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