3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.3 Settings for Creation and Execution of Multiple Sequence Programs
3.3.1 Initial execution type program
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O
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Per
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I/O N
unb
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Assig
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Me
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s a
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Fun
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3.3.1 Initial execution type program
Note18
(1) Definition of initial execution type program
An initial execution type program is executed only once when the PLC is powered ON
or the STOP status is changed to the RUN status.
The initial execution type program can be used for a program that need not be
executed from the next scan or later once it is executed, e.g. initial processing for the
intelligent function module.
Note18
Figure 3.21 When processing to be executed only once is separated as initial execution type
program
Basic
Note3.19
The initial execution type programs are not available for the Basic model QCPU.
Basic
When initial execution type program is used
Program A
Program B
When controlled by one program
Processing
executed only once
Processing
executed every scan
Initial execution
type program
Scan execution
type program
Divided into initial
execution type
program and
scan execution
type program.