High Speed Interrupt Function; High Speed Interrupt Program Execution Function; High Speed I/O Refresh And High Speed Buffer Transfer Functions - Mitsubishi 00JCPU User Manual

6.22 High Speed Interrupt Function

When an interrupt program is created using the high speed interrupt pointer (I49), the entire program can be executed
at a high speed, being interrupted at intervals of 0.2ms to
Also, this function improves the I/O response because I/O signal data within the parameter-set range and intelligent
function module buffer memory data are refreshed before and after execution of the high speed interrupt program.
This allows high-accuracy control such as precise position detection.
Main routine program
(scan time 1ms)
I49 interrupt program
Main routine program
High speed interrupt start
Buffer memory reading
High speed interrupt
program execution
Buffer memory writing
High speed interrupt end
The high speed interrupt function includes the following:

• High speed interrupt program execution function:

• High speed I/O refresh and high speed buffer transfer functions:

Note26
Note6.26
Basic
The Basic model QCPU, Q02CPU, Process CPU, and Redundant CPU do not support the high speed interrupt
function.
When using the high speed interrupt function for the High Performance model QCPU, check the versions of the CPU
module and GX Developer. (
Interrupt interval: 0.2ms (parameter setting)
Step 0
Waiting time
Input (X)
I49 overhead
Output (Y)
Figure 6.87 High speed interrupt timing chart
High
Process
Redundant
performance
Appendix 2.2)
Note6.26
1.0ms.Note26
Section 6.22.1
Section 6.22.2
CHAPTER6 FUNCTIONS
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