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MELSEC-Q
3 SPECIFICATIONS
3.11 Running a Task (a created program)
Here, running a task when the QD51 (-R24) is in the Run Mode and in the Multitask
Debug Mode is explained.
3.11.1 Conditions for permitting running of a task and start conditions
In the QD51 (-R24), a task is permitted to be run when it satisfies all the conditions
shown below (1). (Actual starting of a task depends on the start conditions designated
in the multitask setting.)
(1) Task Run Permission Conditions
Task start conditions are shown below (a), (b).
(a) The start conditions (Refer to Section 3.9) are set in the multitask setting.
(b) The GX Developer intelligent function module switch settings (Refer to
Section 5.6) is set on "Run Mode (0, 1)" or "Multitask Debug Mode (2, 3)".
[Program]
Stored in Flash ROM
Task start conditions
already set.
[GX Developer Mode Setting]
0, 1: Run Mode
2, 3: Multitask Debug Mode
(2) Task Start Conditions
Each task is run in accordance with the set start conditions.
The start conditions that can be set by the QD51 (-R24) are following three types.
Start Condition Symbol Reference Section
Starting by turning the power on or by reset START Section 3.11.2
Starting by an interrupt from the programmable controller CPU IT Section 3.11.3
Starting by a start request from another task BOOT, ON Section 3.11.4
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