340
FX3G/FX3U/FX3UC 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
2. 32-bit operation (DSUM and DSUMP)
The number of bits in the ON status in [ +1, ] is counted, and stored to .
• The number of bits in the ON status are stored in , and K0 is stored in +1.
• When all bits are OFF in [ +1, ], the zero flag M8020 turns ON.
3. Operation result according to the value (in 16-bit operation)
M8020
(zero
flag)
Bit device Word device
b15 b14 b13 b12 b11 b10
b9 b8 b7 b6 b5 b4 b3 b2 b1 b0
Decimal Hexadecimal
0000000000000000 0 0000 0 ON
0000000000000001 1 0001 1 OFF
0000000000000010 2 0002 1 OFF
0000000000000011 3 0003 2 OFF
0000000000000100 4 0004 1 OFF
0000000000000101 5 0005 2 OFF
0000000000000110 6 0006 2 OFF
0000000000000111 7 0007 3 OFF
0000000000001000 8 0008 1 OFF
0000000000001001 9 0009 2 OFF
0000000000001010 10 000A 2 OFF
0000000000001011 11 000B 3 OFF
…
…
…
…
OFF
1111111111111011 −5 FFFB 15 OFF
1111111111111100 −4 FFFC 14 OFF
1111111111111101 −3 FFFD 15 OFF
1111111111111110 −2 FFFE 15 OFF
1111111111111111 −1FFFF16OFF
D
1
S
D
1
S
D
1
D
D
1
D
D
1
D
D
1
S
D
1
S
[ +1, ]
S
S
Command
input
FNC 43
DSUM
S
D
Before
execution
After
execution
S
D
K21847
K0
K21847
K9
K0
K0
S
D
D
Number of bits in
the ON status in
D
+1,
Word data
32-bit data
K0 is written
0 0 0 0 0
1001000000000000
0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1
1001000000000000
b16b17b31
…
b0b1b2b3b4b5b6b7b8b9b10b11b12b13b14b15
b16b17b31
…
b0b1b2b3b4b5b6b7b8b9b10b11b12b13b14b15
32 16 8 4 2 1
0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 10 0 0 0 0
0000000000000000
00000
123
←
4
←
5
←
6
←
7
←
8
←
9(Number of "1" (ON))
→
D
1
D
D
1
S
S
D
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