LADDER DIAGRAM PROGRAM CREATION ASSISTANCE DEVICE, LADDER DIAGRAM PROGRAM CREATION ASSISTANCE METHOD, AND LADDER DIAGRAM PROGRAM CREATION ASSISTANCE PROGRAM

摘要

A partial circuit selection unit selects a partial circuit comprising a plurality of contacts in a ladder diagram program. A replacement circuit generation unit generates a replacement circuit comprising a smaller number of contacts than in the selected partial circuit. An auxiliary circuit generation unit generates an auxiliary circuit that causes the replacement circuit to perform the same action as the partial circuit. A program editing unit performs, on the ladder diagram program, a replacement process for replacing a partial circuit appearing in the ladder diagram program with the replacement circuit, and performs an auxiliary circuit insertion process for inserting the auxiliary circuit into the ladder diagram program.