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507
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
18 Floating Point – FNC110 to FNC139
18.1 FNC110 – ECMP / Floating Point Compare
11
FNC3
0-F
NC3
9
R
otati
on and
Shif
t
12
FNC4
0-F
NC4
9
D
ata
O
per
ati
on
13
FN
C
50-FN
C
59
H
igh Speed
Pr
ocess
ing
14
FM
C
60-
FN
C
69
H
andy
In
st
ru
ct
ion
15
FNC7
0-F
N
C7
9
Ex
ter
nal
FX
I/O
D
evice
16
FN
C
80-FN
C
89
Ext
ernal FX
De
vic
e
17
FN
C
100-
FN
C
109
Da
ta
Transf
er 2
18
FN
C
110-
FN
C
139
Fl
oati
ng Poi
nt
19
FN
C
140
-F
N
C
14
9
Da
ta
O
per
ati
on 2
20
FN
C
150-
FN
C
159
Posit
ioning
C
ontr
ol
• When a constant (K or H) is specified as [
+1,
] or [
+1,
], it is automatically
converted from binary into binary floating point (real number) when the instruction is executed.
Caution
1. Number of occupied devices
Three devices are occupied from
(
,
+1 and
+2).
Make sure that these devices are not used for any other purpose.
S
1
S
1
S
2
S
2
Command
input
FNC110
DECMP
Even if the command input turns OFF and DECMP instruction is not executed, to +2 hold the status
before the please rewrite this command input turned OFF.
+1
+2
S
1
S
2
D
D
D
D
D
D
Turns ON in the case of
<
+1,
]
S
1
S
1
+1,
[ S
2
S
2
" [
] ".
Turns ON in the case of
=
+1,
]
S
1
S
1
+1,
[ S
2
S
2
" [
] ".
Turns ON in the case of
>
] ".
+1,
" [
]
S
1
S
1
+1,
[ S
2
S
2
D
D
D
D