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

FX /FX /FX Series Programmable Controllers
3G 3U 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 P
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 C D R U \G
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
FNC 43
Before
execution
After
execution
Mnemonic
16-bit Instruction
5 steps SUM
SUMP
Word device number storing the source data
Word device number storing the result data
Digit Specification
/FX
3U 3UC
D S
is counted, and stored to
1
D S
, the zero flag M8020 turns ON.
1
S D
SUM
Word data
b15 b14 b13 b12
K21847
S 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1
←
9 8
K0
D 0 0 0 0
b15 b14 b13 b12
K21847
S 0 1 0 1 0 1 0 1 0 1 0 1 0 1 1 1
K9
D
0 0 0 0
Operation Condition
32-bit Instruction
Continuous
Operation
Pulse (Single)
Operation
Description
Word Devices
Special
System User
Unit
V
PLCs.
D D
1
Number of bits in the
→
ON status in
S D
16-bit data
b11 b10 b9 b8 b7 b6 b5 b4
← ← ← ←
7 6 5 4
0 0 0 0 0 0 0 0
b11 b10 b9 b8 b7 b6 b5 b4
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 Operation Condition
Continuous
DSUM
9 steps
Operation
Pulse (Single)
DSUMP
Operation
Data type
16- or 32-bit binary
16- or 32-bit binary
Others
Con- Real Charac-
Index
stant Number ter String
Z Modify K H E " "
.
b3 b2 b1 b0
←
3 2 1 (Number of "1" (ON))
0 0 0 0
b3 b2 b1 b0
1 0 0 1
11
12
13
14
Pointer
P
15
16
17
18
19
20
325