Basic Instructions
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When another interrupt program is being executed, an interrupt will occur after the current program is
completed.
Main program
INT1 program
Execution
INT2 input
on
off
INT2 program
Execution
Execution
Precautions during programming for all types
If either the INT instruction or IRET instruction is missing, a syntax error will result.
When an interrupt is issued, the operation memory corresponding to the interrupt input contact does not
undergo I/O refreshing. Therefore, contacts other than the interrupt input contact, such as the constantly−on
relay R9010, should be specified by the input conditions in the interrupt program.
INT 5
IRET
X5
F0 MV, K10, DT100
Specify R9010 or other
contact instead of X5.
A subroutine program cannot be used in an interrupt program.
SUB 11
RET
IRET
INT 1
Subroutine
An interrupt program cannot be used in a subroutine program.
Interrupt program
INT 0
IRET
RET
SUB 11
Subroutine
Interrupt program cannot be programmed into another interrupt program.
INT 1
IRET
INT 0
FP0/FP0R/FP−e/FPΣ/FP−X
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