Omron CJ - PROGRAMMING MANUAL 12-2009 - Sequence Control Instructions

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Sequence Control Instructions
Section 3-3
3-3 Sequence Control Instructions
Instruction
Mnemonic
Code
Symbol/Operand Function Location
Execution condition
END
END
001
Output
Not required
NO OPERATION
NOP
000
This instruction has no function. (No processing is performed for
NOP(000).)
Output
Not required
INTERLOCK
IL
002
Output
Required
END(001)
Indicates the end of a program.
END(001) completes the execution of a program for that cycle. No
instructions written after END(001) will be executed. Execution
proceeds to the program with the next task number. When the
program being executed has the highest task number in the program,
END(001) marks the end of the overall main program.
Program A
Task 1
Task 2
Task n
Program B
Program Z
I/O refreshing
End of the main program
To the next task number
To the next task number
IL(002)
Interlocked section
of the program
Normal
execution
Outputs
interlocked.
Execution
condition OFF
Execution
condition ON
Execution
condition
Interlocks all outputs between IL(002) and ILC(003) when the
execution condition for IL(002) is OFF. IL(002) and ILC(003) are
normally used in pairs.