| 摘要 |
A multi-tasking system in which tasks are grouped and the action of the safety function is different for each group so that the control of a machine can safely and easily be performed with one control device and that the monitoring of each device can be performed at all times, and a medium and a processing device in which a program thereof is recorded. A multi-tasking system 100 for controlling a plurality of tasks has a program executing unit 11 for processing a plurality of tasks by the multi-tasking processing and a task table 21 for keeping grouping information set for each of the plurality of tasks, and the program executing unit 11 has stop units (an emergency stop unit 16, a temporary stop unit 17 as the safety function, and the stop unit obtains grouping information from the task table 21 on the basis of a stop instruction and identifies a group of each task, and performs a different control for each group.
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