(1) Program sequence in the CPU module
The following shows the program sequence after the CPU module is powered on or its operating status is
changed from STOP to RUN. Use an appropriate type of program as required.
Power-on or STOP
Initial execution
type program
END processing
Scan execution
type program
RUN
Fixed scan execution
type program
Standby type
program
CHAPTER 2 APPLICATION OF PROGRAMMING
Executed once when
the CPU module is
powered on or switched
from STOP to RUN.
Executed at specified
intervals.
Executed upon request.
Program execution sequence
Program execution when
a subroutine program or
interrupt program is called
2
59