Delta MH300 Series - Page 914

Chapter 16 PLC Function ApplicationsMH300
16-51
Command
Function
NOP
No action
Operand N/A
The NOP command does not perform any operation in the program. Because
execution of this command retains the original logical operation results, you can use it
in the following situation: use
the NOP command instead of a command that is deleted
without changing the program length.
Ladder diagram:
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
Pointer
Operand
P0–P255
Use pointer P as the target in a subprogram call (command API 01 CALL). Using P
does not require starting from zero, but the number cannot be used repeatedly;
otherwise, an unpredictable error occurs.
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