Mitsubishi Electric MELSEC iQ-R Series - Page 105

8 RUNNING A PROGRAM
8.5 Program Execution Type
103
8
Fixed scan interval setting
Set the execution condition of the fixed scan execution type program.
[CPU Parameter]  [Program Setting]
Operating procedure
Displayed items
Operation when the execution condition is satisfied
The following describes operation of the program.
■If the execution condition is satisfied before the interrupt is enabled by the EI instruction
The program enters the waiting status and is executed when the interrupt is enabled. Note that if the execution condition for
this fixed scan execution type program is satisfied more than once during the waiting status, the program is executed only
once when the interrupt is enabled.
■If there are multiple fixed scan execution type programs
If the specified time comes simultaneously for these programs, they are executed in order according to the specified
execution sequence.
■If another or the same execution condition is satisfied while the fixed scan execution type
program is being executed
The program is executed according to the fixed scan execution mode setting.
■If the execution condition is satisfied while the interrupt is disabled by the system
The program is executed according to the fixed scan execution mode setting.
"Program Setting" window
1. Click "Detailed Setting" on the
"Program Setting" window.
"Detailed Setting" window
2. Select the program name and set the
execution type to "Fixed Scan".
3. Click "Detailed Setting Information".
"Fixed Scan Execution Type Detailed Setting" window
4. Set the fixed scan interval.
Item Description Setting range Default
Specified Time
Intervals
Sets the fixed scan interval to execute the fixed scan execution type
program.
• When "ms" is selected: 0.5 to 60000ms (in
increments of 0.5ms)
• When "s" is selected: 1 to 60s (in increments
of 1s)

Unit Selects the unit for the fixed scan interval. • ms
•s
ms