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6.22 High Speed Interrupt Function
6.22.1 High speed interrupt program execution
6
FUNCTIONS
6.22.1 High speed interrupt program execution
Note73Note74
The high speed interrupt program execution function is designed to run an interrupt
program according to the setting of high speed interrupt pointer I49.
(1) Setting method
Set the high speed interrupt pointer I49 at "High speed interrupt I49 fixed scan
interval" after choosing "PLC system" - "System interrupt settings" - "High speed
interrupt setting" on the PLC parameter screen.
(2) Precautions
(a) High speed interrupt while interrupt is disabled
The high speed interrupt program is only executed as interrupt enable.
Refer to Section 6.22.4 (3) for the items that delay high speed interrupt's start
from interrupt disable.
(b) When high speed interrupt is ignored
If the interrupt disable period continues longer than the set interrupt cycle interval,
high speed interrupt may be ignored.
High speed interrupt is ignored once when it occurs twice during interrupt disable.
Note73
Note74
Figure 6.101 High speed interrupt setting
Basic
Process
Redundant
UD
Universal
Note6.71
High
Performance
Note6.72
The Basic model QCPU, Process CPU, Redundant CPU and Universal model QCPU do not
support the high speed interrupt program function.
Basic
Process
Redundant
UD
Universal
The Q02CPU does not support the high speed interrupt program execution.
When using the high speed interrupt function with the QnHCPU, check the versions of the CPU
module and GX Developer. (
High
Performance
Set within the range
0.2 to 1.0ms.