Arithmetic instructions
348
Part III FP Instructions
F23_DADD2
32-bit addition, destination can be specified
31 . . 28 27 . . 24 23 . . 20 19 . . 16 15 . . 12 10 . . 8 7 . . 4 3 . . 0
d
0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0
31 . . 28 27 . . 24 23 . . 20 19 . . 16 15 . . 12 10 . . 8 7 . . 4 3 . . 0
s
0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0
31 . . 28 27 . . 24 23 . . 20 19 . . 16 15 . . 12 10 . . 8 7 . . 4 3 . . 0
d
0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 1 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0
Example value 1312896
Bit
32-bit area
Example value 558144
Bit
Result value 1871040 if trigger is on
Bit
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.
PLC types
Availability of F23_DADD2 (see page 1323)
Variable Data type Function
s1 augend
s2 addend
d
ANY32
result
The variables s1, s2 and d have to be of the same data type.
Description
The 32-bit data or 32-bit equivalent constant specified by s1 and s2 are added together if the
trigger EN is in the ON-state. The added result is stored in d. All 32-bit values are treated as double
integer values.
Data types
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