Allen-Bradley ControlLogix 1756 - Specifying TASK Attributes; TASK Guidelines

Publication 1756-RM084F-EN-P - July 2002
3-34 Creating a Complete Import/Export File
Where:
Specifying TASK attributes
You can specify these attributes for a TASK:
TASK guidelines
Keep these guidelines in mind when defining a task:
• Tasks must be defined after programs and before controller
objects.
• There can be at most 32 tasks.
• There can only be one continuous task.
• A program can be scheduled under only one task.
• Scheduled programs must be defined - i.e. must exist.
Item: Identifies:
task_name
the task
Attributes
attributes of the task
can also contain a description of the task
separate each attribute with a comma (,)
program_name
each program within the task
all program names are followed by a semi colon (;)
Attribute: Description:
Description
Provide information about the task.
Specify:
Description := ” text ”
Type
Specify the type of task (PERIODIC or CONTINUOUS).
There can be only one continuous task.
Specify:
Type := type
Watchdog
Enter the watchdog timeout for the task
(1.000-2,000,000.000 us).
Specify:
Watchdog := number
Priority
Specify the priority of a periodic task (1-15)
Specify:
Priority := number
Rate
If the task is a periodic task, specify how often to run the
task (1.000-2,000,000.000 us).
Specify:
Rate := number