Mitsubishi Electronics Mitsubishi Digital Electronics Video Gaming Accessories FX3G ユーザーズマニュアル
499
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.5 FNC117 – EVAL / Character String to Floating Point Conversion
11
FN
C
C
30
-FN
C
C
39
R
otati
on and
on and
Shi
ft
ft
12
FNC4
0-F
0-F
NC4
9
D
ata O
per
ati
per
ati
on
13
FN
C
C
50-FN
C
59
H
igh S
pe
ed
P
rocessing
14
FM
C
C
60-FN
C
69
H
andy
In
st
ru
ct
ion
15
FNC7
0-F
0-F
NC7
9
Ex
ter
nal FX
I/O
D
evice
16
FN
C
C
80-FN
C
89
Ext
ernal
FX
ernal
FX
De
vic
vic
e
17
FN
C
100-
FN
FN
C
10
9
Da
ta
Transf
er 2
er 2
18
FN
C
110-
FN
FN
C
139
Floati
ng Poi
nt
19
FN
C
14
0-F
N
C
149
Da
ta
O
per
at
at
ion 2
20
FN
C
150-
FN
FN
C
159
Posit
ioning
C
ont
ro
ro
l
2) In the program shown below, a character string stored in D10 and later is converted into binary floating point, and
stored to D100 and D101 when X000 turns ON
Operations at overflow, underflow and zero
Condition
Operation
The absolute value of the conversion
result is less than "2
result is less than "2
−126
".
The value of
is the minimum value (2
−126
) of 32-bit real numbers and the borrow flag
M8021 turns ON.
The absolute value of the conversion
result is not less than "2
result is not less than "2
128
".
The value of
is the maximum value (2
128
) of 32-bit real numbers and the carry flag M8022
turns ON.
The conversion result is true "0".
(The mantissa part is "0".)
(The mantissa part is "0".)
The zero flag M8020 turns ON.
X000
FNC117
DEVALP
D10
D100
b15
b8 b7
b0
D11
Ignored.
D101
1.2345E
−2
20H(space)
2EH(.)
33H(3)
35H(5)
20H(space)
31H(1)
32H(2)
34H(4)
2DH(-)
45H(E)
Rounded.
D10
D13
D12
D16
D14
32H(2)
30H(0)
D15
D100
3 4 5
2
1
0
E
2
END
00H
D
D