Omron NX701-1620 User Manual page 286

Appendix B
 Calculating Times on the Physical Controller
When the project consists of one primary periodic task, check the average task execution time using
the Task Execution Time Monitor function of Sysmac Studio while online with the physical Controller.
Design the task using the following as a guideline:
 NJ501-20
Average task execution time < Task period x 0.8
 NJ101-20
Average task execution time < Task period x 0.6
When the project consists of multiple tasks, test performance under all foreseeable conditions on the
actual system and make sure that the DB Connection Instructions are executed within the appropriate
execution time before starting actual operation.
B-10 NJ/NX-series Database Connection CPU Units User's Manual (W527)