Bitwise Boolean instructions
545
Part III FP Instructions
F84_INV
16-bit data invert (one's complement)
·········
d
15
010
12
1
11
111
8
0
7
101
4
1
3
110
0
1
·········
d
15
101
12
0
11
000
8
1
7
010
4
0
3
001
0
0
Destination
Destination
Bit position
Bit position
start: ON
This instruction also exists as a P instruction (for FP2/2SH, FP3/5, FP10/10SH PLC types), which
is only executed at the rising edge of the EN trigger. Select [Insert P instruction] from the
"Instructions" pane if you require a P instruction. To facilitate reuse, the instruction then appears
under "Recently used" in the pop-up menu. Press <Ctrl>+<Shift>+<v> within the programming
area to open the list of recently used elements.
PLC types
Availability of F84_INV (see page 1326)
Variable Data type Function
d ANY16 16-bit area to be inverted
For Relay T/C Register Const.
d - WY WR WL SV EV DT LD FL -
Description
Inverts each bit (0 or 1) of the 16-bit data specified by d if the trigger EN is in the ON-state. The
inverted result is stored in the 16-bit area specified by d. This instruction is useful for controlling an
external device that uses negative logic operation.
Data types
Operands
Example
In this example, the same POU header is used for all programming languages. For an example
using IL (instruction list), please refer to the online help.
POU header
All input and output variables used for programming this function have been declared in the POU
header.
Body
When the variable start changes from FALSE to TRUE, the function is carried out.
LD
To Next Page
Loading...
Need help?
General
