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PLOW, PLOWP
Function
(1) Sets the program whose file name is being stored at the device designated by
(2) Only the programs stored in the drive No. 0 (program memory/internal RAM) can be set as the low speed execution type.
(3) Designated programs assume the low speed execution type with END processing.
Example
When programs A, B, and C exist and program A performs "PLOW" of program D. (Assume that the constant scan has
been set.)
(4) This instruction will be given priority even in cases when a program execution type has been designated in the
parameters.
(5) It is not necessary to designate the extension (.QPG) with the file name.
(Only .QPG files will be acted on.)
Operation Error
(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and an error code is stored into
SD0.
Error
code
2410
The program with the specified file name does not exist.
4235
There is a CHK instruction in the program with the specified file name.
Program Example
(1) The following program sets the program with file name ABC as low-speed execution type when X0 is turned ON.
[Ladder Mode]
602
Waiting for constant
A
B
C
END
Scan
Error details
[List Mode]
Step
in low-speed execution type.
S
A
B
C
END
Execution of
Program D
PLOW
is executed
Scan
Q00J/
Q00/
QnH
Q01
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Instruction
Device
D
QnPH QnPRH
QnU
LCPU
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