Registering Program As Scan Execution Type - Mitsubishi MELSEC-Q Series Programming Manual

7.16.3

Registering program as scan execution type

PSCAN(P)
Structured ladder
PSCAN
EN ENO
s
Input argument, EN: Executing condition
s: File name whose program is set to the scan execution type
Output argument, ENO:
Execution result
Setting
data
s
Function
(1) Sets the program whose file name is stored in the device specified for
execution type.
(2) Only the programs stored in the drive number 0 (program memory/built-in RAM) can be set
in the scan execution type.
(3) Specified programs assume the scan execution type with END processing.
Example
When programs A, B, and C exist and program A performs the PSCAN(P) instruction of
program D.
(4) This instruction will be given priority even in cases when a program execution type has been
specified in the parameters.
P: Executing condition
ST
ENO:= (EN, s);
PSCAN
Internal device
R, ZR
Bit Word Bit
−
A B C
Execution of
PSCAN(P) instruction
Scan
7.16.3 Registering program as scan execution type
instructions.
PSCAN
:Bit
:String
:Bit
J \
U \G
Word
−
END A B C
Program D
is executed
Scan
7.16 Program Control Instructions
PSCAN
PSCAN
High
Universal
Performance
UD
:
indicates any of the following
PSCANP
Constant
Zn Others
$
−
in the scan
s
D END
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