Mitsubishi Q00JCPU User Manual page 159

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
(3) Example of instruction-triggered execution type changing
Redundant
Universal
UD
Note3.34 Note3.34
Universal
Redundant
UD
Note3.34
Note3.34
Execution type
before change
Remains unchanged
Scan execution type from the scan execution
type.
Initial execution type
Changes to the scan
execution type.
Stand-by type
Suspends the
execution of the low
speed execution type
Low speed execution
type and changes to the
scan execution type at
Note3.34
the next scan.
(Executed at Step 0)
Fixed scan execution Changes to the scan
type execution type.
Note32
Universal
Redundant
Since the Redundant CPU and Universal model QCPU cannot use low speed execution type
UD
programs, it cannot change the execution type using the PLOW instruction.
Note3.34
Note3.34
(a) Execution type changing instruction
Using this instruction can change the execution type even during sequence
program execution.
Use any of the PSCAN, PLOW
change the execution
Initial execution type
program
PSTOP, PSTOP,
POFF POFF
instruction instruction
Stand-by type
program
Figure 3.55 Instruction-triggered execution type changing pattern
Table3.3 Instruction-triggered execution type changing timing
PSCAN PSTOP
Changes to the stand-
by type.
Remains unchanged
from the stand-by type.
Suspends the
execution of the low
speed execution type
and changes to the
stand-by type at the
next or later scan.
Changes to the stand-
by type.
3.3 Settings for Creation and Execution of Multiple Sequence Programs
3.3.6 Execution type setting and example of type changing
Note3.34
,PSTOP and/or POFF instructions to
type.Note32
PSCAN
instruction Scan execution type
program
PSCAN PLOW
instruction instruction
PLOW
instruction
PSTOP,
POFF instruction
PSTOP, PLOW
POFF instruction instruction
Execution instructions
POFF
Turns OFF the output at
the next scan.
Changes to the stand-
by type at the next or
later scan.
No operation
Suspends the
execution of the low
speed execution type
and turns OFF the
output at the next scan.
Changes to the stand-
by type at the next or
later scan.
Turns OFF the output at
the next scan.
Changes to the stand-
by type at the next or
later scan.
PSCAN
instruction Fixed scan execution
type program
PSCAN PLOW
instruction instruction
Low speed execution
type program
Note3.34
PLOW
Changes to the low
speed execution type.
Remains unchanged
from the low speed
execution type.
Changes to the low
speed execution type.
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