Chapter 16 PLC Function Applications
MS300
(High Speed Model)
16-44
Command Function
NOP
No action
Operand
N/A
The command NOP does not perform any operation in the program. Because
execution of this command will retain the original logical operation results, it can be
used in the following situation: the NOP command can be used instead of a command
that is deleted without changing the program length.
Ladder diagram:
X0
Y1
NOP
NOP command will be simplified and not
displayed when the ladder diagram is
displayed.
Command code:
Description:
LD
X0
Load Contact B of X0
NOP
No action
OUT Y1
Drive
Y1
coil
Command Function
INV
Inverse of operation results
Operand
N/A
Saves the result of the logic inversion operation prior to the INV command in the
cumulative register.
Ladder diagram:
X0
Y1
Command code:
Description:
LD
X0
Load Contact A of X0
INV
Inverse of operation
results
OUT Y1
Drive
Y1
coil
Command Function
P
Index
Operand
P0~P255
Pointer P is used to subprogram call command API 01 CALL. Use does not require
starting from zero, but the number cannot be used repeatedly, otherwise an
unpredictable error will occur.
Ladder diagram:
X0
Y1
CALL
P10
X1
P10
Command code:
Description:
LD
X0
Load Contact A of X0
CALL
P10
Call command CALL to
P10
:
P10
Pointer P10
LD
X1
Load Contact A of X1
OUT Y1
Drive
Y1
coil
Содержание VFD11AMS21AFSHA
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