Program Control Instructions; Other Instructions - Mitsubishi MELSEC-Q/L Programming Manual

2.5.17

Program control instructions

Category
PSTOP
PSTOPP
POFF
POFFP
PSCAN
Program
PSCANP
control
instructions
PLOW
PLOWP
LDPCHK
ANDPCHK
ORPCHK
*1: n ([number of file name characters] / 2) indicates a step. (Decimal fractions are rounded up.)
2.5.18

Other instructions

Category
WDT
WDT
reset
WDTP
Timing
DUTY
clock
Time check TIMCHK
76
Symbol
PSTOP
File name
PSTOPP
File name
POFF File name
POFFP File name
PSCAN
File name
PSCANP File name
PLOW File name
PLOWP File name
PCHK File name
PCHK File name
PCHK File name
Symbol
WDT
WDTP
DUTY n1 n2 D
TIMCHK S1 S2 D
Processing Details
• Places designated program in standby
status.
• Turns OUT instruction coil of
designated program OFF, and places
program in standby status.
• Registers designated program as scan
execution type.
• Registers designated program as
low-speed execution type.
• In conduction when program of
specified file name is being executed.
• In non-conduction when program of
specified file name is not executed.
Processing Details
• Resets watchdog timer during
sequence program.
(D)
n1 scans n2 scans
SM420 to SM424, SM430 to SM434
• Turns ON device specified by (D) if
measured ON time of input condition
is longer than preset time
continuously.
Execution
Condition
*1
2
Page
-
+
598
n
*1
2
Page
-
+
599
n
*1
2
Page
-
+
600
n
*1
2
Page
-
+
601
n
*1
2
Page
-
+
603
n
Execution
Condition
Page
1 -
605
Page
4 -
606
Page
4 -
607