| 摘要 |
PURPOSE:To improve the program processing efficiency by continuing the program processing job even though a program of a divided level is through as long as the time allocated to the relevant level remains. CONSTITUTION:A program 1 of a 1st level should be processed in the emergency states including the emergency stop, the alarm processing, etc. A program 2 of a 2nd level processes a normal sequence program. A program 3 of a 3rd level is used for the display control, etc. which has especially the reduced time limitation. The program 2 is calculated with its maximum time and divided and therefore finished in a shorter time than the prescribed value for production of the residual time 2a. Thus the program 2 is carried out continuously even for the time 2a and therefore the program processing efficiency is improved by a degree equivalent to said time 2a. |
