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491
FX
3G
/FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
16.7 FNC 86 - VRSC / Volume Scale
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
Program example
1. Example in which the scale value is used as a rotary switch
Either one among auxiliary relays M0 to M10 turns ON in accordance with the scale value in the range from
0 to 10 of the specified variable analog potentiometer.
Cautions
• In 14-point and 24-point type FX
3G
PLCs, the variable analog potentiometer board can be connected to the
option connector 1, and occupies the communication channel ch1.
In this case, the communication function using the communication channel ch1 is not available when the
VRRD or VRSC instruction is used.
• In 40-point and 60-point type FX
3G
PLCs, the variable analog potentiometer board can be connected only
to the option connector 2, and occupies the communication channel ch2.
In this case, the communication function using the communication channel ch2 is not available when the
VRRD or VRSC instruction is used.
→
For details, refer to the Communication Control Edition manual.
K1
X000
FNC 86
VRSC
FNC 41
DECO
D1
M0
K4
X001
M0
M1
M10
D1
M0 turns ON when the scale value is "0".
M0 turns ON when the scale value is "1".
M0 turns ON when the scale value is "10".
The FNC41 (DECO)
instruction occupies auxiliary
relays M0 to M15.