299
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
12 Data Operation – FNC 40 to FNC 49
12.3 FNC 42 – ENCO / Encode
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
12.3
FNC 42 – ENCO / Encode
Outline
This instruction obtains positions in which bits are ON in data.
1. Instruction format
2. Set data
3. Applicable devices
Explanation of function and operation
1. 16-bit operation (ENCO and ENCOP)
The 2
n
bit of
is encoded, and the result value is stored to
.
This instruction converts data into binary data according to a bit position in the ON status.
1) When
is a bit device (1
≤
n
≤
8)
ON bit positions among "2
n
" bits (1
≤
n
≤
8) from
are encoded to
.
-
When "n" is "8", 2
8
= 256 bits (which is the maximum value) are occupied.
-
The encoding result of
is "0" (OFF) from the most significant bit to the low-order bit "n".
Operand type
Description
Data type
Data to be encoded or word device number storing data
16-bit binary
Word device number storing the encoding result
16-bit binary
n
Number of bits of device storing the encoding result (n = 1 to 8)
(When "n" is "0", no processing is executed.)
16-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
n
3 3
P
FNC 42
ENCO
−
−
Mnemonic
Operation Condition
16-bit Instruction
7 steps
ENCO
ENCOP
Mnemonic
Operation Condition
Continuous
Operation
Pulse (Single)
Operation
32-bit Instruction
S
1
S
D
S
1
S
S
2
D
D
1
S
D
1
D
D
1
S
D
1
S
D
1
D
D
1
D
Command
input
FNC 42
ENCO
n
S
D
When it is Y, M or S
(1
≤
n
≤
8)
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
b15
D10
(1)
(2)
4
All of them are "0".
b0
7
0
0
0
0
1
0
0
0
0
1
2
(3)
4
5
6
M17
M16
M15
M14
M13
M12
M11
M10
When "n" is 3
S
= M10
D