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Arithmetic instructions
F22_ADD2
The 16-bit data or 16-bit equivalent constant specified by s1 and s2 are added together if the
Description
trigger EN is in the ON-state. The result is stored in d. All 16-bit values are treated as integer
values.
Example value 27
Bit
15 . . 12 10 . . 8 7 . . 4 3 . . 0
d
Example value 16
Bit
15 . . 12 10 . . 8 7 . . 4 3 . . 0
s
Result value 43 if trigger is ON
Bit
15 . . 12 10 . . 8 7 . . 4 3 . . 0
d
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.
Instead of using this FP instruction, we recommend using the related IEC instruction ADD (see
page 61). Please refer also to Advantages of the IEC instructions in the online help.
Availability of F22_ADD2 (see page 1323)
PLC types
Data types
Variable
Data type
s1
s2
ANY16
d
The variables s1, s2 and d have to be of the same data type.
Operands
For
s1, s2
d
346
16-bit addition, destination can be specified
0 0 0 0
0 0 0 0
0 0 0 1
1 0 1 1
0 0 0 0
0 0 0 0
0 0 0 1
0 0 0 0
0 0 0 0
0 0 0 0
0 0 1 0
1 0 1 1
Function
augend
addend
result
Relay
WX
WY
WR
WL
-
WY
WR
WL
T/C
Register
SV
EV
DT
LD
FL
SV
EV
DT
LD
FL
Constant
dec. or hex.
-
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