Programming method and apparatus for programmable controller.

摘要

In a sequence program constructed by forming a ladder diagram on a display screen, an element corresponding to a minimum unit of the ladder diagram is arranged by a symbol element and a character element. Inputting and amending operations of the ladder diagram are performed by a first cursor (11) for designating each element and a second cursor (12) for designating the character element of the element designated by this first cursor (11). <IMAGE>