Mitsubishi QCPU (Q Mode) User Manual

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MELSEC-Q
7 FUNCTION
POINT
Since the high speed interrupt function need to pick up interrupts at very short
intervals of 0.2ms to 1.0ms with the interrupt pointer I49, please do not run the
interrupt programs, which use the other interrupt pointers I0 to I48, I50 to I255, and
fixed scan execution type programs.
If any of the interrupt and fixed scan execution type programs is executed, interrupt
cannot be made at the cycle intervals set for the high speed interrupt function.
Refer to Section 7.20.3 for other restrictions.
(1) Compatible CPUs
CPU Type Compatibility Remarks
Q02HCPU, Q06HCPU
Q12HCPU, Q25HCPU
Compatible
Upper 5 digits of serial No. is
"04012" or later
Q02CPU Incompatible
—
(2) Specifications of high speed interrupt function
Item Description Remarks
Interrupt cycle interval 0.2 to 1.0ms 0.1ms units
Number of interrupt
programs
1 Interrupt pointer I49
To set the high speed interrupt function, choose "PLC system" - "System
interrupt settings" - "High speed interrupt setting" on the PLC parameter screen.
(3) Detailed items of high speed interrupt function
Item Description
Interrupt program execution Runs the interrupt program created with I49.
High speed I/O refresh
Updates I/O signals between the I/O, intelligent function
modules and CPU module at interrupt cycle intervals.
High speed buffer transfer
Updates data between the intelligent function module
buffer memories and CPU module devices at interrupt
cycle intervals.

Mitsubishi QCPU (Q Mode) Specifications

General

Brand	Mitsubishi
Model	QCPU (Q Mode)
Category	Controller
Language	English