AH500 Hardware and Operation Manual
8.2.2 Tasks Supported by AH500 Series CPU Modules
The number of interrupts supported by an AH500 series CPU module is 288. There are mainly two types of
tasks.
Cyclic task 0~cyclic task 31 (32 cyclic tasks)
Cyclic tasks are executed in every scan cycle. A cyclic task can be activated/inactivated by means of the
instruction TKON/TKOFF. Users can set the initial state of a cyclic state.
Please refer to the figure below. After users click a cyclic task in the Task Manager window, they can set
the initial state of the cyclic task in the Task Description section. If the Active checkbox is unselected,
the cyclic task will not be executed until it is activated by the instruction TKON in the POU assigned to
another cyclic task. Please refer to AH500 Programming Manual for more information about the
instructions TKON and TKOFF.
Interrupt task 0~interrupt task 255 (256 interrupt tasks)
AH500 series CPU modules provide various kinds of interrupts. The interrupts provided by AH500 series
CPU modules will be introduced in the following sections.
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