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Arithmetic instructions
F56_DBINC
Adds "1" to the 8-digit BCD data specified by d if the trigger EN is in the ON-state. The result is
Description
stored in d.
Example value 16#87654320 (BCD)
Bit
31 . . 28 27 . . 24 23 . . 20 19 . . 16
s
16# BCD
Result value 16#87654321 (BCD) if trigger is ON
Bit
31 . . 28 27 . . 24 23 . . 20 19 . . 16
d
16# BCD
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.
Availability of F56_DBINC (see page 1325)
PLC types
Data types
Variable
Data type
DWORD
d
Operands
For
d
Error flags
No.
IEC address
%MX0.900.11
R900B
%MX0.900.9
R9009
In this example the function has been programmed in ladder diagram (LD) and structured text
Example
(ST).The same POU header is used for all programming languages.
364
8-digit BCD increment
1 0 0 0
0 1 1 1
0 1 1 0
0 1 0 1
8
7
6
1 0 0 0
0 1 1 1
0 1 1 0
0 1 0 1
8
7
6
Function
32-bit area for 8-digit BCD data to be increased by 1
Relay
-
DWY
DWR
DWL
DSV
Set
for an instant
for an instant
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 1 0 0
0 0 1 1
0 0 1 0
5
4
3
32-bit area
15 . . 12 10 . . 8 7 . . 4 3 . . 0
0 1 0 0
0 0 1 1
0 0 1 0
5
4
3
T/C
Register
DEV
DDT
DLD
DFL
If
the calculated result is 0.
the result exceeds the range of 8-digit
BCD data (overflow).
0 0 0 0
2
0
0 0 0 1
2
1
Constant
-
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