301
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
12 Data Operation – FNC 40 to FNC 49
12.4 FNC 43 – SUM / Sum of Active Bits
11
FN
C30-
FN
C39
R
o
ta
tion and
Sh
ift
12
FNC
4
0
-FNC49
D
a
ta
Op
e
ra
tio
n
13
FNC5
0
-FNC5
9
H
igh Speed
Pr
ocessi
ng
14
FM
C6
0
-F
NC6
9
H
and
y
In
st
ru
cti
o
n
15
FNC7
0
-FNC7
9
Ex
te
rn
a
l F
X
I
/O
D
evi
ce
16
FNC8
0
-FNC8
9
Ext
e
rnal
FX
D
evi
ce
17
F
N
C1
00
-F
NC
10
9
Da
ta
Tr
ansf
e
r 2
18
FN
C
110-FN
C
13
9
Fl
oat
ing P
o
in
t
19
FN
C
140-FN
C
149
Da
ta
O
per
at
io
n
2
20
FN
C
15
0-F
N
C
159
P
o
si
tioni
ng
C
ont
ro
l
12.4
FNC 43 – SUM / Sum of Active Bits
Outline
This instruction counts the number of "1" (ON) in the data of a specified device.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (SUM and SUMP)
The number of bits in the ON status in
is counted, and stored to
.
• When all bits are OFF in
, the zero flag M8020 turns ON.
Operand type
Description
Data type
Word device number storing the source data
16- or 32-bit binary
Word device number storing the result data
16- or 32-bit binary
Oper-
and
Type
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D
.b KnX KnY KnM KnS
T
C
D
R U
\G
V
Z Modify K
H
E
"
"
P
3
3
3
3
3 3 3 3
3
3 3
3
3 3
3
3
3
3 3 3 3
3
3 3
3
DSUM
DSUMP
Mnemonic
Operation Condition
P
FNC 43
SUM
D
16-bit Instruction
5 steps
SUM
SUMP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
9 steps
Continuous
Operation
Pulse (Single)
Operation
S
1
S
D
S
1
S
S
2
D
D
1
S
D
1
D
D
1
S
Number of bits in the
ON status in
→
S
D
Command
input
FNC 43
SUM
S
D
Before
execution
After
execution
S
D
S
D
K21847
K0
K21847
K9
Word data
16-bit data
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
b0
b1
b2
b3
b4
b5
b6
b7
b8
b9
b10
b11
b12
b13
b14
b15
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
1
b0
b1
b2
b3
b4
b5
b6
b7
b8
b9
b10
b11
b12
b13
b14
b15
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
1
2
3
←
4
←
5
←
6
←
7
←
8
←
9
(Number of "1" (ON))
32 16 8
4
2
1