Chapter 10 CPU Function
10.3.2 Task Program Occupancy Rate Excess Warning /Error
If the occupancy rate of the program increases due to the execution of the main/periodic tasks, the system
service cannot be executed. To prevent this, this function allows the user to detect the task program occupancy
rate excess warning/error. (System service: Services, excluding the main/periodic/ initialization task)
(1) The task program occupancy rate excess warning is set in the basic parameter of XG5000 as follows.
(2) If the set occupancy rate is exceeded while monitoring the task program occupancy rate during the execution of
program, the task program occupancy rate excess warning is generated. If the task program occupancy rate is 100%
in the state where the warning occurs, the task program occupancy rate error is generated.
(3) The following measures are required when the task program occupancy rate warning/error occurs.
(a) Secure the time for the system service to operate by reducing the amount of the user program execution
within the main task/periodic task.
(b) Secure the time for the system servic to operate by increasing the execution cycle of the main task/periodic
task of the basic parameter.
(c) Increase the task program occupancy rate excess warning setting of the basic parameter.
10.3.3 Error History Storage Function
The motion controller is designed to record the error history when errors occur, identify the cause of the errors
and correct them.
Click on the 『Online』-『Diagnostics』-『PLC Error/Warning』items of the menu to see the current errors
and error history. Please refer to the details and action contents for each error item and eliminate the cause of
error.
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