ladder diagram after correction.;COPYRIGHT: (C)1995,JPO