Chapter 5 Program Configuration and Operation Method
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5.3 Operation Mode
For operation mode of CPU module, there are 3 types such as RUN mode, STOP mode and DEBUG mode..
Here describes the operation processing of each operation mode.
5.3.1 RUN Mode
This is the mode to execute Program operation normally.
1) Processing at Mode Change
At the beginning, execute initialization of data area and examine the effectiveness of program and judge
the possibility of execution.
2) Operation Processing Contents
Execute I/O refresh and Program operation.
(1) Detects the start condition of Interrupt Program and executes Interrupt Program.
(2) Examines the normal operation or missing of built-in module.
(3) Communication service and other internal processing.
RUN mode first scan start
Initialize data area
Examine Program effectiveness and
judge the possibility of execution
Execute input refresh
Program execute, Interrupt Program
execute
Examine the normal operation or
missing of built-in module
Communication service and internal
processing
Execute output refresh
Operation
mode change
RUN mode keep
Change to other mode
Operation by changed operation
mode
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