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3.3 Settings for Creation and Execution of Multiple Sequence Programs
3.3.4 Stand-by type program
3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
1) Operation of subroutine and interrupt programs in stand-by type
program
When the execution of the stand-by type program is finished, a program in the
stand-by type program is called and its execution is resumed.
Figure 3.40 shows the operation performed when the subroutine and interrupt
programs in the stand-by type program is executed.
POINT
1. Refer to the following section for restrictions on subroutine or interrupt
program creation.
• Subroutine program
:
• Interrupt program
:
2. Use common pointers.(
When local pointers are used, the subroutine programs in the stand-by type
program cannot be executed from another program.
(b) When changing execution type by instruction
Use the PSCAN, PLOW
, PSTOP and/or POFF instruction to change the
execution type.
Note23
Figure 3.40 Operation of subroutine and interrupt programs in stand-by type program
Note23
P100
RET
I0
IRET
END processing
CALL P100 instruction execution
END processing
Interrupt factor occurrence
END processing
Subroutine program in
stand-by type program
Interrupt program in stand-
by type program
Main routine program
Redundant
Universal
UD
Note3.24
Since the Redundant CPU and Universal model QCPU cannot use low speed execution type
programs, it cannot change the execution type using the PLOW instruction.
Redundant
Universal
UD
Содержание Q00CPU
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