Task Control Instructions - Omron CP - PROGRAMMING MANUAL 05-2007 Programming Manual

Task Control Instructions

3-32 Task Control Instructions
3-32-1 TASK ON: TKON(820)
Purpose
Ladder Symbol
Variations
Applicable Program Areas
Operands
Operand Specifications
1040
This section describes instructions used to control tasks.
Instruction
TASK ON TKON
TASK OFF TKOF
Makes the specified task executable. Also, causes an interrupt task to operate
as an extra cyclic task.
TKON(820)
N: Task number
N
Variations Executed Each Cycle for ON Condition
Executed Once for Upward Differentiation
Executed Once for Downward Differentiation
Immediate Refreshing Specification
Block program areas
OK OK
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.)
Area
CIO Area
Work Area
Holding Bit Area
Auxiliary Bit Area
Timer Area
Counter Area
DM Area
Indirect DM addresses
in binary
Indirect DM addresses
in BCD
Constants
Data Registers
Index Registers
Indirect addressing
using Index Registers
Mnemonic Function code
820
821
Step program areas Subroutines
OK
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00 to 31 or 8000 to 8255 (decimal)
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Section 3-32
Page
1040
1043
TKON(820)
@TKON(820)
Not supported.
Not supported.
Interrupt tasks
Not allowed
N