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21.9 Interrupt Pointer (I)
Interrupt causes of the interrupt pointer numbers
A list of interrupts is provided below.
The priority for the interrupt pointer numbers and interrupt
factors
The priority for the interrupt pointer numbers and interrupt factors are indicated.
• The interrupt priority is the order which is executed at the time of the multiple interrupt. The lower the
numerical value, the higher the interrupt priority.
• The interrupt priority order is the order which is executed when the interrupt factor with the same interrupt
priority is generated.
Interrupt Interrupt pointer number Description
Input interrupt I0 to I15 interrupt pointer used for input interrupt of CPU module. Up to 8 points can be used.
High-speed comparison
match interrupt
I16 to I23 Interrupt pointer used for high-speed comparison match interrupt of CPU module.
Interrupt by internal timer I28 to I31 Interrupt pointer used for fixed cycle interrupt by internal timer.
Interrupt from module I50 to I177 interrupt pointer used for interrupt from intelligent function module.
Interrupt pointer
number
Interruption cause Interrupt priority Interrupt priority
order
Remarks
I0 Input interrupt 1 to 3 1 The default value for priority is "2".
I1 2
I2 3
I3 4
I4 5
I5 6
I6 7
I7 8
I8 9
I9 10
I10 11
I11 12
I12 13
I13 14
I14 15
I15 16
I16 High-speed comparison
match interrupt
1 to 3 17 The default value for priority is "2".
I17 18
I18 19
I19 20
I20 21
I21 22
I22 23
I23 24
I28 Interrupt by internal timer 1 to 3 28 The default value for priority is "2".
I29 27
I30 26
I31 25
I50 to I177 Interrupt from module 2 to 3 29 to 156 The default value for priority is "3".
The highest priority rank is I50 and the lowest is I177.