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Bitwise Boolean instructions
F136_DBCU
Counts the number of bits in the ON state (1) in the 32-bit data specified by s if the trigger EN is in
Description
the ON-state.
The number of 1 (ON) bits is stored in the 16-bit area specified by 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.
Availability of F136_DBCU (see page 1321)
PLC types
Data types
Variable
Data type
ANY32
s
INT
d
Operands
For
DWX
s
-
d
In this example, the same POU header is used for all programming languages. For an example
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 is set to TRUE, the function is carried out.
LD
ST
When programming with structured text, enter the following:
IF
start
THEN
F136_DBCU(checked_value, output_value);
END_IF;
544
Number of ON bits in 32-bit data
Function
source
destination area for storing the number of bits in the ON (1)
state
Relay
T/C
DWY
DWR
DWL
DSV
WY
WR
WL
SV
Register
DEV
DDT
DLD
DFL
EV
DT
LD
FL
Constant
dec. or hex.
-
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