Fnc 43 - Sum / Sum Of Active Bits - Mitsubishi FX3G Series Programming Manual

FX /FX /FX /FX
3G 3U 3GC 3UC
Programming Manual - Basic & Applied Instruction Edition
12.4 FNC 43 – SUM / Sum of Active Bits
Outline
This instruction counts the number of "1" (ON) bits in the data of a specified device.
1. Instruction format
FNC 43
D
SUM
2. Set data
Operand type
S S
1
D
3. Applicable devices
Bit Devices
Oper-
and System User
Type
X Y M T C S D .b KnX KnY KnM KnS T
S S
1
S D
2
: This function is supported only in FX
Explanation of function and operation
1. 16-bit operation (SUM and SUMP)
The number of bits in the ON status in
• When all bits are OFF in
Command
input
Before
execution
After
execution
318
Series
Mnemonic
16-bit Instruction
P
5 steps SUM
SUMP
Word device number storing the source data
Word device number storing the result data
Digit Specification
/FX
3U
D S
1
D S
, the zero flag M8020 turns ON.
1
FNC 43
S D
SUM
Word data
b15 b14 b13
K21847
S 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1
←
9
K0
D 0 0
b15 b14 b13
K21847
S 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1
K9
D
0 0
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User
Unit
C D R U \G
PLCs.
3UC
is counted, and stored to
Number of bits in the
→
ON status in
S
16-bit data
b12 b11 b10 b9 b8 b7 b6 b5
← ← ← ←
8 7 6 5
0 0 0 0 0 0 0 0
b12 b11 b10 b9 b8 b7 b6 b5
32 16 8 4 2 1
0 0 0 0 0 0 0 0
12 Data Operation – FNC 40 to FNC 49
12.4 FNC 43 – SUM / Sum of Active Bits
Mnemonic
32-bit Instruction
DSUM
9 steps
DSUMP
Con- Real
Index
stant Number
V Z Modify K H E
D D
.
1
D
b4 b3 b2 b1 b0
←
4 3 2 1 (Number of "1" (ON))
0 0 0 0 0 0
b4 b3 b2 b1 b0
0 0 1 0 0 1
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
Data type
16- or 32-bit binary
16- or 32-bit binary
Others
Charac-
Pointer
ter String
" " P