2
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CHAPTER2 SEQUENCE PROGRAMS
2
3
2.3 Settings When Progr
am is Divided
(3) Program sequence in the CPU module
Figure 2.20 shows the program sequence after the CPU module is powered on or its operating status is changed
from STOP to RUN.
Use initial execution type program, stand-by type program, and fixed scan execution type program as required.
Figure 2.20 Program sequence
END processing
Powered off on/STOP RUN
Initial execution
type program
Low-speed
execution type
program
Scan execution
type program
Fixed scan
execution type
program
Stand-by type
program
Executed only once when
the CPU module is
powered on or its status is
switched from STOP to
RUN.
Executed only when the
constant scan function is
used or a low-speed
program execution time
value is set.
Executed at specified
time intervals.
Executed only when
its execution is
requested.
Program execution sequence
Program execution when
any subroutine program or
interrupt program is called
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