Internal Device Task
The Internal Device Task is used to run a task when the status of a designated internal device changes.
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Task priority can be set to a value between 2 and 7. a value of 2 will be highest priority task.
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Task number is a value of 24 thru 39.
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Internal device can be a BIT or a WORD.
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Starting conditions for BIT can be rising edge, falling edge or transition.
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Starting conditions for WORD are shown in the chart below.
| Symbol | Description |
|---|---|
| < | Starts the task when the word is less than the set value. |
| <= | Starts the task when the word is less than or equal to the set value. |
| == | Starts the task when the word is the same as the set value. |
| >= | Starts the task when the word is more than or equal to the set value. |
| > | Starts the task when the word is more than the set value. |
| Step | Action |
|---|---|
| 1 |
In an Open XG5000 project right-click on Scan Program. Choose Add ItemèTask… or select Project menu -> Add ItemèTask…
or
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| 2 |
Add a Task name for the external contact task. Choose the priority, task number, Internal Device, and Internal device execution condition for the task. Press OK when done to create the task.
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| 3 |
The task requires a program for it. Press Yes to have XG5000 automatically start the program creation process.
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| 4 |
Give the program a program name. Choose the programming language also. Press OK to create the program.
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| 5 |
A Task will appear in the Project Window with the name given during the creation process. This example shows the task name as IntDev.
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LP309-4