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Task Control Instructions Section 3-32
Specifying an Earlier Task
When CIO 0.00 is ON in the following example, task number 1 is made exe-
cutable in task number 3. Task number 1 will be executed in the next cycle
when program execution reaches task number 1.
3-32-2 TASK OFF: TKOF(821)
Purpose Puts the specified cyclic task or extra cyclic task into standby status, i.e., dis-
ables execution of the task.
Ladder Symbol
Variations
Applicable Program Areas
Operands N: Task number
The allowed range for N depends on the kind of task being specified.
• Cyclic tasks:
N must be a constant between 0 and 31 decimal. (Values 0 to 31 specify
cyclic tasks 0 to 31.)
• Extra cyclic tasks:
N must be a constant between 8000 and 8255 decimal. (Values 8000 to
8255 specify extra cyclic tasks 0 to 255.)
Task number 1 is executed
in the next cycle.
0.00
Task 3
Task 1
1
N
TKOF(821)
N: Task number
Variations Executed Each Cycle for ON Condition TKOF(821)
Executed Once for Upward Differentiation @TKOF(821)
Executed Once for Downward Differentiation Not supported.
Immediate Refreshing Specification Not supported.
Block program areas Step program areas Subroutines Interrupt tasks
OK OK OK Not allowed
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