| 摘要 |
PURPOSE:To ensure a direct input for the sequence described in the logic symbols in the form of a program, by producing a program through the combination of the logic symbols displayed on the CRT display. CONSTITUTION:The CRT display 13 can display the logic symbols through the combination of the picture elements. Accordingly, if the keyboard 14 is operated based on the sequence written with the logic symbols, the sequence can be plotted directly on the display 13 via the program producing device 12. In such way, the display is carried out and also converted into the instruction of the sequence controller 11 to be written into the relevant memory in the form of a program. Thus the sequence described in the logic symbols can be supplied directly and in the form of a program without changing the logic symbols into the ladder chart. |
