Fixed Scan Execution Type Program - Mitsubishi 00JCPU User Manual

Q series programmable controller
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2.3.5 Fixed scan execution type program

(1) Definition
Fixed scan execution type program is a program executed at specified time intervals.
This type of programs, unlike interrupt programs, can be interrupted in units of files without interrupt pointers or
the IRET instruction.
For the restrictions on programming, refer to Section 2.2.3(2)(b).
Fixed scan interval
END processing
Scan execution
type program
Fixed scan execution
type program
To execute a fixed scan execution type program, execute the EI instruction in the initial execution type program or scan
execution type program to enable interrupts.
Condition
established
Figure 2.38 Execution of a fixed scan execution type program
CHAPTER2 SEQUENCE PROGRAMS
Condition
established
2
3
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