Main program process
INT11 program process
INT12 program process
INT11 input
INT12 input
Executes ICLR (INT12 clear)
■
Precautions for programming
● Always use the INTPG n and IRET instructions in combination. A syntax error occurs if either
"INTPG" instruction or "IRET" instruction is not used.
● More than one INTPG instruction with the same number cannot be specified.
● If a unit in which interruption occurs is not installed in a specified slot number, the no target
unit error 10 is displayed and the mode cannot be switched to RUN.
● Branching from the interruption program area (between INTPG and IRET) to other
subprogram areas or main program area is not possible.
● A subroutine program cannot be used in an interrupt program.
● An interrupt program cannot be used in a subroutine program.
● It is operable even if one IRET instruction is used for multiple interruption programs INTPG.
3.39 INTPG (Unit Interruption Program Start), IRET (Unit Interruption Program
End)
WUME-FP7CPUPGR-12 3-121
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