Delta AS300 Series - Status and Operation under Different Operating Modes

AS Series Operation Manual
11-4
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11.2.2 Status and Operation under Different Operating Modes
The following table lists the status and operation states for RUN and STOP modes.
 Basic operation
CPU
mode
Program
I/O
refreshing
External output
Program memory
Non-latched
area
Latched
area
STOP
The execution
of the program
stops.
I/O refreshing
executes.
OFF. If you set the I/O
module so that the final
state of the external output
on the I/O module is
retained, the final state of
the external output on the
I/O module is retained.
The data in the program
memories is retained.
RUN
The program
executes.
I/O refreshing
executes.
The program controls the
external output.
The program controls the
program memories.
 Relationship between the operating modes and tasks
Mode Loop task Interrupt task
STOP Execution of a loop tasks stops.
Execution of an interrupt task
stops.
RUN
 The tasks that have not been executed are in the
HALT state.
 If a task is active, or the instruction TKON is
executed, the task executes.
 If a task is not active, or the instruction TKOFF
executes, the task does not execute.
If the condition of the interrupt is
met, the interrupt task executes.
 Relationship between changing modes and the program memory
Change of the mode Non-latched area Latched area
STOP→RUN
Data is cleared or retained depending
on your setting.
The data is retained.
RUN→STOP The data is retained. The data is retained.