System for debugging sequence program
AssigneeFanuc Corporation
InventorsKunio Tanaka, Yasushi Onishi, Kazuo Sato
Life of this patent
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Abstract
A system for debugging a sequence program generated by flowcharting to allow a chronological flow of steps to be easily confirmed. A data display screen has a time display area which displays a succession of sampling times at predetermined time intervals, and a step number display area which displays the numbers of steps which are executed at the sampling times. The data displayed on the data display screen indicates that the steps of a parallel branch section require respective execution times corresponding to different sampling periods, respectively. As a result, it can be seen at a glance which steps determine the execution speed of the entire parallel branch section.
Claims6
A system for debugging a sequence program having steps and generated by a sequential flowchart including a sequential function chart (SFC), comprising:
- program executing means for executing the sequence program;
- sampling means for sampling only the steps being executed, at predetermined time intervals, while said sequence program is being executed;
- step storage means for storing the sampled steps;
- and
- display means for displaying, for the predetermined time intervals, only the stored step numbers being executed at the corresponding predetermined time intervals.
Dependencies are inferred from the claim text.